Changes in / [b2fe1c9:32cab5b]


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Files:
246 added
4 deleted
113 edited

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  • doc/LaTeXmacros/common.tex

    rb2fe1c9 r32cab5b  
    1111%% Created On       : Sat Apr  9 10:06:17 2016
    1212%% Last Modified By : Peter A. Buhr
    13 %% Last Modified On : Sat Feb 17 21:58:43 2018
    14 %% Update Count     : 369
     13%% Last Modified On : Mon Mar 19 17:18:23 2018
     14%% Update Count     : 379
    1515%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
    1616
     
    101101% index macros
    102102\newcommand{\italic}[1]{\emph{\hyperpage{#1}}}
    103 \newcommand{\definition}[1]{\textbf{\hyperpage{#1}}}
     103\newcommand{\Definition}[1]{\textbf{\hyperpage{#1}}}
    104104\newcommand{\see}[1]{\emph{see}~#1}
    105105
     
    114114\def\impl{\@bsphack\begingroup
    115115          \def\protect##1{\string##1\space}\@sanitize
    116           \@wrxref{|definition}}
     116          \@wrxref{|Definition}}
    117117\newcommand{\indexcode}[1]{{\lstinline$#1$}}
    118118\def\use{\@bsphack\begingroup
     
    124124    \if@nobreak \ifvmode\nobreak\fi\fi\@esphack}
    125125%\newcommand{\use}[1]{\index{#1@{\lstinline$#1$}}}
    126 %\newcommand{\impl}[1]{\index{\protect#1@{\lstinline$\protect#1$}|definition}}
     126%\newcommand{\impl}[1]{\index{\protect#1@{\lstinline$\protect#1$}|Definition}}
    127127
    128128% inline text and lowercase index: \Index{inline and lowercase index text}
     
    148148% Latin abbreviation
    149149\newcommand{\abbrevFont}{\textit}                       % set empty for no italics
     150\@ifundefined{eg}{
    150151\newcommand{\EG}{\abbrevFont{e}.\abbrevFont{g}.}
    151152\newcommand*{\eg}{%
     
    153154                {\@ifnextchar{:}{\EG}%
    154155                        {\EG,\xspace}}%
    155 }%
     156}}{}%
     157\@ifundefined{ie}{
    156158\newcommand{\IE}{\abbrevFont{i}.\abbrevFont{e}.}
    157159\newcommand*{\ie}{%
     
    159161                {\@ifnextchar{:}{\IE}%
    160162                        {\IE,\xspace}}%
    161 }%
     163}}{}%
     164\@ifundefined{etc}{
    162165\newcommand{\ETC}{\abbrevFont{etc}}
    163166\newcommand*{\etc}{%
    164167        \@ifnextchar{.}{\ETC}%
    165168        {\ETC.\xspace}%
    166 }%
     169}}{}%
     170\@ifundefined{etal}{
    167171\newcommand{\ETAL}{\abbrevFont{et}~\abbrevFont{al}}
    168172\newcommand*{\etal}{%
    169173        \@ifnextchar{.}{\protect\ETAL}%
    170174                {\protect\ETAL.\xspace}%
    171 }%
     175}}{}%
     176\@ifundefined{viz}{
    172177\newcommand{\VIZ}{\abbrevFont{viz}}
    173178\newcommand*{\viz}{%
    174179        \@ifnextchar{.}{\VIZ}%
    175180                {\VIZ.\xspace}%
    176 }%
     181}}{}%
    177182\makeatother
    178183
  • doc/LaTeXmacros/lstlang.sty

    rb2fe1c9 r32cab5b  
    88%% Created On       : Sat May 13 16:34:42 2017
    99%% Last Modified By : Peter A. Buhr
    10 %% Last Modified On : Wed Aug 30 22:11:14 2017
    11 %% Update Count     : 14
     10%% Last Modified On : Fri Apr  6 23:44:50 2018
     11%% Update Count     : 20
    1212%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
    1313
     
    3131\lstdefinelanguage{sml} {
    3232        morekeywords= {
    33                 EQUAL, GREATER, LESS, NONE, SOME, abstraction, abstype, and, andalso, array, as, before, bool,
    34                 case, char, datatype, do, else, end, eqtype, exception, exn, false, fn, fun, functor, handle,
    35                 if, in, include, infix, infixr, int, let, list, local, nil, nonfix, not, o, of, op, open,
    36                 option, orelse, overload, print, raise, real, rec, ref, sharing, sig, signature, string, struct,
    37                 structure, substring, then, true, type, unit, val, vector, where, while, with, withtype, word
    38         },
    39         morestring=[b]",
    40         morecomment=[s]{(*}{*)},
     33                EQUAL, GREATER, LESS, NONE, SOME, abstraction, abstype, and, andalso, array, as, before,
     34                bool, case, char, datatype, do, else, end, eqtype, exception, exn, false, fn, fun, functor,
     35                handle, if, in, include, infix, infixr, int, let, list, local, nil, nonfix, not, o, of, op,
     36                open, option, orelse, overload, print, raise, real, rec, ref, sharing, sig, signature,
     37                string, struct, structure, substring, then, true, type, unit, val, vector, where, while,
     38                with, withtype, word
     39    },
     40    morestring=[b]",
     41    morecomment=[s]{(*}{*)},
    4142}
    4243
     
    8283
    8384\lstdefinelanguage{rust}{
     85        % Keywords
    8486        morekeywords=[1]{
    8587                abstract, alignof, as, become, box, break, const, continue, crate, do, else, enum, extern,
    86         false, final, fn, for, if, impl, in, let, loop, macro, match, mod, move, mut, offsetof,
    87         override, priv, proc, pub, pure, ref, return, Self, self, sizeof, static, struct, super,
    88         trait, true, type, typeof, unsafe, unsized, use, virtual, where, while, yield
     88                false, final, fn, for, if, impl, in, let, loop, macro, match, mod, move, mut, offsetof,
     89                override, priv, proc, pub, pure, ref, return, Self, self, sizeof, static, struct, super,
     90                trait, true, type, typeof, unsafe, unsized, use, virtual, where, while, yield
    8991        },
     92        % Strings
    9093        morestring=[b]{"},
     94        % Comments
    9195        comment=[l]{//},
    9296        morecomment=[s]{/*}{*/},
     97        % Options
    9398        sensitive=true
    9499}
    95100
    96 \lstdefinelanguage{Pseudo}{
     101\lstdefinelanguage{pseudo}{
    97102        morekeywords={string,uint,int,bool,float},
    98103        sensitive=true,
     
    107112\lstdefinelanguage{CFA}[ANSI]{C}{
    108113        morekeywords={
    109                 _Alignas, _Alignof, __alignof, __alignof__, asm, __asm, __asm__, _At, __attribute,
    110                 __attribute__, auto, _Bool, catch, catchResume, choose, _Complex, __complex, __complex__,
    111                 __const, __const__, disable, dtype, enable, __extension__, fallthrough, fallthru,
    112                 finally, forall, ftype, _Generic, _Imaginary, inline, __label__, lvalue, _Noreturn, one_t,
    113                 otype, restrict, _Static_assert, throw, throwResume, trait, try, ttype, typeof, __typeof,
    114                 __typeof__, virtual, with, zero_t},
    115         morekeywords=[2]{
    116                 _Atomic, coroutine, is_coroutine, is_monitor, is_thread, monitor, mutex, nomutex, or,
    117                 resume, suspend, thread, _Thread_local, waitfor, when, yield},
     114                _Alignas, _Alignof, __alignof, __alignof__, asm, __asm, __asm__, __attribute, __attribute__,
     115                auto, _Bool, catch, catchResume, choose, _Complex, __complex, __complex__, __const, __const__,
     116                coroutine, disable, dtype, enable, __extension__, exception, fallthrough, fallthru, finally,
     117                __float80, float80, __float128, float128, forall, ftype, _Generic, _Imaginary, __imag, __imag__,
     118                inline, __inline, __inline__, __int128, int128, __label__, monitor, mutex, _Noreturn, one_t, or,
     119                otype, restrict, __restrict, __restrict__, __signed, __signed__, _Static_assert, thread,
     120                _Thread_local, throw, throwResume, timeout, trait, try, ttype, typeof, __typeof, __typeof__,
     121                virtual, __volatile, __volatile__, waitfor, when, with, zero_t,
     122    },
    118123        moredirectives={defined,include_next}%
    119124}
  • doc/bibliography/pl.bib

    rb2fe1c9 r32cab5b  
    780780    title       = {Boost Coroutine Library},
    781781    year        = 2015,
    782     note        = {\href{http://www.boost.org/doc/libs/1_61_0/libs/coroutine/doc/html/index.html}
    783                   {{http://www.boost.org/\-doc/\-libs/1\_61\_0/\-libs/\-coroutine/\-doc/\-html/\-index.html}} [Accessed September 2016]},
     782    howpublished= {\href{http://www.boost.org/doc/libs/1_61_0/libs/coroutine/doc/html/index.html}
     783                  {{http://www.boost.org/\-doc/\-libs/1\_61\_0/\-libs/\-coroutine/\-doc/\-html/\-index.html}}},
     784    note        = {Accessed: 2016-09},
    784785}
    785786
     
    865866    keywords    = {ISO/IEC C 11},
    866867    contributer = {pabuhr@plg},
    867     author      = {C11},
    868     title       = {Programming Languages -- {C} {ISO/IEC} 9889:2011-12},
     868    key         = {C11},
     869    title       = {C Programming Language {ISO/IEC} 9889:2011-12},
    869870    edition     = {3rd},
    870871    publisher   = {International Standard Organization},
     
    873874}
    874875
    875 @techreport{C++Concepts,
    876     type        = {International Standard},
     876@manual{C++Concepts,
    877877    keywords    = {ISO/IEC TS 19217:2015},
    878878    contributer = {a3moss@uwaterloo.ca},
    879879    key         = {Concepts},
    880     title       = {Information technology -- Programming languages -- {C}{\kern-.1em\hbox{\large\texttt{+\kern-.25em+}}} Extensions for concepts {ISO/IEC} {TS} 19217:2015},
     880    title       = {{C}{\kern-.1em\hbox{\large\texttt{+\kern-.25em+}}} Programming language -- Extensions for concepts {ISO/IEC} {TS} 19217:2015},
    881881    publisher   = {International Standard Organization},
    882882    address     = {\href{https://www.iso.org/standard/64031.html}{https://\-www.iso.org/\-standard/\-64031.html}},
    883     year        = 2015
     883    year        = 2015,
    884884}
    885885
    886886@misc{Cforall,
    887887    key         = {Cforall},
    888     title       = {C$\forall$ Features},
     888    title       = {\textsf{C}{$\mathbf{\forall}$} Features},
    889889    howpublished= {\url{https://plg.uwaterloo.ca/~cforall/features}},
    890890    note        = {Accessed: 2018-01-01},
     
    895895    contributer = {pabuhr@plg},
    896896    author      = {Rodolfo Gabriel Esteves},
    897     title       = {C$\forall$, a Study in Evolutionary Design in Programming Languages},
     897    title       = {\textsf{C}$\mathbf{\forall}$, a Study in Evolutionary Design in Programming Languages},
    898898    school      = {School of Computer Science, University of Waterloo},
    899899    year        = 2004,
     
    10221022}
    10231023
     1024@inproceedings{Necula02,
     1025    author      = {Necula, George C. and McPeak, Scott and Weimer, Westley},
     1026    title       = {{CCured}: Type-safe Retrofitting of Legacy Code},
     1027    booktitle   = {Proceedings of the 29th ACM SIGPLAN-SIGACT Symposium on Principles of Programming Languages},
     1028    series      = {POPL '02},
     1029    year        = {2002},
     1030    location    = {Portland, Oregon},
     1031    pages       = {128-139},
     1032    publisher   = {ACM},
     1033    address     = {New York, NY, USA},
     1034}
     1035
    10241036@techreport{cforall-ug,
    10251037    keywords    = {cforall, user guide},
    10261038    contributer = {pabuhr@plg},
    10271039    author      = {Peter A. Buhr and Glen Ditchfield and David Till and Charles R. Zarnke},
    1028     title       = {{\mbox{\mdseries\sffamily C{$\mathbf{\forall}$}}}\ Users Guide, Version 0.1},
     1040    title       = {\textsf{C}$\mathbf{\forall}$ Users Guide, Version 0.1},
    10291041    institution = {Department of Computer Science, University of Waterloo},
    10301042    address     = {Waterloo, Ontario, Canada, N2L 3G1},
     
    11051117    title       = {Programming Languages -- {Cobol} ISO/IEC 1989:2014},
    11061118    edition     = {2nd},
    1107     institution = {International Standard Organization},
     1119    institution = {International Standard Organization},
    11081120    address     = {\href{https://www.iso.org/standard/51416.html}{https://\-www.iso.org/\-standard/\-51416.html}},
    11091121    year        = 2014,
     
    11171129    journal     = sigplan,
    11181130    year        = 1984,
    1119     month       = jun, volume = 19, number = 6, pages = {1-12},
     1131    month       = jun,
     1132    volume      = 19,
     1133    number      = 6,
     1134    pages       = {1-12},
    11201135    note        = {Proceedings of the ACM SIGPLAN '84 Symposium on Compiler Construction},
    11211136    abstract    = {
     
    15361551@mastersthesis{Delisle18,
    15371552    author      = {Thierry Delisle },
    1538     title       = {Concurrency in {C}$\mathbf{\forall}$},
     1553    title       = {Concurrency in \textsf{C}$\mathbf{\forall}$},
    15391554    school      = {School of Computer Science, University of Waterloo},
    15401555    year        = 2018,
     
    17021717    contributer = {a3moss@uwaterloo.ca},
    17031718    author      = {Glen Ditchfield},
    1704     title       = {Conversions for {Cforall}},
     1719    title       = {Conversions for \textsf{C}$\mathbf{\forall}$},
    17051720    note        = {\href{http://plg.uwaterloo.ca/~cforall/Conversions/index.html}{http://\-plg.uwaterloo.ca/\-\textasciitilde cforall/\-Conversions/\-index.html}},
    17061721    month       = {Nov},
     
    19892004
    19902005@book{Stroustrup94,
    1991     keywords    = {C++},
    1992     contributor = {wyrmok@plg},
    1993     author      = {Bjarne Stroustrup},
    1994     title       = {The Design and Evolution of {C}{\kern-.1em\hbox{\large\texttt{+\kern-.25em+}}}},
    1995     publisher   = {Addison-Wesley},
     2006    keywords    = {C++},
     2007    contributor = {wyrmok@plg},
     2008    author      = {Bjarne Stroustrup},
     2009    title       = {The Design and Evolution of {C}{\kern-.1em\hbox{\large\texttt{+\kern-.25em+}}}},
     2010    publisher   = {Addison-Wesley},
    19962011    address     = {Boston},
    1997     year        = 1994
     2012    year        = 1994
    19982013}
    19992014
     
    27382753}
    27392754
    2740 @online{GCCExtensions,
     2755@misc{GCCExtensions,
    27412756    contributer = {a3moss@uwaterloo.ca},
    27422757    key         = {{GNU}},
     
    27442759    title       = {Extensions to the {C} Language Family},
    27452760    year        = 2014,
    2746     note        = {\href{https://gcc.gnu.org/onlinedocs/gcc-4.7.2/gcc/C-Extensions.html}{https://\-gcc.gnu.org/\-onlinedocs/\-gcc-4.7.2/\-gcc/\-C\-Extensions.html}},
    2747     urldate     = {2017-04-02}
     2761    howpublished= {\href{https://gcc.gnu.org/onlinedocs/gcc-4.7.2/gcc/C-Extensions.html}{https://\-gcc.gnu.org/\-onlinedocs/\-gcc-4.7.2/\-gcc/\-C\-Extensions.html}},
     2762    note        = {Accessed: 2017-04-02},
    27482763}
    27492764
     
    30833098    keywords    = {GMP arbitrary-precision library},
    30843099    contributer = {pabuhr@plg},
     3100    key         = {GMP},
    30853101    title       = {{GNU} Multiple Precision Arithmetic Library},
    3086     author      = {GMP},
    3087     organization= {GNU},
     3102    address     = {GNU},
    30883103    year        = 2016,
    30893104    note        = {\href{https://gmplib.org}{https://\-gmplib.org}},
     
    31143129}
    31153130
    3116 @online{GObject,
     3131@misc{GObject,
    31173132    keywords    = {GObject},
    31183133    contributor = {a3moss@uwaterloo.ca},
    3119     author      = {{GObject}},
    3120     organization= {The GNOME Project},
    3121     title       = {{GObject} Reference Manual},
     3134    key         = {GObject},
     3135    organization= {The {GNOME} Project},
     3136    title       = {{GO}bject Reference Manual},
    31223137    year        = 2014,
    3123     url         = {https://developer.gnome.org/gobject/stable/},
    3124     urldate     = {2017-04-04}
     3138    howpublished= {https://developer.gnome.org/gobject/stable/},
     3139    note        = {Accessed: 2017-04},
    31253140}
    31263141
     
    33803395    contributer = {pabuhr@plg},
    33813396    author      = {Richard C. Bilson},
    3382     title       = {Implementing Overloading and Polymorphism in Cforall},
     3397    title       = {Implementing Overloading and Polymorphism in \textsf{C}$\mathbf{\forall}$},
    33833398    school      = {School of Computer Science, University of Waterloo},
    33843399    year        = 2003,
     
    36463661}
    36473662
     3663@inproceedings{Pharr12,
     3664    title       = {ispc: A {SPMD} compiler for high-performance CPU programming},
     3665    author      = {Pharr, Matt and Mark, William R},
     3666    booktitle   = {Innovative Parallel Computing (InPar), 2012},
     3667    pages       = {1--13},
     3668    year        = {2012},
     3669    month       = may,
     3670    address     = {San Jose, CA, USA},
     3671    publisher   = {IEEE},
     3672}
     3673
     3674@inproceedings{DeLozier13,
     3675    keywords    = {C++, local pointers, memory safety, type-safety},
     3676    author      = {DeLozier, Christian and Eisenberg, Richard and Nagarakatte, Santosh and Osera, Peter-Michael and Martin, Milo M.K. and Zdancewic, Steve},
     3677    title       = {{I}ronclad {C++}: A Library-augmented Type-safe Subset of {C++}},
     3678    booktitle   = {Proceedings of the 2013 ACM SIGPLAN International Conference on Object Oriented Programming Systems Languages \& Applications},
     3679    series      = {OOPSLA'13},
     3680    year        = {2013},
     3681    address     = {Indianapolis, Indiana, USA},
     3682    pages       = {287-304},
     3683    publisher   = {ACM},
     3684}
     3685
    36483686@inproceedings{Hibbard77,
    36493687    keywords    = {algol-68, concurrency},
     
    36873725                 
    36883726@book{Java,
    3689     keywords    = {Java},
    3690     contributer = {pabuhr@plg},
    3691     author      = {James Gosling and Bill Joy and Guy Steele and Gilad Bracha},
    3692     title       = {The {Java} Language Specification},
     3727    keywords    = {Java},
     3728    contributer = {pabuhr@plg},
     3729    author      = {James Gosling and Bill Joy and Guy Steele and Gilad Bracha},
     3730    title       = {The {Java} Language Specification},
    36933731    publisher   = {Addison-Wesley},
    36943732    address     = {Reading},
    3695     year        = 2000,
     3733    year        = 2000,
    36963734    edition     = {2nd},
    36973735}
    36983736
    36993737@manual{Java8,
    3700     keywords    = {Java SE 8},
    3701     contributer = {pabuhr@plg},
    3702     author      = {James Gosling and Bill Joy and Guy Steele and Gilad Bracha and Alex Buckley},
    3703     title       = {{Java} Language Specification},
     3738    keywords    = {Java SE 8},
     3739    contributer = {pabuhr@plg},
     3740    author      = {James Gosling and Bill Joy and Guy Steele and Gilad Bracha and Alex Buckley},
     3741    title       = {{Java} Language Specification},
    37043742    publisher   = {Oracle},
    3705     year        = 2015,
    3706     edition     = {Java SE 8},
     3743    year        = 2015,
     3744    edition     = {{J}ava {SE} 8},
    37073745}
    37083746
     
    46394677}
    46404678
    4641 @manual{obj-c-book,
     4679@misc{obj-c-book,
    46424680    keywords    = {objective-c},
    46434681    contributor = {a3moss@uwaterloo.ca},
    4644     author      = {{Objective-C}},
    4645     title       = {The {Objective-C} Programming Language},
    4646     organization= {Apple Computer Inc.},
    4647     address     = {Cupertino, CA},
    4648     year        = 2003
    4649 }
    4650 
    4651 @online{xcode7,
     4682    key         = {Objective-C},
     4683    title       = {Objective-C},
     4684    publisher   = {Apple Inc.},
     4685    year        = 2015,
     4686    howpublished= {\href{https://developer.apple.com/library/content/documentation/General/Conceptual/DevPedia-CocoaCore/ObjectiveC.html}{https://developer.apple.com/\-library/\-content/\-documentation/\-General/\-Conceptual/\-DevPedia-\-CocoaCore/\-ObjectiveC.html}},
     4687    note        = {Accessed: 2018-03}
     4688}
     4689
     4690@misc{xcode7,
    46524691    keywords    = {objective-c},
    46534692    contributor = {a3moss@uwaterloo.ca},
    4654     author      = {{Xcode}},
    4655     title       = {{Xcode} 7 Release Notes},
     4693    key         = {Xcode},
     4694    title       = {{X}code 7 Release Notes},
    46564695    year        = 2015,
    4657     note        = {\href{https://developer.apple.com/library/content/documentation/Xcode/Conceptual/RN-Xcode-Archive/Chapters/xc7_release_notes.html}{https://developer.apple.com/\-library/\-content/\-documentation/\-Xcode/\-Conceptual/\-RN-Xcode-Archive/\-Chapters/\-xc7\_release\_notes.html}},
    4658     urldate     = {2017-04-04}
     4696    howpublished= {\href{https://developer.apple.com/library/content/documentation/Xcode/Conceptual/RN-Xcode-Archive/Chapters/xc7_release_notes.html}{https://developer.apple.com/\-library/\-content/\-documentation/\-Xcode/\-Conceptual/\-RN-Xcode-Archive/\-Chapters/\-xc7\_release\_notes.html}},
     4697    note        = {Accessed: 2017-04}
    46594698}
    46604699
     
    51965235    year        = 1984,
    51975236    series      = {Computers and their Applications},
    5198     address     = {Market Cross House, Cooper Street, Chichester, West Sussex,
    5199         PO19 1EB, England},
     5237    address     = {Market Cross House, Cooper Street, Chichester, West Sussex, PO19 1EB, England},
    52005238    summary     = {
    52015239        The principles of Procedural Abstraction, Data Type Completeness,
     
    52495287}
    52505288
    5251 @book{PowerPC,
    5252     key         = {PowerPC processor},
    5253     title       = {Programming Environments Manual for 32-Bit Implementations of the PowerPC ArchitectureARM Architecture},
    5254     publisher   = {Freescale Semiconductor},
    5255     volume      = {MPCFPE32B},
    5256     edition     = {Rev. 3},
    5257     month       = 9,
    5258     year        = 2005,
     5289@inproceedings{Rafkind09,
     5290    keywords    = {accurate, C programming language, conservative, garbage collection, precise},
     5291    contributer = {pabuhr@plg},
     5292    author      = {Rafkind, Jon and Wick, Adam and Regehr, John and Flatt, Matthew},
     5293    title       = {Precise Garbage Collection for C},
     5294    booktitle   = {Proceedings of the 2009 International Symposium on Memory Management},
     5295    series      = {ISMM '09},
     5296    year        = {2009},
     5297    location    = {Dublin, Ireland},
     5298    pages       = {39-48},
     5299    publisher   = {ACM},
     5300    address     = {New York, NY, USA},
    52595301}
    52605302
     
    53295371
    53305372@article{psa:persistence,
    5331     keywords    = {persistence, first-class procedures, closure, PS-Algol,
    5332         Abstract Data Types},
     5373    keywords    = {persistence, first-class procedures, closure, PS-Algol, Abstract Data Types},
    53335374    contributer = {gjditchfield@plg},
    53345375    author      = {Malcolm P. Atkinson and Ronald Morrison},
     
    53615402
    53625403@article{Procol89,
    5363     keywords    = {active objects, object-oriented languages,
    5364         object-based languages, explicit per-object protocol},
     5404    keywords    = {active objects, object-oriented languages, object-based languages, explicit per-object protocol},
    53655405    contributer = {akgoel@plg},
    53665406    author      = {Jan van den Bos and Chris Laffra},
     
    53765416}
    53775417
     5418@book{PowerPC,
     5419    key         = {PowerPC processor},
     5420    title       = {Programming Environments Manual for 32-Bit Implementations of the PowerPC ArchitectureARM Architecture},
     5421    publisher   = {Freescale Semiconductor},
     5422    volume      = {MPCFPE32B},
     5423    edition     = {Rev. 3},
     5424    month       = 9,
     5425    year        = 2005,
     5426}
     5427
    53785428@book{Butenhof97,
    53795429    keywords    = {PThreads, concurrency},
     
    54225472    contributer = {pabuhr@plg},
    54235473    key         = {C++98},
    5424     title       = {Programming Languages -- {C}{\kern-.1em\hbox{\large\texttt{+\kern-.25em+}}}},
    5425     organization= {International Standard ISO/IEC 14882:1998 (E)},
    5426     publisher   = {American National Standards Institute},
    5427     address     = {www.ansi.org},
     5474    title       = {{C}{\kern-.1em\hbox{\large\texttt{+\kern-.25em+}}} Programming Language ISO/IEC 14882:1998},
     5475    edition     = {1st},
     5476    publisher   = {International Standard Organization},
     5477    address     = {\href{https://www.iso.org/standard/25845.html}{https://\-www.iso.org/\-standard/\-25845.html}},
    54285478    year        = 1998,
    54295479}
     
    54325482    keywords    = {ISO/IEC C++ 14},
    54335483    contributer = {pabuhr@plg},
    5434     author      = {C++14},
    5435     title       = {Programming Languages -- {C}{\kern-.1em\hbox{\large\texttt{+\kern-.25em+}}} ISO/IEC 14882:2014},
     5484    key         = {C++14},
     5485    title       = {{C}{\kern-.1em\hbox{\large\texttt{+\kern-.25em+}}} Programming Language ISO/IEC 14882:2014},
    54365486    edition     = {4th},
    54375487    publisher   = {International Standard Organization},
     
    58785928
    58795929@mastersthesis{Schluntz17,
     5930    keywords    = {constructors, destructors, tuples},
    58805931    author      = {Robert Schluntz},
    5881     title       = {Resource Management and Tuples in {C}$\mathbf{\forall}$},
     5932    title       = {Resource Management and Tuples in \textsf{C}$\mathbf{\forall}$},
    58825933    school      = {School of Computer Science, University of Waterloo},
    58835934    year        = 2017,
     
    59566007    keywords    = {Rust programming language},
    59576008    contributer = {pabuhr@plg},
    5958     author      = {{Rust}},
    5959     title       = {The {Rust} Programming Language},
    5960     organization= {The Rust Project Developers},
     6009    key         = {Rust},
     6010    title       = {The {R}ust Programming Language},
     6011    address     = {The Rust Project Developers},
    59616012    year        = 2015,
    59626013    note        = {\href{https://doc.rust-lang.org/reference.html}{https://\-doc.rust-lang\-.org/\-reference.html}},
     
    59686019    keywords    = {Scala programming language},
    59696020    contributer = {pabuhr@plg},
    5970     author      = {{Scala}},
    5971     title       = {{Scala} Language Specification, Version 2.11},
    5972     organization= {\'{E}cole Polytechnique F\'{e}d\'{e}rale de Lausanne},
     6021    key         = {Scala},
     6022    title       = {{S}cala Language Specification, Version 2.11},
     6023    address     = {\'{E}cole Polytechnique F\'{e}d\'{e}rale de Lausanne},
    59736024    year        = 2016,
    59746025    note        = {\href{http://www.scala-lang.org/files/archive/spec/2.11}{http://\-www.scala-lang.org/\-files/\-archive/\-spec/\-2.11}},
     
    60506101    number      = 12,
    60516102    pages       = {66-76},
     6103}
     6104
     6105@article{Nickolls08,
     6106    author      = {Nickolls, John and Buck, Ian and Garland, Michael and Skadron, Kevin},
     6107    title       = {Scalable Parallel Programming with CUDA},
     6108    journal     = {Queue},
     6109    volume      = {6},
     6110    number      = {2},
     6111    month       = mar,
     6112    year        = 2008,
     6113    pages       = {40-53},
     6114    publisher   = {ACM},
     6115    address     = {New York, NY, USA},
     6116}
     6117
     6118@inproceedings{Leissa14,
     6119    title       = {{S}ierra: a {SIMD} extension for {C}++},
     6120    author      = {Lei{\ss}a, Roland and Haffner, Immanuel and Hack, Sebastian},
     6121    booktitle   = {Proceedings of the 2014 Workshop on Workshop on programming models for SIMD/Vector processing},
     6122    pages       = {17-24},
     6123    year        = {2014},
     6124    organization= {ACM}
    60526125}
    60536126
     
    62926365@article{Smith98,
    62936366    keywords    = {Polymorphic C},
    6294     contributor = {a3moss@uwaterloo.ca},
    6295     title       = {A sound polymorphic type system for a dialect of C},
     6367    contributor = {a3moss@uwaterloo.ca},
     6368    title       = {A sound polymorphic type system for a dialect of {C}},
    62966369    author      = {Smith, Geoffrey and Volpano, Dennis},
    62976370    journal     = {Science of computer programming},
     
    64016474}
    64026475
    6403 @online{Sutter15,
     6476@misc{Sutter15,
    64046477    contributer = {pabuhr@plg},
    64056478    author      = {Herb Sutter and Bjarne Stroustrup and Gabriel Dos Reis},
     
    64086481    month       = oct,
    64096482    year        = 2015,
    6410     pages       = {1--6},
     6483    pages       = {1-6},
    64116484    numpages    = {6},
    6412     note        = {\href{http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/p0144r0.pdf}{http://\-www.open-std.org/\-jtc1/\-sc22/\-wg21/\-docs/\-papers/\-2015/\-p0144r0.pdf}},
     6485    howpublished= {\href{http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/p0144r0.pdf}{http://\-www.open-std.org/\-jtc1/\-sc22/\-wg21/\-docs/\-papers/\-2015/\-p0144r0.pdf}},
    64136486}
    64146487
     
    66846757}
    66856758
    6686 @online{TIOBE,
    6687     contributer = {pabuhr@plg},
    6688     author      = {{TIOBE Index}},
    6689     year        = {February 2018},
    6690     url         = {http://www.tiobe.com/tiobe_index},
     6759@misc{TIOBE,
     6760    contributer = {pabuhr@plg},
     6761    key         = {TIOBE Index},
     6762    title       = {{TIOBE} Index},
     6763    howpublished= {\href{http://www.tiobe.com/tiobe_index}{http://\-www.tiobe.com/\-tiobe\_index}},
     6764    note        = {Accessed: 2018-09},
    66916765}
    66926766
     
    66996773    month       = sep,
    67006774    year        = 1990,
    6701     note        = {}
    67026775}
    67036776
     
    70067079}
    70077080
    7008 @online{Vala,
     7081@misc{Vala,
    70097082    keywords    = {GObject, Vala},
    70107083    contributor = {a3moss@uwaterloo.ca},
    7011     author      = {{Vala}},
    7012     organization= {The GNOME Project},
    7013     title       = {Vala Reference Manual},
     7084    key         = {Vala},
     7085    organization= {The {GNOME} Project},
     7086    title       = {{V}ala Reference Manual},
    70147087    year        = 2017,
    7015     url         = {https://wiki.gnome.org/Projects/Vala/Manual},
    7016     urldate     = {2017-04-04}
     7088    howpublished= {\url{https://wiki.gnome.org/Projects/Vala/Manual}},
     7089    note        = {Accessed: 2017-04}
    70177090}
    70187091
  • doc/papers/concurrency/.gitignore

    rb2fe1c9 r32cab5b  
    33*.pdf
    44*.ps
     5
     6Paper.out.ps
     7WileyNJD-AMA.bst
  • doc/papers/concurrency/Makefile

    rb2fe1c9 r32cab5b  
    33Build = build
    44Figures = figures
    5 Macros = ../../LaTeXmacros
    6 TeXLIB = .:style:annex:${Macros}:${Build}:../../bibliography:
     5Macros = AMA/AMA-stix/ama
     6TeXLIB = .:annex:../../LaTeXmacros:${Macros}:${Build}:../../bibliography:
    77LaTeX  = TEXINPUTS=${TeXLIB} && export TEXINPUTS && latex -halt-on-error -output-directory=${Build}
    88BibTeX = BIBINPUTS=${TeXLIB} && export BIBINPUTS && bibtex
    99
    10 MAKEFLAGS = --no-print-directory --silent #
     10MAKEFLAGS = --no-print-directory # --silent
    1111VPATH = ${Build} ${Figures}
    1212
     
    4040
    4141DOCUMENT = Paper.pdf
     42BASE = ${basename ${DOCUMENT}}
    4243
    4344# Directives #
     
    4849
    4950clean :
    50         @rm -frv ${DOCUMENT} ${basename ${DOCUMENT}}.ps ${Build}
     51        @rm -frv ${DOCUMENT} ${BASE}.ps WileyNJD-AMA.bst ${BASE}.out.ps ${Build}
    5152
    5253# File Dependencies #
    5354
    54 ${DOCUMENT} : ${basename ${DOCUMENT}}.ps
     55${DOCUMENT} : ${BASE}.ps
    5556        ps2pdf $<
    5657
    57 ${basename ${DOCUMENT}}.ps : ${basename ${DOCUMENT}}.dvi
     58${BASE}.ps : ${BASE}.dvi
    5859        dvips ${Build}/$< -o $@
    5960
    60 ${basename ${DOCUMENT}}.dvi : Makefile ${Build} ${GRAPHS} ${PROGRAMS} ${PICTURES} ${FIGURES} ${SOURCES} \
    61                 ${Macros}/common.tex ${Macros}/indexstyle annex/local.bib ../../bibliography/pl.bib
     61${BASE}.dvi : Makefile ${Build} ${BASE}.out.ps WileyNJD-AMA.bst ${GRAPHS} ${PROGRAMS} ${PICTURES} ${FIGURES} ${SOURCES} \
     62                annex/local.bib ../../bibliography/pl.bib
    6263        # Must have *.aux file containing citations for bibtex
    6364        if [ ! -r ${basename $@}.aux ] ; then ${LaTeX} ${basename $@}.tex ; fi
    64         -${BibTeX} ${Build}/${basename $@}
     65        ${BibTeX} ${Build}/${basename $@}
    6566        # Some citations reference others so run again to resolve these citations
    6667        ${LaTeX} ${basename $@}.tex
    67         -${BibTeX} ${Build}/${basename $@}
     68        ${BibTeX} ${Build}/${basename $@}
    6869        # Run again to finish citations
    6970        ${LaTeX} ${basename $@}.tex
     
    7374${Build}:
    7475        mkdir -p ${Build}
     76
     77${BASE}.out.ps:
     78        ln -fs build/Paper.out.ps .
     79
     80WileyNJD-AMA.bst:
     81        ln -fs AMA/AMA-stix/ama/WileyNJD-AMA.bst .
    7582
    7683%.tex : %.fig
  • doc/papers/concurrency/Paper.tex

    rb2fe1c9 r32cab5b  
    1 % inline code ©...© (copyright symbol) emacs: C-q M-)
    2 % red highlighting ®...® (registered trademark symbol) emacs: C-q M-.
    3 % blue highlighting ß...ß (sharp s symbol) emacs: C-q M-_
    4 % green highlighting ¢...¢ (cent symbol) emacs: C-q M-"
    5 % LaTex escape §...§ (section symbol) emacs: C-q M-'
    6 % keyword escape ¶...¶ (pilcrow symbol) emacs: C-q M-^
    7 % math escape $...$ (dollar symbol)
    8 
    9 \documentclass[10pt]{article}
     1\documentclass[AMA,STIX1COL]{WileyNJD-v2}
     2
     3\articletype{RESEARCH ARTICLE}%
     4
     5\received{26 April 2016}
     6\revised{6 June 2016}
     7\accepted{6 June 2016}
     8
     9\raggedbottom
    1010
    1111%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
    1212
    1313% Latex packages used in the document.
    14 \usepackage[T1]{fontenc}                                        % allow Latin1 (extended ASCII) characters
    15 \usepackage{textcomp}
    16 \usepackage[latin1]{inputenc}
    17 \usepackage{fullpage,times,comment}
    1814\usepackage{epic,eepic}
     15\usepackage{xspace}
     16\usepackage{comment}
    1917\usepackage{upquote}                                            % switch curled `'" to straight
    20 \usepackage{calc}
    21 \usepackage{xspace}
    22 \usepackage[labelformat=simple]{subfig}
     18\usepackage{listings}                                           % format program code
     19\usepackage[labelformat=simple,aboveskip=0pt,farskip=0pt]{subfig}
    2320\renewcommand{\thesubfigure}{(\alph{subfigure})}
    24 \usepackage{graphicx}
    25 \usepackage{tabularx}
    26 \usepackage{multicol}
    27 \usepackage{varioref}
    28 \usepackage{listings}                                           % format program code
    29 \usepackage[flushmargin]{footmisc}                              % support label/reference in footnote
    30 \usepackage{latexsym}                                           % \Box glyph
    31 \usepackage{mathptmx}                                           % better math font with "times"
    32 \usepackage[usenames]{color}
     21\usepackage{siunitx}
     22\sisetup{ binary-units=true }
     23%\input{style}                                                          % bespoke macros used in the document
     24
     25\hypersetup{breaklinks=true}
     26\definecolor{OliveGreen}{cmyk}{0.64 0 0.95 0.40}
     27\definecolor{Mahogany}{cmyk}{0 0.85 0.87 0.35}
     28\definecolor{Plum}{cmyk}{0.50 1 0 0}
     29
    3330\usepackage[pagewise]{lineno}
    3431\renewcommand{\linenumberfont}{\scriptsize\sffamily}
    35 \usepackage{fancyhdr}
    36 \usepackage{float}
    37 \usepackage{siunitx}
    38 \sisetup{ binary-units=true }
    39 \input{style}                                                   % bespoke macros used in the document
    40 \usepackage{url}
    41 \usepackage[dvips,plainpages=false,pdfpagelabels,pdfpagemode=UseNone,colorlinks=true,pagebackref=true,linkcolor=blue,citecolor=blue,urlcolor=blue,pagebackref=true,breaklinks=true]{hyperref}
    42 \usepackage{breakurl}
    43 \urlstyle{rm}
    44 
    45 \setlength{\topmargin}{-0.45in}                         % move running title into header
    46 \setlength{\headsep}{0.25in}
     32
     33\lefthyphenmin=4                                                        % hyphen only after 4 characters
     34\righthyphenmin=4
    4735
    4836%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
     
    5038% Names used in the document.
    5139
    52 \newcommand{\Version}{1.0.0}
    53 \newcommand{\CS}{C\raisebox{-0.9ex}{\large$^\sharp$}\xspace}
     40\newcommand{\CFAIcon}{\textsf{C}\raisebox{\depth}{\rotatebox{180}{\textsf{A}}}\xspace} % Cforall symbolic name
     41\newcommand{\CFA}{\protect\CFAIcon}             % safe for section/caption
     42\newcommand{\CFL}{\textrm{Cforall}\xspace}      % Cforall symbolic name
     43\newcommand{\Celeven}{\textrm{C11}\xspace}      % C11 symbolic name
     44\newcommand{\CC}{\textrm{C}\kern-.1em\hbox{+\kern-.25em+}\xspace} % C++ symbolic name
     45\newcommand{\CCeleven}{\textrm{C}\kern-.1em\hbox{+\kern-.25em+}11\xspace} % C++11 symbolic name
     46\newcommand{\CCfourteen}{\textrm{C}\kern-.1em\hbox{+\kern-.25em+}14\xspace} % C++14 symbolic name
     47\newcommand{\CCseventeen}{\textrm{C}\kern-.1em\hbox{+\kern-.25em+}17\xspace} % C++17 symbolic name
     48\newcommand{\CCtwenty}{\textrm{C}\kern-.1em\hbox{+\kern-.25em+}20\xspace} % C++20 symbolic name
     49\newcommand{\Csharp}{C\raisebox{-0.7ex}{\Large$^\sharp$}\xspace} % C# symbolic name
     50
     51%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
    5452
    5553\newcommand{\Textbf}[2][red]{{\color{#1}{\textbf{#2}}}}
     
    6260\newcommand{\TODO}{{\Textbf{TODO}}}
    6361
    64 
    65 \newsavebox{\LstBox}
    66 
    6762%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
    6863
    69 \setcounter{secnumdepth}{2}                           % number subsubsections
    70 \setcounter{tocdepth}{2}                              % subsubsections in table of contents
    71 % \linenumbers                                          % comment out to turn off line numbering
    72 
    73 \title{Concurrency in \CFA}
    74 \author{Thierry Delisle and Peter A. Buhr, Waterloo, Ontario, Canada}
     64% Default underscore is too low and wide. Cannot use lstlisting "literate" as replacing underscore
     65% removes it as a variable-name character so keywords in variables are highlighted. MUST APPEAR
     66% AFTER HYPERREF.
     67%\DeclareTextCommandDefault{\textunderscore}{\leavevmode\makebox[1.2ex][c]{\rule{1ex}{0.1ex}}}
     68\renewcommand{\textunderscore}{\leavevmode\makebox[1.2ex][c]{\rule{1ex}{0.075ex}}}
     69
     70\makeatletter
     71% parindent is relative, i.e., toggled on/off in environments like itemize, so store the value for
     72% use rather than use \parident directly.
     73\newlength{\parindentlnth}
     74\setlength{\parindentlnth}{\parindent}
     75
     76\newcommand{\LstBasicStyle}[1]{{\lst@basicstyle{\lst@basicstyle{#1}}}}
     77\newcommand{\LstKeywordStyle}[1]{{\lst@basicstyle{\lst@keywordstyle{#1}}}}
     78\newcommand{\LstCommentStyle}[1]{{\lst@basicstyle{\lst@commentstyle{#1}}}}
     79
     80\newlength{\gcolumnposn}                                        % temporary hack because lstlisting does not handle tabs correctly
     81\newlength{\columnposn}
     82\setlength{\gcolumnposn}{3.5in}
     83\setlength{\columnposn}{\gcolumnposn}
     84\newcommand{\C}[2][\@empty]{\ifx#1\@empty\else\global\setlength{\columnposn}{#1}\global\columnposn=\columnposn\fi\hfill\makebox[\textwidth-\columnposn][l]{\lst@basicstyle{\LstCommentStyle{#2}}}}
     85\newcommand{\CRT}{\global\columnposn=\gcolumnposn}
     86
     87% Denote newterms in particular font and index them without particular font and in lowercase, e.g., \newterm{abc}.
     88% The option parameter provides an index term different from the new term, e.g., \newterm[\texttt{abc}]{abc}
     89% The star version does not lowercase the index information, e.g., \newterm*{IBM}.
     90\newcommand{\newtermFontInline}{\emph}
     91\newcommand{\newterm}{\@ifstar\@snewterm\@newterm}
     92\newcommand{\@newterm}[2][\@empty]{\lowercase{\def\temp{#2}}{\newtermFontInline{#2}}\ifx#1\@empty\index{\temp}\else\index{#1@{\protect#2}}\fi}
     93\newcommand{\@snewterm}[2][\@empty]{{\newtermFontInline{#2}}\ifx#1\@empty\index{#2}\else\index{#1@{\protect#2}}\fi}
     94
     95% Latin abbreviation
     96\newcommand{\abbrevFont}{\textit}                       % set empty for no italics
     97\@ifundefined{eg}{
     98\newcommand{\EG}{\abbrevFont{e}.\abbrevFont{g}.}
     99\newcommand*{\eg}{%
     100        \@ifnextchar{,}{\EG}%
     101                {\@ifnextchar{:}{\EG}%
     102                        {\EG,\xspace}}%
     103}}{}%
     104\@ifundefined{ie}{
     105\newcommand{\IE}{\abbrevFont{i}.\abbrevFont{e}.}
     106\newcommand*{\ie}{%
     107        \@ifnextchar{,}{\IE}%
     108                {\@ifnextchar{:}{\IE}%
     109                        {\IE,\xspace}}%
     110}}{}%
     111\@ifundefined{etc}{
     112\newcommand{\ETC}{\abbrevFont{etc}}
     113\newcommand*{\etc}{%
     114        \@ifnextchar{.}{\ETC}%
     115        {\ETC.\xspace}%
     116}}{}%
     117\@ifundefined{etal}{
     118\newcommand{\ETAL}{\abbrevFont{et}~\abbrevFont{al}}
     119\newcommand*{\etal}{%
     120        \@ifnextchar{.}{\protect\ETAL}%
     121                {\protect\ETAL.\xspace}%
     122}}{}%
     123\@ifundefined{viz}{
     124\newcommand{\VIZ}{\abbrevFont{viz}}
     125\newcommand*{\viz}{%
     126        \@ifnextchar{.}{\VIZ}%
     127                {\VIZ.\xspace}%
     128}}{}%
     129\makeatother
     130
     131\newenvironment{cquote}{%
     132        \list{}{\lstset{resetmargins=true,aboveskip=0pt,belowskip=0pt}\topsep=3pt\parsep=0pt\leftmargin=\parindentlnth\rightmargin\leftmargin}%
     133        \item\relax
     134}{%
     135        \endlist
     136}% cquote
     137
     138% CFA programming language, based on ANSI C (with some gcc additions)
     139\lstdefinelanguage{CFA}[ANSI]{C}{
     140        morekeywords={
     141                _Alignas, _Alignof, __alignof, __alignof__, asm, __asm, __asm__, __attribute, __attribute__,
     142                auto, _Bool, catch, catchResume, choose, _Complex, __complex, __complex__, __const, __const__,
     143                coroutine, disable, dtype, enable, __extension__, exception, fallthrough, fallthru, finally,
     144                __float80, float80, __float128, float128, forall, ftype, _Generic, _Imaginary, __imag, __imag__,
     145                inline, __inline, __inline__, __int128, int128, __label__, monitor, mutex, _Noreturn, one_t, or,
     146                otype, restrict, __restrict, __restrict__, __signed, __signed__, _Static_assert, thread,
     147                _Thread_local, throw, throwResume, timeout, trait, try, ttype, typeof, __typeof, __typeof__,
     148                virtual, __volatile, __volatile__, waitfor, when, with, zero_t},
     149        moredirectives={defined,include_next}%
     150}
     151
     152\lstset{
     153language=CFA,
     154columns=fullflexible,
     155basicstyle=\linespread{0.9}\sf,                                                 % reduce line spacing and use sanserif font
     156stringstyle=\tt,                                                                                % use typewriter font
     157tabsize=5,                                                                                              % N space tabbing
     158xleftmargin=\parindentlnth,                                                             % indent code to paragraph indentation
     159%mathescape=true,                                                                               % LaTeX math escape in CFA code $...$
     160escapechar=\$,                                                                                  % LaTeX escape in CFA code
     161keepspaces=true,                                                                                %
     162showstringspaces=false,                                                                 % do not show spaces with cup
     163showlines=true,                                                                                 % show blank lines at end of code
     164aboveskip=4pt,                                                                                  % spacing above/below code block
     165belowskip=3pt,
     166% replace/adjust listing characters that look bad in sanserif
     167literate={-}{\makebox[1ex][c]{\raisebox{0.4ex}{\rule{0.8ex}{0.1ex}}}}1 {^}{\raisebox{0.6ex}{$\scriptstyle\land\,$}}1
     168        {~}{\raisebox{0.3ex}{$\scriptstyle\sim\,$}}1 % {`}{\ttfamily\upshape\hspace*{-0.1ex}`}1
     169        {<-}{$\leftarrow$}2 {=>}{$\Rightarrow$}2 {->}{\makebox[1ex][c]{\raisebox{0.5ex}{\rule{0.8ex}{0.075ex}}}\kern-0.2ex{\textgreater}}2,
     170moredelim=**[is][\color{red}]{`}{`},
     171}% lstset
     172
     173% uC++ programming language, based on ANSI C++
     174\lstdefinelanguage{uC++}[ANSI]{C++}{
     175        morekeywords={
     176                _Accept, _AcceptReturn, _AcceptWait, _Actor, _At, _CatchResume, _Cormonitor, _Coroutine, _Disable,
     177                _Else, _Enable, _Event, _Finally, _Monitor, _Mutex, _Nomutex, _PeriodicTask, _RealTimeTask,
     178                _Resume, _Select, _SporadicTask, _Task, _Timeout, _When, _With, _Throw},
     179}
     180\lstdefinelanguage{Golang}{
     181        morekeywords=[1]{package,import,func,type,struct,return,defer,panic,recover,select,var,const,iota,},
     182        morekeywords=[2]{string,uint,uint8,uint16,uint32,uint64,int,int8,int16,int32,int64,
     183                bool,float32,float64,complex64,complex128,byte,rune,uintptr, error,interface},
     184        morekeywords=[3]{map,slice,make,new,nil,len,cap,copy,close,true,false,delete,append,real,imag,complex,chan,},
     185        morekeywords=[4]{for,break,continue,range,goto,switch,case,fallthrough,if,else,default,},
     186        morekeywords=[5]{Println,Printf,Error,},
     187        sensitive=true,
     188        morecomment=[l]{//},
     189        morecomment=[s]{/*}{*/},
     190        morestring=[b]',
     191        morestring=[b]",
     192        morestring=[s]{`}{`},
     193}
     194
     195\lstnewenvironment{cfa}[1][]
     196{\lstset{#1}}
     197{}
     198\lstnewenvironment{C++}[1][]                            % use C++ style
     199{\lstset{language=C++,moredelim=**[is][\protect\color{red}]{`}{`},#1}\lstset{#1}}
     200{}
     201\lstnewenvironment{uC++}[1][]
     202{\lstset{#1}}
     203{}
     204\lstnewenvironment{Go}[1][]
     205{\lstset{#1}}
     206{}
     207
     208% inline code @...@
     209\lstMakeShortInline@%
     210
     211
     212\title{\texorpdfstring{Concurrency in \protect\CFA}{Concurrency in Cforall}}
     213
     214\author[1]{Thierry Delisle}
     215\author[1]{Peter A. Buhr*}
     216\authormark{Thierry Delisle \textsc{et al}}
     217
     218\address[1]{\orgdiv{Cheriton School of Computer Science}, \orgname{University of Waterloo}, \orgaddress{\state{Ontario}, \country{Canada}}}
     219
     220\corres{*Peter A. Buhr, \email{pabuhr{\char`\@}uwaterloo.ca}}
     221\presentaddress{Cheriton School of Computer Science, University of Waterloo, Waterloo, ON, N2L 3G1, Canada}
     222
     223
     224\abstract[Summary]{
     225\CFA is a modern, polymorphic, \emph{non-object-oriented} extension of the C programming language.
     226This paper discusses the design of the concurrency and parallelism features in \CFA, and the concurrent runtime-system.
     227These features are created from scratch as ISO C lacks concurrency, relying largely on pthreads.
     228Coroutines and lightweight (user) threads are introduced into the language.
     229In addition, monitors are added as a high-level mechanism for mutual exclusion and synchronization.
     230A unique contribution is allowing multiple monitors to be safely acquired simultaneously.
     231All features respect the expectations of C programmers, while being fully integrate with the \CFA polymorphic type-system and other language features.
     232Finally, experimental results are presented to compare the performance of the new features with similar mechanisms in other concurrent programming-languages.
     233}%
     234
     235\keywords{concurrency, parallelism, coroutines, threads, monitors, runtime, C, Cforall}
    75236
    76237
    77238\begin{document}
     239\linenumbers                                            % comment out to turn off line numbering
     240
    78241\maketitle
    79242
    80 \begin{abstract}
    81 \CFA is a modern, \emph{non-object-oriented} extension of the C programming language.
    82 This paper serves as a definition and an implementation for the concurrency and parallelism \CFA offers. These features are created from scratch due to the lack of concurrency in ISO C. Lightweight threads are introduced into the language. In addition, monitors are introduced as a high-level tool for control-flow based synchronization and mutual-exclusion. The main contributions of this paper are two-fold: it extends the existing semantics of monitors introduce by~\cite{Hoare74} to handle monitors in groups and also details the engineering effort needed to introduce these features as core language features. Indeed, these features are added with respect to expectations of C programmers, and integrate with the \CFA type-system and other language features.
    83 \end{abstract}
    84 
    85 %----------------------------------------------------------------------
    86 % MAIN BODY
    87 %----------------------------------------------------------------------
    88 
     243% ======================================================================
    89244% ======================================================================
    90245\section{Introduction}
    91246% ======================================================================
    92 
    93 This paper provides a minimal concurrency \textbf{api} that is simple, efficient and can be reused to build higher-level features. The simplest possible concurrency system is a thread and a lock but this low-level approach is hard to master. An easier approach for users is to support higher-level constructs as the basis of concurrency. Indeed, for highly productive concurrent programming, high-level approaches are much more popular~\cite{HPP:Study}. Examples are task based, message passing and implicit threading. The high-level approach and its minimal \textbf{api} are tested in a dialect of C, called \CFA. Furthermore, the proposed \textbf{api} doubles as an early definition of the \CFA language and library. This paper also provides an implementation of the concurrency library for \CFA as well as all the required language features added to the source-to-source translator.
    94 
    95 There are actually two problems that need to be solved in the design of concurrency for a programming language: which concurrency and which parallelism tools are available to the programmer. While these two concepts are often combined, they are in fact distinct, requiring different tools~\cite{Buhr05a}. Concurrency tools need to handle mutual exclusion and synchronization, while parallelism tools are about performance, cost and resource utilization.
    96 
    97 In the context of this paper, a \textbf{thread} is a fundamental unit of execution that runs a sequence of code, generally on a program stack. Having multiple simultaneous threads gives rise to concurrency and generally requires some kind of locking mechanism to ensure proper execution. Correspondingly, \textbf{concurrency} is defined as the concepts and challenges that occur when multiple independent (sharing memory, timing dependencies, etc.) concurrent threads are introduced. Accordingly, \textbf{locking} (and by extension locks) are defined as a mechanism that prevents the progress of certain threads in order to avoid problems due to concurrency. Finally, in this paper \textbf{parallelism} is distinct from concurrency and is defined as running multiple threads simultaneously. More precisely, parallelism implies \emph{actual} simultaneous execution as opposed to concurrency which only requires \emph{apparent} simultaneous execution. As such, parallelism is only observable in the differences in performance or, more generally, differences in timing.
     247% ======================================================================
     248
     249This paper provides a minimal concurrency \newterm{Abstract Program Interface} (API) that is simple, efficient and can be used to build other concurrency features.
     250While the simplest concurrency system is a thread and a lock, this low-level approach is hard to master.
     251An easier approach for programmers is to support higher-level constructs as the basis of concurrency.
     252Indeed, for highly productive concurrent programming, high-level approaches are much more popular~\cite{Hochstein05}.
     253Examples of high-level approaches are task based~\cite{TBB}, message passing~\cite{Erlang,MPI}, and implicit threading~\cite{OpenMP}.
     254
     255This paper used the following terminology.
     256A \newterm{thread} is a fundamental unit of execution that runs a sequence of code and requires a stack to maintain state.
     257Multiple simultaneous threads gives rise to \newterm{concurrency}, which requires locking to ensure safe communication and access to shared data.
     258% Correspondingly, concurrency is defined as the concepts and challenges that occur when multiple independent (sharing memory, timing dependencies, \etc) concurrent threads are introduced.
     259\newterm{Locking}, and by extension locks, are defined as a mechanism to prevent progress of threads to provide safety.
     260\newterm{Parallelism} is running multiple threads simultaneously.
     261Parallelism implies \emph{actual} simultaneous execution, where concurrency only requires \emph{apparent} simultaneous execution.
     262As such, parallelism is only observable in differences in performance, which is observed through differences in timing.
     263
     264Hence, there are two problems to be solved in the design of concurrency for a programming language: concurrency and parallelism.
     265While these two concepts are often combined, they are in fact distinct, requiring different tools~\cite[\S~2]{Buhr05a}.
     266Concurrency tools handle synchronization and mutual exclusion, while parallelism tools handle performance, cost and resource utilization.
     267
     268The proposed concurrency API is implemented in a dialect of C, called \CFA.
     269The paper discusses how the language features are added to the \CFA translator with respect to parsing, semantic, and type checking, and the corresponding high-perforamnce runtime-library to implement the concurrency features.
    98270
    99271% ======================================================================
     
    105277The following is a quick introduction to the \CFA language, specifically tailored to the features needed to support concurrency.
    106278
    107 \CFA is an extension of ISO-C and therefore supports all of the same paradigms as C. It is a non-object-oriented system-language, meaning most of the major abstractions have either no runtime overhead or can be opted out easily. Like C, the basics of \CFA revolve around structures and routines, which are thin abstractions over machine code. The vast majority of the code produced by the \CFA translator respects memory layouts and calling conventions laid out by C. Interestingly, while \CFA is not an object-oriented language, lacking the concept of a receiver (e.g., {\tt this}), it does have some notion of objects\footnote{C defines the term objects as : ``region of data storage in the execution environment, the contents of which can represent
    108 values''~\cite[3.15]{C11}}, most importantly construction and destruction of objects. Most of the following code examples can be found on the \CFA website~\cite{www-cfa}.
    109 
    110 % ======================================================================
     279\CFA is an extension of ISO-C and therefore supports all of the same paradigms as C.
     280It is a non-object-oriented system-language, meaning most of the major abstractions have either no runtime overhead or can be opted out easily.
     281Like C, the basics of \CFA revolve around structures and routines, which are thin abstractions over machine code.
     282The vast majority of the code produced by the \CFA translator respects memory layouts and calling conventions laid out by C.
     283Interestingly, while \CFA is not an object-oriented language, lacking the concept of a receiver (\eg {\tt this}), it does have some notion of objects\footnote{C defines the term objects as : ``region of data storage in the execution environment, the contents of which can represent
     284values''~\cite[3.15]{C11}}, most importantly construction and destruction of objects.
     285Most of the following code examples can be found on the \CFA website~\cite{Cforall}.
     286
     287
    111288\subsection{References}
    112289
    113 Like \CC, \CFA introduces rebind-able references providing multiple dereferencing as an alternative to pointers. In regards to concurrency, the semantic difference between pointers and references are not particularly relevant, but since this document uses mostly references, here is a quick overview of the semantics:
    114 \begin{cfacode}
     290Like \CC, \CFA introduces rebind-able references providing multiple dereferencing as an alternative to pointers.
     291In regards to concurrency, the semantic difference between pointers and references are not particularly relevant, but since this document uses mostly references, here is a quick overview of the semantics:
     292\begin{cfa}
    115293int x, *p1 = &x, **p2 = &p1, ***p3 = &p2,
    116294        &r1 = x,    &&r2 = r1,   &&&r3 = r2;
    117 ***p3 = 3;                                                      //change x
    118 r3    = 3;                                                      //change x, ***r3
    119 **p3  = ...;                                            //change p1
    120 *p3   = ...;                                            //change p2
    121 int y, z, & ar[3] = {x, y, z};          //initialize array of references
    122 typeof( ar[1]) p;                                       //is int, referenced object type
    123 typeof(&ar[1]) q;                                       //is int &, reference type
    124 sizeof( ar[1]) == sizeof(int);          //is true, referenced object size
    125 sizeof(&ar[1]) == sizeof(int *);        //is true, reference size
    126 \end{cfacode}
     295***p3 = 3;                                                      $\C{// change x}$
     296r3    = 3;                                                      $\C{// change x, ***r3}$
     297**p3  = ...;                                            $\C{// change p1}$
     298*p3   = ...;                                            $\C{// change p2}$
     299int y, z, & ar[3] = {x, y, z};          $\C{// initialize array of references}$
     300typeof( ar[1]) p;                                       $\C{// is int, referenced object type}$
     301typeof(&ar[1]) q;                                       $\C{// is int \&, reference type}$
     302sizeof( ar[1]) == sizeof(int);          $\C{// is true, referenced object size}$
     303sizeof(&ar[1]) == sizeof(int *);        $\C{// is true, reference size}$
     304\end{cfa}
    127305The important take away from this code example is that a reference offers a handle to an object, much like a pointer, but which is automatically dereferenced for convenience.
    128306
     
    130308\subsection{Overloading}
    131309
    132 Another important feature of \CFA is function overloading as in Java and \CC, where routines with the same name are selected based on the number and type of the arguments. As well, \CFA uses the return type as part of the selection criteria, as in Ada~\cite{Ada}. For routines with multiple parameters and returns, the selection is complex.
    133 \begin{cfacode}
    134 //selection based on type and number of parameters
    135 void f(void);                   //(1)
    136 void f(char);                   //(2)
    137 void f(int, double);    //(3)
    138 f();                                    //select (1)
    139 f('a');                                 //select (2)
    140 f(3, 5.2);                              //select (3)
    141 
    142 //selection based on  type and number of returns
    143 char   f(int);                  //(1)
    144 double f(int);                  //(2)
    145 char   c = f(3);                //select (1)
    146 double d = f(4);                //select (2)
    147 \end{cfacode}
    148 This feature is particularly important for concurrency since the runtime system relies on creating different types to represent concurrency objects. Therefore, overloading is necessary to prevent the need for long prefixes and other naming conventions that prevent name clashes. As seen in section \ref{basics}, routine \code{main} is an example that benefits from overloading.
     310Another important feature of \CFA is function overloading as in Java and \CC, where routines with the same name are selected based on the number and type of the arguments.
     311As well, \CFA uses the return type as part of the selection criteria, as in Ada~\cite{Ada}.
     312For routines with multiple parameters and returns, the selection is complex.
     313\begin{cfa}
     314// selection based on type and number of parameters
     315void f(void);                   $\C{// (1)}$
     316void f(char);                   $\C{// (2)}$
     317void f(int, double);    $\C{// (3)}$
     318f();                                    $\C{// select (1)}$
     319f('a');                                 $\C{// select (2)}$
     320f(3, 5.2);                              $\C{// select (3)}$
     321
     322// selection based on  type and number of returns
     323char   f(int);                  $\C{// (1)}$
     324double f(int);                  $\C{// (2)}$
     325char   c = f(3);                $\C{// select (1)}$
     326double d = f(4);                $\C{// select (2)}$
     327\end{cfa}
     328This feature is particularly important for concurrency since the runtime system relies on creating different types to represent concurrency objects.
     329Therefore, overloading is necessary to prevent the need for long prefixes and other naming conventions that prevent name clashes.
     330As seen in section \ref{basics}, routine @main@ is an example that benefits from overloading.
    149331
    150332% ======================================================================
    151333\subsection{Operators}
    152 Overloading also extends to operators. The syntax for denoting operator-overloading is to name a routine with the symbol of the operator and question marks where the arguments of the operation appear, e.g.:
    153 \begin{cfacode}
    154 int ++? (int op);                       //unary prefix increment
    155 int ?++ (int op);                       //unary postfix increment
    156 int ?+? (int op1, int op2);             //binary plus
    157 int ?<=?(int op1, int op2);             //binary less than
    158 int ?=? (int & op1, int op2);           //binary assignment
    159 int ?+=?(int & op1, int op2);           //binary plus-assignment
     334Overloading also extends to operators.
     335The syntax for denoting operator-overloading is to name a routine with the symbol of the operator and question marks where the arguments of the operation appear, \eg:
     336\begin{cfa}
     337int ++? (int op);                       $\C{// unary prefix increment}$
     338int ?++ (int op);                       $\C{// unary postfix increment}$
     339int ?+? (int op1, int op2);             $\C{// binary plus}$
     340int ?<=?(int op1, int op2);             $\C{// binary less than}$
     341int ?=? (int & op1, int op2);           $\C{// binary assignment}$
     342int ?+=?(int & op1, int op2);           $\C{// binary plus-assignment}$
    160343
    161344struct S {int i, j;};
    162 S ?+?(S op1, S op2) {                           //add two structures
     345S ?+?(S op1, S op2) {                           $\C{// add two structures}$
    163346        return (S){op1.i + op2.i, op1.j + op2.j};
    164347}
    165348S s1 = {1, 2}, s2 = {2, 3}, s3;
    166 s3 = s1 + s2;                                           //compute sum: s3 == {2, 5}
    167 \end{cfacode}
     349s3 = s1 + s2;                                           $\C{// compute sum: s3 == {2, 5}}$
     350\end{cfa}
    168351While concurrency does not use operator overloading directly, this feature is more important as an introduction for the syntax of constructors.
    169352
    170353% ======================================================================
    171354\subsection{Constructors/Destructors}
    172 Object lifetime is often a challenge in concurrency. \CFA uses the approach of giving concurrent meaning to object lifetime as a means of synchronization and/or mutual exclusion. Since \CFA relies heavily on the lifetime of objects, constructors and destructors is a core feature required for concurrency and parallelism. \CFA uses the following syntax for constructors and destructors:
    173 \begin{cfacode}
     355Object lifetime is often a challenge in concurrency. \CFA uses the approach of giving concurrent meaning to object lifetime as a means of synchronization and/or mutual exclusion.
     356Since \CFA relies heavily on the lifetime of objects, constructors and destructors is a core feature required for concurrency and parallelism. \CFA uses the following syntax for constructors and destructors:
     357\begin{cfa}
    174358struct S {
    175359        size_t size;
    176360        int * ia;
    177361};
    178 void ?{}(S & s, int asize) {    //constructor operator
    179         s.size = asize;                         //initialize fields
     362void ?{}(S & s, int asize) {    $\C{// constructor operator}$
     363        s.size = asize;                         $\C{// initialize fields}$
    180364        s.ia = calloc(size, sizeof(S));
    181365}
    182 void ^?{}(S & s) {                              //destructor operator
    183         free(ia);                                       //de-initialization fields
     366void ^?{}(S & s) {                              $\C{// destructor operator}$
     367        free(ia);                                       $\C{// de-initialization fields}$
    184368}
    185369int main() {
    186         S x = {10}, y = {100};          //implicit calls: ?{}(x, 10), ?{}(y, 100)
    187         ...                                                     //use x and y
    188         ^x{};  ^y{};                            //explicit calls to de-initialize
    189         x{20};  y{200};                         //explicit calls to reinitialize
    190         ...                                                     //reuse x and y
    191 }                                                               //implicit calls: ^?{}(y), ^?{}(x)
    192 \end{cfacode}
    193 The language guarantees that every object and all their fields are constructed. Like \CC, construction of an object is automatically done on allocation and destruction of the object is done on deallocation. Allocation and deallocation can occur on the stack or on the heap.
    194 \begin{cfacode}
     370        S x = {10}, y = {100};          $\C{// implicit calls: ?\{\}(x, 10), ?\{\}(y, 100)}$
     371        ...                                                     $\C{// use x and y}$
     372        ^x{};  ^y{};                            $\C{// explicit calls to de-initialize}$
     373        x{20};  y{200};                         $\C{// explicit calls to reinitialize}$
     374        ...                                                     $\C{// reuse x and y}$
     375}                                                               $\C{// implicit calls: \^?\{\}(y), \^?\{\}(x)}$
     376\end{cfa}
     377The language guarantees that every object and all their fields are constructed.
     378Like \CC, construction of an object is automatically done on allocation and destruction of the object is done on deallocation.
     379Allocation and deallocation can occur on the stack or on the heap.
     380\begin{cfa}
    195381{
    196         struct S s = {10};      //allocation, call constructor
     382        struct S s = {10};      $\C{// allocation, call constructor}$
    197383        ...
    198 }                                               //deallocation, call destructor
    199 struct S * s = new();   //allocation, call constructor
     384}                                               $\C{// deallocation, call destructor}$
     385struct S * s = new();   $\C{// allocation, call constructor}$
    200386...
    201 delete(s);                              //deallocation, call destructor
    202 \end{cfacode}
    203 Note that like \CC, \CFA introduces \code{new} and \code{delete}, which behave like \code{malloc} and \code{free} in addition to constructing and destructing objects, after calling \code{malloc} and before calling \code{free}, respectively.
     387delete(s);                              $\C{// deallocation, call destructor}$
     388\end{cfa}
     389Note that like \CC, \CFA introduces @new@ and @delete@, which behave like @malloc@ and @free@ in addition to constructing and destructing objects, after calling @malloc@ and before calling @free@, respectively.
    204390
    205391% ======================================================================
    206392\subsection{Parametric Polymorphism}
    207393\label{s:ParametricPolymorphism}
    208 Routines in \CFA can also be reused for multiple types. This capability is done using the \code{forall} clauses, which allow separately compiled routines to support generic usage over multiple types. For example, the following sum function works for any type that supports construction from 0 and addition:
    209 \begin{cfacode}
    210 //constraint type, 0 and +
     394Routines in \CFA can also be reused for multiple types.
     395This capability is done using the @forall@ clauses, which allow separately compiled routines to support generic usage over multiple types.
     396For example, the following sum function works for any type that supports construction from 0 and addition:
     397\begin{cfa}
     398// constraint type, 0 and +
    211399forall(otype T | { void ?{}(T *, zero_t); T ?+?(T, T); })
    212400T sum(T a[ ], size_t size) {
    213         T total = 0;                            //construct T from 0
     401        T total = 0;                            $\C{// construct T from 0}$
    214402        for(size_t i = 0; i < size; i++)
    215                 total = total + a[i];   //select appropriate +
     403                total = total + a[i];   $\C{// select appropriate +}$
    216404        return total;
    217405}
    218406
    219407S sa[5];
    220 int i = sum(sa, 5);                             //use S's 0 construction and +
    221 \end{cfacode}
    222 
    223 Since writing constraints on types can become cumbersome for more constrained functions, \CFA also has the concept of traits. Traits are named collection of constraints that can be used both instead and in addition to regular constraints:
    224 \begin{cfacode}
     408int i = sum(sa, 5);                             $\C{// use S's 0 construction and +}$
     409\end{cfa}
     410
     411Since writing constraints on types can become cumbersome for more constrained functions, \CFA also has the concept of traits.
     412Traits are named collection of constraints that can be used both instead and in addition to regular constraints:
     413\begin{cfa}
    225414trait summable( otype T ) {
    226         void ?{}(T *, zero_t);          //constructor from 0 literal
    227         T ?+?(T, T);                            //assortment of additions
     415        void ?{}(T *, zero_t);          $\C{// constructor from 0 literal}$
     416        T ?+?(T, T);                            $\C{// assortment of additions}$
    228417        T ?+=?(T *, T);
    229418        T ++?(T *);
    230419        T ?++(T *);
    231420};
    232 forall( otype T | summable(T) ) //use trait
     421forall( otype T | summable(T) ) $\C{// use trait}$
    233422T sum(T a[], size_t size);
    234 \end{cfacode}
    235 
    236 Note that the type use for assertions can be either an \code{otype} or a \code{dtype}. Types declared as \code{otype} refer to ``complete'' objects, i.e., objects with a size, a default constructor, a copy constructor, a destructor and an assignment operator. Using \code{dtype,} on the other hand, has none of these assumptions but is extremely restrictive, it only guarantees the object is addressable.
     423\end{cfa}
     424
     425Note that the type use for assertions can be either an @otype@ or a @dtype@.
     426Types declared as @otype@ refer to ``complete'' objects, \ie objects with a size, a default constructor, a copy constructor, a destructor and an assignment operator.
     427Using @dtype@, on the other hand, has none of these assumptions but is extremely restrictive, it only guarantees the object is addressable.
    237428
    238429% ======================================================================
    239430\subsection{with Clause/Statement}
    240 Since \CFA lacks the concept of a receiver, certain functions end up needing to repeat variable names often. To remove this inconvenience, \CFA provides the \code{with} statement, which opens an aggregate scope making its fields directly accessible (like Pascal).
    241 \begin{cfacode}
     431Since \CFA lacks the concept of a receiver, certain functions end up needing to repeat variable names often.
     432To remove this inconvenience, \CFA provides the @with@ statement, which opens an aggregate scope making its fields directly accessible (like Pascal).
     433\begin{cfa}
    242434struct S { int i, j; };
    243 int mem(S & this) with (this)           //with clause
    244         i = 1;                                                  //this->i
    245         j = 2;                                                  //this->j
     435int mem(S & this) with (this)           $\C{// with clause}$
     436        i = 1;                                                  $\C{// this->i}$
     437        j = 2;                                                  $\C{// this->j}$
    246438}
    247439int foo() {
    248440        struct S1 { ... } s1;
    249441        struct S2 { ... } s2;
    250         with (s1)                                               //with statement
     442        with (s1)                                               $\C{// with statement}$
    251443        {
    252                 //access fields of s1 without qualification
    253                 with (s2)                                       //nesting
     444                // access fields of s1 without qualification
     445                with (s2)                                       $\C{// nesting}$
    254446                {
    255                         //access fields of s1 and s2 without qualification
     447                        // access fields of s1 and s2 without qualification
    256448                }
    257449        }
    258         with (s1, s2)                                   //scopes open in parallel
     450        with (s1, s2)                                   $\C{// scopes open in parallel}$
    259451        {
    260                 //access fields of s1 and s2 without qualification
     452                // access fields of s1 and s2 without qualification
    261453        }
    262454}
    263 \end{cfacode}
    264 
    265 For more information on \CFA see \cite{cforall-ug,rob-thesis,www-cfa}.
     455\end{cfa}
     456
     457For more information on \CFA see \cite{cforall-ug,Schluntz17,www-cfa}.
    266458
    267459% ======================================================================
     
    270462% ======================================================================
    271463% ======================================================================
    272 Before any detailed discussion of the concurrency and parallelism in \CFA, it is important to describe the basics of concurrency and how they are expressed in \CFA user code.
    273 
    274 \section{Basics of concurrency}
    275 At its core, concurrency is based on having multiple call-stacks and scheduling among threads of execution executing on these stacks. Concurrency without parallelism only requires having multiple call stacks (or contexts) for a single thread of execution.
    276 
    277 Execution with a single thread and multiple stacks where the thread is self-scheduling deterministically across the stacks is called coroutining. Execution with a single and multiple stacks but where the thread is scheduled by an oracle (non-deterministic from the thread's perspective) across the stacks is called concurrency.
    278 
    279 Therefore, a minimal concurrency system can be achieved by creating coroutines (see Section \ref{coroutine}), which instead of context-switching among each other, always ask an oracle where to context-switch next. While coroutines can execute on the caller's stack-frame, stack-full coroutines allow full generality and are sufficient as the basis for concurrency. The aforementioned oracle is a scheduler and the whole system now follows a cooperative threading-model (a.k.a., non-preemptive scheduling). The oracle/scheduler can either be a stack-less or stack-full entity and correspondingly require one or two context-switches to run a different coroutine. In any case, a subset of concurrency related challenges start to appear. For the complete set of concurrency challenges to occur, the only feature missing is preemption.
    280 
    281 A scheduler introduces order of execution uncertainty, while preemption introduces uncertainty about where context switches occur. Mutual exclusion and synchronization are ways of limiting non-determinism in a concurrent system. Now it is important to understand that uncertainty is desirable; uncertainty can be used by runtime systems to significantly increase performance and is often the basis of giving a user the illusion that tasks are running in parallel. Optimal performance in concurrent applications is often obtained by having as much non-determinism as correctness allows.
    282 
    283 \section{\protect\CFA's Thread Building Blocks}
    284 One of the important features that are missing in C is threading\footnote{While the C11 standard defines a ``threads.h'' header, it is minimal and defined as optional. As such, library support for threading is far from widespread. At the time of writing the paper, neither \texttt{gcc} nor \texttt{clang} support ``threads.h'' in their respective standard libraries.}. On modern architectures, a lack of threading is unacceptable~\cite{Sutter05, Sutter05b}, and therefore modern programming languages must have the proper tools to allow users to write efficient concurrent programs to take advantage of parallelism. As an extension of C, \CFA needs to express these concepts in a way that is as natural as possible to programmers familiar with imperative languages. And being a system-level language means programmers expect to choose precisely which features they need and which cost they are willing to pay.
    285 
    286 \section{Coroutines: A Stepping Stone}\label{coroutine}
    287 While the main focus of this proposal is concurrency and parallelism, it is important to address coroutines, which are actually a significant building block of a concurrency system. \textbf{Coroutine}s are generalized routines which have predefined points where execution is suspended and can be resumed at a later time. Therefore, they need to deal with context switches and other context-management operations. This proposal includes coroutines both as an intermediate step for the implementation of threads, and a first-class feature of \CFA. Furthermore, many design challenges of threads are at least partially present in designing coroutines, which makes the design effort that much more relevant. The core \textbf{api} of coroutines revolves around two features: independent call-stacks and \code{suspend}/\code{resume}.
    288 
    289 \begin{table}
    290 \begin{center}
    291 \begin{tabular}{c @{\hskip 0.025in}|@{\hskip 0.025in} c @{\hskip 0.025in}|@{\hskip 0.025in} c}
    292 \begin{ccode}[tabsize=2]
    293 //Using callbacks
    294 void fibonacci_func(
    295         int n,
    296         void (*callback)(int)
    297 ) {
    298         int first = 0;
    299         int second = 1;
    300         int next, i;
    301         for(i = 0; i < n; i++)
    302         {
    303                 if(i <= 1)
    304                         next = i;
    305                 else {
    306                         next = f1 + f2;
    307                         f1 = f2;
    308                         f2 = next;
    309                 }
    310                 callback(next);
     464
     465At its core, concurrency is based on having multiple call-stacks and scheduling among threads of execution executing on these stacks.
     466Multiple call stacks (or contexts) and a single thread of execution does \emph{not} imply concurrency.
     467Execution with a single thread and multiple stacks where the thread is deterministically self-scheduling across the stacks is called \newterm{coroutining};
     468execution with a single thread and multiple stacks but where the thread is scheduled by an oracle (non-deterministic from the thread's perspective) across the stacks is called concurrency~\cite[\S~3]{Buhr05a}.
     469Therefore, a minimal concurrency system can be achieved using coroutines (see Section \ref{coroutine}), which instead of context-switching among each other, always defer to an oracle for where to context-switch next.
     470
     471While coroutines can execute on the caller's stack-frame, stack-full coroutines allow full generality and are sufficient as the basis for concurrency.
     472The aforementioned oracle is a scheduler and the whole system now follows a cooperative threading-model (a.k.a., non-preemptive scheduling).
     473The oracle/scheduler can either be a stack-less or stack-full entity and correspondingly require one or two context-switches to run a different coroutine.
     474In any case, a subset of concurrency related challenges start to appear.
     475For the complete set of concurrency challenges to occur, the only feature missing is preemption.
     476
     477A scheduler introduces order of execution uncertainty, while preemption introduces uncertainty about where context switches occur.
     478Mutual exclusion and synchronization are ways of limiting non-determinism in a concurrent system.
     479Now it is important to understand that uncertainty is desirable; uncertainty can be used by runtime systems to significantly increase performance and is often the basis of giving a user the illusion that tasks are running in parallel.
     480Optimal performance in concurrent applications is often obtained by having as much non-determinism as correctness allows.
     481
     482
     483\subsection{\protect\CFA's Thread Building Blocks}
     484
     485One of the important features that are missing in C is threading\footnote{While the C11 standard defines a ``threads.h'' header, it is minimal and defined as optional.
     486As such, library support for threading is far from widespread.
     487At the time of writing the paper, neither \protect\lstinline|gcc| nor \protect\lstinline|clang| support ``threads.h'' in their standard libraries.}.
     488On modern architectures, a lack of threading is unacceptable~\cite{Sutter05, Sutter05b}, and therefore modern programming languages must have the proper tools to allow users to write efficient concurrent programs to take advantage of parallelism.
     489As an extension of C, \CFA needs to express these concepts in a way that is as natural as possible to programmers familiar with imperative languages.
     490And being a system-level language means programmers expect to choose precisely which features they need and which cost they are willing to pay.
     491
     492
     493\subsection{Coroutines: A Stepping Stone}\label{coroutine}
     494
     495While the focus of this proposal is concurrency and parallelism, it is important to address coroutines, which are a significant building block of a concurrency system.
     496\newterm{Coroutine}s are generalized routines with points where execution is suspended and resumed at a later time.
     497Suspend/resume is a context switche and coroutines have other context-management operations.
     498Many design challenges of threads are partially present in designing coroutines, which makes the design effort relevant.
     499The core \textbf{api} of coroutines has two features: independent call-stacks and @suspend@/@resume@.
     500
     501A coroutine handles the class of problems that need to retain state between calls (\eg plugin, device driver, finite-state machine).
     502For example, a problem made easier with coroutines is unbounded generators, \eg generating an infinite sequence of Fibonacci numbers:
     503\begin{displaymath}
     504f(n) = \left \{
     505\begin{array}{ll}
     5060                               & n = 0         \\
     5071                               & n = 1         \\
     508f(n-1) + f(n-2) & n \ge 2       \\
     509\end{array}
     510\right.
     511\end{displaymath}
     512Figure~\ref{f:C-fibonacci} shows conventional approaches for writing a Fibonacci generator in C.
     513
     514Figure~\ref{f:GlobalVariables} illustrates the following problems:
     515unencapsulated global variables necessary to retain state between calls;
     516only one fibonacci generator can run at a time;
     517execution state must be explicitly retained.
     518Figure~\ref{f:ExternalState} addresses these issues:
     519unencapsulated program global variables become encapsulated structure variables;
     520multiple fibonacci generators can run at a time by declaring multiple fibonacci objects;
     521explicit execution state is removed by precomputing the first two Fibonacci numbers and returning $f(n-2)$.
     522
     523\begin{figure}
     524\centering
     525\newbox\myboxA
     526\begin{lrbox}{\myboxA}
     527\begin{lstlisting}[aboveskip=0pt,belowskip=0pt]
     528`int f1, f2, state = 1;`   // single global variables
     529int fib() {
     530        int fn;
     531        `switch ( state )` {  // explicit execution state
     532          case 1: fn = 0;  f1 = fn;  state = 2;  break;
     533          case 2: fn = 1;  f2 = f1;  f1 = fn;  state = 3;  break;
     534          case 3: fn = f1 + f2;  f2 = f1;  f1 = fn;  break;
    311535        }
    312 }
    313 
     536        return fn;
     537}
    314538int main() {
    315         void print_fib(int n) {
    316                 printf("%d\n", n);
     539
     540        for ( int i = 0; i < 10; i += 1 ) {
     541                printf( "%d\n", fib() );
    317542        }
    318 
    319         fibonacci_func(
    320                 10, print_fib
    321         );
    322 
    323 
    324 
    325 }
    326 \end{ccode}&\begin{ccode}[tabsize=2]
    327 //Using output array
    328 void fibonacci_array(
    329         int n,
    330         int* array
    331 ) {
    332         int f1 = 0; int f2 = 1;
    333         int next, i;
    334         for(i = 0; i < n; i++)
    335         {
    336                 if(i <= 1)
    337                         next = i;
    338                 else {
    339                         next = f1 + f2;
    340                         f1 = f2;
    341                         f2 = next;
    342                 }
    343                 array[i] = next;
     543}
     544\end{lstlisting}
     545\end{lrbox}
     546
     547\newbox\myboxB
     548\begin{lrbox}{\myboxB}
     549\begin{lstlisting}[aboveskip=0pt,belowskip=0pt]
     550#define FIB_INIT `{ 0, 1 }`
     551typedef struct { int f2, f1; } Fib;
     552int fib( Fib * f ) {
     553
     554        int ret = f->f2;
     555        int fn = f->f1 + f->f2;
     556        f->f2 = f->f1; f->f1 = fn;
     557
     558        return ret;
     559}
     560int main() {
     561        Fib f1 = FIB_INIT, f2 = FIB_INIT;
     562        for ( int i = 0; i < 10; i += 1 ) {
     563                printf( "%d %d\n", fib( &f1 ), fib( &f2 ) );
    344564        }
    345565}
    346 
    347 
     566\end{lstlisting}
     567\end{lrbox}
     568
     569\subfloat[3 States: global variables]{\label{f:GlobalVariables}\usebox\myboxA}
     570\qquad
     571\subfloat[1 State: external variables]{\label{f:ExternalState}\usebox\myboxB}
     572\caption{C Fibonacci Implementations}
     573\label{f:C-fibonacci}
     574
     575\bigskip
     576
     577\newbox\myboxA
     578\begin{lrbox}{\myboxA}
     579\begin{lstlisting}[aboveskip=0pt,belowskip=0pt]
     580`coroutine` Fib { int fn; };
     581void main( Fib & f ) with( f ) {
     582        int f1, f2;
     583        fn = 0;  f1 = fn;  `suspend()`;
     584        fn = 1;  f2 = f1;  f1 = fn;  `suspend()`;
     585        for ( ;; ) {
     586                fn = f1 + f2;  f2 = f1;  f1 = fn;  `suspend()`;
     587        }
     588}
     589int next( Fib & fib ) with( fib ) {
     590        `resume( fib );`
     591        return fn;
     592}
    348593int main() {
    349         int a[10];
    350 
    351         fibonacci_func(
    352                 10, a
    353         );
    354 
    355         for(int i=0;i<10;i++){
    356                 printf("%d\n", a[i]);
    357         }
    358 
    359 }
    360 \end{ccode}&\begin{ccode}[tabsize=2]
    361 //Using external state
    362 typedef struct {
    363         int f1, f2;
    364 } Iterator_t;
    365 
    366 int fibonacci_state(
    367         Iterator_t* it
    368 ) {
    369         int f;
    370         f = it->f1 + it->f2;
    371         it->f2 = it->f1;
    372         it->f1 = max(f,1);
    373         return f;
    374 }
    375 
    376 
    377 
    378 
    379 
    380 
    381 
    382 int main() {
    383         Iterator_t it={0,0};
    384 
    385         for(int i=0;i<10;i++){
    386                 printf("%d\n",
    387                         fibonacci_state(
    388                                 &it
    389                         );
    390                 );
    391         }
    392 
    393 }
    394 \end{ccode}
    395 \end{tabular}
    396 \end{center}
    397 \caption{Different implementations of a Fibonacci sequence generator in C.}
    398 \label{lst:fibonacci-c}
    399 \end{table}
    400 
    401 A good example of a problem made easier with coroutines is generators, e.g., generating the Fibonacci sequence. This problem comes with the challenge of decoupling how a sequence is generated and how it is used. Listing \ref{lst:fibonacci-c} shows conventional approaches to writing generators in C. All three of these approach suffer from strong coupling. The left and centre approaches require that the generator have knowledge of how the sequence is used, while the rightmost approach requires holding internal state between calls on behalf of the generator and makes it much harder to handle corner cases like the Fibonacci seed.
    402 
    403 Listing \ref{lst:fibonacci-cfa} is an example of a solution to the Fibonacci problem using \CFA coroutines, where the coroutine stack holds sufficient state for the next generation. This solution has the advantage of having very strong decoupling between how the sequence is generated and how it is used. Indeed, this version is as easy to use as the \code{fibonacci_state} solution, while the implementation is very similar to the \code{fibonacci_func} example.
    404 
    405 \begin{figure}
    406 \begin{cfacode}[caption={Implementation of Fibonacci using coroutines},label={lst:fibonacci-cfa}]
    407 coroutine Fibonacci {
    408         int fn; //used for communication
    409 };
    410 
    411 void ?{}(Fibonacci& this) { //constructor
    412         this.fn = 0;
    413 }
    414 
    415 //main automatically called on first resume
    416 void main(Fibonacci& this) with (this) {
    417         int fn1, fn2;           //retained between resumes
    418         fn  = 0;
    419         fn1 = fn;
    420         suspend(this);          //return to last resume
    421 
    422         fn  = 1;
    423         fn2 = fn1;
    424         fn1 = fn;
    425         suspend(this);          //return to last resume
    426 
    427         for ( ;; ) {
    428                 fn  = fn1 + fn2;
    429                 fn2 = fn1;
    430                 fn1 = fn;
    431                 suspend(this);  //return to last resume
    432         }
    433 }
    434 
    435 int next(Fibonacci& this) {
    436         resume(this); //transfer to last suspend
    437         return this.fn;
    438 }
    439 
    440 void main() { //regular program main
    441         Fibonacci f1, f2;
     594        Fib f1, f2;
    442595        for ( int i = 1; i <= 10; i += 1 ) {
    443596                sout | next( f1 ) | next( f2 ) | endl;
    444597        }
    445598}
    446 \end{cfacode}
     599\end{lstlisting}
     600\end{lrbox}
     601\newbox\myboxB
     602\begin{lrbox}{\myboxB}
     603\begin{lstlisting}[aboveskip=0pt,belowskip=0pt]
     604`coroutine` Fib { int ret; };
     605void main( Fib & f ) with( f ) {
     606        int fn, f1 = 1, f2 = 0;
     607        for ( ;; ) {
     608                ret = f2;
     609
     610                fn = f1 + f2;  f2 = f1;  f1 = fn; `suspend();`
     611        }
     612}
     613int next( Fib & fib ) with( fib ) {
     614        `resume( fib );`
     615        return ret;
     616}
     617
     618
     619
     620
     621
     622
     623\end{lstlisting}
     624\end{lrbox}
     625\subfloat[3 States, internal variables]{\label{f:Coroutine3States}\usebox\myboxA}
     626\qquad
     627\subfloat[1 State, internal variables]{\label{f:Coroutine1State}\usebox\myboxB}
     628\caption{\CFA Coroutine Fibonacci Implementations}
     629\label{f:fibonacci-cfa}
    447630\end{figure}
    448631
    449 Listing \ref{lst:fmt-line} shows the \code{Format} coroutine for restructuring text into groups of character blocks of fixed size. The example takes advantage of resuming coroutines in the constructor to simplify the code and highlights the idea that interesting control flow can occur in the constructor.
     632Figure~\ref{f:Coroutine3States} creates a @coroutine@ type, which provides communication for multiple interface functions, and the \newterm{coroutine main}, which runs on the coroutine stack.
     633\begin{cfa}
     634`coroutine C { char c; int i; _Bool s; };`      $\C{// used for communication}$
     635void ?{}( C & c ) { s = false; }                        $\C{// constructor}$
     636void main( C & cor ) with( cor ) {                      $\C{// actual coroutine}$
     637        while ( ! s ) // process c
     638        if ( v == ... ) s = false;
     639}
     640// interface functions
     641char cont( C & cor, char ch ) { c = ch; resume( cor ); return c; }
     642_Bool stop( C & cor, int v ) { s = true; i = v; resume( cor ); return s; }
     643\end{cfa}
     644
     645encapsulates the Fibonacci state in the  shows is an example of a solution to the Fibonacci problem using \CFA coroutines, where the coroutine stack holds sufficient state for the next generation.
     646This solution has the advantage of having very strong decoupling between how the sequence is generated and how it is used.
     647Indeed, this version is as easy to use as the @fibonacci_state@ solution, while the implementation is very similar to the @fibonacci_func@ example.
     648
     649Figure~\ref{f:fmt-line} shows the @Format@ coroutine for restructuring text into groups of character blocks of fixed size.
     650The example takes advantage of resuming coroutines in the constructor to simplify the code and highlights the idea that interesting control flow can occur in the constructor.
    450651
    451652\begin{figure}
    452 \begin{cfacode}[tabsize=3,caption={Formatting text into lines of 5 blocks of 4 characters.},label={lst:fmt-line}]
    453 //format characters into blocks of 4 and groups of 5 blocks per line
    454 coroutine Format {
    455         char ch;                                                                        //used for communication
    456         int g, b;                                                               //global because used in destructor
     653\centering
     654\begin{cfa}
     655`coroutine` Format {
     656        char ch;                                                                $\C{// used for communication}$
     657        int g, b;                                                               $\C{// global because used in destructor}$
    457658};
    458 
    459 void  ?{}(Format& fmt) {
    460         resume( fmt );                                                  //prime (start) coroutine
    461 }
    462 
    463 void ^?{}(Format& fmt) with fmt {
    464         if ( fmt.g != 0 || fmt.b != 0 )
    465         sout | endl;
    466 }
    467 
    468 void main(Format& fmt) with fmt {
    469         for ( ;; ) {                                                    //for as many characters
    470                 for(g = 0; g < 5; g++) {                //groups of 5 blocks
    471                         for(b = 0; b < 4; fb++) {       //blocks of 4 characters
    472                                 suspend();
    473                                 sout | ch;                                      //print character
     659void ?{}( Format & fmt ) { `resume( fmt );` } $\C{// prime (start) coroutine}$
     660void ^?{}( Format & fmt ) with( fmt ) { if ( g != 0 || b != 0 ) sout | endl; }
     661void main( Format & fmt ) with( fmt ) {
     662        for ( ;; ) {                                                    $\C{// for as many characters}$
     663                for ( g = 0; g < 5; g += 1 ) {          $\C{// groups of 5 blocks}$
     664                        for ( b = 0; b < 4; b += 1 ) {  $\C{// blocks of 4 characters}$
     665                                `suspend();`
     666                                sout | ch;                                      $\C{// print character}$
    474667                        }
    475                         sout | "  ";                                    //print block separator
     668                        sout | "  ";                                    $\C{// print block separator}$
    476669                }
    477                 sout | endl;                                            //print group separator
     670                sout | endl;                                            $\C{// print group separator}$
    478671        }
    479672}
    480 
    481 void prt(Format & fmt, char ch) {
     673void prt( Format & fmt, char ch ) {
    482674        fmt.ch = ch;
    483         resume(fmt);
    484 }
    485 
     675        `resume( fmt );`
     676}
    486677int main() {
    487678        Format fmt;
    488679        char ch;
    489         Eof: for ( ;; ) {                                               //read until end of file
    490                 sin | ch;                                                       //read one character
    491                 if(eof(sin)) break Eof;                 //eof ?
    492                 prt(fmt, ch);                                           //push character for formatting
     680        for ( ;; ) {                                                    $\C{// read until end of file}$
     681                sin | ch;                                                       $\C{// read one character}$
     682          if ( eof( sin ) ) break;                              $\C{// eof ?}$
     683                prt( fmt, ch );                                         $\C{// push character for formatting}$
    493684        }
    494685}
    495 \end{cfacode}
     686\end{cfa}
     687\caption{Formatting text into lines of 5 blocks of 4 characters.}
     688\label{f:fmt-line}
    496689\end{figure}
    497690
    498 \subsection{Construction}
    499 One important design challenge for implementing coroutines and threads (shown in section \ref{threads}) is that the runtime system needs to run code after the user-constructor runs to connect the fully constructed object into the system. In the case of coroutines, this challenge is simpler since there is no non-determinism from preemption or scheduling. However, the underlying challenge remains the same for coroutines and threads.
    500 
    501 The runtime system needs to create the coroutine's stack and, more importantly, prepare it for the first resumption. The timing of the creation is non-trivial since users expect both to have fully constructed objects once execution enters the coroutine main and to be able to resume the coroutine from the constructor. There are several solutions to this problem but the chosen option effectively forces the design of the coroutine.
    502 
    503 Furthermore, \CFA faces an extra challenge as polymorphic routines create invisible thunks when cast to non-polymorphic routines and these thunks have function scope. For example, the following code, while looking benign, can run into undefined behaviour because of thunks:
    504 
    505 \begin{cfacode}
    506 //async: Runs function asynchronously on another thread
     691\begin{figure}
     692\centering
     693\lstset{language=CFA,escapechar={},moredelim=**[is][\protect\color{red}]{`}{`}}
     694\begin{tabular}{@{}l@{\hspace{2\parindentlnth}}l@{}}
     695\begin{cfa}
     696`coroutine` Prod {
     697        Cons & c;
     698        int N, money, receipt;
     699};
     700void main( Prod & prod ) with( prod ) {
     701        // 1st resume starts here
     702        for ( int i = 0; i < N; i += 1 ) {
     703                int p1 = random( 100 ), p2 = random( 100 );
     704                sout | p1 | " " | p2 | endl;
     705                int status = delivery( c, p1, p2 );
     706                sout | " $" | money | endl | status | endl;
     707                receipt += 1;
     708        }
     709        stop( c );
     710        sout | "prod stops" | endl;
     711}
     712int payment( Prod & prod, int money ) {
     713        prod.money = money;
     714        `resume( prod );`
     715        return prod.receipt;
     716}
     717void start( Prod & prod, int N, Cons &c ) {
     718        &prod.c = &c;
     719        prod.[N, receipt] = [N, 0];
     720        `resume( prod );`
     721}
     722int main() {
     723        Prod prod;
     724        Cons cons = { prod };
     725        srandom( getpid() );
     726        start( prod, 5, cons );
     727}
     728\end{cfa}
     729&
     730\begin{cfa}
     731`coroutine` Cons {
     732        Prod & p;
     733        int p1, p2, status;
     734        _Bool done;
     735};
     736void ?{}( Cons & cons, Prod & p ) {
     737        &cons.p = &p;
     738        cons.[status, done ] = [0, false];
     739}
     740void ^?{}( Cons & cons ) {}
     741void main( Cons & cons ) with( cons ) {
     742        // 1st resume starts here
     743        int money = 1, receipt;
     744        for ( ; ! done; ) {
     745                sout | p1 | " " | p2 | endl | " $" | money | endl;
     746                status += 1;
     747                receipt = payment( p, money );
     748                sout | " #" | receipt | endl;
     749                money += 1;
     750        }
     751        sout | "cons stops" | endl;
     752}
     753int delivery( Cons & cons, int p1, int p2 ) {
     754        cons.[p1, p2] = [p1, p2];
     755        `resume( cons );`
     756        return cons.status;
     757}
     758void stop( Cons & cons ) {
     759        cons.done = true;
     760        `resume( cons );`
     761}
     762
     763\end{cfa}
     764\end{tabular}
     765\caption{Producer / consumer: resume-resume cycle, bi-directional communication}
     766\label{f:ProdCons}
     767\end{figure}
     768
     769
     770\subsubsection{Construction}
     771
     772One important design challenge for implementing coroutines and threads (shown in section \ref{threads}) is that the runtime system needs to run code after the user-constructor runs to connect the fully constructed object into the system.
     773In the case of coroutines, this challenge is simpler since there is no non-determinism from preemption or scheduling.
     774However, the underlying challenge remains the same for coroutines and threads.
     775
     776The runtime system needs to create the coroutine's stack and, more importantly, prepare it for the first resumption.
     777The timing of the creation is non-trivial since users expect both to have fully constructed objects once execution enters the coroutine main and to be able to resume the coroutine from the constructor.
     778There are several solutions to this problem but the chosen option effectively forces the design of the coroutine.
     779
     780Furthermore, \CFA faces an extra challenge as polymorphic routines create invisible thunks when cast to non-polymorphic routines and these thunks have function scope.
     781For example, the following code, while looking benign, can run into undefined behaviour because of thunks:
     782
     783\begin{cfa}
     784// async: Runs function asynchronously on another thread
    507785forall(otype T)
    508786extern void async(void (*func)(T*), T* obj);
     
    513791void bar() {
    514792        int a;
    515         async(noop, &a); //start thread running noop with argument a
    516 }
    517 \end{cfacode}
     793        async(noop, &a); // start thread running noop with argument a
     794}
     795\end{cfa}
    518796
    519797The generated C code\footnote{Code trimmed down for brevity} creates a local thunk to hold type information:
    520798
    521 \begin{ccode}
     799\begin{cfa}
    522800extern void async(/* omitted */, void (*func)(void*), void* obj);
    523801
     
    533811        async(/* omitted */, ((void (*)(void*))(&_thunk0)), (&a));
    534812}
    535 \end{ccode}
    536 The problem in this example is a storage management issue, the function pointer \code{_thunk0} is only valid until the end of the block, which limits the viable solutions because storing the function pointer for too long causes undefined behaviour; i.e., the stack-based thunk being destroyed before it can be used. This challenge is an extension of challenges that come with second-class routines. Indeed, GCC nested routines also have the limitation that nested routine cannot be passed outside of the declaration scope. The case of coroutines and threads is simply an extension of this problem to multiple call stacks.
    537 
    538 \subsection{Alternative: Composition}
     813\end{cfa}
     814The problem in this example is a storage management issue, the function pointer @_thunk0@ is only valid until the end of the block, which limits the viable solutions because storing the function pointer for too long causes undefined behaviour; \ie the stack-based thunk being destroyed before it can be used.
     815This challenge is an extension of challenges that come with second-class routines.
     816Indeed, GCC nested routines also have the limitation that nested routine cannot be passed outside of the declaration scope.
     817The case of coroutines and threads is simply an extension of this problem to multiple call stacks.
     818
     819
     820\subsubsection{Alternative: Composition}
     821
    539822One solution to this challenge is to use composition/containment, where coroutine fields are added to manage the coroutine.
    540823
    541 \begin{cfacode}
     824\begin{cfa}
    542825struct Fibonacci {
    543         int fn; //used for communication
    544         coroutine c; //composition
     826        int fn; // used for communication
     827        coroutine c; // composition
    545828};
    546829
     
    551834void ?{}(Fibonacci& this) {
    552835        this.fn = 0;
    553         //Call constructor to initialize coroutine
     836        // Call constructor to initialize coroutine
    554837        (this.c){myMain};
    555838}
    556 \end{cfacode}
    557 The downside of this approach is that users need to correctly construct the coroutine handle before using it. Like any other objects, the user must carefully choose construction order to prevent usage of objects not yet constructed. However, in the case of coroutines, users must also pass to the coroutine information about the coroutine main, like in the previous example. This opens the door for user errors and requires extra runtime storage to pass at runtime information that can be known statically.
    558 
    559 \subsection{Alternative: Reserved keyword}
     839\end{cfa}
     840The downside of this approach is that users need to correctly construct the coroutine handle before using it.
     841Like any other objects, the user must carefully choose construction order to prevent usage of objects not yet constructed.
     842However, in the case of coroutines, users must also pass to the coroutine information about the coroutine main, like in the previous example.
     843This opens the door for user errors and requires extra runtime storage to pass at runtime information that can be known statically.
     844
     845
     846\subsubsection{Alternative: Reserved keyword}
     847
    560848The next alternative is to use language support to annotate coroutines as follows:
    561 
    562 \begin{cfacode}
     849\begin{cfa}
    563850coroutine Fibonacci {
    564         int fn; //used for communication
     851        int fn; // used for communication
    565852};
    566 \end{cfacode}
    567 The \code{coroutine} keyword means the compiler can find and inject code where needed. The downside of this approach is that it makes coroutine a special case in the language. Users wanting to extend coroutines or build their own for various reasons can only do so in ways offered by the language. Furthermore, implementing coroutines without language supports also displays the power of the programming language used. While this is ultimately the option used for idiomatic \CFA code, coroutines and threads can still be constructed by users without using the language support. The reserved keywords are only present to improve ease of use for the common cases.
    568 
    569 \subsection{Alternative: Lambda Objects}
    570 
    571 For coroutines as for threads, many implementations are based on routine pointers or function objects~\cite{Butenhof97, C++14, MS:VisualC++, BoostCoroutines15}. For example, Boost implements coroutines in terms of four functor object types:
    572 \begin{cfacode}
     853\end{cfa}
     854The @coroutine@ keyword means the compiler can find and inject code where needed.
     855The downside of this approach is that it makes coroutine a special case in the language.
     856Users wanting to extend coroutines or build their own for various reasons can only do so in ways offered by the language.
     857Furthermore, implementing coroutines without language supports also displays the power of the programming language used.
     858While this is ultimately the option used for idiomatic \CFA code, coroutines and threads can still be constructed by users without using the language support.
     859The reserved keywords are only present to improve ease of use for the common cases.
     860
     861
     862\subsubsection{Alternative: Lambda Objects}
     863
     864For coroutines as for threads, many implementations are based on routine pointers or function objects~\cite{Butenhof97, C++14, MS:VisualC++, BoostCoroutines15}.
     865For example, Boost implements coroutines in terms of four functor object types:
     866\begin{cfa}
    573867asymmetric_coroutine<>::pull_type
    574868asymmetric_coroutine<>::push_type
    575869symmetric_coroutine<>::call_type
    576870symmetric_coroutine<>::yield_type
    577 \end{cfacode}
    578 Often, the canonical threading paradigm in languages is based on function pointers, \texttt{pthread} being one of the most well-known examples. The main problem of this approach is that the thread usage is limited to a generic handle that must otherwise be wrapped in a custom type. Since the custom type is simple to write in \CFA and solves several issues, added support for routine/lambda based coroutines adds very little.
    579 
    580 A variation of this would be to use a simple function pointer in the same way \texttt{pthread} does for threads:
    581 \begin{cfacode}
     871\end{cfa}
     872Often, the canonical threading paradigm in languages is based on function pointers, @pthread@ being one of the most well-known examples.
     873The main problem of this approach is that the thread usage is limited to a generic handle that must otherwise be wrapped in a custom type.
     874Since the custom type is simple to write in \CFA and solves several issues, added support for routine/lambda based coroutines adds very little.
     875
     876A variation of this would be to use a simple function pointer in the same way @pthread@ does for threads:
     877\begin{cfa}
    582878void foo( coroutine_t cid, void* arg ) {
    583879        int* value = (int*)arg;
    584         //Coroutine body
     880        // Coroutine body
    585881}
    586882
     
    590886        coroutine_resume( &cid );
    591887}
    592 \end{cfacode}
    593 This semantics is more common for thread interfaces but coroutines work equally well. As discussed in section \ref{threads}, this approach is superseded by static approaches in terms of expressivity.
    594 
    595 \subsection{Alternative: Trait-Based Coroutines}
    596 
    597 Finally, the underlying approach, which is the one closest to \CFA idioms, is to use trait-based lazy coroutines. This approach defines a coroutine as anything that satisfies the trait \code{is_coroutine} (as defined below) and is used as a coroutine.
    598 
    599 \begin{cfacode}
     888\end{cfa}
     889This semantics is more common for thread interfaces but coroutines work equally well.
     890As discussed in section \ref{threads}, this approach is superseded by static approaches in terms of expressivity.
     891
     892
     893\subsubsection{Alternative: Trait-Based Coroutines}
     894
     895Finally, the underlying approach, which is the one closest to \CFA idioms, is to use trait-based lazy coroutines.
     896This approach defines a coroutine as anything that satisfies the trait @is_coroutine@ (as defined below) and is used as a coroutine.
     897
     898\begin{cfa}
    600899trait is_coroutine(dtype T) {
    601900      void main(T& this);
     
    605904forall( dtype T | is_coroutine(T) ) void suspend(T&);
    606905forall( dtype T | is_coroutine(T) ) void resume (T&);
    607 \end{cfacode}
    608 This ensures that an object is not a coroutine until \code{resume} is called on the object. Correspondingly, any object that is passed to \code{resume} is a coroutine since it must satisfy the \code{is_coroutine} trait to compile. The advantage of this approach is that users can easily create different types of coroutines, for example, changing the memory layout of a coroutine is trivial when implementing the \code{get_coroutine} routine. The \CFA keyword \code{coroutine} simply has the effect of implementing the getter and forward declarations required for users to implement the main routine.
     906\end{cfa}
     907This ensures that an object is not a coroutine until @resume@ is called on the object.
     908Correspondingly, any object that is passed to @resume@ is a coroutine since it must satisfy the @is_coroutine@ trait to compile.
     909The advantage of this approach is that users can easily create different types of coroutines, for example, changing the memory layout of a coroutine is trivial when implementing the @get_coroutine@ routine.
     910The \CFA keyword @coroutine@ simply has the effect of implementing the getter and forward declarations required for users to implement the main routine.
    609911
    610912\begin{center}
    611913\begin{tabular}{c c c}
    612 \begin{cfacode}[tabsize=3]
     914\begin{cfa}[tabsize=3]
    613915coroutine MyCoroutine {
    614916        int someValue;
    615917};
    616 \end{cfacode} & == & \begin{cfacode}[tabsize=3]
     918\end{cfa} & == & \begin{cfa}[tabsize=3]
    617919struct MyCoroutine {
    618920        int someValue;
     
    628930
    629931void main(struct MyCoroutine* this);
    630 \end{cfacode}
     932\end{cfa}
    631933\end{tabular}
    632934\end{center}
     
    634936The combination of these two approaches allows users new to coroutining and concurrency to have an easy and concise specification, while more advanced users have tighter control on memory layout and initialization.
    635937
    636 \section{Thread Interface}\label{threads}
    637 The basic building blocks of multithreading in \CFA are \textbf{cfathread}. Both user and kernel threads are supported, where user threads are the concurrency mechanism and kernel threads are the parallel mechanism. User threads offer a flexible and lightweight interface. A thread can be declared using a struct declaration \code{thread} as follows:
    638 
    639 \begin{cfacode}
     938\subsection{Thread Interface}\label{threads}
     939The basic building blocks of multithreading in \CFA are \textbf{cfathread}.
     940Both user and kernel threads are supported, where user threads are the concurrency mechanism and kernel threads are the parallel mechanism.
     941User threads offer a flexible and lightweight interface.
     942A thread can be declared using a struct declaration @thread@ as follows:
     943
     944\begin{cfa}
    640945thread foo {};
    641 \end{cfacode}
     946\end{cfa}
    642947
    643948As for coroutines, the keyword is a thin wrapper around a \CFA trait:
    644949
    645 \begin{cfacode}
     950\begin{cfa}
    646951trait is_thread(dtype T) {
    647952      void ^?{}(T & mutex this);
     
    649954      thread_desc* get_thread(T & this);
    650955};
    651 \end{cfacode}
    652 
    653 Obviously, for this thread implementation to be useful it must run some user code. Several other threading interfaces use a function-pointer representation as the interface of threads (for example \Csharp~\cite{Csharp} and Scala~\cite{Scala}). However, this proposal considers that statically tying a \code{main} routine to a thread supersedes this approach. Since the \code{main} routine is already a special routine in \CFA (where the program begins), it is a natural extension of the semantics to use overloading to declare mains for different threads (the normal main being the main of the initial thread). As such the \code{main} routine of a thread can be defined as
    654 \begin{cfacode}
     956\end{cfa}
     957
     958Obviously, for this thread implementation to be useful it must run some user code.
     959Several other threading interfaces use a function-pointer representation as the interface of threads (for example \Csharp~\cite{Csharp} and Scala~\cite{Scala}).
     960However, this proposal considers that statically tying a @main@ routine to a thread supersedes this approach.
     961Since the @main@ routine is already a special routine in \CFA (where the program begins), it is a natural extension of the semantics to use overloading to declare mains for different threads (the normal main being the main of the initial thread).
     962As such the @main@ routine of a thread can be defined as
     963\begin{cfa}
    655964thread foo {};
    656965
     
    658967        sout | "Hello World!" | endl;
    659968}
    660 \end{cfacode}
    661 
    662 In this example, threads of type \code{foo} start execution in the \code{void main(foo &)} routine, which prints \code{"Hello World!".} While this paper encourages this approach to enforce strongly typed programming, users may prefer to use the routine-based thread semantics for the sake of simplicity. With the static semantics it is trivial to write a thread type that takes a function pointer as a parameter and executes it on its stack asynchronously.
    663 \begin{cfacode}
     969\end{cfa}
     970
     971In this example, threads of type @foo@ start execution in the @void main(foo &)@ routine, which prints @"Hello World!".@ While this paper encourages this approach to enforce strongly typed programming, users may prefer to use the routine-based thread semantics for the sake of simplicity.
     972With the static semantics it is trivial to write a thread type that takes a function pointer as a parameter and executes it on its stack asynchronously.
     973\begin{cfa}
    664974typedef void (*voidFunc)(int);
    665975
     
    675985
    676986void main(FuncRunner & this) {
    677         //thread starts here and runs the function
     987        // thread starts here and runs the function
    678988        this.func( this.arg );
    679989}
     
    687997        return 0?
    688998}
    689 \end{cfacode}
     999\end{cfa}
    6901000
    6911001A consequence of the strongly typed approach to main is that memory layout of parameters and return values to/from a thread are now explicitly specified in the \textbf{api}.
    6921002
    693 Of course, for threads to be useful, it must be possible to start and stop threads and wait for them to complete execution. While using an \textbf{api} such as \code{fork} and \code{join} is relatively common in the literature, such an interface is unnecessary. Indeed, the simplest approach is to use \textbf{raii} principles and have threads \code{fork} after the constructor has completed and \code{join} before the destructor runs.
    694 \begin{cfacode}
     1003Of course, for threads to be useful, it must be possible to start and stop threads and wait for them to complete execution.
     1004While using an \textbf{api} such as @fork@ and @join@ is relatively common in the literature, such an interface is unnecessary.
     1005Indeed, the simplest approach is to use \textbf{raii} principles and have threads @fork@ after the constructor has completed and @join@ before the destructor runs.
     1006\begin{cfa}
    6951007thread World;
    6961008
     
    7011013void main() {
    7021014        World w;
    703         //Thread forks here
    704 
    705         //Printing "Hello " and "World!" are run concurrently
     1015        // Thread forks here
     1016
     1017        // Printing "Hello " and "World!" are run concurrently
    7061018        sout | "Hello " | endl;
    7071019
    708         //Implicit join at end of scope
    709 }
    710 \end{cfacode}
     1020        // Implicit join at end of scope
     1021}
     1022\end{cfa}
    7111023
    7121024This semantic has several advantages over explicit semantics: a thread is always started and stopped exactly once, users cannot make any programming errors, and it naturally scales to multiple threads meaning basic synchronization is very simple.
    7131025
    714 \begin{cfacode}
     1026\begin{cfa}
    7151027thread MyThread {
    7161028        //...
    7171029};
    7181030
    719 //main
     1031// main
    7201032void main(MyThread& this) {
    7211033        //...
     
    7241036void foo() {
    7251037        MyThread thrds[10];
    726         //Start 10 threads at the beginning of the scope
     1038        // Start 10 threads at the beginning of the scope
    7271039
    7281040        DoStuff();
    7291041
    730         //Wait for the 10 threads to finish
    731 }
    732 \end{cfacode}
    733 
    734 However, one of the drawbacks of this approach is that threads always form a tree where nodes must always outlive their children, i.e., they are always destroyed in the opposite order of construction because of C scoping rules. This restriction is relaxed by using dynamic allocation, so threads can outlive the scope in which they are created, much like dynamically allocating memory lets objects outlive the scope in which they are created.
    735 
    736 \begin{cfacode}
     1042        // Wait for the 10 threads to finish
     1043}
     1044\end{cfa}
     1045
     1046However, one of the drawbacks of this approach is that threads always form a tree where nodes must always outlive their children, \ie they are always destroyed in the opposite order of construction because of C scoping rules.
     1047This restriction is relaxed by using dynamic allocation, so threads can outlive the scope in which they are created, much like dynamically allocating memory lets objects outlive the scope in which they are created.
     1048
     1049\begin{cfa}
    7371050thread MyThread {
    7381051        //...
     
    7461059        MyThread* long_lived;
    7471060        {
    748                 //Start a thread at the beginning of the scope
     1061                // Start a thread at the beginning of the scope
    7491062                MyThread short_lived;
    7501063
    751                 //create another thread that will outlive the thread in this scope
     1064                // create another thread that will outlive the thread in this scope
    7521065                long_lived = new MyThread;
    7531066
    7541067                DoStuff();
    7551068
    756                 //Wait for the thread short_lived to finish
     1069                // Wait for the thread short_lived to finish
    7571070        }
    7581071        DoMoreStuff();
    7591072
    760         //Now wait for the long_lived to finish
     1073        // Now wait for the long_lived to finish
    7611074        delete long_lived;
    7621075}
    763 \end{cfacode}
     1076\end{cfa}
    7641077
    7651078
     
    7691082% ======================================================================
    7701083% ======================================================================
    771 Several tools can be used to solve concurrency challenges. Since many of these challenges appear with the use of mutable shared state, some languages and libraries simply disallow mutable shared state (Erlang~\cite{Erlang}, Haskell~\cite{Haskell}, Akka (Scala)~\cite{Akka}). In these paradigms, interaction among concurrent objects relies on message passing~\cite{Thoth,Harmony,V-Kernel} or other paradigms closely relate to networking concepts (channels~\cite{CSP,Go} for example). However, in languages that use routine calls as their core abstraction mechanism, these approaches force a clear distinction between concurrent and non-concurrent paradigms (i.e., message passing versus routine calls). This distinction in turn means that, in order to be effective, programmers need to learn two sets of design patterns. While this distinction can be hidden away in library code, effective use of the library still has to take both paradigms into account.
    772 
    773 Approaches based on shared memory are more closely related to non-concurrent paradigms since they often rely on basic constructs like routine calls and shared objects. At the lowest level, concurrent paradigms are implemented as atomic operations and locks. Many such mechanisms have been proposed, including semaphores~\cite{Dijkstra68b} and path expressions~\cite{Campbell74}. However, for productivity reasons it is desirable to have a higher-level construct be the core concurrency paradigm~\cite{HPP:Study}.
    774 
    775 An approach that is worth mentioning because it is gaining in popularity is transactional memory~\cite{Herlihy93}. While this approach is even pursued by system languages like \CC~\cite{Cpp-Transactions}, the performance and feature set is currently too restrictive to be the main concurrency paradigm for system languages, which is why it was rejected as the core paradigm for concurrency in \CFA.
    776 
    777 One of the most natural, elegant, and efficient mechanisms for synchronization and communication, especially for shared-memory systems, is the \emph{monitor}. Monitors were first proposed by Brinch Hansen~\cite{Hansen73} and later described and extended by C.A.R.~Hoare~\cite{Hoare74}. Many programming languages---e.g., Concurrent Pascal~\cite{ConcurrentPascal}, Mesa~\cite{Mesa}, Modula~\cite{Modula-2}, Turing~\cite{Turing:old}, Modula-3~\cite{Modula-3}, NeWS~\cite{NeWS}, Emerald~\cite{Emerald}, \uC~\cite{Buhr92a} and Java~\cite{Java}---provide monitors as explicit language constructs. In addition, operating-system kernels and device drivers have a monitor-like structure, although they often use lower-level primitives such as semaphores or locks to simulate monitors. For these reasons, this project proposes monitors as the core concurrency construct.
    778 
    779 \section{Basics}
    780 Non-determinism requires concurrent systems to offer support for mutual-exclusion and synchronization. Mutual-exclusion is the concept that only a fixed number of threads can access a critical section at any given time, where a critical section is a group of instructions on an associated portion of data that requires the restricted access. On the other hand, synchronization enforces relative ordering of execution and synchronization tools provide numerous mechanisms to establish timing relationships among threads.
    781 
    782 \subsection{Mutual-Exclusion}
    783 As mentioned above, mutual-exclusion is the guarantee that only a fix number of threads can enter a critical section at once. However, many solutions exist for mutual exclusion, which vary in terms of performance, flexibility and ease of use. Methods range from low-level locks, which are fast and flexible but require significant attention to be correct, to  higher-level concurrency techniques, which sacrifice some performance in order to improve ease of use. Ease of use comes by either guaranteeing some problems cannot occur (e.g., being deadlock free) or by offering a more explicit coupling between data and corresponding critical section. For example, the \CC \code{std::atomic<T>} offers an easy way to express mutual-exclusion on a restricted set of operations (e.g., reading/writing large types atomically). Another challenge with low-level locks is composability. Locks have restricted composability because it takes careful organizing for multiple locks to be used while preventing deadlocks. Easing composability is another feature higher-level mutual-exclusion mechanisms often offer.
    784 
    785 \subsection{Synchronization}
    786 As with mutual-exclusion, low-level synchronization primitives often offer good performance and good flexibility at the cost of ease of use. Again, higher-level mechanisms often simplify usage by adding either better coupling between synchronization and data (e.g., message passing) or offering a simpler solution to otherwise involved challenges. As mentioned above, synchronization can be expressed as guaranteeing that event \textit{X} always happens before \textit{Y}. Most of the time, synchronization happens within a critical section, where threads must acquire mutual-exclusion in a certain order. However, it may also be desirable to guarantee that event \textit{Z} does not occur between \textit{X} and \textit{Y}. Not satisfying this property is called \textbf{barging}. For example, where event \textit{X} tries to effect event \textit{Y} but another thread acquires the critical section and emits \textit{Z} before \textit{Y}. The classic example is the thread that finishes using a resource and unblocks a thread waiting to use the resource, but the unblocked thread must compete to acquire the resource. Preventing or detecting barging is an involved challenge with low-level locks, which can be made much easier by higher-level constructs. This challenge is often split into two different methods, barging avoidance and barging prevention. Algorithms that use flag variables to detect barging threads are said to be using barging avoidance, while algorithms that baton-pass locks~\cite{Andrews89} between threads instead of releasing the locks are said to be using barging prevention.
     1084Several tools can be used to solve concurrency challenges.
     1085Since many of these challenges appear with the use of mutable shared state, some languages and libraries simply disallow mutable shared state (Erlang~\cite{Erlang}, Haskell~\cite{Haskell}, Akka (Scala)~\cite{Akka}).
     1086In these paradigms, interaction among concurrent objects relies on message passing~\cite{Thoth,Harmony,V-Kernel} or other paradigms closely relate to networking concepts (channels~\cite{CSP,Go} for example).
     1087However, in languages that use routine calls as their core abstraction mechanism, these approaches force a clear distinction between concurrent and non-concurrent paradigms (\ie message passing versus routine calls).
     1088This distinction in turn means that, in order to be effective, programmers need to learn two sets of design patterns.
     1089While this distinction can be hidden away in library code, effective use of the library still has to take both paradigms into account.
     1090
     1091Approaches based on shared memory are more closely related to non-concurrent paradigms since they often rely on basic constructs like routine calls and shared objects.
     1092At the lowest level, concurrent paradigms are implemented as atomic operations and locks.
     1093Many such mechanisms have been proposed, including semaphores~\cite{Dijkstra68b} and path expressions~\cite{Campbell74}.
     1094However, for productivity reasons it is desirable to have a higher-level construct be the core concurrency paradigm~\cite{Hochstein05}.
     1095
     1096An approach that is worth mentioning because it is gaining in popularity is transactional memory~\cite{Herlihy93}.
     1097While this approach is even pursued by system languages like \CC~\cite{Cpp-Transactions}, the performance and feature set is currently too restrictive to be the main concurrency paradigm for system languages, which is why it was rejected as the core paradigm for concurrency in \CFA.
     1098
     1099One of the most natural, elegant, and efficient mechanisms for synchronization and communication, especially for shared-memory systems, is the \emph{monitor}.
     1100Monitors were first proposed by Brinch Hansen~\cite{Hansen73} and later described and extended by C.A.R.~Hoare~\cite{Hoare74}.
     1101Many programming languages---\eg Concurrent Pascal~\cite{ConcurrentPascal}, Mesa~\cite{Mesa}, Modula~\cite{Modula-2}, Turing~\cite{Turing:old}, Modula-3~\cite{Modula-3}, NeWS~\cite{NeWS}, Emerald~\cite{Emerald}, \uC~\cite{Buhr92a} and Java~\cite{Java}---provide monitors as explicit language constructs.
     1102In addition, operating-system kernels and device drivers have a monitor-like structure, although they often use lower-level primitives such as semaphores or locks to simulate monitors.
     1103For these reasons, this project proposes monitors as the core concurrency construct.
     1104
     1105
     1106\subsection{Basics}
     1107
     1108Non-determinism requires concurrent systems to offer support for mutual-exclusion and synchronization.
     1109Mutual-exclusion is the concept that only a fixed number of threads can access a critical section at any given time, where a critical section is a group of instructions on an associated portion of data that requires the restricted access.
     1110On the other hand, synchronization enforces relative ordering of execution and synchronization tools provide numerous mechanisms to establish timing relationships among threads.
     1111
     1112
     1113\subsubsection{Mutual-Exclusion}
     1114
     1115As mentioned above, mutual-exclusion is the guarantee that only a fix number of threads can enter a critical section at once.
     1116However, many solutions exist for mutual exclusion, which vary in terms of performance, flexibility and ease of use.
     1117Methods range from low-level locks, which are fast and flexible but require significant attention to be correct, to  higher-level concurrency techniques, which sacrifice some performance in order to improve ease of use.
     1118Ease of use comes by either guaranteeing some problems cannot occur (\eg being deadlock free) or by offering a more explicit coupling between data and corresponding critical section.
     1119For example, the \CC @std::atomic<T>@ offers an easy way to express mutual-exclusion on a restricted set of operations (\eg reading/writing large types atomically).
     1120Another challenge with low-level locks is composability.
     1121Locks have restricted composability because it takes careful organizing for multiple locks to be used while preventing deadlocks.
     1122Easing composability is another feature higher-level mutual-exclusion mechanisms often offer.
     1123
     1124
     1125\subsubsection{Synchronization}
     1126
     1127As with mutual-exclusion, low-level synchronization primitives often offer good performance and good flexibility at the cost of ease of use.
     1128Again, higher-level mechanisms often simplify usage by adding either better coupling between synchronization and data (\eg message passing) or offering a simpler solution to otherwise involved challenges.
     1129As mentioned above, synchronization can be expressed as guaranteeing that event \textit{X} always happens before \textit{Y}.
     1130Most of the time, synchronization happens within a critical section, where threads must acquire mutual-exclusion in a certain order.
     1131However, it may also be desirable to guarantee that event \textit{Z} does not occur between \textit{X} and \textit{Y}.
     1132Not satisfying this property is called \textbf{barging}.
     1133For example, where event \textit{X} tries to effect event \textit{Y} but another thread acquires the critical section and emits \textit{Z} before \textit{Y}.
     1134The classic example is the thread that finishes using a resource and unblocks a thread waiting to use the resource, but the unblocked thread must compete to acquire the resource.
     1135Preventing or detecting barging is an involved challenge with low-level locks, which can be made much easier by higher-level constructs.
     1136This challenge is often split into two different methods, barging avoidance and barging prevention.
     1137Algorithms that use flag variables to detect barging threads are said to be using barging avoidance, while algorithms that baton-pass locks~\cite{Andrews89} between threads instead of releasing the locks are said to be using barging prevention.
     1138
    7871139
    7881140% ======================================================================
     
    7911143% ======================================================================
    7921144% ======================================================================
    793 A \textbf{monitor} is a set of routines that ensure mutual-exclusion when accessing shared state. More precisely, a monitor is a programming technique that associates mutual-exclusion to routine scopes, as opposed to mutex locks, where mutual-exclusion is defined by lock/release calls independently of any scoping of the calling routine. This strong association eases readability and maintainability, at the cost of flexibility. Note that both monitors and mutex locks, require an abstract handle to identify them. This concept is generally associated with object-oriented languages like Java~\cite{Java} or \uC~\cite{uC++book} but does not strictly require OO semantics. The only requirement is the ability to declare a handle to a shared object and a set of routines that act on it:
    794 \begin{cfacode}
     1145A \textbf{monitor} is a set of routines that ensure mutual-exclusion when accessing shared state.
     1146More precisely, a monitor is a programming technique that associates mutual-exclusion to routine scopes, as opposed to mutex locks, where mutual-exclusion is defined by lock/release calls independently of any scoping of the calling routine.
     1147This strong association eases readability and maintainability, at the cost of flexibility.
     1148Note that both monitors and mutex locks, require an abstract handle to identify them.
     1149This concept is generally associated with object-oriented languages like Java~\cite{Java} or \uC~\cite{uC++book} but does not strictly require OO semantics.
     1150The only requirement is the ability to declare a handle to a shared object and a set of routines that act on it:
     1151\begin{cfa}
    7951152typedef /*some monitor type*/ monitor;
    7961153int f(monitor & m);
    7971154
    7981155int main() {
    799         monitor m;  //Handle m
    800         f(m);       //Routine using handle
    801 }
    802 \end{cfacode}
     1156        monitor m;  // Handle m
     1157        f(m);       // Routine using handle
     1158}
     1159\end{cfa}
    8031160
    8041161% ======================================================================
     
    8071164% ======================================================================
    8081165% ======================================================================
    809 The above monitor example displays some of the intrinsic characteristics. First, it is necessary to use pass-by-reference over pass-by-value for monitor routines. This semantics is important, because at their core, monitors are implicit mutual-exclusion objects (locks), and these objects cannot be copied. Therefore, monitors are non-copy-able objects (\code{dtype}).
    810 
    811 Another aspect to consider is when a monitor acquires its mutual exclusion. For example, a monitor may need to be passed through multiple helper routines that do not acquire the monitor mutual-exclusion on entry. Passthrough can occur for generic helper routines (\code{swap}, \code{sort}, etc.) or specific helper routines like the following to implement an atomic counter:
    812 
    813 \begin{cfacode}
     1166The above monitor example displays some of the intrinsic characteristics.
     1167First, it is necessary to use pass-by-reference over pass-by-value for monitor routines.
     1168This semantics is important, because at their core, monitors are implicit mutual-exclusion objects (locks), and these objects cannot be copied.
     1169Therefore, monitors are non-copy-able objects (@dtype@).
     1170
     1171Another aspect to consider is when a monitor acquires its mutual exclusion.
     1172For example, a monitor may need to be passed through multiple helper routines that do not acquire the monitor mutual-exclusion on entry.
     1173Passthrough can occur for generic helper routines (@swap@, @sort@, \etc) or specific helper routines like the following to implement an atomic counter:
     1174
     1175\begin{cfa}
    8141176monitor counter_t { /*...see section $\ref{data}$...*/ };
    8151177
    816 void ?{}(counter_t & nomutex this); //constructor
    817 size_t ++?(counter_t & mutex this); //increment
    818 
    819 //need for mutex is platform dependent
    820 void ?{}(size_t * this, counter_t & mutex cnt); //conversion
    821 \end{cfacode}
     1178void ?{}(counter_t & nomutex this); // constructor
     1179size_t ++?(counter_t & mutex this); // increment
     1180
     1181// need for mutex is platform dependent
     1182void ?{}(size_t * this, counter_t & mutex cnt); // conversion
     1183\end{cfa}
    8221184This counter is used as follows:
    8231185\begin{center}
    8241186\begin{tabular}{c @{\hskip 0.35in} c @{\hskip 0.35in} c}
    825 \begin{cfacode}
    826 //shared counter
     1187\begin{cfa}
     1188// shared counter
    8271189counter_t cnt1, cnt2;
    8281190
    829 //multiple threads access counter
     1191// multiple threads access counter
    8301192thread 1 : cnt1++; cnt2++;
    8311193thread 2 : cnt1++; cnt2++;
     
    8331195        ...
    8341196thread N : cnt1++; cnt2++;
    835 \end{cfacode}
     1197\end{cfa}
    8361198\end{tabular}
    8371199\end{center}
    838 Notice how the counter is used without any explicit synchronization and yet supports thread-safe semantics for both reading and writing, which is similar in usage to the \CC template \code{std::atomic}.
    839 
    840 Here, the constructor (\code{?\{\}}) uses the \code{nomutex} keyword to signify that it does not acquire the monitor mutual-exclusion when constructing. This semantics is because an object not yet con\-structed should never be shared and therefore does not require mutual exclusion. Furthermore, it allows the implementation greater freedom when it initializes the monitor locking. The prefix increment operator uses \code{mutex} to protect the incrementing process from race conditions. Finally, there is a conversion operator from \code{counter_t} to \code{size_t}. This conversion may or may not require the \code{mutex} keyword depending on whether or not reading a \code{size_t} is an atomic operation.
    841 
    842 For maximum usability, monitors use \textbf{multi-acq} semantics, which means a single thread can acquire the same monitor multiple times without deadlock. For example, listing \ref{fig:search} uses recursion and \textbf{multi-acq} to print values inside a binary tree.
     1200Notice how the counter is used without any explicit synchronization and yet supports thread-safe semantics for both reading and writing, which is similar in usage to the \CC template @std::atomic@.
     1201
     1202Here, the constructor (@?{}@) uses the @nomutex@ keyword to signify that it does not acquire the monitor mutual-exclusion when constructing.
     1203This semantics is because an object not yet constructed should never be shared and therefore does not require mutual exclusion.
     1204Furthermore, it allows the implementation greater freedom when it initializes the monitor locking.
     1205The prefix increment operator uses @mutex@ to protect the incrementing process from race conditions.
     1206Finally, there is a conversion operator from @counter_t@ to @size_t@.
     1207This conversion may or may not require the @mutex@ keyword depending on whether or not reading a @size_t@ is an atomic operation.
     1208
     1209For maximum usability, monitors use \textbf{multi-acq} semantics, which means a single thread can acquire the same monitor multiple times without deadlock.
     1210For example, listing \ref{fig:search} uses recursion and \textbf{multi-acq} to print values inside a binary tree.
    8431211\begin{figure}
    844 \begin{cfacode}[caption={Recursive printing algorithm using \textbf{multi-acq}.},label={fig:search}]
     1212\begin{cfa}[caption={Recursive printing algorithm using \textbf{multi-acq}.},label={fig:search}]
    8451213monitor printer { ... };
    8461214struct tree {
     
    8551223        print(p, t->right);
    8561224}
    857 \end{cfacode}
     1225\end{cfa}
    8581226\end{figure}
    8591227
    860 Having both \code{mutex} and \code{nomutex} keywords can be redundant, depending on the meaning of a routine having neither of these keywords. For example, it is reasonable that it should default to the safest option (\code{mutex}) when given a routine without qualifiers \code{void foo(counter_t & this)}, whereas assuming \code{nomutex} is unsafe and may cause subtle errors. On the other hand, \code{nomutex} is the ``normal'' parameter behaviour, it effectively states explicitly that ``this routine is not special''. Another alternative is making exactly one of these keywords mandatory, which provides the same semantics but without the ambiguity of supporting routines with neither keyword. Mandatory keywords would also have the added benefit of being self-documented but at the cost of extra typing. While there are several benefits to mandatory keywords, they do bring a few challenges. Mandatory keywords in \CFA would imply that the compiler must know without doubt whether or not a parameter is a monitor or not. Since \CFA relies heavily on traits as an abstraction mechanism, the distinction between a type that is a monitor and a type that looks like a monitor can become blurred. For this reason, \CFA only has the \code{mutex} keyword and uses no keyword to mean \code{nomutex}.
    861 
    862 The next semantic decision is to establish when \code{mutex} may be used as a type qualifier. Consider the following declarations:
    863 \begin{cfacode}
     1228Having both @mutex@ and @nomutex@ keywords can be redundant, depending on the meaning of a routine having neither of these keywords.
     1229For example, it is reasonable that it should default to the safest option (@mutex@) when given a routine without qualifiers @void foo(counter_t & this)@, whereas assuming @nomutex@ is unsafe and may cause subtle errors.
     1230On the other hand, @nomutex@ is the ``normal'' parameter behaviour, it effectively states explicitly that ``this routine is not special''.
     1231Another alternative is making exactly one of these keywords mandatory, which provides the same semantics but without the ambiguity of supporting routines with neither keyword.
     1232Mandatory keywords would also have the added benefit of being self-documented but at the cost of extra typing.
     1233While there are several benefits to mandatory keywords, they do bring a few challenges.
     1234Mandatory keywords in \CFA would imply that the compiler must know without doubt whether or not a parameter is a monitor or not.
     1235Since \CFA relies heavily on traits as an abstraction mechanism, the distinction between a type that is a monitor and a type that looks like a monitor can become blurred.
     1236For this reason, \CFA only has the @mutex@ keyword and uses no keyword to mean @nomutex@.
     1237
     1238The next semantic decision is to establish when @mutex@ may be used as a type qualifier.
     1239Consider the following declarations:
     1240\begin{cfa}
    8641241int f1(monitor & mutex m);
    8651242int f2(const monitor & mutex m);
     
    8671244int f4(monitor * mutex m []);
    8681245int f5(graph(monitor *) & mutex m);
    869 \end{cfacode}
    870 The problem is to identify which object(s) should be acquired. Furthermore, each object needs to be acquired only once. In the case of simple routines like \code{f1} and \code{f2} it is easy to identify an exhaustive list of objects to acquire on entry. Adding indirections (\code{f3}) still allows the compiler and programmer to identify which object is acquired. However, adding in arrays (\code{f4}) makes it much harder. Array lengths are not necessarily known in C, and even then, making sure objects are only acquired once becomes none-trivial. This problem can be extended to absurd limits like \code{f5}, which uses a graph of monitors. To make the issue tractable, this project imposes the requirement that a routine may only acquire one monitor per parameter and it must be the type of the parameter with at most one level of indirection (ignoring potential qualifiers). Also note that while routine \code{f3} can be supported, meaning that monitor \code{**m} is acquired, passing an array to this routine would be type-safe and yet result in undefined behaviour because only the first element of the array is acquired. However, this ambiguity is part of the C type-system with respects to arrays. For this reason, \code{mutex} is disallowed in the context where arrays may be passed:
    871 \begin{cfacode}
    872 int f1(monitor & mutex m);    //Okay : recommended case
    873 int f2(monitor * mutex m);    //Not Okay : Could be an array
    874 int f3(monitor mutex m []);  //Not Okay : Array of unknown length
    875 int f4(monitor ** mutex m);   //Not Okay : Could be an array
    876 int f5(monitor * mutex m []); //Not Okay : Array of unknown length
    877 \end{cfacode}
    878 Note that not all array functions are actually distinct in the type system. However, even if the code generation could tell the difference, the extra information is still not sufficient to extend meaningfully the monitor call semantic.
    879 
    880 Unlike object-oriented monitors, where calling a mutex member \emph{implicitly} acquires mutual-exclusion of the receiver object, \CFA uses an explicit mechanism to specify the object that acquires mutual-exclusion. A consequence of this approach is that it extends naturally to multi-monitor calls.
    881 \begin{cfacode}
     1246\end{cfa}
     1247The problem is to identify which object(s) should be acquired.
     1248Furthermore, each object needs to be acquired only once.
     1249In the case of simple routines like @f1@ and @f2@ it is easy to identify an exhaustive list of objects to acquire on entry.
     1250Adding indirections (@f3@) still allows the compiler and programmer to identify which object is acquired.
     1251However, adding in arrays (@f4@) makes it much harder.
     1252Array lengths are not necessarily known in C, and even then, making sure objects are only acquired once becomes none-trivial.
     1253This problem can be extended to absurd limits like @f5@, which uses a graph of monitors.
     1254To make the issue tractable, this project imposes the requirement that a routine may only acquire one monitor per parameter and it must be the type of the parameter with at most one level of indirection (ignoring potential qualifiers).
     1255Also note that while routine @f3@ can be supported, meaning that monitor @**m@ is acquired, passing an array to this routine would be type-safe and yet result in undefined behaviour because only the first element of the array is acquired.
     1256However, this ambiguity is part of the C type-system with respects to arrays.
     1257For this reason, @mutex@ is disallowed in the context where arrays may be passed:
     1258\begin{cfa}
     1259int f1(monitor & mutex m);    // Okay : recommended case
     1260int f2(monitor * mutex m);    // Not Okay : Could be an array
     1261int f3(monitor mutex m []);  // Not Okay : Array of unknown length
     1262int f4(monitor ** mutex m);   // Not Okay : Could be an array
     1263int f5(monitor * mutex m []); // Not Okay : Array of unknown length
     1264\end{cfa}
     1265Note that not all array functions are actually distinct in the type system.
     1266However, even if the code generation could tell the difference, the extra information is still not sufficient to extend meaningfully the monitor call semantic.
     1267
     1268Unlike object-oriented monitors, where calling a mutex member \emph{implicitly} acquires mutual-exclusion of the receiver object, \CFA uses an explicit mechanism to specify the object that acquires mutual-exclusion.
     1269A consequence of this approach is that it extends naturally to multi-monitor calls.
     1270\begin{cfa}
    8821271int f(MonitorA & mutex a, MonitorB & mutex b);
    8831272
     
    8851274MonitorB b;
    8861275f(a,b);
    887 \end{cfacode}
    888 While OO monitors could be extended with a mutex qualifier for multiple-monitor calls, no example of this feature could be found. The capability to acquire multiple locks before entering a critical section is called \emph{\textbf{bulk-acq}}. In practice, writing multi-locking routines that do not lead to deadlocks is tricky. Having language support for such a feature is therefore a significant asset for \CFA. In the case presented above, \CFA guarantees that the order of acquisition is consistent across calls to different routines using the same monitors as arguments. This consistent ordering means acquiring multiple monitors is safe from deadlock when using \textbf{bulk-acq}. However, users can still force the acquiring order. For example, notice which routines use \code{mutex}/\code{nomutex} and how this affects acquiring order:
    889 \begin{cfacode}
    890 void foo(A& mutex a, B& mutex b) { //acquire a & b
     1276\end{cfa}
     1277While OO monitors could be extended with a mutex qualifier for multiple-monitor calls, no example of this feature could be found.
     1278The capability to acquire multiple locks before entering a critical section is called \emph{\textbf{bulk-acq}}.
     1279In practice, writing multi-locking routines that do not lead to deadlocks is tricky.
     1280Having language support for such a feature is therefore a significant asset for \CFA.
     1281In the case presented above, \CFA guarantees that the order of acquisition is consistent across calls to different routines using the same monitors as arguments.
     1282This consistent ordering means acquiring multiple monitors is safe from deadlock when using \textbf{bulk-acq}.
     1283However, users can still force the acquiring order.
     1284For example, notice which routines use @mutex@/@nomutex@ and how this affects acquiring order:
     1285\begin{cfa}
     1286void foo(A& mutex a, B& mutex b) { // acquire a & b
    8911287        ...
    8921288}
    8931289
    894 void bar(A& mutex a, B& /*nomutex*/ b) { //acquire a
    895         ... foo(a, b); ... //acquire b
    896 }
    897 
    898 void baz(A& /*nomutex*/ a, B& mutex b) { //acquire b
    899         ... foo(a, b); ... //acquire a
    900 }
    901 \end{cfacode}
    902 The \textbf{multi-acq} monitor lock allows a monitor lock to be acquired by both \code{bar} or \code{baz} and acquired again in \code{foo}. In the calls to \code{bar} and \code{baz} the monitors are acquired in opposite order.
    903 
    904 However, such use leads to lock acquiring order problems. In the example above, the user uses implicit ordering in the case of function \code{foo} but explicit ordering in the case of \code{bar} and \code{baz}. This subtle difference means that calling these routines concurrently may lead to deadlock and is therefore undefined behaviour. As shown~\cite{Lister77}, solving this problem requires:
     1290void bar(A& mutex a, B& /*nomutex*/ b) { // acquire a
     1291        ... foo(a, b); ... // acquire b
     1292}
     1293
     1294void baz(A& /*nomutex*/ a, B& mutex b) { // acquire b
     1295        ... foo(a, b); ... // acquire a
     1296}
     1297\end{cfa}
     1298The \textbf{multi-acq} monitor lock allows a monitor lock to be acquired by both @bar@ or @baz@ and acquired again in @foo@.
     1299In the calls to @bar@ and @baz@ the monitors are acquired in opposite order.
     1300
     1301However, such use leads to lock acquiring order problems.
     1302In the example above, the user uses implicit ordering in the case of function @foo@ but explicit ordering in the case of @bar@ and @baz@.
     1303This subtle difference means that calling these routines concurrently may lead to deadlock and is therefore undefined behaviour.
     1304As shown~\cite{Lister77}, solving this problem requires:
    9051305\begin{enumerate}
    9061306        \item Dynamically tracking the monitor-call order.
    9071307        \item Implement rollback semantics.
    9081308\end{enumerate}
    909 While the first requirement is already a significant constraint on the system, implementing a general rollback semantics in a C-like language is still prohibitively complex~\cite{Dice10}. In \CFA, users simply need to be careful when acquiring multiple monitors at the same time or only use \textbf{bulk-acq} of all the monitors. While \CFA provides only a partial solution, most systems provide no solution and the \CFA partial solution handles many useful cases.
     1309While the first requirement is already a significant constraint on the system, implementing a general rollback semantics in a C-like language is still prohibitively complex~\cite{Dice10}.
     1310In \CFA, users simply need to be careful when acquiring multiple monitors at the same time or only use \textbf{bulk-acq} of all the monitors.
     1311While \CFA provides only a partial solution, most systems provide no solution and the \CFA partial solution handles many useful cases.
    9101312
    9111313For example, \textbf{multi-acq} and \textbf{bulk-acq} can be used together in interesting ways:
    912 \begin{cfacode}
     1314\begin{cfa}
    9131315monitor bank { ... };
    9141316
     
    9191321        deposit( yourbank, me2you );
    9201322}
    921 \end{cfacode}
    922 This example shows a trivial solution to the bank-account transfer problem~\cite{BankTransfer}. Without \textbf{multi-acq} and \textbf{bulk-acq}, the solution to this problem is much more involved and requires careful engineering.
    923 
    924 \subsection{\code{mutex} statement} \label{mutex-stmt}
    925 
    926 The call semantics discussed above have one software engineering issue: only a routine can acquire the mutual-exclusion of a set of monitor. \CFA offers the \code{mutex} statement to work around the need for unnecessary names, avoiding a major software engineering problem~\cite{2FTwoHardThings}. Table \ref{lst:mutex-stmt} shows an example of the \code{mutex} statement, which introduces a new scope in which the mutual-exclusion of a set of monitor is acquired. Beyond naming, the \code{mutex} statement has no semantic difference from a routine call with \code{mutex} parameters.
     1323\end{cfa}
     1324This example shows a trivial solution to the bank-account transfer problem~\cite{BankTransfer}.
     1325Without \textbf{multi-acq} and \textbf{bulk-acq}, the solution to this problem is much more involved and requires careful engineering.
     1326
     1327
     1328\subsection{\protect\lstinline|mutex| statement} \label{mutex-stmt}
     1329
     1330The call semantics discussed above have one software engineering issue: only a routine can acquire the mutual-exclusion of a set of monitor. \CFA offers the @mutex@ statement to work around the need for unnecessary names, avoiding a major software engineering problem~\cite{2FTwoHardThings}.
     1331Table \ref{f:mutex-stmt} shows an example of the @mutex@ statement, which introduces a new scope in which the mutual-exclusion of a set of monitor is acquired.
     1332Beyond naming, the @mutex@ statement has no semantic difference from a routine call with @mutex@ parameters.
    9271333
    9281334\begin{table}
    9291335\begin{center}
    9301336\begin{tabular}{|c|c|}
    931 function call & \code{mutex} statement \\
     1337function call & @mutex@ statement \\
    9321338\hline
    933 \begin{cfacode}[tabsize=3]
     1339\begin{cfa}[tabsize=3]
    9341340monitor M {};
    9351341void foo( M & mutex m1, M & mutex m2 ) {
    936         //critical section
     1342        // critical section
    9371343}
    9381344
     
    9401346        foo( m1, m2 );
    9411347}
    942 \end{cfacode}&\begin{cfacode}[tabsize=3]
     1348\end{cfa}&\begin{cfa}[tabsize=3]
    9431349monitor M {};
    9441350void bar( M & m1, M & m2 ) {
    9451351        mutex(m1, m2) {
    946                 //critical section
     1352                // critical section
    9471353        }
    9481354}
    9491355
    9501356
    951 \end{cfacode}
     1357\end{cfa}
    9521358\end{tabular}
    9531359\end{center}
    954 \caption{Regular call semantics vs. \code{mutex} statement}
    955 \label{lst:mutex-stmt}
     1360\caption{Regular call semantics vs. \protect\lstinline|mutex| statement}
     1361\label{f:mutex-stmt}
    9561362\end{table}
    9571363
     
    9611367% ======================================================================
    9621368% ======================================================================
    963 Once the call semantics are established, the next step is to establish data semantics. Indeed, until now a monitor is used simply as a generic handle but in most cases monitors contain shared data. This data should be intrinsic to the monitor declaration to prevent any accidental use of data without its appropriate protection. For example, here is a complete version of the counter shown in section \ref{call}:
    964 \begin{cfacode}
     1369Once the call semantics are established, the next step is to establish data semantics.
     1370Indeed, until now a monitor is used simply as a generic handle but in most cases monitors contain shared data.
     1371This data should be intrinsic to the monitor declaration to prevent any accidental use of data without its appropriate protection.
     1372For example, here is a complete version of the counter shown in section \ref{call}:
     1373\begin{cfa}
    9651374monitor counter_t {
    9661375        int value;
     
    9751384}
    9761385
    977 //need for mutex is platform dependent here
     1386// need for mutex is platform dependent here
    9781387void ?{}(int * this, counter_t & mutex cnt) {
    9791388        *this = (int)cnt;
    9801389}
    981 \end{cfacode}
    982 
    983 Like threads and coroutines, monitors are defined in terms of traits with some additional language support in the form of the \code{monitor} keyword. The monitor trait is:
    984 \begin{cfacode}
     1390\end{cfa}
     1391
     1392Like threads and coroutines, monitors are defined in terms of traits with some additional language support in the form of the @monitor@ keyword.
     1393The monitor trait is:
     1394\begin{cfa}
    9851395trait is_monitor(dtype T) {
    9861396        monitor_desc * get_monitor( T & );
    9871397        void ^?{}( T & mutex );
    9881398};
    989 \end{cfacode}
    990 Note that the destructor of a monitor must be a \code{mutex} routine to prevent deallocation while a thread is accessing the monitor. As with any object, calls to a monitor, using \code{mutex} or otherwise, is undefined behaviour after the destructor has run.
     1399\end{cfa}
     1400Note that the destructor of a monitor must be a @mutex@ routine to prevent deallocation while a thread is accessing the monitor.
     1401As with any object, calls to a monitor, using @mutex@ or otherwise, is undefined behaviour after the destructor has run.
    9911402
    9921403% ======================================================================
     
    9951406% ======================================================================
    9961407% ======================================================================
    997 In addition to mutual exclusion, the monitors at the core of \CFA's concurrency can also be used to achieve synchronization. With monitors, this capability is generally achieved with internal or external scheduling as in~\cite{Hoare74}. With \textbf{scheduling} loosely defined as deciding which thread acquires the critical section next, \textbf{internal scheduling} means making the decision from inside the critical section (i.e., with access to the shared state), while \textbf{external scheduling} means making the decision when entering the critical section (i.e., without access to the shared state). Since internal scheduling within a single monitor is mostly a solved problem, this paper concentrates on extending internal scheduling to multiple monitors. Indeed, like the \textbf{bulk-acq} semantics, internal scheduling extends to multiple monitors in a way that is natural to the user but requires additional complexity on the implementation side.
     1408In addition to mutual exclusion, the monitors at the core of \CFA's concurrency can also be used to achieve synchronization.
     1409With monitors, this capability is generally achieved with internal or external scheduling as in~\cite{Hoare74}.
     1410With \textbf{scheduling} loosely defined as deciding which thread acquires the critical section next, \textbf{internal scheduling} means making the decision from inside the critical section (\ie with access to the shared state), while \textbf{external scheduling} means making the decision when entering the critical section (\ie without access to the shared state).
     1411Since internal scheduling within a single monitor is mostly a solved problem, this paper concentrates on extending internal scheduling to multiple monitors.
     1412Indeed, like the \textbf{bulk-acq} semantics, internal scheduling extends to multiple monitors in a way that is natural to the user but requires additional complexity on the implementation side.
    9981413
    9991414First, here is a simple example of internal scheduling:
    10001415
    1001 \begin{cfacode}
     1416\begin{cfa}
    10021417monitor A {
    10031418        condition e;
     
    10061421void foo(A& mutex a1, A& mutex a2) {
    10071422        ...
    1008         //Wait for cooperation from bar()
     1423        // Wait for cooperation from bar()
    10091424        wait(a1.e);
    10101425        ...
     
    10121427
    10131428void bar(A& mutex a1, A& mutex a2) {
    1014         //Provide cooperation for foo()
     1429        // Provide cooperation for foo()
    10151430        ...
    1016         //Unblock foo
     1431        // Unblock foo
    10171432        signal(a1.e);
    10181433}
    1019 \end{cfacode}
    1020 There are two details to note here. First, \code{signal} is a delayed operation; it only unblocks the waiting thread when it reaches the end of the critical section. This semantics is needed to respect mutual-exclusion, i.e., the signaller and signalled thread cannot be in the monitor simultaneously. The alternative is to return immediately after the call to \code{signal}, which is significantly more restrictive. Second, in \CFA, while it is common to store a \code{condition} as a field of the monitor, a \code{condition} variable can be stored/created independently of a monitor. Here routine \code{foo} waits for the \code{signal} from \code{bar} before making further progress, ensuring a basic ordering.
    1021 
    1022 An important aspect of the implementation is that \CFA does not allow barging, which means that once function \code{bar} releases the monitor, \code{foo} is guaranteed to be the next thread to acquire the monitor (unless some other thread waited on the same condition). This guarantee offers the benefit of not having to loop around waits to recheck that a condition is met. The main reason \CFA offers this guarantee is that users can easily introduce barging if it becomes a necessity but adding barging prevention or barging avoidance is more involved without language support. Supporting barging prevention as well as extending internal scheduling to multiple monitors is the main source of complexity in the design and implementation of \CFA concurrency.
     1434\end{cfa}
     1435There are two details to note here.
     1436First, @signal@ is a delayed operation; it only unblocks the waiting thread when it reaches the end of the critical section.
     1437This semantics is needed to respect mutual-exclusion, \ie the signaller and signalled thread cannot be in the monitor simultaneously.
     1438The alternative is to return immediately after the call to @signal@, which is significantly more restrictive.
     1439Second, in \CFA, while it is common to store a @condition@ as a field of the monitor, a @condition@ variable can be stored/created independently of a monitor.
     1440Here routine @foo@ waits for the @signal@ from @bar@ before making further progress, ensuring a basic ordering.
     1441
     1442An important aspect of the implementation is that \CFA does not allow barging, which means that once function @bar@ releases the monitor, @foo@ is guaranteed to be the next thread to acquire the monitor (unless some other thread waited on the same condition).
     1443This guarantee offers the benefit of not having to loop around waits to recheck that a condition is met.
     1444The main reason \CFA offers this guarantee is that users can easily introduce barging if it becomes a necessity but adding barging prevention or barging avoidance is more involved without language support.
     1445Supporting barging prevention as well as extending internal scheduling to multiple monitors is the main source of complexity in the design and implementation of \CFA concurrency.
    10231446
    10241447% ======================================================================
     
    10271450% ======================================================================
    10281451% ======================================================================
    1029 It is easy to understand the problem of multi-monitor scheduling using a series of pseudo-code examples. Note that for simplicity in the following snippets of pseudo-code, waiting and signalling is done using an implicit condition variable, like Java built-in monitors. Indeed, \code{wait} statements always use the implicit condition variable as parameters and explicitly name the monitors (A and B) associated with the condition. Note that in \CFA, condition variables are tied to a \emph{group} of monitors on first use (called branding), which means that using internal scheduling with distinct sets of monitors requires one condition variable per set of monitors. The example below shows the simple case of having two threads (one for each column) and a single monitor A.
     1452It is easy to understand the problem of multi-monitor scheduling using a series of pseudo-code examples.
     1453Note that for simplicity in the following snippets of pseudo-code, waiting and signalling is done using an implicit condition variable, like Java built-in monitors.
     1454Indeed, @wait@ statements always use the implicit condition variable as parameters and explicitly name the monitors (A and B) associated with the condition.
     1455Note that in \CFA, condition variables are tied to a \emph{group} of monitors on first use (called branding), which means that using internal scheduling with distinct sets of monitors requires one condition variable per set of monitors.
     1456The example below shows the simple case of having two threads (one for each column) and a single monitor A.
    10301457
    10311458\begin{multicols}{2}
    10321459thread 1
    1033 \begin{pseudo}
     1460\begin{cfa}
    10341461acquire A
    10351462        wait A
    10361463release A
    1037 \end{pseudo}
     1464\end{cfa}
    10381465
    10391466\columnbreak
    10401467
    10411468thread 2
    1042 \begin{pseudo}
     1469\begin{cfa}
    10431470acquire A
    10441471        signal A
    10451472release A
    1046 \end{pseudo}
     1473\end{cfa}
    10471474\end{multicols}
    1048 One thread acquires before waiting (atomically blocking and releasing A) and the other acquires before signalling. It is important to note here that both \code{wait} and \code{signal} must be called with the proper monitor(s) already acquired. This semantic is a logical requirement for barging prevention.
     1475One thread acquires before waiting (atomically blocking and releasing A) and the other acquires before signalling.
     1476It is important to note here that both @wait@ and @signal@ must be called with the proper monitor(s) already acquired.
     1477This semantic is a logical requirement for barging prevention.
    10491478
    10501479A direct extension of the previous example is a \textbf{bulk-acq} version:
    10511480\begin{multicols}{2}
    1052 \begin{pseudo}
     1481\begin{cfa}
    10531482acquire A & B
    10541483        wait A & B
    10551484release A & B
    1056 \end{pseudo}
     1485\end{cfa}
    10571486\columnbreak
    1058 \begin{pseudo}
     1487\begin{cfa}
    10591488acquire A & B
    10601489        signal A & B
    10611490release A & B
    1062 \end{pseudo}
     1491\end{cfa}
    10631492\end{multicols}
    1064 \noindent This version uses \textbf{bulk-acq} (denoted using the {\sf\&} symbol), but the presence of multiple monitors does not add a particularly new meaning. Synchronization happens between the two threads in exactly the same way and order. The only difference is that mutual exclusion covers a group of monitors. On the implementation side, handling multiple monitors does add a degree of complexity as the next few examples demonstrate.
    1065 
    1066 While deadlock issues can occur when nesting monitors, these issues are only a symptom of the fact that locks, and by extension monitors, are not perfectly composable. For monitors, a well-known deadlock problem is the Nested Monitor Problem~\cite{Lister77}, which occurs when a \code{wait} is made by a thread that holds more than one monitor. For example, the following pseudo-code runs into the nested-monitor problem:
     1493\noindent This version uses \textbf{bulk-acq} (denoted using the {\sf\&} symbol), but the presence of multiple monitors does not add a particularly new meaning.
     1494Synchronization happens between the two threads in exactly the same way and order.
     1495The only difference is that mutual exclusion covers a group of monitors.
     1496On the implementation side, handling multiple monitors does add a degree of complexity as the next few examples demonstrate.
     1497
     1498While deadlock issues can occur when nesting monitors, these issues are only a symptom of the fact that locks, and by extension monitors, are not perfectly composable.
     1499For monitors, a well-known deadlock problem is the Nested Monitor Problem~\cite{Lister77}, which occurs when a @wait@ is made by a thread that holds more than one monitor.
     1500For example, the following cfa-code runs into the nested-monitor problem:
    10671501\begin{multicols}{2}
    1068 \begin{pseudo}
     1502\begin{cfa}
    10691503acquire A
    10701504        acquire B
     
    10721506        release B
    10731507release A
    1074 \end{pseudo}
     1508\end{cfa}
    10751509
    10761510\columnbreak
    10771511
    1078 \begin{pseudo}
     1512\begin{cfa}
    10791513acquire A
    10801514        acquire B
     
    10821516        release B
    10831517release A
    1084 \end{pseudo}
     1518\end{cfa}
    10851519\end{multicols}
    1086 \noindent The \code{wait} only releases monitor \code{B} so the signalling thread cannot acquire monitor \code{A} to get to the \code{signal}. Attempting release of all acquired monitors at the \code{wait} introduces a different set of problems, such as releasing monitor \code{C}, which has nothing to do with the \code{signal}.
    1087 
    1088 However, for monitors as for locks, it is possible to write a program using nesting without encountering any problems if nesting is done correctly. For example, the next pseudo-code snippet acquires monitors {\sf A} then {\sf B} before waiting, while only acquiring {\sf B} when signalling, effectively avoiding the Nested Monitor Problem~\cite{Lister77}.
     1520\noindent The @wait@ only releases monitor @B@ so the signalling thread cannot acquire monitor @A@ to get to the @signal@.
     1521Attempting release of all acquired monitors at the @wait@ introduces a different set of problems, such as releasing monitor @C@, which has nothing to do with the @signal@.
     1522
     1523However, for monitors as for locks, it is possible to write a program using nesting without encountering any problems if nesting is done correctly.
     1524For example, the next cfa-code snippet acquires monitors {\sf A} then {\sf B} before waiting, while only acquiring {\sf B} when signalling, effectively avoiding the Nested Monitor Problem~\cite{Lister77}.
    10891525
    10901526\begin{multicols}{2}
    1091 \begin{pseudo}
     1527\begin{cfa}
    10921528acquire A
    10931529        acquire B
     
    10951531        release B
    10961532release A
    1097 \end{pseudo}
     1533\end{cfa}
    10981534
    10991535\columnbreak
    11001536
    1101 \begin{pseudo}
     1537\begin{cfa}
    11021538
    11031539acquire B
     
    11051541release B
    11061542
    1107 \end{pseudo}
     1543\end{cfa}
    11081544\end{multicols}
    11091545
     
    11161552% ======================================================================
    11171553
    1118 A larger example is presented to show complex issues for \textbf{bulk-acq} and its implementation options are analyzed. Listing \ref{lst:int-bulk-pseudo} shows an example where \textbf{bulk-acq} adds a significant layer of complexity to the internal signalling semantics, and listing \ref{lst:int-bulk-cfa} shows the corresponding \CFA code to implement the pseudo-code in listing \ref{lst:int-bulk-pseudo}. For the purpose of translating the given pseudo-code into \CFA-code, any method of introducing a monitor is acceptable, e.g., \code{mutex} parameters, global variables, pointer parameters, or using locals with the \code{mutex} statement.
    1119 
    1120 \begin{figure}[!t]
     1554A larger example is presented to show complex issues for \textbf{bulk-acq} and its implementation options are analyzed.
     1555Figure~\ref{f:int-bulk-cfa} shows an example where \textbf{bulk-acq} adds a significant layer of complexity to the internal signalling semantics, and listing \ref{f:int-bulk-cfa} shows the corresponding \CFA code to implement the cfa-code in listing \ref{f:int-bulk-cfa}.
     1556For the purpose of translating the given cfa-code into \CFA-code, any method of introducing a monitor is acceptable, \eg @mutex@ parameters, global variables, pointer parameters, or using locals with the @mutex@ statement.
     1557
     1558\begin{figure}
    11211559\begin{multicols}{2}
    11221560Waiting thread
    1123 \begin{pseudo}[numbers=left]
     1561\begin{cfa}[numbers=left]
    11241562acquire A
    1125         //Code Section 1
     1563        // Code Section 1
    11261564        acquire A & B
    1127                 //Code Section 2
     1565                // Code Section 2
    11281566                wait A & B
    1129                 //Code Section 3
     1567                // Code Section 3
    11301568        release A & B
    1131         //Code Section 4
     1569        // Code Section 4
    11321570release A
    1133 \end{pseudo}
     1571\end{cfa}
    11341572\columnbreak
    11351573Signalling thread
    1136 \begin{pseudo}[numbers=left, firstnumber=10,escapechar=|]
     1574\begin{cfa}[numbers=left, firstnumber=10,escapechar=|]
    11371575acquire A
    1138         //Code Section 5
     1576        // Code Section 5
    11391577        acquire A & B
    1140                 //Code Section 6
     1578                // Code Section 6
    11411579                |\label{line:signal1}|signal A & B
    1142                 //Code Section 7
     1580                // Code Section 7
    11431581        |\label{line:releaseFirst}|release A & B
    1144         //Code Section 8
     1582        // Code Section 8
    11451583|\label{line:lastRelease}|release A
    1146 \end{pseudo}
     1584\end{cfa}
    11471585\end{multicols}
    1148 \begin{cfacode}[caption={Internal scheduling with \textbf{bulk-acq}},label={lst:int-bulk-pseudo}]
    1149 \end{cfacode}
     1586\begin{cfa}[caption={Internal scheduling with \textbf{bulk-acq}},label={f:int-bulk-cfa}]
     1587\end{cfa}
    11501588\begin{center}
    1151 \begin{cfacode}[xleftmargin=.4\textwidth]
     1589\begin{cfa}[xleftmargin=.4\textwidth]
    11521590monitor A a;
    11531591monitor B b;
    11541592condition c;
    1155 \end{cfacode}
     1593\end{cfa}
    11561594\end{center}
    11571595\begin{multicols}{2}
    11581596Waiting thread
    1159 \begin{cfacode}
     1597\begin{cfa}
    11601598mutex(a) {
    1161         //Code Section 1
     1599        // Code Section 1
    11621600        mutex(a, b) {
    1163                 //Code Section 2
     1601                // Code Section 2
    11641602                wait(c);
    1165                 //Code Section 3
     1603                // Code Section 3
    11661604        }
    1167         //Code Section 4
    1168 }
    1169 \end{cfacode}
     1605        // Code Section 4
     1606}
     1607\end{cfa}
    11701608\columnbreak
    11711609Signalling thread
    1172 \begin{cfacode}
     1610\begin{cfa}
    11731611mutex(a) {
    1174         //Code Section 5
     1612        // Code Section 5
    11751613        mutex(a, b) {
    1176                 //Code Section 6
     1614                // Code Section 6
    11771615                signal(c);
    1178                 //Code Section 7
     1616                // Code Section 7
    11791617        }
    1180         //Code Section 8
    1181 }
    1182 \end{cfacode}
     1618        // Code Section 8
     1619}
     1620\end{cfa}
    11831621\end{multicols}
    1184 \begin{cfacode}[caption={Equivalent \CFA code for listing \ref{lst:int-bulk-pseudo}},label={lst:int-bulk-cfa}]
    1185 \end{cfacode}
     1622\begin{cfa}[caption={Equivalent \CFA code for listing \ref{f:int-bulk-cfa}},label={f:int-bulk-cfa}]
     1623\end{cfa}
    11861624\begin{multicols}{2}
    11871625Waiter
    1188 \begin{pseudo}[numbers=left]
     1626\begin{cfa}[numbers=left]
    11891627acquire A
    11901628        acquire A & B
     
    11921630        release A & B
    11931631release A
    1194 \end{pseudo}
     1632\end{cfa}
    11951633
    11961634\columnbreak
    11971635
    11981636Signaller
    1199 \begin{pseudo}[numbers=left, firstnumber=6,escapechar=|]
     1637\begin{cfa}[numbers=left, firstnumber=6,escapechar=|]
    12001638acquire A
    12011639        acquire A & B
    12021640                signal A & B
    12031641        release A & B
    1204         |\label{line:secret}|//Secretly keep B here
     1642        |\label{line:secret}|// Secretly keep B here
    12051643release A
    1206 //Wakeup waiter and transfer A & B
    1207 \end{pseudo}
     1644// Wakeup waiter and transfer A & B
     1645\end{cfa}
    12081646\end{multicols}
    1209 \begin{cfacode}[caption={Listing \ref{lst:int-bulk-pseudo}, with delayed signalling comments},label={lst:int-secret}]
    1210 \end{cfacode}
     1647\begin{cfa}[caption={Figure~\ref{f:int-bulk-cfa}, with delayed signalling comments},label={f:int-secret}]
     1648\end{cfa}
    12111649\end{figure}
    12121650
    1213 The complexity begins at code sections 4 and 8 in listing \ref{lst:int-bulk-pseudo}, which are where the existing semantics of internal scheduling needs to be extended for multiple monitors. The root of the problem is that \textbf{bulk-acq} is used in a context where one of the monitors is already acquired, which is why it is important to define the behaviour of the previous pseudo-code. When the signaller thread reaches the location where it should ``release \code{A & B}'' (listing \ref{lst:int-bulk-pseudo} line \ref{line:releaseFirst}), it must actually transfer ownership of monitor \code{B} to the waiting thread. This ownership transfer is required in order to prevent barging into \code{B} by another thread, since both the signalling and signalled threads still need monitor \code{A}. There are three options:
     1651The complexity begins at code sections 4 and 8 in listing \ref{f:int-bulk-cfa}, which are where the existing semantics of internal scheduling needs to be extended for multiple monitors.
     1652The root of the problem is that \textbf{bulk-acq} is used in a context where one of the monitors is already acquired, which is why it is important to define the behaviour of the previous cfa-code.
     1653When the signaller thread reaches the location where it should ``release @A & B@'' (listing \ref{f:int-bulk-cfa} line \ref{line:releaseFirst}), it must actually transfer ownership of monitor @B@ to the waiting thread.
     1654This ownership transfer is required in order to prevent barging into @B@ by another thread, since both the signalling and signalled threads still need monitor @A@.
     1655There are three options:
    12141656
    12151657\subsubsection{Delaying Signals}
    1216 The obvious solution to the problem of multi-monitor scheduling is to keep ownership of all locks until the last lock is ready to be transferred. It can be argued that that moment is when the last lock is no longer needed, because this semantics fits most closely to the behaviour of single-monitor scheduling. This solution has the main benefit of transferring ownership of groups of monitors, which simplifies the semantics from multiple objects to a single group of objects, effectively making the existing single-monitor semantic viable by simply changing monitors to monitor groups. This solution releases the monitors once every monitor in a group can be released. However, since some monitors are never released (e.g., the monitor of a thread), this interpretation means a group might never be released. A more interesting interpretation is to transfer the group until all its monitors are released, which means the group is not passed further and a thread can retain its locks.
    1217 
    1218 However, listing \ref{lst:int-secret} shows this solution can become much more complicated depending on what is executed while secretly holding B at line \ref{line:secret}, while avoiding the need to transfer ownership of a subset of the condition monitors. Listing \ref{lst:dependency} shows a slightly different example where a third thread is waiting on monitor \code{A}, using a different condition variable. Because the third thread is signalled when secretly holding \code{B}, the goal  becomes unreachable. Depending on the order of signals (listing \ref{lst:dependency} line \ref{line:signal-ab} and \ref{line:signal-a}) two cases can happen:
    1219 
    1220 \paragraph{Case 1: thread $\alpha$ goes first.} In this case, the problem is that monitor \code{A} needs to be passed to thread $\beta$ when thread $\alpha$ is done with it.
    1221 \paragraph{Case 2: thread $\beta$ goes first.} In this case, the problem is that monitor \code{B} needs to be retained and passed to thread $\alpha$ along with monitor \code{A}, which can be done directly or possibly using thread $\beta$ as an intermediate.
     1658The obvious solution to the problem of multi-monitor scheduling is to keep ownership of all locks until the last lock is ready to be transferred.
     1659It can be argued that that moment is when the last lock is no longer needed, because this semantics fits most closely to the behaviour of single-monitor scheduling.
     1660This solution has the main benefit of transferring ownership of groups of monitors, which simplifies the semantics from multiple objects to a single group of objects, effectively making the existing single-monitor semantic viable by simply changing monitors to monitor groups.
     1661This solution releases the monitors once every monitor in a group can be released.
     1662However, since some monitors are never released (\eg the monitor of a thread), this interpretation means a group might never be released.
     1663A more interesting interpretation is to transfer the group until all its monitors are released, which means the group is not passed further and a thread can retain its locks.
     1664
     1665However, listing \ref{f:int-secret} shows this solution can become much more complicated depending on what is executed while secretly holding B at line \ref{line:secret}, while avoiding the need to transfer ownership of a subset of the condition monitors.
     1666Figure~\ref{f:dependency} shows a slightly different example where a third thread is waiting on monitor @A@, using a different condition variable.
     1667Because the third thread is signalled when secretly holding @B@, the goal  becomes unreachable.
     1668Depending on the order of signals (listing \ref{f:dependency} line \ref{line:signal-ab} and \ref{line:signal-a}) two cases can happen:
     1669
     1670\paragraph{Case 1: thread $\alpha$ goes first.} In this case, the problem is that monitor @A@ needs to be passed to thread $\beta$ when thread $\alpha$ is done with it.
     1671\paragraph{Case 2: thread $\beta$ goes first.} In this case, the problem is that monitor @B@ needs to be retained and passed to thread $\alpha$ along with monitor @A@, which can be done directly or possibly using thread $\beta$ as an intermediate.
    12221672\\
    12231673
    1224 Note that ordering is not determined by a race condition but by whether signalled threads are enqueued in FIFO or FILO order. However, regardless of the answer, users can move line \ref{line:signal-a} before line \ref{line:signal-ab} and get the reverse effect for listing \ref{lst:dependency}.
     1674Note that ordering is not determined by a race condition but by whether signalled threads are enqueued in FIFO or FILO order.
     1675However, regardless of the answer, users can move line \ref{line:signal-a} before line \ref{line:signal-ab} and get the reverse effect for listing \ref{f:dependency}.
    12251676
    12261677In both cases, the threads need to be able to distinguish, on a per monitor basis, which ones need to be released and which ones need to be transferred, which means knowing when to release a group becomes complex and inefficient (see next section) and therefore effectively precludes this approach.
     
    12321683\begin{multicols}{3}
    12331684Thread $\alpha$
    1234 \begin{pseudo}[numbers=left, firstnumber=1]
     1685\begin{cfa}[numbers=left, firstnumber=1]
    12351686acquire A
    12361687        acquire A & B
     
    12381689        release A & B
    12391690release A
    1240 \end{pseudo}
     1691\end{cfa}
    12411692\columnbreak
    12421693Thread $\gamma$
    1243 \begin{pseudo}[numbers=left, firstnumber=6, escapechar=|]
     1694\begin{cfa}[numbers=left, firstnumber=6, escapechar=|]
    12441695acquire A
    12451696        acquire A & B
     
    12481699        |\label{line:signal-a}|signal A
    12491700|\label{line:release-a}|release A
    1250 \end{pseudo}
     1701\end{cfa}
    12511702\columnbreak
    12521703Thread $\beta$
    1253 \begin{pseudo}[numbers=left, firstnumber=12, escapechar=|]
     1704\begin{cfa}[numbers=left, firstnumber=12, escapechar=|]
    12541705acquire A
    12551706        wait A
    12561707|\label{line:release-aa}|release A
    1257 \end{pseudo}
     1708\end{cfa}
    12581709\end{multicols}
    1259 \begin{cfacode}[caption={Pseudo-code for the three thread example.},label={lst:dependency}]
    1260 \end{cfacode}
     1710\begin{cfa}[caption={Pseudo-code for the three thread example.},label={f:dependency}]
     1711\end{cfa}
    12611712\begin{center}
    12621713\input{dependency}
    12631714\end{center}
    1264 \caption{Dependency graph of the statements in listing \ref{lst:dependency}}
     1715\caption{Dependency graph of the statements in listing \ref{f:dependency}}
    12651716\label{fig:dependency}
    12661717\end{figure}
    12671718
    1268 In listing \ref{lst:int-bulk-pseudo}, there is a solution that satisfies both barging prevention and mutual exclusion. If ownership of both monitors is transferred to the waiter when the signaller releases \code{A & B} and then the waiter transfers back ownership of \code{A} back to the signaller when it releases it, then the problem is solved (\code{B} is no longer in use at this point). Dynamically finding the correct order is therefore the second possible solution. The problem is effectively resolving a dependency graph of ownership requirements. Here even the simplest of code snippets requires two transfers and has a super-linear complexity. This complexity can be seen in listing \ref{lst:explosion}, which is just a direct extension to three monitors, requires at least three ownership transfer and has multiple solutions. Furthermore, the presence of multiple solutions for ownership transfer can cause deadlock problems if a specific solution is not consistently picked; In the same way that multiple lock acquiring order can cause deadlocks.
     1719In listing \ref{f:int-bulk-cfa}, there is a solution that satisfies both barging prevention and mutual exclusion.
     1720If ownership of both monitors is transferred to the waiter when the signaller releases @A & B@ and then the waiter transfers back ownership of @A@ back to the signaller when it releases it, then the problem is solved (@B@ is no longer in use at this point).
     1721Dynamically finding the correct order is therefore the second possible solution.
     1722The problem is effectively resolving a dependency graph of ownership requirements.
     1723Here even the simplest of code snippets requires two transfers and has a super-linear complexity.
     1724This complexity can be seen in listing \ref{f:explosion}, which is just a direct extension to three monitors, requires at least three ownership transfer and has multiple solutions.
     1725Furthermore, the presence of multiple solutions for ownership transfer can cause deadlock problems if a specific solution is not consistently picked; In the same way that multiple lock acquiring order can cause deadlocks.
    12691726\begin{figure}
    12701727\begin{multicols}{2}
    1271 \begin{pseudo}
     1728\begin{cfa}
    12721729acquire A
    12731730        acquire B
     
    12771734        release B
    12781735release A
    1279 \end{pseudo}
     1736\end{cfa}
    12801737
    12811738\columnbreak
    12821739
    1283 \begin{pseudo}
     1740\begin{cfa}
    12841741acquire A
    12851742        acquire B
     
    12891746        release B
    12901747release A
    1291 \end{pseudo}
     1748\end{cfa}
    12921749\end{multicols}
    1293 \begin{cfacode}[caption={Extension to three monitors of listing \ref{lst:int-bulk-pseudo}},label={lst:explosion}]
    1294 \end{cfacode}
     1750\begin{cfa}[caption={Extension to three monitors of listing \ref{f:int-bulk-cfa}},label={f:explosion}]
     1751\end{cfa}
    12951752\end{figure}
    12961753
    1297 Given the three threads example in listing \ref{lst:dependency}, figure \ref{fig:dependency} shows the corresponding dependency graph that results, where every node is a statement of one of the three threads, and the arrows the dependency of that statement (e.g., $\alpha1$ must happen before $\alpha2$). The extra challenge is that this dependency graph is effectively post-mortem, but the runtime system needs to be able to build and solve these graphs as the dependencies unfold. Resolving dependency graphs being a complex and expensive endeavour, this solution is not the preferred one.
     1754Given the three threads example in listing \ref{f:dependency}, figure \ref{fig:dependency} shows the corresponding dependency graph that results, where every node is a statement of one of the three threads, and the arrows the dependency of that statement (\eg $\alpha1$ must happen before $\alpha2$).
     1755The extra challenge is that this dependency graph is effectively post-mortem, but the runtime system needs to be able to build and solve these graphs as the dependencies unfold.
     1756Resolving dependency graphs being a complex and expensive endeavour, this solution is not the preferred one.
    12981757
    12991758\subsubsection{Partial Signalling} \label{partial-sig}
    1300 Finally, the solution that is chosen for \CFA is to use partial signalling. Again using listing \ref{lst:int-bulk-pseudo}, the partial signalling solution transfers ownership of monitor \code{B} at lines \ref{line:signal1} to the waiter but does not wake the waiting thread since it is still using monitor \code{A}. Only when it reaches line \ref{line:lastRelease} does it actually wake up the waiting thread. This solution has the benefit that complexity is encapsulated into only two actions: passing monitors to the next owner when they should be released and conditionally waking threads if all conditions are met. This solution has a much simpler implementation than a dependency graph solving algorithms, which is why it was chosen. Furthermore, after being fully implemented, this solution does not appear to have any significant downsides.
    1301 
    1302 Using partial signalling, listing \ref{lst:dependency} can be solved easily:
     1759Finally, the solution that is chosen for \CFA is to use partial signalling.
     1760Again using listing \ref{f:int-bulk-cfa}, the partial signalling solution transfers ownership of monitor @B@ at lines \ref{line:signal1} to the waiter but does not wake the waiting thread since it is still using monitor @A@.
     1761Only when it reaches line \ref{line:lastRelease} does it actually wake up the waiting thread.
     1762This solution has the benefit that complexity is encapsulated into only two actions: passing monitors to the next owner when they should be released and conditionally waking threads if all conditions are met.
     1763This solution has a much simpler implementation than a dependency graph solving algorithms, which is why it was chosen.
     1764Furthermore, after being fully implemented, this solution does not appear to have any significant downsides.
     1765
     1766Using partial signalling, listing \ref{f:dependency} can be solved easily:
    13031767\begin{itemize}
    1304         \item When thread $\gamma$ reaches line \ref{line:release-ab} it transfers monitor \code{B} to thread $\alpha$ and continues to hold monitor \code{A}.
    1305         \item When thread $\gamma$ reaches line \ref{line:release-a}  it transfers monitor \code{A} to thread $\beta$  and wakes it up.
    1306         \item When thread $\beta$  reaches line \ref{line:release-aa} it transfers monitor \code{A} to thread $\alpha$ and wakes it up.
     1768        \item When thread $\gamma$ reaches line \ref{line:release-ab} it transfers monitor @B@ to thread $\alpha$ and continues to hold monitor @A@.
     1769        \item When thread $\gamma$ reaches line \ref{line:release-a}  it transfers monitor @A@ to thread $\beta$  and wakes it up.
     1770        \item When thread $\beta$  reaches line \ref{line:release-aa} it transfers monitor @A@ to thread $\alpha$ and wakes it up.
    13071771\end{itemize}
    13081772
     
    13141778\begin{table}
    13151779\begin{tabular}{|c|c|}
    1316 \code{signal} & \code{signal_block} \\
     1780@signal@ & @signal_block@ \\
    13171781\hline
    1318 \begin{cfacode}[tabsize=3]
    1319 monitor DatingService
    1320 {
    1321         //compatibility codes
     1782\begin{cfa}[tabsize=3]
     1783monitor DatingService {
     1784        // compatibility codes
    13221785        enum{ CCodes = 20 };
    13231786
     
    13301793condition exchange;
    13311794
    1332 int girl(int phoneNo, int ccode)
    1333 {
    1334         //no compatible boy ?
    1335         if(empty(boys[ccode]))
    1336         {
    1337                 //wait for boy
    1338                 wait(girls[ccode]);
    1339 
    1340                 //make phone number available
    1341                 girlPhoneNo = phoneNo;
    1342 
    1343                 //wake boy from chair
    1344                 signal(exchange);
    1345         }
    1346         else
    1347         {
    1348                 //make phone number available
    1349                 girlPhoneNo = phoneNo;
    1350 
    1351                 //wake boy
    1352                 signal(boys[ccode]);
    1353 
    1354                 //sit in chair
    1355                 wait(exchange);
     1795int girl(int phoneNo, int cfa) {
     1796        // no compatible boy ?
     1797        if(empty(boys[cfa])) {
     1798                wait(girls[cfa]);               // wait for boy
     1799                girlPhoneNo = phoneNo;          // make phone number available
     1800                signal(exchange);               // wake boy from chair
     1801        } else {
     1802                girlPhoneNo = phoneNo;          // make phone number available
     1803                signal(boys[cfa]);              // wake boy
     1804                wait(exchange);         // sit in chair
    13561805        }
    13571806        return boyPhoneNo;
    13581807}
    1359 
    1360 int boy(int phoneNo, int ccode)
    1361 {
    1362         //same as above
    1363         //with boy/girl interchanged
    1364 }
    1365 \end{cfacode}&\begin{cfacode}[tabsize=3]
    1366 monitor DatingService
    1367 {
    1368         //compatibility codes
    1369         enum{ CCodes = 20 };
     1808int boy(int phoneNo, int cfa) {
     1809        // same as above
     1810        // with boy/girl interchanged
     1811}
     1812\end{cfa}&\begin{cfa}[tabsize=3]
     1813monitor DatingService {
     1814
     1815        enum{ CCodes = 20 };    // compatibility codes
    13701816
    13711817        int girlPhoneNo;
     
    13751821condition girls[CCodes];
    13761822condition boys [CCodes];
    1377 //exchange is not needed
    1378 
    1379 int girl(int phoneNo, int ccode)
    1380 {
    1381         //no compatible boy ?
    1382         if(empty(boys[ccode]))
    1383         {
    1384                 //wait for boy
    1385                 wait(girls[ccode]);
    1386 
    1387                 //make phone number available
    1388                 girlPhoneNo = phoneNo;
    1389 
    1390                 //wake boy from chair
    1391                 signal(exchange);
    1392         }
    1393         else
    1394         {
    1395                 //make phone number available
    1396                 girlPhoneNo = phoneNo;
    1397 
    1398                 //wake boy
    1399                 signal_block(boys[ccode]);
    1400 
    1401                 //second handshake unnecessary
     1823// exchange is not needed
     1824
     1825int girl(int phoneNo, int cfa) {
     1826        // no compatible boy ?
     1827        if(empty(boys[cfa])) {
     1828                wait(girls[cfa]);               // wait for boy
     1829                girlPhoneNo = phoneNo;          // make phone number available
     1830                signal(exchange);               // wake boy from chair
     1831        } else {
     1832                girlPhoneNo = phoneNo;          // make phone number available
     1833                signal_block(boys[cfa]);                // wake boy
     1834
     1835                // second handshake unnecessary
    14021836
    14031837        }
     
    14051839}
    14061840
    1407 int boy(int phoneNo, int ccode)
    1408 {
    1409         //same as above
    1410         //with boy/girl interchanged
    1411 }
    1412 \end{cfacode}
     1841int boy(int phoneNo, int cfa) {
     1842        // same as above
     1843        // with boy/girl interchanged
     1844}
     1845\end{cfa}
    14131846\end{tabular}
    1414 \caption{Dating service example using \code{signal} and \code{signal_block}. }
     1847\caption{Dating service example using \protect\lstinline|signal| and \protect\lstinline|signal_block|. }
    14151848\label{tbl:datingservice}
    14161849\end{table}
    1417 An important note is that, until now, signalling a monitor was a delayed operation. The ownership of the monitor is transferred only when the monitor would have otherwise been released, not at the point of the \code{signal} statement. However, in some cases, it may be more convenient for users to immediately transfer ownership to the thread that is waiting for cooperation, which is achieved using the \code{signal_block} routine.
    1418 
    1419 The example in table \ref{tbl:datingservice} highlights the difference in behaviour. As mentioned, \code{signal} only transfers ownership once the current critical section exits; this behaviour requires additional synchronization when a two-way handshake is needed. To avoid this explicit synchronization, the \code{condition} type offers the \code{signal_block} routine, which handles the two-way handshake as shown in the example. This feature removes the need for a second condition variables and simplifies programming. Like every other monitor semantic, \code{signal_block} uses barging prevention, which means mutual-exclusion is baton-passed both on the front end and the back end of the call to \code{signal_block}, meaning no other thread can acquire the monitor either before or after the call.
     1850An important note is that, until now, signalling a monitor was a delayed operation.
     1851The ownership of the monitor is transferred only when the monitor would have otherwise been released, not at the point of the @signal@ statement.
     1852However, in some cases, it may be more convenient for users to immediately transfer ownership to the thread that is waiting for cooperation, which is achieved using the @signal_block@ routine.
     1853
     1854The example in table \ref{tbl:datingservice} highlights the difference in behaviour.
     1855As mentioned, @signal@ only transfers ownership once the current critical section exits; this behaviour requires additional synchronization when a two-way handshake is needed.
     1856To avoid this explicit synchronization, the @condition@ type offers the @signal_block@ routine, which handles the two-way handshake as shown in the example.
     1857This feature removes the need for a second condition variables and simplifies programming.
     1858Like every other monitor semantic, @signal_block@ uses barging prevention, which means mutual-exclusion is baton-passed both on the front end and the back end of the call to @signal_block@, meaning no other thread can acquire the monitor either before or after the call.
    14201859
    14211860% ======================================================================
     
    14291868Internal Scheduling & External Scheduling & Go\\
    14301869\hline
    1431 \begin{ucppcode}[tabsize=3]
     1870\begin{uC++}[tabsize=3]
    14321871_Monitor Semaphore {
    14331872        condition c;
     
    14441883        }
    14451884}
    1446 \end{ucppcode}&\begin{ucppcode}[tabsize=3]
     1885\end{uC++}&\begin{uC++}[tabsize=3]
    14471886_Monitor Semaphore {
    14481887
     
    14591898        }
    14601899}
    1461 \end{ucppcode}&\begin{gocode}[tabsize=3]
     1900\end{uC++}&\begin{Go}[tabsize=3]
    14621901type MySem struct {
    14631902        inUse bool
     
    14791918        s.inUse = false
    14801919
    1481         //This actually deadlocks
    1482         //when single thread
     1920        // This actually deadlocks
     1921        // when single thread
    14831922        s.c <- false
    14841923}
    1485 \end{gocode}
     1924\end{Go}
    14861925\end{tabular}
    14871926\caption{Different forms of scheduling.}
    14881927\label{tbl:sched}
    14891928\end{table}
    1490 This method is more constrained and explicit, which helps users reduce the non-deterministic nature of concurrency. Indeed, as the following examples demonstrate, external scheduling allows users to wait for events from other threads without the concern of unrelated events occurring. External scheduling can generally be done either in terms of control flow (e.g., Ada with \code{accept}, \uC with \code{_Accept}) or in terms of data (e.g., Go with channels). Of course, both of these paradigms have their own strengths and weaknesses, but for this project, control-flow semantics was chosen to stay consistent with the rest of the languages semantics. Two challenges specific to \CFA arise when trying to add external scheduling with loose object definitions and multiple-monitor routines. The previous example shows a simple use \code{_Accept} versus \code{wait}/\code{signal} and its advantages. Note that while other languages often use \code{accept}/\code{select} as the core external scheduling keyword, \CFA uses \code{waitfor} to prevent name collisions with existing socket \textbf{api}s.
    1491 
    1492 For the \code{P} member above using internal scheduling, the call to \code{wait} only guarantees that \code{V} is the last routine to access the monitor, allowing a third routine, say \code{isInUse()}, acquire mutual exclusion several times while routine \code{P} is waiting. On the other hand, external scheduling guarantees that while routine \code{P} is waiting, no other routine than \code{V} can acquire the monitor.
     1929This method is more constrained and explicit, which helps users reduce the non-deterministic nature of concurrency.
     1930Indeed, as the following examples demonstrate, external scheduling allows users to wait for events from other threads without the concern of unrelated events occurring.
     1931External scheduling can generally be done either in terms of control flow (\eg Ada with @accept@, \uC with @_Accept@) or in terms of data (\eg Go with channels).
     1932Of course, both of these paradigms have their own strengths and weaknesses, but for this project, control-flow semantics was chosen to stay consistent with the rest of the languages semantics.
     1933Two challenges specific to \CFA arise when trying to add external scheduling with loose object definitions and multiple-monitor routines.
     1934The previous example shows a simple use @_Accept@ versus @wait@/@signal@ and its advantages.
     1935Note that while other languages often use @accept@/@select@ as the core external scheduling keyword, \CFA uses @waitfor@ to prevent name collisions with existing socket \textbf{api}s.
     1936
     1937For the @P@ member above using internal scheduling, the call to @wait@ only guarantees that @V@ is the last routine to access the monitor, allowing a third routine, say @isInUse()@, acquire mutual exclusion several times while routine @P@ is waiting.
     1938On the other hand, external scheduling guarantees that while routine @P@ is waiting, no other routine than @V@ can acquire the monitor.
    14931939
    14941940% ======================================================================
     
    14971943% ======================================================================
    14981944% ======================================================================
    1499 In \uC, a monitor class declaration includes an exhaustive list of monitor operations. Since \CFA is not object oriented, monitors become both more difficult to implement and less clear for a user:
    1500 
    1501 \begin{cfacode}
     1945In \uC, a monitor class declaration includes an exhaustive list of monitor operations.
     1946Since \CFA is not object oriented, monitors become both more difficult to implement and less clear for a user:
     1947
     1948\begin{cfa}
    15021949monitor A {};
    15031950
    15041951void f(A & mutex a);
    15051952void g(A & mutex a) {
    1506         waitfor(f); //Obvious which f() to wait for
    1507 }
    1508 
    1509 void f(A & mutex a, int); //New different F added in scope
     1953        waitfor(f); // Obvious which f() to wait for
     1954}
     1955
     1956void f(A & mutex a, int); // New different F added in scope
    15101957void h(A & mutex a) {
    1511         waitfor(f); //Less obvious which f() to wait for
    1512 }
    1513 \end{cfacode}
    1514 
    1515 Furthermore, external scheduling is an example where implementation constraints become visible from the interface. Here is the pseudo-code for the entering phase of a monitor:
     1958        waitfor(f); // Less obvious which f() to wait for
     1959}
     1960\end{cfa}
     1961
     1962Furthermore, external scheduling is an example where implementation constraints become visible from the interface.
     1963Here is the cfa-code for the entering phase of a monitor:
    15161964\begin{center}
    15171965\begin{tabular}{l}
    1518 \begin{pseudo}
     1966\begin{cfa}
    15191967        if monitor is free
    15201968                enter
     
    15251973        else
    15261974                block
    1527 \end{pseudo}
     1975\end{cfa}
    15281976\end{tabular}
    15291977\end{center}
    1530 For the first two conditions, it is easy to implement a check that can evaluate the condition in a few instructions. However, a fast check for \pscode{monitor accepts me} is much harder to implement depending on the constraints put on the monitors. Indeed, monitors are often expressed as an entry queue and some acceptor queue as in Figure~\ref{fig:ClassicalMonitor}.
     1978For the first two conditions, it is easy to implement a check that can evaluate the condition in a few instructions.
     1979However, a fast check for @monitor accepts me@ is much harder to implement depending on the constraints put on the monitors.
     1980Indeed, monitors are often expressed as an entry queue and some acceptor queue as in Figure~\ref{fig:ClassicalMonitor}.
    15311981
    15321982\begin{figure}
     
    15441994\end{figure}
    15451995
    1546 There are other alternatives to these pictures, but in the case of the left picture, implementing a fast accept check is relatively easy. Restricted to a fixed number of mutex members, N, the accept check reduces to updating a bitmask when the acceptor queue changes, a check that executes in a single instruction even with a fairly large number (e.g., 128) of mutex members. This approach requires a unique dense ordering of routines with an upper-bound and that ordering must be consistent across translation units. For OO languages these constraints are common, since objects only offer adding member routines consistently across translation units via inheritance. However, in \CFA users can extend objects with mutex routines that are only visible in certain translation unit. This means that establishing a program-wide dense-ordering among mutex routines can only be done in the program linking phase, and still could have issues when using dynamically shared objects.
     1996There are other alternatives to these pictures, but in the case of the left picture, implementing a fast accept check is relatively easy.
     1997Restricted to a fixed number of mutex members, N, the accept check reduces to updating a bitmask when the acceptor queue changes, a check that executes in a single instruction even with a fairly large number (\eg 128) of mutex members.
     1998This approach requires a unique dense ordering of routines with an upper-bound and that ordering must be consistent across translation units.
     1999For OO languages these constraints are common, since objects only offer adding member routines consistently across translation units via inheritance.
     2000However, in \CFA users can extend objects with mutex routines that are only visible in certain translation unit.
     2001This means that establishing a program-wide dense-ordering among mutex routines can only be done in the program linking phase, and still could have issues when using dynamically shared objects.
    15472002
    15482003The alternative is to alter the implementation as in Figure~\ref{fig:BulkMonitor}.
    1549 Here, the mutex routine called is associated with a thread on the entry queue while a list of acceptable routines is kept separate. Generating a mask dynamically means that the storage for the mask information can vary between calls to \code{waitfor}, allowing for more flexibility and extensions. Storing an array of accepted function pointers replaces the single instruction bitmask comparison with dereferencing a pointer followed by a linear search. Furthermore, supporting nested external scheduling (e.g., listing \ref{lst:nest-ext}) may now require additional searches for the \code{waitfor} statement to check if a routine is already queued.
     2004Here, the mutex routine called is associated with a thread on the entry queue while a list of acceptable routines is kept separate.
     2005Generating a mask dynamically means that the storage for the mask information can vary between calls to @waitfor@, allowing for more flexibility and extensions.
     2006Storing an array of accepted function pointers replaces the single instruction bitmask comparison with dereferencing a pointer followed by a linear search.
     2007Furthermore, supporting nested external scheduling (\eg listing \ref{f:nest-ext}) may now require additional searches for the @waitfor@ statement to check if a routine is already queued.
    15502008
    15512009\begin{figure}
    1552 \begin{cfacode}[caption={Example of nested external scheduling},label={lst:nest-ext}]
     2010\begin{cfa}[caption={Example of nested external scheduling},label={f:nest-ext}]
    15532011monitor M {};
    15542012void foo( M & mutex a ) {}
    15552013void bar( M & mutex b ) {
    1556         //Nested in the waitfor(bar, c) call
     2014        // Nested in the waitfor(bar, c) call
    15572015        waitfor(foo, b);
    15582016}
     
    15612019}
    15622020
    1563 \end{cfacode}
     2021\end{cfa}
    15642022\end{figure}
    15652023
    1566 Note that in the right picture, tasks need to always keep track of the monitors associated with mutex routines, and the routine mask needs to have both a function pointer and a set of monitors, as is discussed in the next section. These details are omitted from the picture for the sake of simplicity.
    1567 
    1568 At this point, a decision must be made between flexibility and performance. Many design decisions in \CFA achieve both flexibility and performance, for example polymorphic routines add significant flexibility but inlining them means the optimizer can easily remove any runtime cost. Here, however, the cost of flexibility cannot be trivially removed. In the end, the most flexible approach has been chosen since it allows users to write programs that would otherwise be  hard to write. This decision is based on the assumption that writing fast but inflexible locks is closer to a solved problem than writing locks that are as flexible as external scheduling in \CFA.
     2024Note that in the right picture, tasks need to always keep track of the monitors associated with mutex routines, and the routine mask needs to have both a function pointer and a set of monitors, as is discussed in the next section.
     2025These details are omitted from the picture for the sake of simplicity.
     2026
     2027At this point, a decision must be made between flexibility and performance.
     2028Many design decisions in \CFA achieve both flexibility and performance, for example polymorphic routines add significant flexibility but inlining them means the optimizer can easily remove any runtime cost.
     2029Here, however, the cost of flexibility cannot be trivially removed.
     2030In the end, the most flexible approach has been chosen since it allows users to write programs that would otherwise be  hard to write.
     2031This decision is based on the assumption that writing fast but inflexible locks is closer to a solved problem than writing locks that are as flexible as external scheduling in \CFA.
    15692032
    15702033% ======================================================================
     
    15742037% ======================================================================
    15752038
    1576 External scheduling, like internal scheduling, becomes significantly more complex when introducing multi-monitor syntax. Even in the simplest possible case, some new semantics needs to be established:
    1577 \begin{cfacode}
     2039External scheduling, like internal scheduling, becomes significantly more complex when introducing multi-monitor syntax.
     2040Even in the simplest possible case, some new semantics needs to be established:
     2041\begin{cfa}
    15782042monitor M {};
    15792043
     
    15812045
    15822046void g(M & mutex b, M & mutex c) {
    1583         waitfor(f); //two monitors M => unknown which to pass to f(M & mutex)
    1584 }
    1585 \end{cfacode}
     2047        waitfor(f); // two monitors M => unknown which to pass to f(M & mutex)
     2048}
     2049\end{cfa}
    15862050The obvious solution is to specify the correct monitor as follows:
    15872051
    1588 \begin{cfacode}
     2052\begin{cfa}
    15892053monitor M {};
    15902054
     
    15922056
    15932057void g(M & mutex a, M & mutex b) {
    1594         //wait for call to f with argument b
     2058        // wait for call to f with argument b
    15952059        waitfor(f, b);
    15962060}
    1597 \end{cfacode}
    1598 This syntax is unambiguous. Both locks are acquired and kept by \code{g}. When routine \code{f} is called, the lock for monitor \code{b} is temporarily transferred from \code{g} to \code{f} (while \code{g} still holds lock \code{a}). This behaviour can be extended to the multi-monitor \code{waitfor} statement as follows.
    1599 
    1600 \begin{cfacode}
     2061\end{cfa}
     2062This syntax is unambiguous.
     2063Both locks are acquired and kept by @g@.
     2064When routine @f@ is called, the lock for monitor @b@ is temporarily transferred from @g@ to @f@ (while @g@ still holds lock @a@).
     2065This behaviour can be extended to the multi-monitor @waitfor@ statement as follows.
     2066
     2067\begin{cfa}
    16012068monitor M {};
    16022069
     
    16042071
    16052072void g(M & mutex a, M & mutex b) {
    1606         //wait for call to f with arguments a and b
     2073        // wait for call to f with arguments a and b
    16072074        waitfor(f, a, b);
    16082075}
    1609 \end{cfacode}
    1610 
    1611 Note that the set of monitors passed to the \code{waitfor} statement must be entirely contained in the set of monitors already acquired in the routine. \code{waitfor} used in any other context is undefined behaviour.
     2076\end{cfa}
     2077
     2078Note that the set of monitors passed to the @waitfor@ statement must be entirely contained in the set of monitors already acquired in the routine. @waitfor@ used in any other context is undefined behaviour.
    16122079
    16132080An important behaviour to note is when a set of monitors only match partially:
    16142081
    1615 \begin{cfacode}
     2082\begin{cfa}
    16162083mutex struct A {};
    16172084
     
    16262093
    16272094void foo() {
    1628         g(a1, b); //block on accept
     2095        g(a1, b); // block on accept
    16292096}
    16302097
    16312098void bar() {
    1632         f(a2, b); //fulfill cooperation
    1633 }
    1634 \end{cfacode}
    1635 While the equivalent can happen when using internal scheduling, the fact that conditions are specific to a set of monitors means that users have to use two different condition variables. In both cases, partially matching monitor sets does not wakeup the waiting thread. It is also important to note that in the case of external scheduling the order of parameters is irrelevant; \code{waitfor(f,a,b)} and \code{waitfor(f,b,a)} are indistinguishable waiting condition.
    1636 
    1637 % ======================================================================
    1638 % ======================================================================
    1639 \subsection{\code{waitfor} Semantics}
    1640 % ======================================================================
    1641 % ======================================================================
    1642 
    1643 Syntactically, the \code{waitfor} statement takes a function identifier and a set of monitors. While the set of monitors can be any list of expressions, the function name is more restricted because the compiler validates at compile time the validity of the function type and the parameters used with the \code{waitfor} statement. It checks that the set of monitors passed in matches the requirements for a function call. Listing \ref{lst:waitfor} shows various usages of the waitfor statement and which are acceptable. The choice of the function type is made ignoring any non-\code{mutex} parameter. One limitation of the current implementation is that it does not handle overloading, but overloading is possible.
     2099        f(a2, b); // fulfill cooperation
     2100}
     2101\end{cfa}
     2102While the equivalent can happen when using internal scheduling, the fact that conditions are specific to a set of monitors means that users have to use two different condition variables.
     2103In both cases, partially matching monitor sets does not wakeup the waiting thread.
     2104It is also important to note that in the case of external scheduling the order of parameters is irrelevant; @waitfor(f,a,b)@ and @waitfor(f,b,a)@ are indistinguishable waiting condition.
     2105
     2106% ======================================================================
     2107% ======================================================================
     2108\subsection{\protect\lstinline|waitfor| Semantics}
     2109% ======================================================================
     2110% ======================================================================
     2111
     2112Syntactically, the @waitfor@ statement takes a function identifier and a set of monitors.
     2113While the set of monitors can be any list of expressions, the function name is more restricted because the compiler validates at compile time the validity of the function type and the parameters used with the @waitfor@ statement.
     2114It checks that the set of monitors passed in matches the requirements for a function call.
     2115Figure~\ref{f:waitfor} shows various usages of the waitfor statement and which are acceptable.
     2116The choice of the function type is made ignoring any non-@mutex@ parameter.
     2117One limitation of the current implementation is that it does not handle overloading, but overloading is possible.
    16442118\begin{figure}
    1645 \begin{cfacode}[caption={Various correct and incorrect uses of the waitfor statement},label={lst:waitfor}]
     2119\begin{cfa}[caption={Various correct and incorrect uses of the waitfor statement},label={f:waitfor}]
    16462120monitor A{};
    16472121monitor B{};
     
    16572131        void (*fp)( A & mutex ) = f1;
    16582132
    1659         waitfor(f1, a1);     //Correct : 1 monitor case
    1660         waitfor(f2, a1, b1); //Correct : 2 monitor case
    1661         waitfor(f3, a1);     //Correct : non-mutex arguments are ignored
    1662         waitfor(f1, *ap);    //Correct : expression as argument
    1663 
    1664         waitfor(f1, a1, b1); //Incorrect : Too many mutex arguments
    1665         waitfor(f2, a1);     //Incorrect : Too few mutex arguments
    1666         waitfor(f2, a1, a2); //Incorrect : Mutex arguments don't match
    1667         waitfor(f1, 1);      //Incorrect : 1 not a mutex argument
    1668         waitfor(f9, a1);     //Incorrect : f9 function does not exist
    1669         waitfor(*fp, a1 );   //Incorrect : fp not an identifier
    1670         waitfor(f4, a1);     //Incorrect : f4 ambiguous
    1671 
    1672         waitfor(f2, a1, b2); //Undefined behaviour : b2 not mutex
    1673 }
    1674 \end{cfacode}
     2133        waitfor(f1, a1);     // Correct : 1 monitor case
     2134        waitfor(f2, a1, b1); // Correct : 2 monitor case
     2135        waitfor(f3, a1);     // Correct : non-mutex arguments are ignored
     2136        waitfor(f1, *ap);    // Correct : expression as argument
     2137
     2138        waitfor(f1, a1, b1); // Incorrect : Too many mutex arguments
     2139        waitfor(f2, a1);     // Incorrect : Too few mutex arguments
     2140        waitfor(f2, a1, a2); // Incorrect : Mutex arguments don't match
     2141        waitfor(f1, 1);      // Incorrect : 1 not a mutex argument
     2142        waitfor(f9, a1);     // Incorrect : f9 function does not exist
     2143        waitfor(*fp, a1 );   // Incorrect : fp not an identifier
     2144        waitfor(f4, a1);     // Incorrect : f4 ambiguous
     2145
     2146        waitfor(f2, a1, b2); // Undefined behaviour : b2 not mutex
     2147}
     2148\end{cfa}
    16752149\end{figure}
    16762150
    1677 Finally, for added flexibility, \CFA supports constructing a complex \code{waitfor} statement using the \code{or}, \code{timeout} and \code{else}. Indeed, multiple \code{waitfor} clauses can be chained together using \code{or}; this chain forms a single statement that uses baton pass to any function that fits one of the function+monitor set passed in. To enable users to tell which accepted function executed, \code{waitfor}s are followed by a statement (including the null statement \code{;}) or a compound statement, which is executed after the clause is triggered. A \code{waitfor} chain can also be followed by a \code{timeout}, to signify an upper bound on the wait, or an \code{else}, to signify that the call should be non-blocking, which checks for a matching function call already arrived and otherwise continues. Any and all of these clauses can be preceded by a \code{when} condition to dynamically toggle the accept clauses on or off based on some current state. Listing \ref{lst:waitfor2} demonstrates several complex masks and some incorrect ones.
     2151Finally, for added flexibility, \CFA supports constructing a complex @waitfor@ statement using the @or@, @timeout@ and @else@.
     2152Indeed, multiple @waitfor@ clauses can be chained together using @or@; this chain forms a single statement that uses baton pass to any function that fits one of the function+monitor set passed in.
     2153To enable users to tell which accepted function executed, @waitfor@s are followed by a statement (including the null statement @;@) or a compound statement, which is executed after the clause is triggered.
     2154A @waitfor@ chain can also be followed by a @timeout@, to signify an upper bound on the wait, or an @else@, to signify that the call should be non-blocking, which checks for a matching function call already arrived and otherwise continues.
     2155Any and all of these clauses can be preceded by a @when@ condition to dynamically toggle the accept clauses on or off based on some current state.
     2156Figure~\ref{f:waitfor2} demonstrates several complex masks and some incorrect ones.
    16782157
    16792158\begin{figure}
    1680 \begin{cfacode}[caption={Various correct and incorrect uses of the or, else, and timeout clause around a waitfor statement},label={lst:waitfor2}]
     2159\lstset{language=CFA,deletedelim=**[is][]{`}{`}}
     2160\begin{cfa}
    16812161monitor A{};
    16822162
     
    16852165
    16862166void foo( A & mutex a, bool b, int t ) {
    1687         //Correct : blocking case
    1688         waitfor(f1, a);
    1689 
    1690         //Correct : block with statement
    1691         waitfor(f1, a) {
     2167        waitfor(f1, a);                                                 $\C{// Correct : blocking case}$
     2168
     2169        waitfor(f1, a) {                                                $\C{// Correct : block with statement}$
    16922170                sout | "f1" | endl;
    16932171        }
    1694 
    1695         //Correct : block waiting for f1 or f2
    1696         waitfor(f1, a) {
     2172        waitfor(f1, a) {                                                $\C{// Correct : block waiting for f1 or f2}$
    16972173                sout | "f1" | endl;
    16982174        } or waitfor(f2, a) {
    16992175                sout | "f2" | endl;
    17002176        }
    1701 
    1702         //Correct : non-blocking case
    1703         waitfor(f1, a); or else;
    1704 
    1705         //Correct : non-blocking case
    1706         waitfor(f1, a) {
     2177        waitfor(f1, a); or else;                                $\C{// Correct : non-blocking case}$
     2178
     2179        waitfor(f1, a) {                                                $\C{// Correct : non-blocking case}$
    17072180                sout | "blocked" | endl;
    17082181        } or else {
    17092182                sout | "didn't block" | endl;
    17102183        }
    1711 
    1712         //Correct : block at most 10 seconds
    1713         waitfor(f1, a) {
     2184        waitfor(f1, a) {                                                $\C{// Correct : block at most 10 seconds}$
    17142185                sout | "blocked" | endl;
    17152186        } or timeout( 10`s) {
    17162187                sout | "didn't block" | endl;
    17172188        }
    1718 
    1719         //Correct : block only if b == true
    1720         //if b == false, don't even make the call
     2189        // Correct : block only if b == true if b == false, don't even make the call
    17212190        when(b) waitfor(f1, a);
    17222191
    1723         //Correct : block only if b == true
    1724         //if b == false, make non-blocking call
     2192        // Correct : block only if b == true if b == false, make non-blocking call
    17252193        waitfor(f1, a); or when(!b) else;
    17262194
    1727         //Correct : block only of t > 1
     2195        // Correct : block only of t > 1
    17282196        waitfor(f1, a); or when(t > 1) timeout(t); or else;
    17292197
    1730         //Incorrect : timeout clause is dead code
     2198        // Incorrect : timeout clause is dead code
    17312199        waitfor(f1, a); or timeout(t); or else;
    17322200
    1733         //Incorrect : order must be
    1734         //waitfor [or waitfor... [or timeout] [or else]]
     2201        // Incorrect : order must be waitfor [or waitfor... [or timeout] [or else]]
    17352202        timeout(t); or waitfor(f1, a); or else;
    17362203}
    1737 \end{cfacode}
     2204\end{cfa}
     2205\caption{Correct and incorrect uses of the or, else, and timeout clause around a waitfor statement}
     2206\label{f:waitfor2}
    17382207\end{figure}
    17392208
     
    17432212% ======================================================================
    17442213% ======================================================================
    1745 An interesting use for the \code{waitfor} statement is destructor semantics. Indeed, the \code{waitfor} statement can accept any \code{mutex} routine, which includes the destructor (see section \ref{data}). However, with the semantics discussed until now, waiting for the destructor does not make any sense, since using an object after its destructor is called is undefined behaviour. The simplest approach is to disallow \code{waitfor} on a destructor. However, a more expressive approach is to flip ordering of execution when waiting for the destructor, meaning that waiting for the destructor allows the destructor to run after the current \code{mutex} routine, similarly to how a condition is signalled.
     2214An interesting use for the @waitfor@ statement is destructor semantics.
     2215Indeed, the @waitfor@ statement can accept any @mutex@ routine, which includes the destructor (see section \ref{data}).
     2216However, with the semantics discussed until now, waiting for the destructor does not make any sense, since using an object after its destructor is called is undefined behaviour.
     2217The simplest approach is to disallow @waitfor@ on a destructor.
     2218However, a more expressive approach is to flip ordering of execution when waiting for the destructor, meaning that waiting for the destructor allows the destructor to run after the current @mutex@ routine, similarly to how a condition is signalled.
    17462219\begin{figure}
    1747 \begin{cfacode}[caption={Example of an executor which executes action in series until the destructor is called.},label={lst:dtor-order}]
     2220\begin{cfa}[caption={Example of an executor which executes action in series until the destructor is called.},label={f:dtor-order}]
    17482221monitor Executer {};
    17492222struct  Action;
     
    17592232        }
    17602233}
    1761 \end{cfacode}
     2234\end{cfa}
    17622235\end{figure}
    1763 For example, listing \ref{lst:dtor-order} shows an example of an executor with an infinite loop, which waits for the destructor to break out of this loop. Switching the semantic meaning introduces an idiomatic way to terminate a task and/or wait for its termination via destruction.
     2236For example, listing \ref{f:dtor-order} shows an example of an executor with an infinite loop, which waits for the destructor to break out of this loop.
     2237Switching the semantic meaning introduces an idiomatic way to terminate a task and/or wait for its termination via destruction.
    17642238
    17652239
     
    17722246% #       #     # #     # #     # ####### ####### ####### ####### ###  #####  #     #
    17732247\section{Parallelism}
    1774 Historically, computer performance was about processor speeds and instruction counts. However, with heat dissipation being a direct consequence of speed increase, parallelism has become the new source for increased performance~\cite{Sutter05, Sutter05b}. In this decade, it is no longer reasonable to create a high-performance application without caring about parallelism. Indeed, parallelism is an important aspect of performance and more specifically throughput and hardware utilization. The lowest-level approach of parallelism is to use \textbf{kthread} in combination with semantics like \code{fork}, \code{join}, etc. However, since these have significant costs and limitations, \textbf{kthread} are now mostly used as an implementation tool rather than a user oriented one. There are several alternatives to solve these issues that all have strengths and weaknesses. While there are many variations of the presented paradigms, most of these variations do not actually change the guarantees or the semantics, they simply move costs in order to achieve better performance for certain workloads.
     2248Historically, computer performance was about processor speeds and instruction counts.
     2249However, with heat dissipation being a direct consequence of speed increase, parallelism has become the new source for increased performance~\cite{Sutter05, Sutter05b}.
     2250In this decade, it is no longer reasonable to create a high-performance application without caring about parallelism.
     2251Indeed, parallelism is an important aspect of performance and more specifically throughput and hardware utilization.
     2252The lowest-level approach of parallelism is to use \textbf{kthread} in combination with semantics like @fork@, @join@, \etc.
     2253However, since these have significant costs and limitations, \textbf{kthread} are now mostly used as an implementation tool rather than a user oriented one.
     2254There are several alternatives to solve these issues that all have strengths and weaknesses.
     2255While there are many variations of the presented paradigms, most of these variations do not actually change the guarantees or the semantics, they simply move costs in order to achieve better performance for certain workloads.
    17752256
    17762257\section{Paradigms}
    17772258\subsection{User-Level Threads}
    1778 A direct improvement on the \textbf{kthread} approach is to use \textbf{uthread}. These threads offer most of the same features that the operating system already provides but can be used on a much larger scale. This approach is the most powerful solution as it allows all the features of multithreading, while removing several of the more expensive costs of kernel threads. The downside is that almost none of the low-level threading problems are hidden; users still have to think about data races, deadlocks and synchronization issues. These issues can be somewhat alleviated by a concurrency toolkit with strong guarantees, but the parallelism toolkit offers very little to reduce complexity in itself.
     2259A direct improvement on the \textbf{kthread} approach is to use \textbf{uthread}.
     2260These threads offer most of the same features that the operating system already provides but can be used on a much larger scale.
     2261This approach is the most powerful solution as it allows all the features of multithreading, while removing several of the more expensive costs of kernel threads.
     2262The downside is that almost none of the low-level threading problems are hidden; users still have to think about data races, deadlocks and synchronization issues.
     2263These issues can be somewhat alleviated by a concurrency toolkit with strong guarantees, but the parallelism toolkit offers very little to reduce complexity in itself.
    17792264
    17802265Examples of languages that support \textbf{uthread} are Erlang~\cite{Erlang} and \uC~\cite{uC++book}.
    17812266
    17822267\subsection{Fibers : User-Level Threads Without Preemption} \label{fibers}
    1783 A popular variant of \textbf{uthread} is what is often referred to as \textbf{fiber}. However, \textbf{fiber} do not present meaningful semantic differences with \textbf{uthread}. The significant difference between \textbf{uthread} and \textbf{fiber} is the lack of \textbf{preemption} in the latter. Advocates of \textbf{fiber} list their high performance and ease of implementation as major strengths, but the performance difference between \textbf{uthread} and \textbf{fiber} is controversial, and the ease of implementation, while true, is a weak argument in the context of language design. Therefore this proposal largely ignores fibers.
     2268A popular variant of \textbf{uthread} is what is often referred to as \textbf{fiber}.
     2269However, \textbf{fiber} do not present meaningful semantic differences with \textbf{uthread}.
     2270The significant difference between \textbf{uthread} and \textbf{fiber} is the lack of \textbf{preemption} in the latter.
     2271Advocates of \textbf{fiber} list their high performance and ease of implementation as major strengths, but the performance difference between \textbf{uthread} and \textbf{fiber} is controversial, and the ease of implementation, while true, is a weak argument in the context of language design.
     2272Therefore this proposal largely ignores fibers.
    17842273
    17852274An example of a language that uses fibers is Go~\cite{Go}
    17862275
    17872276\subsection{Jobs and Thread Pools}
    1788 An approach on the opposite end of the spectrum is to base parallelism on \textbf{pool}. Indeed, \textbf{pool} offer limited flexibility but at the benefit of a simpler user interface. In \textbf{pool} based systems, users express parallelism as units of work, called jobs, and a dependency graph (either explicit or implicit) that ties them together. This approach means users need not worry about concurrency but significantly limit the interaction that can occur among jobs. Indeed, any \textbf{job} that blocks also block the underlying worker, which effectively means the CPU utilization, and therefore throughput, suffers noticeably. It can be argued that a solution to this problem is to use more workers than available cores. However, unless the number of jobs and the number of workers are comparable, having a significant number of blocked jobs always results in idles cores.
     2277An approach on the opposite end of the spectrum is to base parallelism on \textbf{pool}.
     2278Indeed, \textbf{pool} offer limited flexibility but at the benefit of a simpler user interface.
     2279In \textbf{pool} based systems, users express parallelism as units of work, called jobs, and a dependency graph (either explicit or implicit) that ties them together.
     2280This approach means users need not worry about concurrency but significantly limit the interaction that can occur among jobs.
     2281Indeed, any \textbf{job} that blocks also block the underlying worker, which effectively means the CPU utilization, and therefore throughput, suffers noticeably.
     2282It can be argued that a solution to this problem is to use more workers than available cores.
     2283However, unless the number of jobs and the number of workers are comparable, having a significant number of blocked jobs always results in idles cores.
    17892284
    17902285The gold standard of this implementation is Intel's TBB library~\cite{TBB}.
    17912286
    17922287\subsection{Paradigm Performance}
    1793 While the choice between the three paradigms listed above may have significant performance implications, it is difficult to pin down the performance implications of choosing a model at the language level. Indeed, in many situations one of these paradigms may show better performance but it all strongly depends on the workload. Having a large amount of mostly independent units of work to execute almost guarantees equivalent performance across paradigms and that the \textbf{pool}-based system has the best efficiency thanks to the lower memory overhead (i.e., no thread stack per job). However, interactions among jobs can easily exacerbate contention. User-level threads allow fine-grain context switching, which results in better resource utilization, but a context switch is more expensive and the extra control means users need to tweak more variables to get the desired performance. Finally, if the units of uninterrupted work are large, enough the paradigm choice is largely amortized by the actual work done.
     2288While the choice between the three paradigms listed above may have significant performance implications, it is difficult to pin down the performance implications of choosing a model at the language level.
     2289Indeed, in many situations one of these paradigms may show better performance but it all strongly depends on the workload.
     2290Having a large amount of mostly independent units of work to execute almost guarantees equivalent performance across paradigms and that the \textbf{pool}-based system has the best efficiency thanks to the lower memory overhead (\ie no thread stack per job).
     2291However, interactions among jobs can easily exacerbate contention.
     2292User-level threads allow fine-grain context switching, which results in better resource utilization, but a context switch is more expensive and the extra control means users need to tweak more variables to get the desired performance.
     2293Finally, if the units of uninterrupted work are large, enough the paradigm choice is largely amortized by the actual work done.
    17942294
    17952295\section{The \protect\CFA\ Kernel : Processors, Clusters and Threads}\label{kernel}
    1796 A \textbf{cfacluster} is a group of \textbf{kthread} executed in isolation. \textbf{uthread} are scheduled on the \textbf{kthread} of a given \textbf{cfacluster}, allowing organization between \textbf{uthread} and \textbf{kthread}. It is important that \textbf{kthread} belonging to a same \textbf{cfacluster} have homogeneous settings, otherwise migrating a \textbf{uthread} from one \textbf{kthread} to the other can cause issues. A \textbf{cfacluster} also offers a pluggable scheduler that can optimize the workload generated by the \textbf{uthread}.
    1797 
    1798 \textbf{cfacluster} have not been fully implemented in the context of this paper. Currently \CFA only supports one \textbf{cfacluster}, the initial one.
     2296A \textbf{cfacluster} is a group of \textbf{kthread} executed in isolation. \textbf{uthread} are scheduled on the \textbf{kthread} of a given \textbf{cfacluster}, allowing organization between \textbf{uthread} and \textbf{kthread}.
     2297It is important that \textbf{kthread} belonging to a same \textbf{cfacluster} have homogeneous settings, otherwise migrating a \textbf{uthread} from one \textbf{kthread} to the other can cause issues.
     2298A \textbf{cfacluster} also offers a pluggable scheduler that can optimize the workload generated by the \textbf{uthread}.
     2299
     2300\textbf{cfacluster} have not been fully implemented in the context of this paper.
     2301Currently \CFA only supports one \textbf{cfacluster}, the initial one.
    17992302
    18002303\subsection{Future Work: Machine Setup}\label{machine}
    1801 While this was not done in the context of this paper, another important aspect of clusters is affinity. While many common desktop and laptop PCs have homogeneous CPUs, other devices often have more heterogeneous setups. For example, a system using \textbf{numa} configurations may benefit from users being able to tie clusters and/or kernel threads to certain CPU cores. OS support for CPU affinity is now common~\cite{affinityLinux, affinityWindows, affinityFreebsd, affinityNetbsd, affinityMacosx}, which means it is both possible and desirable for \CFA to offer an abstraction mechanism for portable CPU affinity.
     2304While this was not done in the context of this paper, another important aspect of clusters is affinity.
     2305While many common desktop and laptop PCs have homogeneous CPUs, other devices often have more heterogeneous setups.
     2306For example, a system using \textbf{numa} configurations may benefit from users being able to tie clusters and/or kernel threads to certain CPU cores.
     2307OS support for CPU affinity is now common~\cite{affinityLinux, affinityWindows, affinityFreebsd, affinityNetbsd, affinityMacosx}, which means it is both possible and desirable for \CFA to offer an abstraction mechanism for portable CPU affinity.
    18022308
    18032309\subsection{Paradigms}\label{cfaparadigms}
    1804 Given these building blocks, it is possible to reproduce all three of the popular paradigms. Indeed, \textbf{uthread} is the default paradigm in \CFA. However, disabling \textbf{preemption} on the \textbf{cfacluster} means \textbf{cfathread} effectively become \textbf{fiber}. Since several \textbf{cfacluster} with different scheduling policy can coexist in the same application, this allows \textbf{fiber} and \textbf{uthread} to coexist in the runtime of an application. Finally, it is possible to build executors for thread pools from \textbf{uthread} or \textbf{fiber}, which includes specialized jobs like actors~\cite{Actors}.
     2310Given these building blocks, it is possible to reproduce all three of the popular paradigms.
     2311Indeed, \textbf{uthread} is the default paradigm in \CFA.
     2312However, disabling \textbf{preemption} on the \textbf{cfacluster} means \textbf{cfathread} effectively become \textbf{fiber}.
     2313Since several \textbf{cfacluster} with different scheduling policy can coexist in the same application, this allows \textbf{fiber} and \textbf{uthread} to coexist in the runtime of an application.
     2314Finally, it is possible to build executors for thread pools from \textbf{uthread} or \textbf{fiber}, which includes specialized jobs like actors~\cite{Actors}.
    18052315
    18062316
    18072317
    18082318\section{Behind the Scenes}
    1809 There are several challenges specific to \CFA when implementing concurrency. These challenges are a direct result of \textbf{bulk-acq} and loose object definitions. These two constraints are the root cause of most design decisions in the implementation. Furthermore, to avoid contention from dynamically allocating memory in a concurrent environment, the internal-scheduling design is (almost) entirely free of mallocs. This approach avoids the chicken and egg problem~\cite{Chicken} of having a memory allocator that relies on the threading system and a threading system that relies on the runtime. This extra goal means that memory management is a constant concern in the design of the system.
    1810 
    1811 The main memory concern for concurrency is queues. All blocking operations are made by parking threads onto queues and all queues are designed with intrusive nodes, where each node has pre-allocated link fields for chaining, to avoid the need for memory allocation. Since several concurrency operations can use an unbound amount of memory (depending on \textbf{bulk-acq}), statically defining information in the intrusive fields of threads is insufficient.The only way to use a variable amount of memory without requiring memory allocation is to pre-allocate large buffers of memory eagerly and store the information in these buffers. Conveniently, the call stack fits that description and is easy to use, which is why it is used heavily in the implementation of internal scheduling, particularly variable-length arrays. Since stack allocation is based on scopes, the first step of the implementation is to identify the scopes that are available to store the information, and which of these can have a variable-length array. The threads and the condition both have a fixed amount of memory, while \code{mutex} routines and blocking calls allow for an unbound amount, within the stack size.
     2319There are several challenges specific to \CFA when implementing concurrency.
     2320These challenges are a direct result of \textbf{bulk-acq} and loose object definitions.
     2321These two constraints are the root cause of most design decisions in the implementation.
     2322Furthermore, to avoid contention from dynamically allocating memory in a concurrent environment, the internal-scheduling design is (almost) entirely free of mallocs.
     2323This approach avoids the chicken and egg problem~\cite{Chicken} of having a memory allocator that relies on the threading system and a threading system that relies on the runtime.
     2324This extra goal means that memory management is a constant concern in the design of the system.
     2325
     2326The main memory concern for concurrency is queues.
     2327All blocking operations are made by parking threads onto queues and all queues are designed with intrusive nodes, where each node has pre-allocated link fields for chaining, to avoid the need for memory allocation.
     2328Since several concurrency operations can use an unbound amount of memory (depending on \textbf{bulk-acq}), statically defining information in the intrusive fields of threads is insufficient.The only way to use a variable amount of memory without requiring memory allocation is to pre-allocate large buffers of memory eagerly and store the information in these buffers.
     2329Conveniently, the call stack fits that description and is easy to use, which is why it is used heavily in the implementation of internal scheduling, particularly variable-length arrays.
     2330Since stack allocation is based on scopes, the first step of the implementation is to identify the scopes that are available to store the information, and which of these can have a variable-length array.
     2331The threads and the condition both have a fixed amount of memory, while @mutex@ routines and blocking calls allow for an unbound amount, within the stack size.
    18122332
    18132333Note that since the major contributions of this paper are extending monitor semantics to \textbf{bulk-acq} and loose object definitions, any challenges that are not resulting of these characteristics of \CFA are considered as solved problems and therefore not discussed.
     
    18192339% ======================================================================
    18202340
    1821 The first step towards the monitor implementation is simple \code{mutex} routines. In the single monitor case, mutual-exclusion is done using the entry/exit procedure in listing \ref{lst:entry1}. The entry/exit procedures do not have to be extended to support multiple monitors. Indeed it is sufficient to enter/leave monitors one-by-one as long as the order is correct to prevent deadlock~\cite{Havender68}. In \CFA, ordering of monitor acquisition relies on memory ordering. This approach is sufficient because all objects are guaranteed to have distinct non-overlapping memory layouts and mutual-exclusion for a monitor is only defined for its lifetime, meaning that destroying a monitor while it is acquired is undefined behaviour. When a mutex call is made, the concerned monitors are aggregated into a variable-length pointer array and sorted based on pointer values. This array persists for the entire duration of the mutual-exclusion and its ordering reused extensively.
     2341The first step towards the monitor implementation is simple @mutex@ routines.
     2342In the single monitor case, mutual-exclusion is done using the entry/exit procedure in listing \ref{f:entry1}.
     2343The entry/exit procedures do not have to be extended to support multiple monitors.
     2344Indeed it is sufficient to enter/leave monitors one-by-one as long as the order is correct to prevent deadlock~\cite{Havender68}.
     2345In \CFA, ordering of monitor acquisition relies on memory ordering.
     2346This approach is sufficient because all objects are guaranteed to have distinct non-overlapping memory layouts and mutual-exclusion for a monitor is only defined for its lifetime, meaning that destroying a monitor while it is acquired is undefined behaviour.
     2347When a mutex call is made, the concerned monitors are aggregated into a variable-length pointer array and sorted based on pointer values.
     2348This array persists for the entire duration of the mutual-exclusion and its ordering reused extensively.
    18222349\begin{figure}
    18232350\begin{multicols}{2}
    18242351Entry
    1825 \begin{pseudo}
     2352\begin{cfa}
    18262353if monitor is free
    18272354        enter
     
    18312358        block
    18322359increment recursions
    1833 \end{pseudo}
     2360\end{cfa}
    18342361\columnbreak
    18352362Exit
    1836 \begin{pseudo}
     2363\begin{cfa}
    18372364decrement recursion
    18382365if recursion == 0
    18392366        if entry queue not empty
    18402367                wake-up thread
    1841 \end{pseudo}
     2368\end{cfa}
    18422369\end{multicols}
    1843 \begin{pseudo}[caption={Initial entry and exit routine for monitors},label={lst:entry1}]
    1844 \end{pseudo}
     2370\begin{cfa}[caption={Initial entry and exit routine for monitors},label={f:entry1}]
     2371\end{cfa}
    18452372\end{figure}
    18462373
    18472374\subsection{Details: Interaction with polymorphism}
    1848 Depending on the choice of semantics for when monitor locks are acquired, interaction between monitors and \CFA's concept of polymorphism can be more complex to support. However, it is shown that entry-point locking solves most of the issues.
    1849 
    1850 First of all, interaction between \code{otype} polymorphism (see Section~\ref{s:ParametricPolymorphism}) and monitors is impossible since monitors do not support copying. Therefore, the main question is how to support \code{dtype} polymorphism. It is important to present the difference between the two acquiring options: \textbf{callsite-locking} and entry-point locking, i.e., acquiring the monitors before making a mutex routine-call or as the first operation of the mutex routine-call. For example:
    1851 \begin{table}[H]
     2375Depending on the choice of semantics for when monitor locks are acquired, interaction between monitors and \CFA's concept of polymorphism can be more complex to support.
     2376However, it is shown that entry-point locking solves most of the issues.
     2377
     2378First of all, interaction between @otype@ polymorphism (see Section~\ref{s:ParametricPolymorphism}) and monitors is impossible since monitors do not support copying.
     2379Therefore, the main question is how to support @dtype@ polymorphism.
     2380It is important to present the difference between the two acquiring options: \textbf{callsite-locking} and entry-point locking, \ie acquiring the monitors before making a mutex routine-call or as the first operation of the mutex routine-call.
     2381For example:
     2382\begin{table}
    18522383\begin{center}
    18532384\begin{tabular}{|c|c|c|}
    18542385Mutex & \textbf{callsite-locking} & \textbf{entry-point-locking} \\
    1855 call & pseudo-code & pseudo-code \\
     2386call & cfa-code & cfa-code \\
    18562387\hline
    1857 \begin{cfacode}[tabsize=3]
     2388\begin{cfa}[tabsize=3]
    18582389void foo(monitor& mutex a){
    18592390
    1860         //Do Work
     2391        // Do Work
    18612392        //...
    18622393
     
    18692400
    18702401}
    1871 \end{cfacode} & \begin{pseudo}[tabsize=3]
     2402\end{cfa} & \begin{cfa}[tabsize=3]
    18722403foo(& a) {
    18732404
    1874         //Do Work
     2405        // Do Work
    18752406        //...
    18762407
     
    18832414        release(a);
    18842415}
    1885 \end{pseudo} & \begin{pseudo}[tabsize=3]
     2416\end{cfa} & \begin{cfa}[tabsize=3]
    18862417foo(& a) {
    18872418        acquire(a);
    1888         //Do Work
     2419        // Do Work
    18892420        //...
    18902421        release(a);
     
    18972428
    18982429}
    1899 \end{pseudo}
     2430\end{cfa}
    19002431\end{tabular}
    19012432\end{center}
     
    19042435\end{table}
    19052436
    1906 Note the \code{mutex} keyword relies on the type system, which means that in cases where a generic monitor-routine is desired, writing the mutex routine is possible with the proper trait, e.g.:
    1907 \begin{cfacode}
    1908 //Incorrect: T may not be monitor
     2437Note the @mutex@ keyword relies on the type system, which means that in cases where a generic monitor-routine is desired, writing the mutex routine is possible with the proper trait, \eg:
     2438\begin{cfa}
     2439// Incorrect: T may not be monitor
    19092440forall(dtype T)
    19102441void foo(T * mutex t);
    19112442
    1912 //Correct: this function only works on monitors (any monitor)
     2443// Correct: this function only works on monitors (any monitor)
    19132444forall(dtype T | is_monitor(T))
    19142445void bar(T * mutex t));
    1915 \end{cfacode}
    1916 
    1917 Both entry point and \textbf{callsite-locking} are feasible implementations. The current \CFA implementation uses entry-point locking because it requires less work when using \textbf{raii}, effectively transferring the burden of implementation to object construction/destruction. It is harder to use \textbf{raii} for call-site locking, as it does not necessarily have an existing scope that matches exactly the scope of the mutual exclusion, i.e., the function body. For example, the monitor call can appear in the middle of an expression. Furthermore, entry-point locking requires less code generation since any useful routine is called multiple times but there is only one entry point for many call sites.
     2446\end{cfa}
     2447
     2448Both entry point and \textbf{callsite-locking} are feasible implementations.
     2449The current \CFA implementation uses entry-point locking because it requires less work when using \textbf{raii}, effectively transferring the burden of implementation to object construction/destruction.
     2450It is harder to use \textbf{raii} for call-site locking, as it does not necessarily have an existing scope that matches exactly the scope of the mutual exclusion, \ie the function body.
     2451For example, the monitor call can appear in the middle of an expression.
     2452Furthermore, entry-point locking requires less code generation since any useful routine is called multiple times but there is only one entry point for many call sites.
    19182453
    19192454% ======================================================================
     
    19232458% ======================================================================
    19242459
    1925 Figure \ref{fig:system1} shows a high-level picture if the \CFA runtime system in regards to concurrency. Each component of the picture is explained in detail in the flowing sections.
     2460Figure \ref{fig:system1} shows a high-level picture if the \CFA runtime system in regards to concurrency.
     2461Each component of the picture is explained in detail in the flowing sections.
    19262462
    19272463\begin{figure}
     
    19342470
    19352471\subsection{Processors}
    1936 Parallelism in \CFA is built around using processors to specify how much parallelism is desired. \CFA processors are object wrappers around kernel threads, specifically \texttt{pthread}s in the current implementation of \CFA. Indeed, any parallelism must go through operating-system libraries. However, \textbf{uthread} are still the main source of concurrency, processors are simply the underlying source of parallelism. Indeed, processor \textbf{kthread} simply fetch a \textbf{uthread} from the scheduler and run it; they are effectively executers for user-threads. The main benefit of this approach is that it offers a well-defined boundary between kernel code and user code, for example, kernel thread quiescing, scheduling and interrupt handling. Processors internally use coroutines to take advantage of the existing context-switching semantics.
     2472Parallelism in \CFA is built around using processors to specify how much parallelism is desired. \CFA processors are object wrappers around kernel threads, specifically @pthread@s in the current implementation of \CFA.
     2473Indeed, any parallelism must go through operating-system libraries.
     2474However, \textbf{uthread} are still the main source of concurrency, processors are simply the underlying source of parallelism.
     2475Indeed, processor \textbf{kthread} simply fetch a \textbf{uthread} from the scheduler and run it; they are effectively executers for user-threads.
     2476The main benefit of this approach is that it offers a well-defined boundary between kernel code and user code, for example, kernel thread quiescing, scheduling and interrupt handling.
     2477Processors internally use coroutines to take advantage of the existing context-switching semantics.
    19372478
    19382479\subsection{Stack Management}
    1939 One of the challenges of this system is to reduce the footprint as much as possible. Specifically, all \texttt{pthread}s created also have a stack created with them, which should be used as much as possible. Normally, coroutines also create their own stack to run on, however, in the case of the coroutines used for processors, these coroutines run directly on the \textbf{kthread} stack, effectively stealing the processor stack. The exception to this rule is the Main Processor, i.e., the initial \textbf{kthread} that is given to any program. In order to respect C user expectations, the stack of the initial kernel thread, the main stack of the program, is used by the main user thread rather than the main processor, which can grow very large.
     2480One of the challenges of this system is to reduce the footprint as much as possible.
     2481Specifically, all @pthread@s created also have a stack created with them, which should be used as much as possible.
     2482Normally, coroutines also create their own stack to run on, however, in the case of the coroutines used for processors, these coroutines run directly on the \textbf{kthread} stack, effectively stealing the processor stack.
     2483The exception to this rule is the Main Processor, \ie the initial \textbf{kthread} that is given to any program.
     2484In order to respect C user expectations, the stack of the initial kernel thread, the main stack of the program, is used by the main user thread rather than the main processor, which can grow very large.
    19402485
    19412486\subsection{Context Switching}
    1942 As mentioned in section \ref{coroutine}, coroutines are a stepping stone for implementing threading, because they share the same mechanism for context-switching between different stacks. To improve performance and simplicity, context-switching is implemented using the following assumption: all context-switches happen inside a specific function call. This assumption means that the context-switch only has to copy the callee-saved registers onto the stack and then switch the stack registers with the ones of the target coroutine/thread. Note that the instruction pointer can be left untouched since the context-switch is always inside the same function. Threads, however, do not context-switch between each other directly. They context-switch to the scheduler. This method is called a 2-step context-switch and has the advantage of having a clear distinction between user code and the kernel where scheduling and other system operations happen. Obviously, this doubles the context-switch cost because threads must context-switch to an intermediate stack. The alternative 1-step context-switch uses the stack of the ``from'' thread to schedule and then context-switches directly to the ``to'' thread. However, the performance of the 2-step context-switch is still superior to a \code{pthread_yield} (see section \ref{results}). Additionally, for users in need for optimal performance, it is important to note that having a 2-step context-switch as the default does not prevent \CFA from offering a 1-step context-switch (akin to the Microsoft \code{SwitchToFiber}~\cite{switchToWindows} routine). This option is not currently present in \CFA, but the changes required to add it are strictly additive.
     2487As mentioned in section \ref{coroutine}, coroutines are a stepping stone for implementing threading, because they share the same mechanism for context-switching between different stacks.
     2488To improve performance and simplicity, context-switching is implemented using the following assumption: all context-switches happen inside a specific function call.
     2489This assumption means that the context-switch only has to copy the callee-saved registers onto the stack and then switch the stack registers with the ones of the target coroutine/thread.
     2490Note that the instruction pointer can be left untouched since the context-switch is always inside the same function.
     2491Threads, however, do not context-switch between each other directly.
     2492They context-switch to the scheduler.
     2493This method is called a 2-step context-switch and has the advantage of having a clear distinction between user code and the kernel where scheduling and other system operations happen.
     2494Obviously, this doubles the context-switch cost because threads must context-switch to an intermediate stack.
     2495The alternative 1-step context-switch uses the stack of the ``from'' thread to schedule and then context-switches directly to the ``to'' thread.
     2496However, the performance of the 2-step context-switch is still superior to a @pthread_yield@ (see section \ref{results}).
     2497Additionally, for users in need for optimal performance, it is important to note that having a 2-step context-switch as the default does not prevent \CFA from offering a 1-step context-switch (akin to the Microsoft @SwitchToFiber@~\cite{switchToWindows} routine).
     2498This option is not currently present in \CFA, but the changes required to add it are strictly additive.
    19432499
    19442500\subsection{Preemption} \label{preemption}
    1945 Finally, an important aspect for any complete threading system is preemption. As mentioned in section \ref{basics}, preemption introduces an extra degree of uncertainty, which enables users to have multiple threads interleave transparently, rather than having to cooperate among threads for proper scheduling and CPU distribution. Indeed, preemption is desirable because it adds a degree of isolation among threads. In a fully cooperative system, any thread that runs a long loop can starve other threads, while in a preemptive system, starvation can still occur but it does not rely on every thread having to yield or block on a regular basis, which reduces significantly a programmer burden. Obviously, preemption is not optimal for every workload. However any preemptive system can become a cooperative system by making the time slices extremely large. Therefore, \CFA uses a preemptive threading system.
    1946 
    1947 Preemption in \CFA\footnote{Note that the implementation of preemption is strongly tied with the underlying threading system. For this reason, only the Linux implementation is cover, \CFA does not run on Windows at the time of writting} is based on kernel timers, which are used to run a discrete-event simulation. Every processor keeps track of the current time and registers an expiration time with the preemption system. When the preemption system receives a change in preemption, it inserts the time in a sorted order and sets a kernel timer for the closest one, effectively stepping through preemption events on each signal sent by the timer. These timers use the Linux signal {\tt SIGALRM}, which is delivered to the process rather than the kernel-thread. This results in an implementation problem, because when delivering signals to a process, the kernel can deliver the signal to any kernel thread for which the signal is not blocked, i.e.:
     2501Finally, an important aspect for any complete threading system is preemption.
     2502As mentioned in section \ref{basics}, preemption introduces an extra degree of uncertainty, which enables users to have multiple threads interleave transparently, rather than having to cooperate among threads for proper scheduling and CPU distribution.
     2503Indeed, preemption is desirable because it adds a degree of isolation among threads.
     2504In a fully cooperative system, any thread that runs a long loop can starve other threads, while in a preemptive system, starvation can still occur but it does not rely on every thread having to yield or block on a regular basis, which reduces significantly a programmer burden.
     2505Obviously, preemption is not optimal for every workload.
     2506However any preemptive system can become a cooperative system by making the time slices extremely large.
     2507Therefore, \CFA uses a preemptive threading system.
     2508
     2509Preemption in \CFA\footnote{Note that the implementation of preemption is strongly tied with the underlying threading system.
     2510For this reason, only the Linux implementation is cover, \CFA does not run on Windows at the time of writting} is based on kernel timers, which are used to run a discrete-event simulation.
     2511Every processor keeps track of the current time and registers an expiration time with the preemption system.
     2512When the preemption system receives a change in preemption, it inserts the time in a sorted order and sets a kernel timer for the closest one, effectively stepping through preemption events on each signal sent by the timer.
     2513These timers use the Linux signal {\tt SIGALRM}, which is delivered to the process rather than the kernel-thread.
     2514This results in an implementation problem, because when delivering signals to a process, the kernel can deliver the signal to any kernel thread for which the signal is not blocked, \ie:
    19482515\begin{quote}
    1949 A process-directed signal may be delivered to any one of the threads that does not currently have the signal blocked. If more than one of the threads has the signal unblocked, then the kernel chooses an arbitrary thread to which to deliver the signal.
     2516A process-directed signal may be delivered to any one of the threads that does not currently have the signal blocked.
     2517If more than one of the threads has the signal unblocked, then the kernel chooses an arbitrary thread to which to deliver the signal.
    19502518SIGNAL(7) - Linux Programmer's Manual
    19512519\end{quote}
    19522520For the sake of simplicity, and in order to prevent the case of having two threads receiving alarms simultaneously, \CFA programs block the {\tt SIGALRM} signal on every kernel thread except one.
    19532521
    1954 Now because of how involuntary context-switches are handled, the kernel thread handling {\tt SIGALRM} cannot also be a processor thread. Hence, involuntary context-switching is done by sending signal {\tt SIGUSR1} to the corresponding proces\-sor and having the thread yield from inside the signal handler. This approach effectively context-switches away from the signal handler back to the kernel and the signal handler frame is eventually unwound when the thread is scheduled again. As a result, a signal handler can start on one kernel thread and terminate on a second kernel thread (but the same user thread). It is important to note that signal handlers save and restore signal masks because user-thread migration can cause a signal mask to migrate from one kernel thread to another. This behaviour is only a problem if all kernel threads, among which a user thread can migrate, differ in terms of signal masks\footnote{Sadly, official POSIX documentation is silent on what distinguishes ``async-signal-safe'' functions from other functions.}. However, since the kernel thread handling preemption requires a different signal mask, executing user threads on the kernel-alarm thread can cause deadlocks. For this reason, the alarm thread is in a tight loop around a system call to \code{sigwaitinfo}, requiring very little CPU time for preemption. One final detail about the alarm thread is how to wake it when additional communication is required (e.g., on thread termination). This unblocking is also done using {\tt SIGALRM}, but sent through the \code{pthread_sigqueue}. Indeed, \code{sigwait} can differentiate signals sent from \code{pthread_sigqueue} from signals sent from alarms or the kernel.
     2522Now because of how involuntary context-switches are handled, the kernel thread handling {\tt SIGALRM} cannot also be a processor thread.
     2523Hence, involuntary context-switching is done by sending signal {\tt SIGUSR1} to the corresponding proces\-sor and having the thread yield from inside the signal handler.
     2524This approach effectively context-switches away from the signal handler back to the kernel and the signal handler frame is eventually unwound when the thread is scheduled again.
     2525As a result, a signal handler can start on one kernel thread and terminate on a second kernel thread (but the same user thread).
     2526It is important to note that signal handlers save and restore signal masks because user-thread migration can cause a signal mask to migrate from one kernel thread to another.
     2527This behaviour is only a problem if all kernel threads, among which a user thread can migrate, differ in terms of signal masks\footnote{Sadly, official POSIX documentation is silent on what distinguishes ``async-signal-safe'' functions from other functions.}.
     2528However, since the kernel thread handling preemption requires a different signal mask, executing user threads on the kernel-alarm thread can cause deadlocks.
     2529For this reason, the alarm thread is in a tight loop around a system call to @sigwaitinfo@, requiring very little CPU time for preemption.
     2530One final detail about the alarm thread is how to wake it when additional communication is required (\eg on thread termination).
     2531This unblocking is also done using {\tt SIGALRM}, but sent through the @pthread_sigqueue@.
     2532Indeed, @sigwait@ can differentiate signals sent from @pthread_sigqueue@ from signals sent from alarms or the kernel.
    19552533
    19562534\subsection{Scheduler}
    1957 Finally, an aspect that was not mentioned yet is the scheduling algorithm. Currently, the \CFA scheduler uses a single ready queue for all processors, which is the simplest approach to scheduling. Further discussion on scheduling is present in section \ref{futur:sched}.
     2535Finally, an aspect that was not mentioned yet is the scheduling algorithm.
     2536Currently, the \CFA scheduler uses a single ready queue for all processors, which is the simplest approach to scheduling.
     2537Further discussion on scheduling is present in section \ref{futur:sched}.
    19582538
    19592539% ======================================================================
     
    19642544The following figure is the traditional illustration of a monitor (repeated from page~\pageref{fig:ClassicalMonitor} for convenience):
    19652545
    1966 \begin{figure}[H]
     2546\begin{figure}
    19672547\begin{center}
    19682548{\resizebox{0.4\textwidth}{!}{\input{monitor}}}
     
    19712551\end{figure}
    19722552
    1973 This picture has several components, the two most important being the entry queue and the AS-stack. The entry queue is an (almost) FIFO list where threads waiting to enter are parked, while the acceptor/signaller (AS) stack is a FILO list used for threads that have been signalled or otherwise marked as running next.
    1974 
    1975 For \CFA, this picture does not have support for blocking multiple monitors on a single condition. To support \textbf{bulk-acq} two changes to this picture are required. First, it is no longer helpful to attach the condition to \emph{a single} monitor. Secondly, the thread waiting on the condition has to be separated across multiple monitors, seen in figure \ref{fig:monitor_cfa}.
    1976 
    1977 \begin{figure}[H]
     2553This picture has several components, the two most important being the entry queue and the AS-stack.
     2554The entry queue is an (almost) FIFO list where threads waiting to enter are parked, while the acceptor/signaller (AS) stack is a FILO list used for threads that have been signalled or otherwise marked as running next.
     2555
     2556For \CFA, this picture does not have support for blocking multiple monitors on a single condition.
     2557To support \textbf{bulk-acq} two changes to this picture are required.
     2558First, it is no longer helpful to attach the condition to \emph{a single} monitor.
     2559Secondly, the thread waiting on the condition has to be separated across multiple monitors, seen in figure \ref{fig:monitor_cfa}.
     2560
     2561\begin{figure}
    19782562\begin{center}
    19792563{\resizebox{0.8\textwidth}{!}{\input{int_monitor}}}
     
    19832567\end{figure}
    19842568
    1985 This picture and the proper entry and leave algorithms (see listing \ref{lst:entry2}) is the fundamental implementation of internal scheduling. Note that when a thread is moved from the condition to the AS-stack, it is conceptually split into N pieces, where N is the number of monitors specified in the parameter list. The thread is woken up when all the pieces have popped from the AS-stacks and made active. In this picture, the threads are split into halves but this is only because there are two monitors. For a specific signalling operation every monitor needs a piece of thread on its AS-stack.
    1986 
    1987 \begin{figure}[b]
     2569This picture and the proper entry and leave algorithms (see listing \ref{f:entry2}) is the fundamental implementation of internal scheduling.
     2570Note that when a thread is moved from the condition to the AS-stack, it is conceptually split into N pieces, where N is the number of monitors specified in the parameter list.
     2571The thread is woken up when all the pieces have popped from the AS-stacks and made active.
     2572In this picture, the threads are split into halves but this is only because there are two monitors.
     2573For a specific signalling operation every monitor needs a piece of thread on its AS-stack.
     2574
     2575\begin{figure}
    19882576\begin{multicols}{2}
    19892577Entry
    1990 \begin{pseudo}
     2578\begin{cfa}
    19912579if monitor is free
    19922580        enter
     
    19972585increment recursion
    19982586
    1999 \end{pseudo}
     2587\end{cfa}
    20002588\columnbreak
    20012589Exit
    2002 \begin{pseudo}
     2590\begin{cfa}
    20032591decrement recursion
    20042592if recursion == 0
     
    20102598        if entry queue not empty
    20112599                wake-up thread
    2012 \end{pseudo}
     2600\end{cfa}
    20132601\end{multicols}
    2014 \begin{pseudo}[caption={Entry and exit routine for monitors with internal scheduling},label={lst:entry2}]
    2015 \end{pseudo}
     2602\begin{cfa}[caption={Entry and exit routine for monitors with internal scheduling},label={f:entry2}]
     2603\end{cfa}
    20162604\end{figure}
    20172605
    2018 The solution discussed in \ref{intsched} can be seen in the exit routine of listing \ref{lst:entry2}. Basically, the solution boils down to having a separate data structure for the condition queue and the AS-stack, and unconditionally transferring ownership of the monitors but only unblocking the thread when the last monitor has transferred ownership. This solution is deadlock safe as well as preventing any potential barging. The data structures used for the AS-stack are reused extensively for external scheduling, but in the case of internal scheduling, the data is allocated using variable-length arrays on the call stack of the \code{wait} and \code{signal_block} routines.
    2019 
    2020 \begin{figure}[H]
     2606The solution discussed in \ref{intsched} can be seen in the exit routine of listing \ref{f:entry2}.
     2607Basically, the solution boils down to having a separate data structure for the condition queue and the AS-stack, and unconditionally transferring ownership of the monitors but only unblocking the thread when the last monitor has transferred ownership.
     2608This solution is deadlock safe as well as preventing any potential barging.
     2609The data structures used for the AS-stack are reused extensively for external scheduling, but in the case of internal scheduling, the data is allocated using variable-length arrays on the call stack of the @wait@ and @signal_block@ routines.
     2610
     2611\begin{figure}
    20212612\begin{center}
    20222613{\resizebox{0.8\textwidth}{!}{\input{monitor_structs.pstex_t}}}
     
    20262617\end{figure}
    20272618
    2028 Figure \ref{fig:structs} shows a high-level representation of these data structures. The main idea behind them is that, a thread cannot contain an arbitrary number of intrusive ``next'' pointers for linking onto monitors. The \code{condition node} is the data structure that is queued onto a condition variable and, when signalled, the condition queue is popped and each \code{condition criterion} is moved to the AS-stack. Once all the criteria have been popped from their respective AS-stacks, the thread is woken up, which is what is shown in listing \ref{lst:entry2}.
     2619Figure \ref{fig:structs} shows a high-level representation of these data structures.
     2620The main idea behind them is that, a thread cannot contain an arbitrary number of intrusive ``next'' pointers for linking onto monitors.
     2621The @condition node@ is the data structure that is queued onto a condition variable and, when signalled, the condition queue is popped and each @condition criterion@ is moved to the AS-stack.
     2622Once all the criteria have been popped from their respective AS-stacks, the thread is woken up, which is what is shown in listing \ref{f:entry2}.
    20292623
    20302624% ======================================================================
     
    20332627% ======================================================================
    20342628% ======================================================================
    2035 Similarly to internal scheduling, external scheduling for multiple monitors relies on the idea that waiting-thread queues are no longer specific to a single monitor, as mentioned in section \ref{extsched}. For internal scheduling, these queues are part of condition variables, which are still unique for a given scheduling operation (i.e., no signal statement uses multiple conditions). However, in the case of external scheduling, there is no equivalent object which is associated with \code{waitfor} statements. This absence means the queues holding the waiting threads must be stored inside at least one of the monitors that is acquired. These monitors being the only objects that have sufficient lifetime and are available on both sides of the \code{waitfor} statement. This requires an algorithm to choose which monitor holds the relevant queue. It is also important that said algorithm be independent of the order in which users list parameters. The proposed algorithm is to fall back on monitor lock ordering (sorting by address) and specify that the monitor that is acquired first is the one with the relevant waiting queue. This assumes that the lock acquiring order is static for the lifetime of all concerned objects but that is a reasonable constraint.
     2629Similarly to internal scheduling, external scheduling for multiple monitors relies on the idea that waiting-thread queues are no longer specific to a single monitor, as mentioned in section \ref{extsched}.
     2630For internal scheduling, these queues are part of condition variables, which are still unique for a given scheduling operation (\ie no signal statement uses multiple conditions).
     2631However, in the case of external scheduling, there is no equivalent object which is associated with @waitfor@ statements.
     2632This absence means the queues holding the waiting threads must be stored inside at least one of the monitors that is acquired.
     2633These monitors being the only objects that have sufficient lifetime and are available on both sides of the @waitfor@ statement.
     2634This requires an algorithm to choose which monitor holds the relevant queue.
     2635It is also important that said algorithm be independent of the order in which users list parameters.
     2636The proposed algorithm is to fall back on monitor lock ordering (sorting by address) and specify that the monitor that is acquired first is the one with the relevant waiting queue.
     2637This assumes that the lock acquiring order is static for the lifetime of all concerned objects but that is a reasonable constraint.
    20362638
    20372639This algorithm choice has two consequences:
    20382640\begin{itemize}
    2039         \item The queue of the monitor with the lowest address is no longer a true FIFO queue because threads can be moved to the front of the queue. These queues need to contain a set of monitors for each of the waiting threads. Therefore, another thread whose set contains the same lowest address monitor but different lower priority monitors may arrive first but enter the critical section after a thread with the correct pairing.
    2040         \item The queue of the lowest priority monitor is both required and potentially unused. Indeed, since it is not known at compile time which monitor is the monitor which has the lowest address, every monitor needs to have the correct queues even though it is possible that some queues go unused for the entire duration of the program, for example if a monitor is only used in a specific pair.
     2641        \item The queue of the monitor with the lowest address is no longer a true FIFO queue because threads can be moved to the front of the queue.
     2642These queues need to contain a set of monitors for each of the waiting threads.
     2643Therefore, another thread whose set contains the same lowest address monitor but different lower priority monitors may arrive first but enter the critical section after a thread with the correct pairing.
     2644        \item The queue of the lowest priority monitor is both required and potentially unused.
     2645Indeed, since it is not known at compile time which monitor is the monitor which has the lowest address, every monitor needs to have the correct queues even though it is possible that some queues go unused for the entire duration of the program, for example if a monitor is only used in a specific pair.
    20412646\end{itemize}
    20422647Therefore, the following modifications need to be made to support external scheduling:
    20432648\begin{itemize}
    2044         \item The threads waiting on the entry queue need to keep track of which routine they are trying to enter, and using which set of monitors. The \code{mutex} routine already has all the required information on its stack, so the thread only needs to keep a pointer to that information.
    2045         \item The monitors need to keep a mask of acceptable routines. This mask contains for each acceptable routine, a routine pointer and an array of monitors to go with it. It also needs storage to keep track of which routine was accepted. Since this information is not specific to any monitor, the monitors actually contain a pointer to an integer on the stack of the waiting thread. Note that if a thread has acquired two monitors but executes a \code{waitfor} with only one monitor as a parameter, setting the mask of acceptable routines to both monitors will not cause any problems since the extra monitor will not change ownership regardless. This becomes relevant when \code{when} clauses affect the number of monitors passed to a \code{waitfor} statement.
    2046         \item The entry/exit routines need to be updated as shown in listing \ref{lst:entry3}.
     2649        \item The threads waiting on the entry queue need to keep track of which routine they are trying to enter, and using which set of monitors.
     2650The @mutex@ routine already has all the required information on its stack, so the thread only needs to keep a pointer to that information.
     2651        \item The monitors need to keep a mask of acceptable routines.
     2652This mask contains for each acceptable routine, a routine pointer and an array of monitors to go with it.
     2653It also needs storage to keep track of which routine was accepted.
     2654Since this information is not specific to any monitor, the monitors actually contain a pointer to an integer on the stack of the waiting thread.
     2655Note that if a thread has acquired two monitors but executes a @waitfor@ with only one monitor as a parameter, setting the mask of acceptable routines to both monitors will not cause any problems since the extra monitor will not change ownership regardless.
     2656This becomes relevant when @when@ clauses affect the number of monitors passed to a @waitfor@ statement.
     2657        \item The entry/exit routines need to be updated as shown in listing \ref{f:entry3}.
    20472658\end{itemize}
    20482659
    20492660\subsection{External Scheduling - Destructors}
    2050 Finally, to support the ordering inversion of destructors, the code generation needs to be modified to use a special entry routine. This routine is needed because of the storage requirements of the call order inversion. Indeed, when waiting for the destructors, storage is needed for the waiting context and the lifetime of said storage needs to outlive the waiting operation it is needed for. For regular \code{waitfor} statements, the call stack of the routine itself matches this requirement but it is no longer the case when waiting for the destructor since it is pushed on to the AS-stack for later. The \code{waitfor} semantics can then be adjusted correspondingly, as seen in listing \ref{lst:entry-dtor}
     2661Finally, to support the ordering inversion of destructors, the code generation needs to be modified to use a special entry routine.
     2662This routine is needed because of the storage requirements of the call order inversion.
     2663Indeed, when waiting for the destructors, storage is needed for the waiting context and the lifetime of said storage needs to outlive the waiting operation it is needed for.
     2664For regular @waitfor@ statements, the call stack of the routine itself matches this requirement but it is no longer the case when waiting for the destructor since it is pushed on to the AS-stack for later.
     2665The @waitfor@ semantics can then be adjusted correspondingly, as seen in listing \ref{f:entry-dtor}
    20512666
    20522667\begin{figure}
    20532668\begin{multicols}{2}
    20542669Entry
    2055 \begin{pseudo}
     2670\begin{cfa}
    20562671if monitor is free
    20572672        enter
     
    20642679        block
    20652680increment recursion
    2066 \end{pseudo}
     2681\end{cfa}
    20672682\columnbreak
    20682683Exit
    2069 \begin{pseudo}
     2684\begin{cfa}
    20702685decrement recursion
    20712686if recursion == 0
     
    20802695                wake-up thread
    20812696        endif
    2082 \end{pseudo}
     2697\end{cfa}
    20832698\end{multicols}
    2084 \begin{pseudo}[caption={Entry and exit routine for monitors with internal scheduling and external scheduling},label={lst:entry3}]
    2085 \end{pseudo}
     2699\begin{cfa}[caption={Entry and exit routine for monitors with internal scheduling and external scheduling},label={f:entry3}]
     2700\end{cfa}
    20862701\end{figure}
    20872702
     
    20892704\begin{multicols}{2}
    20902705Destructor Entry
    2091 \begin{pseudo}
     2706\begin{cfa}
    20922707if monitor is free
    20932708        enter
     
    21032718        wait
    21042719increment recursion
    2105 \end{pseudo}
     2720\end{cfa}
    21062721\columnbreak
    21072722Waitfor
    2108 \begin{pseudo}
     2723\begin{cfa}
    21092724if matching thread is already there
    21102725        if found destructor
     
    21262741block
    21272742return
    2128 \end{pseudo}
     2743\end{cfa}
    21292744\end{multicols}
    2130 \begin{pseudo}[caption={Pseudo code for the \code{waitfor} routine and the \code{mutex} entry routine for destructors},label={lst:entry-dtor}]
    2131 \end{pseudo}
     2745\begin{cfa}[caption={Pseudo code for the \protect\lstinline|waitfor| routine and the \protect\lstinline|mutex| entry routine for destructors},label={f:entry-dtor}]
     2746\end{cfa}
    21322747\end{figure}
    21332748
     
    21412756
    21422757\section{Threads As Monitors}
    2143 As it was subtly alluded in section \ref{threads}, \code{thread}s in \CFA are in fact monitors, which means that all monitor features are available when using threads. For example, here is a very simple two thread pipeline that could be used for a simulator of a game engine:
    2144 \begin{figure}[H]
    2145 \begin{cfacode}[caption={Toy simulator using \code{thread}s and \code{monitor}s.},label={lst:engine-v1}]
     2758As it was subtly alluded in section \ref{threads}, @thread@s in \CFA are in fact monitors, which means that all monitor features are available when using threads.
     2759For example, here is a very simple two thread pipeline that could be used for a simulator of a game engine:
     2760\begin{figure}
     2761\begin{cfa}[caption={Toy simulator using \protect\lstinline|thread|s and \protect\lstinline|monitor|s.},label={f:engine-v1}]
    21462762// Visualization declaration
    21472763thread Renderer {} renderer;
     
    21702786        }
    21712787}
    2172 \end{cfacode}
     2788\end{cfa}
    21732789\end{figure}
    2174 One of the obvious complaints of the previous code snippet (other than its toy-like simplicity) is that it does not handle exit conditions and just goes on forever. Luckily, the monitor semantics can also be used to clearly enforce a shutdown order in a concise manner:
    2175 \begin{figure}[H]
    2176 \begin{cfacode}[caption={Same toy simulator with proper termination condition.},label={lst:engine-v2}]
     2790One of the obvious complaints of the previous code snippet (other than its toy-like simplicity) is that it does not handle exit conditions and just goes on forever.
     2791Luckily, the monitor semantics can also be used to clearly enforce a shutdown order in a concise manner:
     2792\begin{figure}
     2793\begin{cfa}[caption={Same toy simulator with proper termination condition.},label={f:engine-v2}]
    21772794// Visualization declaration
    21782795thread Renderer {} renderer;
     
    22122829// Call destructor for simulator once simulator finishes
    22132830// Call destructor for renderer to signify shutdown
    2214 \end{cfacode}
     2831\end{cfa}
    22152832\end{figure}
    22162833
    22172834\section{Fibers \& Threads}
    2218 As mentioned in section \ref{preemption}, \CFA uses preemptive threads by default but can use fibers on demand. Currently, using fibers is done by adding the following line of code to the program~:
    2219 \begin{cfacode}
     2835As mentioned in section \ref{preemption}, \CFA uses preemptive threads by default but can use fibers on demand.
     2836Currently, using fibers is done by adding the following line of code to the program~:
     2837\begin{cfa}
    22202838unsigned int default_preemption() {
    22212839        return 0;
    22222840}
    2223 \end{cfacode}
    2224 This function is called by the kernel to fetch the default preemption rate, where 0 signifies an infinite time-slice, i.e., no preemption. However, once clusters are fully implemented, it will be possible to create fibers and \textbf{uthread} in the same system, as in listing \ref{lst:fiber-uthread}
     2841\end{cfa}
     2842This function is called by the kernel to fetch the default preemption rate, where 0 signifies an infinite time-slice, \ie no preemption.
     2843However, once clusters are fully implemented, it will be possible to create fibers and \textbf{uthread} in the same system, as in listing \ref{f:fiber-uthread}
    22252844\begin{figure}
    2226 \begin{cfacode}[caption={Using fibers and \textbf{uthread} side-by-side in \CFA},label={lst:fiber-uthread}]
    2227 //Cluster forward declaration
     2845\lstset{language=CFA,deletedelim=**[is][]{`}{`}}
     2846\begin{cfa}[caption={Using fibers and \textbf{uthread} side-by-side in \CFA},label={f:fiber-uthread}]
     2847// Cluster forward declaration
    22282848struct cluster;
    22292849
    2230 //Processor forward declaration
     2850// Processor forward declaration
    22312851struct processor;
    22322852
    2233 //Construct clusters with a preemption rate
     2853// Construct clusters with a preemption rate
    22342854void ?{}(cluster& this, unsigned int rate);
    2235 //Construct processor and add it to cluster
     2855// Construct processor and add it to cluster
    22362856void ?{}(processor& this, cluster& cluster);
    2237 //Construct thread and schedule it on cluster
     2857// Construct thread and schedule it on cluster
    22382858void ?{}(thread& this, cluster& cluster);
    22392859
    2240 //Declare two clusters
    2241 cluster thread_cluster = { 10`ms };                     //Preempt every 10 ms
    2242 cluster fibers_cluster = { 0 };                         //Never preempt
    2243 
    2244 //Construct 4 processors
     2860// Declare two clusters
     2861cluster thread_cluster = { 10`ms };                     // Preempt every 10 ms
     2862cluster fibers_cluster = { 0 };                         // Never preempt
     2863
     2864// Construct 4 processors
    22452865processor processors[4] = {
    22462866        //2 for the thread cluster
     
    22522872};
    22532873
    2254 //Declares thread
     2874// Declares thread
    22552875thread UThread {};
    22562876void ?{}(UThread& this) {
    2257         //Construct underlying thread to automatically
    2258         //be scheduled on the thread cluster
     2877        // Construct underlying thread to automatically
     2878        // be scheduled on the thread cluster
    22592879        (this){ thread_cluster }
    22602880}
     
    22622882void main(UThread & this);
    22632883
    2264 //Declares fibers
     2884// Declares fibers
    22652885thread Fiber {};
    22662886void ?{}(Fiber& this) {
    2267         //Construct underlying thread to automatically
    2268         //be scheduled on the fiber cluster
     2887        // Construct underlying thread to automatically
     2888        // be scheduled on the fiber cluster
    22692889        (this.__thread){ fibers_cluster }
    22702890}
    22712891
    22722892void main(Fiber & this);
    2273 \end{cfacode}
     2893\end{cfa}
    22742894\end{figure}
    22752895
     
    22812901% ======================================================================
    22822902\section{Machine Setup}
    2283 Table \ref{tab:machine} shows the characteristics of the machine used to run the benchmarks. All tests were made on this machine.
    2284 \begin{table}[H]
     2903Table \ref{tab:machine} shows the characteristics of the machine used to run the benchmarks.
     2904All tests were made on this machine.
     2905\begin{table}
    22852906\begin{center}
    22862907\begin{tabular}{| l | r | l | r |}
     
    23142935
    23152936\section{Micro Benchmarks}
    2316 All benchmarks are run using the same harness to produce the results, seen as the \code{BENCH()} macro in the following examples. This macro uses the following logic to benchmark the code:
    2317 \begin{pseudo}
     2937All benchmarks are run using the same harness to produce the results, seen as the @BENCH()@ macro in the following examples.
     2938This macro uses the following logic to benchmark the code:
     2939\begin{cfa}
    23182940#define BENCH(run, result) \
    23192941        before = gettime(); \
     
    23212943        after  = gettime(); \
    23222944        result = (after - before) / N;
    2323 \end{pseudo}
    2324 The method used to get time is \code{clock_gettime(CLOCK_THREAD_CPUTIME_ID);}. Each benchmark is using many iterations of a simple call to measure the cost of the call. The specific number of iterations depends on the specific benchmark.
     2945\end{cfa}
     2946The method used to get time is @clock_gettime(CLOCK_THREAD_CPUTIME_ID);@.
     2947Each benchmark is using many iterations of a simple call to measure the cost of the call.
     2948The specific number of iterations depends on the specific benchmark.
    23252949
    23262950\subsection{Context-Switching}
    2327 The first interesting benchmark is to measure how long context-switches take. The simplest approach to do this is to yield on a thread, which executes a 2-step context switch. Yielding causes the thread to context-switch to the scheduler and back, more precisely: from the \textbf{uthread} to the \textbf{kthread} then from the \textbf{kthread} back to the same \textbf{uthread} (or a different one in the general case). In order to make the comparison fair, coroutines also execute a 2-step context-switch by resuming another coroutine which does nothing but suspending in a tight loop, which is a resume/suspend cycle instead of a yield. Listing \ref{lst:ctx-switch} shows the code for coroutines and threads with the results in table \ref{tab:ctx-switch}. All omitted tests are functionally identical to one of these tests. The difference between coroutines and threads can be attributed to the cost of scheduling.
     2951The first interesting benchmark is to measure how long context-switches take.
     2952The simplest approach to do this is to yield on a thread, which executes a 2-step context switch.
     2953Yielding causes the thread to context-switch to the scheduler and back, more precisely: from the \textbf{uthread} to the \textbf{kthread} then from the \textbf{kthread} back to the same \textbf{uthread} (or a different one in the general case).
     2954In order to make the comparison fair, coroutines also execute a 2-step context-switch by resuming another coroutine which does nothing but suspending in a tight loop, which is a resume/suspend cycle instead of a yield.
     2955Figure~\ref{f:ctx-switch} shows the code for coroutines and threads with the results in table \ref{tab:ctx-switch}.
     2956All omitted tests are functionally identical to one of these tests.
     2957The difference between coroutines and threads can be attributed to the cost of scheduling.
    23282958\begin{figure}
    23292959\begin{multicols}{2}
    23302960\CFA Coroutines
    2331 \begin{cfacode}
     2961\begin{cfa}
    23322962coroutine GreatSuspender {};
    23332963void main(GreatSuspender& this) {
     
    23452975        printf("%llu\n", result);
    23462976}
    2347 \end{cfacode}
     2977\end{cfa}
    23482978\columnbreak
    23492979\CFA Threads
    2350 \begin{cfacode}
     2980\begin{cfa}
    23512981
    23522982
     
    23642994        printf("%llu\n", result);
    23652995}
    2366 \end{cfacode}
     2996\end{cfa}
    23672997\end{multicols}
    2368 \begin{cfacode}[caption={\CFA benchmark code used to measure context-switches for coroutines and threads.},label={lst:ctx-switch}]
    2369 \end{cfacode}
     2998\begin{cfa}[caption={\CFA benchmark code used to measure context-switches for coroutines and threads.},label={f:ctx-switch}]
     2999\end{cfa}
    23703000\end{figure}
    23713001
     
    23863016\end{tabular}
    23873017\end{center}
    2388 \caption{Context Switch comparison. All numbers are in nanoseconds(\si{\nano\second})}
     3018\caption{Context Switch comparison.
     3019All numbers are in nanoseconds(\si{\nano\second})}
    23893020\label{tab:ctx-switch}
    23903021\end{table}
    23913022
    23923023\subsection{Mutual-Exclusion}
    2393 The next interesting benchmark is to measure the overhead to enter/leave a critical-section. For monitors, the simplest approach is to measure how long it takes to enter and leave a monitor routine. Listing \ref{lst:mutex} shows the code for \CFA. To put the results in context, the cost of entering a non-inline function and the cost of acquiring and releasing a \code{pthread_mutex} lock is also measured. The results can be shown in table \ref{tab:mutex}.
     3024The next interesting benchmark is to measure the overhead to enter/leave a critical-section.
     3025For monitors, the simplest approach is to measure how long it takes to enter and leave a monitor routine.
     3026Figure~\ref{f:mutex} shows the code for \CFA.
     3027To put the results in context, the cost of entering a non-inline function and the cost of acquiring and releasing a @pthread_mutex@ lock is also measured.
     3028The results can be shown in table \ref{tab:mutex}.
    23943029
    23953030\begin{figure}
    2396 \begin{cfacode}[caption={\CFA benchmark code used to measure mutex routines.},label={lst:mutex}]
     3031\begin{cfa}[caption={\CFA benchmark code used to measure mutex routines.},label={f:mutex}]
    23973032monitor M {};
    23983033void __attribute__((noinline)) call( M & mutex m /*, m2, m3, m4*/ ) {}
     
    24083043        printf("%llu\n", result);
    24093044}
    2410 \end{cfacode}
     3045\end{cfa}
    24113046\end{figure}
    24123047
     
    24203055FetchAdd + FetchSub                             & 26            & 26            & 0    \\
    24213056Pthreads Mutex Lock                             & 31            & 31.86 & 0.99 \\
    2422 \uC \code{monitor} member routine               & 30            & 30            & 0    \\
    2423 \CFA \code{mutex} routine, 1 argument   & 41            & 41.57 & 0.9  \\
    2424 \CFA \code{mutex} routine, 2 argument   & 76            & 76.96 & 1.57 \\
    2425 \CFA \code{mutex} routine, 4 argument   & 145           & 146.68        & 3.85 \\
     3057\uC @monitor@ member routine            & 30            & 30            & 0    \\
     3058\CFA @mutex@ routine, 1 argument        & 41            & 41.57 & 0.9  \\
     3059\CFA @mutex@ routine, 2 argument        & 76            & 76.96 & 1.57 \\
     3060\CFA @mutex@ routine, 4 argument        & 145           & 146.68        & 3.85 \\
    24263061Java synchronized routine                       & 27            & 28.57 & 2.6  \\
    24273062\hline
    24283063\end{tabular}
    24293064\end{center}
    2430 \caption{Mutex routine comparison. All numbers are in nanoseconds(\si{\nano\second})}
     3065\caption{Mutex routine comparison.
     3066All numbers are in nanoseconds(\si{\nano\second})}
    24313067\label{tab:mutex}
    24323068\end{table}
    24333069
    24343070\subsection{Internal Scheduling}
    2435 The internal-scheduling benchmark measures the cost of waiting on and signalling a condition variable. Listing \ref{lst:int-sched} shows the code for \CFA, with results table \ref{tab:int-sched}. As with all other benchmarks, all omitted tests are functionally identical to one of these tests.
     3071The internal-scheduling benchmark measures the cost of waiting on and signalling a condition variable.
     3072Figure~\ref{f:int-sched} shows the code for \CFA, with results table \ref{tab:int-sched}.
     3073As with all other benchmarks, all omitted tests are functionally identical to one of these tests.
    24363074
    24373075\begin{figure}
    2438 \begin{cfacode}[caption={Benchmark code for internal scheduling},label={lst:int-sched}]
     3076\begin{cfa}[caption={Benchmark code for internal scheduling},label={f:int-sched}]
    24393077volatile int go = 0;
    24403078condition c;
     
    24663104        return do_wait(m1);
    24673105}
    2468 \end{cfacode}
     3106\end{cfa}
    24693107\end{figure}
    24703108
     
    24763114\hline
    24773115Pthreads Condition Variable                     & 5902.5        & 6093.29       & 714.78 \\
    2478 \uC \code{signal}                                       & 322           & 323   & 3.36   \\
    2479 \CFA \code{signal}, 1 \code{monitor}    & 352.5 & 353.11        & 3.66   \\
    2480 \CFA \code{signal}, 2 \code{monitor}    & 430           & 430.29        & 8.97   \\
    2481 \CFA \code{signal}, 4 \code{monitor}    & 594.5 & 606.57        & 18.33  \\
    2482 Java \code{notify}                              & 13831.5       & 15698.21      & 4782.3 \\
     3116\uC @signal@                                    & 322           & 323   & 3.36   \\
     3117\CFA @signal@, 1 @monitor@      & 352.5 & 353.11        & 3.66   \\
     3118\CFA @signal@, 2 @monitor@      & 430           & 430.29        & 8.97   \\
     3119\CFA @signal@, 4 @monitor@      & 594.5 & 606.57        & 18.33  \\
     3120Java @notify@                           & 13831.5       & 15698.21      & 4782.3 \\
    24833121\hline
    24843122\end{tabular}
    24853123\end{center}
    2486 \caption{Internal scheduling comparison. All numbers are in nanoseconds(\si{\nano\second})}
     3124\caption{Internal scheduling comparison.
     3125All numbers are in nanoseconds(\si{\nano\second})}
    24873126\label{tab:int-sched}
    24883127\end{table}
    24893128
    24903129\subsection{External Scheduling}
    2491 The Internal scheduling benchmark measures the cost of the \code{waitfor} statement (\code{_Accept} in \uC). Listing \ref{lst:ext-sched} shows the code for \CFA, with results in table \ref{tab:ext-sched}. As with all other benchmarks, all omitted tests are functionally identical to one of these tests.
     3130The Internal scheduling benchmark measures the cost of the @waitfor@ statement (@_Accept@ in \uC).
     3131Figure~\ref{f:ext-sched} shows the code for \CFA, with results in table \ref{tab:ext-sched}.
     3132As with all other benchmarks, all omitted tests are functionally identical to one of these tests.
    24923133
    24933134\begin{figure}
    2494 \begin{cfacode}[caption={Benchmark code for external scheduling},label={lst:ext-sched}]
     3135\begin{cfa}[caption={Benchmark code for external scheduling},label={f:ext-sched}]
    24953136volatile int go = 0;
    24963137monitor M {};
     
    25213162        return do_wait(m1);
    25223163}
    2523 \end{cfacode}
     3164\end{cfa}
    25243165\end{figure}
    25253166
     
    25303171\multicolumn{1}{c |}{} & \multicolumn{1}{c |}{ Median } &\multicolumn{1}{c |}{ Average } & \multicolumn{1}{c |}{ Standard Deviation} \\
    25313172\hline
    2532 \uC \code{Accept}                                       & 350           & 350.61        & 3.11  \\
    2533 \CFA \code{waitfor}, 1 \code{monitor}   & 358.5 & 358.36        & 3.82  \\
    2534 \CFA \code{waitfor}, 2 \code{monitor}   & 422           & 426.79        & 7.95  \\
    2535 \CFA \code{waitfor}, 4 \code{monitor}   & 579.5 & 585.46        & 11.25 \\
     3173\uC @Accept@                                    & 350           & 350.61        & 3.11  \\
     3174\CFA @waitfor@, 1 @monitor@     & 358.5 & 358.36        & 3.82  \\
     3175\CFA @waitfor@, 2 @monitor@     & 422           & 426.79        & 7.95  \\
     3176\CFA @waitfor@, 4 @monitor@     & 579.5 & 585.46        & 11.25 \\
    25363177\hline
    25373178\end{tabular}
    25383179\end{center}
    2539 \caption{External scheduling comparison. All numbers are in nanoseconds(\si{\nano\second})}
     3180\caption{External scheduling comparison.
     3181All numbers are in nanoseconds(\si{\nano\second})}
    25403182\label{tab:ext-sched}
    25413183\end{table}
    25423184
     3185
    25433186\subsection{Object Creation}
    2544 Finally, the last benchmark measures the cost of creation for concurrent objects. Listing \ref{lst:creation} shows the code for \texttt{pthread}s and \CFA threads, with results shown in table \ref{tab:creation}. As with all other benchmarks, all omitted tests are functionally identical to one of these tests. The only note here is that the call stacks of \CFA coroutines are lazily created, therefore without priming the coroutine, the creation cost is very low.
     3187Finally, the last benchmark measures the cost of creation for concurrent objects.
     3188Figure~\ref{f:creation} shows the code for @pthread@s and \CFA threads, with results shown in table \ref{tab:creation}.
     3189As with all other benchmarks, all omitted tests are functionally identical to one of these tests.
     3190The only note here is that the call stacks of \CFA coroutines are lazily created, therefore without priming the coroutine, the creation cost is very low.
    25453191
    25463192\begin{figure}
    25473193\begin{center}
    2548 \texttt{pthread}
    2549 \begin{ccode}
     3194@pthread@
     3195\begin{cfa}
    25503196int main() {
    25513197        BENCH(
     
    25663212        printf("%llu\n", result);
    25673213}
    2568 \end{ccode}
     3214\end{cfa}
    25693215
    25703216
    25713217
    25723218\CFA Threads
    2573 \begin{cfacode}
     3219\begin{cfa}
    25743220int main() {
    25753221        BENCH(
     
    25813227        printf("%llu\n", result);
    25823228}
    2583 \end{cfacode}
     3229\end{cfa}
    25843230\end{center}
    2585 \begin{cfacode}[caption={Benchmark code for \texttt{pthread}s and \CFA to measure object creation},label={lst:creation}]
    2586 \end{cfacode}
     3231\caption{Benchmark code for \protect\lstinline|pthread|s and \CFA to measure object creation}
     3232\label{f:creation}
    25873233\end{figure}
    25883234
     
    26043250\end{tabular}
    26053251\end{center}
    2606 \caption{Creation comparison. All numbers are in nanoseconds(\si{\nano\second}).}
     3252\caption{Creation comparison.
     3253All numbers are in nanoseconds(\si{\nano\second}).}
    26073254\label{tab:creation}
    26083255\end{table}
     
    26113258
    26123259\section{Conclusion}
    2613 This paper has achieved a minimal concurrency \textbf{api} that is simple, efficient and usable as the basis for higher-level features. The approach presented is based on a lightweight thread-system for parallelism, which sits on top of clusters of processors. This M:N model is judged to be both more efficient and allow more flexibility for users. Furthermore, this document introduces monitors as the main concurrency tool for users. This paper also offers a novel approach allowing multiple monitors to be accessed simultaneously without running into the Nested Monitor Problem~\cite{Lister77}. It also offers a full implementation of the concurrency runtime written entirely in \CFA, effectively the largest \CFA code base to date.
     3260This paper has achieved a minimal concurrency \textbf{api} that is simple, efficient and usable as the basis for higher-level features.
     3261The approach presented is based on a lightweight thread-system for parallelism, which sits on top of clusters of processors.
     3262This M:N model is judged to be both more efficient and allow more flexibility for users.
     3263Furthermore, this document introduces monitors as the main concurrency tool for users.
     3264This paper also offers a novel approach allowing multiple monitors to be accessed simultaneously without running into the Nested Monitor Problem~\cite{Lister77}.
     3265It also offers a full implementation of the concurrency runtime written entirely in \CFA, effectively the largest \CFA code base to date.
    26143266
    26153267
     
    26213273
    26223274\subsection{Performance} \label{futur:perf}
    2623 This paper presents a first implementation of the \CFA concurrency runtime. Therefore, there is still significant work to improve performance. Many of the data structures and algorithms may change in the future to more efficient versions. For example, the number of monitors in a single \textbf{bulk-acq} is only bound by the stack size, this is probably unnecessarily generous. It may be possible that limiting the number helps increase performance. However, it is not obvious that the benefit would be significant.
     3275This paper presents a first implementation of the \CFA concurrency runtime.
     3276Therefore, there is still significant work to improve performance.
     3277Many of the data structures and algorithms may change in the future to more efficient versions.
     3278For example, the number of monitors in a single \textbf{bulk-acq} is only bound by the stack size, this is probably unnecessarily generous.
     3279It may be possible that limiting the number helps increase performance.
     3280However, it is not obvious that the benefit would be significant.
    26243281
    26253282\subsection{Flexible Scheduling} \label{futur:sched}
    2626 An important part of concurrency is scheduling. Different scheduling algorithms can affect performance (both in terms of average and variation). However, no single scheduler is optimal for all workloads and therefore there is value in being able to change the scheduler for given programs. One solution is to offer various tweaking options to users, allowing the scheduler to be adjusted to the requirements of the workload. However, in order to be truly flexible, it would be interesting to allow users to add arbitrary data and arbitrary scheduling algorithms. For example, a web server could attach Type-of-Service information to threads and have a ``ToS aware'' scheduling algorithm tailored to this specific web server. This path of flexible schedulers will be explored for \CFA.
     3283An important part of concurrency is scheduling.
     3284Different scheduling algorithms can affect performance (both in terms of average and variation).
     3285However, no single scheduler is optimal for all workloads and therefore there is value in being able to change the scheduler for given programs.
     3286One solution is to offer various tweaking options to users, allowing the scheduler to be adjusted to the requirements of the workload.
     3287However, in order to be truly flexible, it would be interesting to allow users to add arbitrary data and arbitrary scheduling algorithms.
     3288For example, a web server could attach Type-of-Service information to threads and have a ``ToS aware'' scheduling algorithm tailored to this specific web server.
     3289This path of flexible schedulers will be explored for \CFA.
    26273290
    26283291\subsection{Non-Blocking I/O} \label{futur:nbio}
    2629 While most of the parallelism tools are aimed at data parallelism and control-flow parallelism, many modern workloads are not bound on computation but on IO operations, a common case being web servers and XaaS (anything as a service). These types of workloads often require significant engineering around amortizing costs of blocking IO operations. At its core, non-blocking I/O is an operating system level feature that allows queuing IO operations (e.g., network operations) and registering for notifications instead of waiting for requests to complete. In this context, the role of the language makes Non-Blocking IO easily available and with low overhead. The current trend is to use asynchronous programming using tools like callbacks and/or futures and promises, which can be seen in frameworks like Node.js~\cite{NodeJs} for JavaScript, Spring MVC~\cite{SpringMVC} for Java and Django~\cite{Django} for Python. However, while these are valid solutions, they lead to code that is harder to read and maintain because it is much less linear.
     3292While most of the parallelism tools are aimed at data parallelism and control-flow parallelism, many modern workloads are not bound on computation but on IO operations, a common case being web servers and XaaS (anything as a service).
     3293These types of workloads often require significant engineering around amortizing costs of blocking IO operations.
     3294At its core, non-blocking I/O is an operating system level feature that allows queuing IO operations (\eg network operations) and registering for notifications instead of waiting for requests to complete.
     3295In this context, the role of the language makes Non-Blocking IO easily available and with low overhead.
     3296The current trend is to use asynchronous programming using tools like callbacks and/or futures and promises, which can be seen in frameworks like Node.js~\cite{NodeJs} for JavaScript, Spring MVC~\cite{SpringMVC} for Java and Django~\cite{Django} for Python.
     3297However, while these are valid solutions, they lead to code that is harder to read and maintain because it is much less linear.
    26303298
    26313299\subsection{Other Concurrency Tools} \label{futur:tools}
    2632 While monitors offer a flexible and powerful concurrent core for \CFA, other concurrency tools are also necessary for a complete multi-paradigm concurrency package. Examples of such tools can include simple locks and condition variables, futures and promises~\cite{promises}, executors and actors. These additional features are useful when monitors offer a level of abstraction that is inadequate for certain tasks.
     3300While monitors offer a flexible and powerful concurrent core for \CFA, other concurrency tools are also necessary for a complete multi-paradigm concurrency package.
     3301Examples of such tools can include simple locks and condition variables, futures and promises~\cite{promises}, executors and actors.
     3302These additional features are useful when monitors offer a level of abstraction that is inadequate for certain tasks.
    26333303
    26343304\subsection{Implicit Threading} \label{futur:implcit}
    2635 Simpler applications can benefit greatly from having implicit parallelism. That is, parallelism that does not rely on the user to write concurrency. This type of parallelism can be achieved both at the language level and at the library level. The canonical example of implicit parallelism is parallel for loops, which are the simplest example of a divide and conquer algorithms~\cite{uC++book}. Table \ref{lst:parfor} shows three different code examples that accomplish point-wise sums of large arrays. Note that none of these examples explicitly declare any concurrency or parallelism objects.
     3305Simpler applications can benefit greatly from having implicit parallelism.
     3306That is, parallelism that does not rely on the user to write concurrency.
     3307This type of parallelism can be achieved both at the language level and at the library level.
     3308The canonical example of implicit parallelism is parallel for loops, which are the simplest example of a divide and conquer algorithms~\cite{uC++book}.
     3309Table \ref{f:parfor} shows three different code examples that accomplish point-wise sums of large arrays.
     3310Note that none of these examples explicitly declare any concurrency or parallelism objects.
    26363311
    26373312\begin{table}
     
    26393314\begin{tabular}[t]{|c|c|c|}
    26403315Sequential & Library Parallel & Language Parallel \\
    2641 \begin{cfacode}[tabsize=3]
     3316\begin{cfa}[tabsize=3]
    26423317void big_sum(
    26433318        int* a, int* b,
     
    26633338//... fill in a & b
    26643339big_sum(a,b,c,10000);
    2665 \end{cfacode} &\begin{cfacode}[tabsize=3]
     3340\end{cfa} &\begin{cfa}[tabsize=3]
    26663341void big_sum(
    26673342        int* a, int* b,
     
    26873362//... fill in a & b
    26883363big_sum(a,b,c,10000);
    2689 \end{cfacode}&\begin{cfacode}[tabsize=3]
     3364\end{cfa}&\begin{cfa}[tabsize=3]
    26903365void big_sum(
    26913366        int* a, int* b,
     
    27113386//... fill in a & b
    27123387big_sum(a,b,c,10000);
    2713 \end{cfacode}
     3388\end{cfa}
    27143389\end{tabular}
    27153390\end{center}
    27163391\caption{For loop to sum numbers: Sequential, using library parallelism and language parallelism.}
    2717 \label{lst:parfor}
     3392\label{f:parfor}
    27183393\end{table}
    27193394
    2720 Implicit parallelism is a restrictive solution and therefore has its limitations. However, it is a quick and simple approach to parallelism, which may very well be sufficient for smaller applications and reduces the amount of boilerplate needed to start benefiting from parallelism in modern CPUs.
     3395Implicit parallelism is a restrictive solution and therefore has its limitations.
     3396However, it is a quick and simple approach to parallelism, which may very well be sufficient for smaller applications and reduces the amount of boilerplate needed to start benefiting from parallelism in modern CPUs.
    27213397
    27223398
     
    27313407% B I B L I O G R A P H Y
    27323408% -----------------------------
    2733 \bibliographystyle{plain}
     3409%\bibliographystyle{plain}
    27343410\bibliography{pl,local}
    27353411
  • doc/papers/concurrency/annex/local.bib

    rb2fe1c9 r32cab5b  
    2121@string{pldi="Programming Language Design and Implementation"}
    2222
    23 
    24 @article{HPP:Study,
    25         keywords        = {Parallel, Productivity},
    26         author  = {Lorin Hochstein and Jeff Carver and Forrest Shull and Sima Asgari and Victor Basili and Jeffrey K. Hollingsworth and Marvin V. Zelkowitz },
    27         title   = {Parallel Programmer Productivity: A Case Study of Novice Parallel Programmers},
     23@inproceedings{Hochstein05,
     24    keywords    = {Application software; Computer aided software engineering; Concurrent computing; Educational
     25                  institutions; High performance computing; Humans; Instruments; Productivity; Programming profession;
     26                  Software engineering},
     27    author      = {Lorin Hochstein and Jeff Carver and Forrest Shull and Sima Asgari and Victor Basili and Jeffrey K. Hollingsworth and Marvin V. Zelkowitz},
     28    title       = {Parallel Programmer Productivity: A Case Study of Novice Parallel Programmers},
     29    booktitle   = {Supercomputing, 2005. Proceedings of the ACM/IEEE SC 2005 Conference},
     30    publisher   = {IEEE},
     31    year        = {2005},
     32    pages       = {35-35},
     33    month       = nov,
    2834}
    2935
     
    3541}
    3642
    37 @article{TBB,
    38         key     = {TBB},
    39         keywords        = {Intel, TBB},
    40         title   = {Intel Thread Building Blocks},
    41         note            = "\url{https://www.threadingbuildingblocks.org/}"
     43@misc{TBB,
     44    keywords    = {Intel, TBB},
     45    key         = {TBB},
     46    title       = {Thread Building Blocks},
     47    howpublished= {Intel, \url{https://www.threadingbuildingblocks.org}},
     48    note        = {Accessed: 2018-3},
    4249}
    4350
     
    4855        title   = {C$\forall$ Programmming Language},
    4956        note    = {\url{https://plg.uwaterloo.ca/~cforall}},
    50 }
    51 
    52 @mastersthesis{rob-thesis,
    53         keywords        = {Constructors, Destructors, Tuples},
    54         author  = {Rob Schluntz},
    55         title   = {Resource Management and Tuples in Cforall},
    56         year            = 2017,
    57         school  = {University of Waterloo},
    58         note    = {\url{https://uwspace.uwaterloo.ca/handle/10012/11830}},
    5957}
    6058
  • doc/papers/concurrency/style/cfa-format.tex

    rb2fe1c9 r32cab5b  
    1 \usepackage[usenames,dvipsnames]{xcolor}
     1%\usepackage[usenames,dvipsnames]{xcolor}
    22\usepackage{listings}
    33\usepackage{inconsolata}
     
    1111% from https://gist.github.com/nikolajquorning/92bbbeef32e1dd80105c9bf2daceb89a
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     21    morestring=[b]",
     22    morecomment=[s]{(*}{*)},
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    1924
    2025\lstdefinelanguage{D}{
    21   % Keywords
    22   morekeywords=[1]{
    23     abstract, alias, align, auto, body, break, cast, catch, class, const,
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    35   morekeywords=[3]{
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    49   morestring=[b]{'},
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    55   morecomment=[n]{/+}{+/},
    56   morecomment=[n][\color{blue}]{/++}{+/},
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    58   sensitive=true
     26        % Keywords
     27        morekeywords=[1]{
     28                abstract, alias, align, auto, body, break, cast, catch, class, const, continue, debug,
     29                delegate, delete, deprecated, do, else, enum, export, false, final, finally, for, foreach,
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     34                with
     35        },
     36        % Special identifiers, common functions
     37        morekeywords=[2]{enforce},
     38        % Ugly identifiers
     39        morekeywords=[3]{
     40                __DATE__, __EOF__, __FILE__, __LINE__, __TIMESTAMP__, __TIME__, __VENDOR__,
     41                __VERSION__, __ctfe, __gshared, __monitor, __thread, __vptr, _argptr,
     42                _arguments, _ctor, _dtor
     43        },
     44        % Basic types
     45        morekeywords=[4]{
     46                byte, ubyte, short, ushort, int, uint, long, ulong, cent, ucent, void, bool, bit, float,
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     48                dstring, ireal, ifloat, idouble, creal, cfloat, cdouble, size_t, ptrdiff_t, sizediff_t,
     49                equals_t, hash_t
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     51        % Strings
     52        morestring=[b]{"},
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    6165\lstdefinelanguage{rust}{
    62   % Keywords
    63   morekeywords=[1]{
    64     abstract, alignof, as, become, box,
    65     break, const, continue, crate, do,
    66     else, enum, extern, false, final,
    67     fn, for, if, impl, in,
    68     let, loop, macro, match, mod,
    69     move, mut, offsetof, override, priv,
    70     proc, pub, pure, ref, return,
    71     Self, self, sizeof, static, struct,
    72     super, trait, true,  type, typeof,
    73     unsafe, unsized, use, virtual, where,
    74     while, yield
    75   },
    76   % Strings
    77   morestring=[b]{"},
    78   % Comments
    79   comment=[l]{//},
    80   morecomment=[s]{/*}{*/},
    81   % Options
    82   sensitive=true
     66        % Keywords
     67        morekeywords=[1]{
     68                abstract, alignof, as, become, box, break, const, continue, crate, do, else, enum, extern,
     69                false, final, fn, for, if, impl, in, let, loop, macro, match, mod, move, mut, offsetof,
     70                override, priv, proc, pub, pure, ref, return, Self, self, sizeof, static, struct, super,
     71                trait, true, type, typeof, unsafe, unsized, use, virtual, where, while, yield
     72        },
     73        % Strings
     74        morestring=[b]{"},
     75        % Comments
     76        comment=[l]{//},
     77        morecomment=[s]{/*}{*/},
     78        % Options
     79        sensitive=true
    8380}
    8481
    8582\lstdefinelanguage{pseudo}{
    86         morekeywords={string,uint,int,bool,float},%
    87         sensitive=true,%
    88         morecomment=[l]{//},%
    89         morecomment=[s]{/*}{*/},%
    90         morestring=[b]',%
    91         morestring=[b]",%
    92         morestring=[s]{`}{`},%
    93 }%
     83        morekeywords={string,uint,int,bool,float},
     84        sensitive=true,
     85        morecomment=[l]{//},
     86        morecomment=[s]{/*}{*/},
     87        morestring=[b]',
     88        morestring=[b]",
     89        morestring=[s]{`}{`},
     90}
    9491
    9592\newcommand{\KWC}{K-W C\xspace}
    9693
    9794\lstdefinestyle{pseudoStyle}{
    98   escapeinside={@@},
    99   basicstyle=\linespread{0.9}\sf\footnotesize,          % reduce line spacing and use typewriter font
    100   keywordstyle=\bfseries\color{blue},
    101   keywordstyle=[2]\bfseries\color{Plum},
    102   commentstyle=\itshape\color{OliveGreen},                  % green and italic comments
    103   identifierstyle=\color{identifierCol},
    104   stringstyle=\sf\color{Mahogany},                                % use sanserif font
    105   mathescape=true,
    106   columns=fixed,
    107   aboveskip=4pt,                                  % spacing above/below code block
    108   belowskip=3pt,
    109   keepspaces=true,
    110   tabsize=4,
    111   % frame=lines,
    112   literate=,
    113   showlines=true,                                % show blank lines at end of code
    114   showspaces=false,
    115   showstringspaces=false,
    116   escapechar=\$,
    117   xleftmargin=\parindentlnth,                     % indent code to paragraph indentation
    118   moredelim=[is][\color{red}\bfseries]{**R**}{**R**},    % red highlighting
    119   % moredelim=* detects keywords, comments, strings, and other delimiters and applies their formatting
    120   % moredelim=** allows cumulative application
     95        escapeinside={@@},
     96        basicstyle=\linespread{0.9}\sf\footnotesize,            % reduce line spacing and use typewriter font
     97        keywordstyle=\bfseries\color{blue},
     98        keywordstyle=[2]\bfseries\color{Plum},
     99        commentstyle=\itshape\color{OliveGreen},                    % green and italic comments
     100        identifierstyle=\color{identifierCol},
     101        stringstyle=\sf\color{Mahogany},                                          % use sanserif font
     102        mathescape=true,
     103        columns=fixed,
     104        aboveskip=4pt,                                                            % spacing above/below code block
     105        belowskip=3pt,
     106        keepspaces=true,
     107        tabsize=4,
     108        % frame=lines,
     109        literate=,
     110        showlines=true,                                                          % show blank lines at end of code
     111        showspaces=false,
     112        showstringspaces=false,
     113        escapechar=\$,
     114        xleftmargin=\parindentlnth,                                  % indent code to paragraph indentation
     115        moredelim=[is][\color{red}\bfseries]{**R**}{**R**},    % red highlighting
     116        % moredelim=* detects keywords, comments, strings, and other delimiters and applies their formatting
     117        % moredelim=** allows cumulative application
    121118}
    122119
    123120\lstdefinestyle{defaultStyle}{
    124   escapeinside={@@},
    125   basicstyle=\linespread{0.9}\tt\footnotesize,          % reduce line spacing and use typewriter font
    126   keywordstyle=\bfseries\color{blue},
    127   keywordstyle=[2]\bfseries\color{Plum},
    128   commentstyle=\itshape\color{OliveGreen},                  % green and italic comments
    129   identifierstyle=\color{identifierCol},
    130   stringstyle=\sf\color{Mahogany},                                % use sanserif font
    131   mathescape=true,
    132   columns=fixed,
    133   aboveskip=4pt,                                  % spacing above/below code block
    134   belowskip=3pt,
    135   keepspaces=true,
    136   tabsize=4,
    137   % frame=lines,
    138   literate=,
    139   showlines=true,                                % show blank lines at end of code
    140   showspaces=false,
    141   showstringspaces=false,
    142   escapechar=\$,
    143   xleftmargin=\parindentlnth,                     % indent code to paragraph indentation
    144   moredelim=[is][\color{red}\bfseries]{**R**}{**R**},    % red highlighting
    145   % moredelim=* detects keywords, comments, strings, and other delimiters and applies their formatting
    146   % moredelim=** allows cumulative application
     121        escapeinside={@@},
     122        basicstyle=\linespread{0.9}\tt\footnotesize,            % reduce line spacing and use typewriter font
     123        keywordstyle=\bfseries\color{blue},
     124        keywordstyle=[2]\bfseries\color{Plum},
     125        commentstyle=\itshape\color{OliveGreen},                    % green and italic comments
     126        identifierstyle=\color{identifierCol},
     127        stringstyle=\sf\color{Mahogany},                                          % use sanserif font
     128        mathescape=true,
     129        columns=fixed,
     130        aboveskip=4pt,                                                            % spacing above/below code block
     131        belowskip=3pt,
     132        keepspaces=true,
     133        tabsize=4,
     134        % frame=lines,
     135        literate=,
     136        showlines=true,                                                          % show blank lines at end of code
     137        showspaces=false,
     138        showstringspaces=false,
     139        escapechar=\$,
     140        xleftmargin=\parindentlnth,                                  % indent code to paragraph indentation
     141        moredelim=[is][\color{red}\bfseries]{**R**}{**R**},    % red highlighting
     142        % moredelim=* detects keywords, comments, strings, and other delimiters and applies their formatting
     143        % moredelim=** allows cumulative application
    147144}
    148145
    149146\lstdefinestyle{cfaStyle}{
    150   escapeinside={@@},
    151   basicstyle=\linespread{0.9}\tt\footnotesize,          % reduce line spacing and use typewriter font
    152   keywordstyle=\bfseries\color{blue},
    153   keywordstyle=[2]\bfseries\color{Plum},
    154   commentstyle=\sf\itshape\color{OliveGreen},             % green and italic comments
    155   identifierstyle=\color{identifierCol},
    156   stringstyle=\sf\color{Mahogany},                                % use sanserif font
    157   mathescape=true,
    158   columns=fixed,
    159   aboveskip=4pt,                                  % spacing above/below code block
    160   belowskip=3pt,
    161   keepspaces=true,
    162   tabsize=4,
    163   % frame=lines,
    164   literate=,
    165   showlines=true,                                 % show blank lines at end of code
    166   showspaces=false,
    167   showstringspaces=false,
    168   escapechar=\$,
    169   xleftmargin=\parindentlnth,                     % indent code to paragraph indentation
    170   moredelim=[is][\color{red}\bfseries]{**R**}{**R**},    % red highlighting
    171   morekeywords=[2]{accept, signal, signal_block, wait, waitfor},
     147        escapeinside={@@},
     148        basicstyle=\linespread{0.9}\sf,         % reduce line spacing and use typewriter font
     149%  keywordstyle=\bfseries\color{blue},
     150        keywordstyle=[2]\bfseries\color{red},
     151%  commentstyle=\sf\itshape\color{OliveGreen},            % green and italic comments
     152        identifierstyle=\color{identifierCol},
     153%  stringstyle=\sf\color{Mahogany},                                       % use sanserif font
     154        stringstyle=\tt,                                                                                % use typewriter font
     155        mathescape=true,
     156        columns=fixed,
     157        aboveskip=4pt,                                                            % spacing above/below code block
     158        belowskip=3pt,
     159        keepspaces=true,
     160        tabsize=4,
     161        % frame=lines,
     162        literate=,
     163        showlines=true,                                                          % show blank lines at end of code
     164        showspaces=false,
     165        showstringspaces=false,
     166        escapechar=\$,
     167        xleftmargin=\parindentlnth,                                  % indent code to paragraph indentation
     168        moredelim=[is][\color{red}\bfseries]{**R**}{**R**},    % red highlighting
     169        morekeywords=[2]{accept, signal, signal_block, wait, waitfor},
    172170}
    173171
     
    175173
    176174\lstnewenvironment{ccode}[1][]{
    177   \lstset{
    178     language = C,
    179     style=defaultStyle,
    180     captionpos=b,
    181     #1
    182   }
     175        \lstset{
     176                language = C,
     177                style=defaultStyle,
     178                captionpos=b,
     179                #1
     180        }
    183181}{}
    184182
    185183\lstnewenvironment{cfacode}[1][]{
    186   \lstset{
    187     language = CFA,
    188     style=cfaStyle,
    189     captionpos=b,
    190     #1
    191   }
     184        \lstset{
     185                language = CFA,
     186                style=cfaStyle,
     187                captionpos=b,
     188                #1
     189        }
    192190}{}
    193191
    194192\lstnewenvironment{pseudo}[1][]{
    195   \lstset{
    196     language = pseudo,
    197     style=pseudoStyle,
    198     captionpos=b,
    199     #1
    200   }
     193        \lstset{
     194                language = pseudo,
     195                style=pseudoStyle,
     196                captionpos=b,
     197                #1
     198        }
    201199}{}
    202200
    203201\lstnewenvironment{cppcode}[1][]{
    204   \lstset{
    205     language = c++,
    206     style=defaultStyle,
    207     captionpos=b,
    208     #1
    209   }
     202        \lstset{
     203                language = c++,
     204                style=defaultStyle,
     205                captionpos=b,
     206                #1
     207        }
    210208}{}
    211209
    212210\lstnewenvironment{ucppcode}[1][]{
    213   \lstset{
    214     language = c++,
    215     style=defaultStyle,
    216     captionpos=b,
    217     #1
    218   }
     211        \lstset{
     212                language = c++,
     213                style=defaultStyle,
     214                captionpos=b,
     215                #1
     216        }
    219217}{}
    220218
    221219\lstnewenvironment{javacode}[1][]{
    222   \lstset{
    223     language = java,
    224     style=defaultStyle,
    225     captionpos=b,
    226     #1
    227   }
     220        \lstset{
     221                language = java,
     222                style=defaultStyle,
     223                captionpos=b,
     224                #1
     225        }
    228226}{}
    229227
    230228\lstnewenvironment{scalacode}[1][]{
    231   \lstset{
    232     language = scala,
    233     style=defaultStyle,
    234     captionpos=b,
    235     #1
    236   }
     229        \lstset{
     230                language = scala,
     231                style=defaultStyle,
     232                captionpos=b,
     233                #1
     234        }
    237235}{}
    238236
    239237\lstnewenvironment{smlcode}[1][]{
    240   \lstset{
    241     language = sml,
    242     style=defaultStyle,
    243     captionpos=b,
    244     #1
    245   }
     238        \lstset{
     239                language = sml,
     240                style=defaultStyle,
     241                captionpos=b,
     242                #1
     243        }
    246244}{}
    247245
    248246\lstnewenvironment{dcode}[1][]{
    249   \lstset{
    250     language = D,
    251     style=defaultStyle,
    252     captionpos=b,
    253     #1
    254   }
     247        \lstset{
     248                language = D,
     249                style=defaultStyle,
     250                captionpos=b,
     251                #1
     252        }
    255253}{}
    256254
    257255\lstnewenvironment{rustcode}[1][]{
    258   \lstset{
    259     language = rust,
    260     style=defaultStyle,
    261     captionpos=b,
    262     #1
    263   }
     256        \lstset{
     257                language = rust,
     258                style=defaultStyle,
     259                captionpos=b,
     260                #1
     261        }
    264262}{}
    265263
    266264\lstnewenvironment{gocode}[1][]{
    267   \lstset{
    268     language = Golang,
    269     style=defaultStyle,
    270     captionpos=b,
    271     #1
    272   }
     265        \lstset{
     266                language = Golang,
     267                style=defaultStyle,
     268                captionpos=b,
     269                #1
     270        }
    273271}{}
    274272
     
    278276\newcommand{\code}[1]{\lstinline[language=CFA,style=cfaStyle]{#1}}
    279277\newcommand{\pscode}[1]{\lstinline[language=pseudo,style=pseudoStyle]{#1}}
     278
     279% Local Variables: %
     280% tab-width: 4 %
     281% fill-column: 100 %
     282% End: %
  • doc/papers/general/.gitignore

    rb2fe1c9 r32cab5b  
    33*.pdf
    44*.ps
     5
     6Paper.tex.plain
     7mail
     8Paper.out.ps
     9WileyNJD-AMA.bst
  • doc/papers/general/Makefile

    rb2fe1c9 r32cab5b  
    33Build = build
    44Figures = figures
    5 Macros = ../../LaTeXmacros
     5Macros = AMA/AMA-stix/ama
    66TeXLIB = .:${Macros}:${Build}:../../bibliography:
    77LaTeX  = TEXINPUTS=${TeXLIB} && export TEXINPUTS && latex -halt-on-error -output-directory=${Build}
    88BibTeX = BIBINPUTS=${TeXLIB} && export BIBINPUTS && bibtex
    99
    10 MAKEFLAGS = --no-print-directory --silent #
     10MAKEFLAGS = --no-print-directory # --silent
    1111VPATH = ${Build} ${Figures} evaluation
    1212
     
    3434
    3535DOCUMENT = Paper.pdf
     36BASE = ${basename ${DOCUMENT}}
    3637
    3738# Directives #
     
    4243
    4344clean :
    44         @rm -frv ${DOCUMENT} ${basename ${DOCUMENT}}.ps ${Build}
     45        @rm -frv ${DOCUMENT} ${BASE}.ps WileyNJD-AMA.bst ${BASE}.out.ps ${Build}
    4546
    4647# File Dependencies #
    4748
    48 ${DOCUMENT} : ${basename ${DOCUMENT}}.ps
     49${DOCUMENT} : ${BASE}.ps
    4950        ps2pdf $<
    5051
    51 ${basename ${DOCUMENT}}.ps : ${basename ${DOCUMENT}}.dvi
     52${BASE}.ps : ${BASE}.dvi
    5253        dvips ${Build}/$< -o $@
    5354
    54 ${basename ${DOCUMENT}}.dvi : Makefile ${Build} ${GRAPHS} ${PROGRAMS} ${PICTURES} ${FIGURES} ${SOURCES} \
    55                 ${Macros}/common.tex ${Macros}/indexstyle ../../bibliography/pl.bib
     55${BASE}.dvi : Makefile ${Build} ${BASE}.out.ps WileyNJD-AMA.bst ${GRAPHS} ${PROGRAMS} ${PICTURES} ${FIGURES} ${SOURCES} \
     56                ../../bibliography/pl.bib
    5657        # Must have *.aux file containing citations for bibtex
    5758        if [ ! -r ${basename $@}.aux ] ; then ${LaTeX} ${basename $@}.tex ; fi
    58         -${BibTeX} ${Build}/${basename $@}
     59        ${BibTeX} ${Build}/${basename $@}
    5960        # Some citations reference others so run again to resolve these citations
    6061        ${LaTeX} ${basename $@}.tex
    61         -${BibTeX} ${Build}/${basename $@}
     62        ${BibTeX} ${Build}/${basename $@}
    6263        # Run again to finish citations
    6364        ${LaTeX} ${basename $@}.tex
     
    6768${Build}:
    6869        mkdir -p ${Build}
     70
     71${BASE}.out.ps:
     72        ln -fs build/Paper.out.ps .
     73
     74WileyNJD-AMA.bst:
     75        ln -fs AMA/AMA-stix/ama/WileyNJD-AMA.bst .
    6976
    7077${GRAPHS} : timing.gp timing.dat
  • doc/papers/general/Paper.tex

    rb2fe1c9 r32cab5b  
    1 \documentclass{article}
    2 
    3 \usepackage{fullpage}
     1\documentclass[AMA,STIX1COL]{WileyNJD-v2}
     2
     3\articletype{RESEARCH ARTICLE}%
     4
     5\received{26 April 2016}
     6\revised{6 June 2016}
     7\accepted{6 June 2016}
     8
     9\raggedbottom
     10
     11%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
     12
     13% Latex packages used in the document.
     14
    415\usepackage{epic,eepic}
    5 \usepackage{xspace,calc,comment}
     16\usepackage{xspace}
     17\usepackage{comment}
    618\usepackage{upquote}                                            % switch curled `'" to straight
    719\usepackage{listings}                                           % format program code
    8 \usepackage{enumitem}
    9 \setlist[itemize]{topsep=3pt,itemsep=2pt,parsep=0pt}% global
    10 \usepackage[flushmargin]{footmisc}                      % support label/reference in footnote
    11 \usepackage{rotating}
    12 \usepackage[usenames]{color}
    13 \usepackage{pslatex}                                            % reduce size of san serif font
    14 \usepackage[plainpages=false,pdfpagelabels,pdfpagemode=UseNone,pagebackref=true,breaklinks=true,colorlinks=true,linkcolor=blue,citecolor=blue,urlcolor=blue]{hyperref}
    15 \urlstyle{sf}
    16 \usepackage{breakurl}
    17 
    18 \setlength{\textheight}{9in}
    19 %\oddsidemargin 0.0in
    20 \renewcommand{\topfraction}{0.8}                        % float must be greater than X of the page before it is forced onto its own page
    21 \renewcommand{\bottomfraction}{0.8}                     % float must be greater than X of the page before it is forced onto its own page
    22 \renewcommand{\floatpagefraction}{0.8}          % float must be greater than X of the page before it is forced onto its own page
    23 \renewcommand{\textfraction}{0.0}                       % the entire page maybe devoted to floats with no text on the page at all
     20%\usepackage{enumitem}
     21%\setlist[itemize]{topsep=3pt,itemsep=2pt,parsep=0pt}% global
     22%\usepackage{rotating}
     23
     24\hypersetup{breaklinks=true}
     25\definecolor{ForestGreen}{cmyk}{1, 0, 0.99995, 0}
     26
     27\usepackage[pagewise]{lineno}
     28\renewcommand{\linenumberfont}{\scriptsize\sffamily}
    2429
    2530\lefthyphenmin=4                                                        % hyphen only after 4 characters
    2631\righthyphenmin=4
     32
     33%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
    2734
    2835% Names used in the document.
     
    6471\newlength{\gcolumnposn}                                        % temporary hack because lstlisting does not handle tabs correctly
    6572\newlength{\columnposn}
    66 \setlength{\gcolumnposn}{2.75in}
     73\setlength{\gcolumnposn}{3.5in}
    6774\setlength{\columnposn}{\gcolumnposn}
    6875\newcommand{\C}[2][\@empty]{\ifx#1\@empty\else\global\setlength{\columnposn}{#1}\global\columnposn=\columnposn\fi\hfill\makebox[\textwidth-\columnposn][l]{\lst@basicstyle{\LstCommentStyle{#2}}}}
     
    97104}%
    98105\newcommand{\ETAL}{\abbrevFont{et}~\abbrevFont{al}}
    99 \newcommand*{\etal}{%
     106\renewcommand*{\etal}{%
    100107        \@ifnextchar{.}{\protect\ETAL}%
    101108                {\protect\ETAL.\xspace}%
     
    145152belowskip=3pt,
    146153% replace/adjust listing characters that look bad in sanserif
    147 literate={-}{\makebox[1ex][c]{\raisebox{0.4ex}{\rule{0.8ex}{0.1ex}}}}1 {^}{\raisebox{0.6ex}{$\scriptscriptstyle\land\,$}}1
    148         {~}{\raisebox{0.3ex}{$\scriptstyle\sim\,$}}1 {@}{\small{@}}1 % {`}{\ttfamily\upshape\hspace*{-0.1ex}`}1
    149         {<-}{$\leftarrow$}2 {=>}{$\Rightarrow$}2 {->}{\makebox[1ex][c]{\raisebox{0.4ex}{\rule{0.8ex}{0.075ex}}}\kern-0.2ex\textgreater}2,
     154literate={-}{\makebox[1ex][c]{\raisebox{0.4ex}{\rule{0.8ex}{0.1ex}}}}1 {^}{\raisebox{0.6ex}{$\scriptstyle\land\,$}}1
     155        {~}{\raisebox{0.3ex}{$\scriptstyle\sim\,$}}1 % {`}{\ttfamily\upshape\hspace*{-0.1ex}`}1
     156        {<-}{$\leftarrow$}2 {=>}{$\Rightarrow$}2 {->}{\makebox[1ex][c]{\raisebox{0.5ex}{\rule{0.8ex}{0.075ex}}}\kern-0.2ex{\textgreater}}2,
    150157moredelim=**[is][\color{red}]{`}{`},
    151158}% lstset
    152 
    153 % inline code @...@
    154 \lstMakeShortInline@%
    155159
    156160\lstnewenvironment{cfa}[1][]
     
    161165{}
    162166
    163 
    164 \title{\protect\CFA : Adding Modern Programming Language Features to C}
    165 
    166 \author{Aaron Moss, Robert Schluntz, Peter Buhr}
    167 % \email{a3moss@uwaterloo.ca}
    168 % \email{rschlunt@uwaterloo.ca}
    169 % \email{pabuhr@uwaterloo.ca}
    170 % \affiliation{%
    171 %       \institution{University of Waterloo}
    172 %       \department{David R. Cheriton School of Computer Science}
    173 %       \streetaddress{Davis Centre, University of Waterloo}
    174 %       \city{Waterloo}
    175 %       \state{ON}
    176 %       \postcode{N2L 3G1}
    177 %       \country{Canada}
    178 % }
    179 
    180 %\terms{generic, tuple, variadic, types}
    181 %\keywords{generic types, tuple types, variadic types, polymorphic functions, C, Cforall}
    182 
    183 \begin{document}
    184 \maketitle
    185 
    186 
    187 \begin{abstract}
     167% inline code @...@
     168\lstMakeShortInline@%
     169
     170
     171\title{\texorpdfstring{\protect\CFA : Adding Modern Programming Language Features to C}{Cforall : Adding Modern Programming Language Features to C}}
     172
     173\author[1]{Aaron Moss}
     174\author[1]{Robert Schluntz}
     175\author[1]{Peter A. Buhr*}
     176\authormark{Aaron Moss \textsc{et al}}
     177
     178\address[1]{\orgdiv{David R. Cheriton School of Computer Science}, \orgname{University of Waterloo}, \orgaddress{\state{Ontario}, \country{Canada}}}
     179
     180\corres{*Peter A. Buhr, \email{pabuhr{\char`\@}uwaterloo.ca}}
     181\presentaddress{David R. Cheriton School of Computer Science, University of Waterloo, Waterloo, ON, N2L 3G1, Canada}
     182
     183
     184\abstract[Summary]{
    188185The C programming language is a foundational technology for modern computing with millions of lines of code implementing everything from commercial operating-systems to hobby projects.
    189186This installation base and the programmers producing it represent a massive software-engineering investment spanning decades and likely to continue for decades more.
     
    195192This paper presents a quick tour of \CFA features showing how their design avoids shortcomings of similar features in C and other C-like languages.
    196193Finally, experimental results are presented to validate several of the new features.
    197 \end{abstract}
     194}%
     195
     196\keywords{generic types, tuple types, variadic types, polymorphic functions, C, Cforall}
     197
     198
     199\begin{document}
     200\linenumbers                                            % comment out to turn off line numbering
     201
     202\maketitle
    198203
    199204
     
    217222Love it or hate it, C is extremely popular, highly used, and one of the few systems languages.
    218223In many cases, \CC is often used solely as a better C.
    219 Nonetheless, C, first standardized over thirty years ago, lacks many features that make programming in more modern languages safer and more productive.
     224Nevertheless, C, first standardized over thirty years ago, lacks many features that make programming in more modern languages safer and more productive.
    220225
    221226\CFA (pronounced ``C-for-all'', and written \CFA or Cforall) is an evolutionary extension of the C programming language that aims to add modern language features to C while maintaining both source compatibility with C and a familiar programming model for programmers.
     
    230235\CFA is currently implemented as a source-to-source translator from \CFA to the gcc-dialect of C~\cite{GCCExtensions}, allowing it to leverage the portability and code optimizations provided by gcc, meeting goals (1)--(3).
    231236Ultimately, a compiler is necessary for advanced features and optimal performance.
    232 All of the features discussed in this paper are working, unless a feature states it is a future feature for completion.
     237All features discussed in this paper are working, unless otherwise stated as under construction.
    233238
    234239Finally, it is impossible to describe a programming language without usages before definitions.
     
    258263
    259264\begin{cfa}
    260 int max = 2147483647;                                           $\C[3.75in]{// (1)}$
     265int max = 2147483647;                                   $\C[4in]{// (1)}$
    261266double max = 1.7976931348623157E+308;   $\C{// (2)}$
    262267int max( int a, int b ) { return a < b ? b : a; }  $\C{// (3)}$
    263268double max( double a, double b ) { return a < b ? b : a; }  $\C{// (4)}\CRT$
    264 max( 7, -max );                                                         $\C{// uses (3) and (1), by matching int from constant 7}$
    265 max( max, 3.14 );                                                       $\C{// uses (4) and (2), by matching double from constant 3.14}$
    266 max( max, -max );                                                       $\C{// ERROR: ambiguous}$
    267 int m = max( max, -max );                                       $\C{// uses (3) and (1) twice, by matching return type}$
     269max( 7, -max );                                         $\C[2.75in]{// uses (3) and (1), by matching int from constant 7}$
     270max( max, 3.14 );                                       $\C{// uses (4) and (2), by matching double from constant 3.14}$
     271max( max, -max );                                       $\C{// ERROR: ambiguous}$
     272int m = max( max, -max );                       $\C{// uses (3) and (1) twice, by matching return type}\CRT$
    268273\end{cfa}
    269274
     
    292297\begin{cfa}
    293298`forall( otype T )` T identity( T val ) { return val; }
    294 int forty_two = identity( 42 );                         $\C{// T is bound to int, forty\_two == 42}$
     299int forty_two = identity( 42 );         $\C{// T is bound to int, forty\_two == 42}$
    295300\end{cfa}
    296301This @identity@ function can be applied to any complete \newterm{object type} (or @otype@).
     
    306311For example, the function @twice@ can be defined using the \CFA syntax for operator overloading:
    307312\begin{cfa}
    308 forall( otype T `| { T ?+?(T, T); }` ) T twice( T x ) { return x `+` x; }       $\C{// ? denotes operands}$
     313forall( otype T `| { T ?+?(T, T); }` ) T twice( T x ) { return x `+` x; }  $\C{// ? denotes operands}$
    309314int val = twice( twice( 3.7 ) );
    310315\end{cfa}
     
    325330}
    326331double key = 5.0, vals[10] = { /* 10 sorted float values */ };
    327 double * val = (double *)bsearch( &key, vals, 10, sizeof(vals[0]), comp );      $\C{// search sorted array}$
     332double * val = (double *)bsearch( &key, vals, 10, sizeof(vals[0]), comp ); $\C{// search sorted array}$
    328333\end{cfa}
    329334which can be augmented simply with a generalized, type-safe, \CFA-overloaded wrappers:
     
    335340forall( otype T | { int ?<?( T, T ); } ) unsigned int bsearch( T key, const T * arr, size_t size ) {
    336341        T * result = bsearch( key, arr, size ); $\C{// call first version}$
    337         return result ? result - arr : size;    $\C{// pointer subtraction includes sizeof(T)}$
    338 }
    339 double * val = bsearch( 5.0, vals, 10 );        $\C{// selection based on return type}$
     342        return result ? result - arr : size; $\C{// pointer subtraction includes sizeof(T)}$
     343}
     344double * val = bsearch( 5.0, vals, 10 ); $\C{// selection based on return type}$
    340345int posn = bsearch( 5.0, vals, 10 );
    341346\end{cfa}
     
    361366forall( otype T | { int ?<?( T, T ); } ) void qsort( const T * arr, size_t size ) { /* use C qsort */ }
    362367{
    363         int ?<?( double x, double y ) { return x `>` y; }       $\C{// locally override behaviour}$
     368        int ?<?( double x, double y ) { return x `>` y; } $\C{// locally override behaviour}$
    364369        qsort( vals, size );                                    $\C{// descending sort}$
    365370}
     
    367372Within the block, the nested version of @?<?@ performs @?>?@ and this local version overrides the built-in @?<?@ so it is passed to @qsort@.
    368373Hence, programmers can easily form local environments, adding and modifying appropriate functions, to maximize reuse of other existing functions and types.
     374
     375Under construction is a mechanism to distribute @forall@ over routines/types, where each block declaration is prefixed with the initial @forall@ clause significantly reducing duplication (see @stack@ examples in Section~\ref{sec:eval}):
     376\begin{cfa}
     377forall( otype `T` ) {                                                   $\C{// forall block}$
     378        struct stack { stack_node(`T`) * head; };       $\C{// generic type}$
     379        void push( stack(`T`) & s, `T` value ) ...      $\C{// generic operations}$
     380        T pop( stack(`T`) & s ) ...
     381}
     382\end{cfa}
    369383
    370384
     
    378392        T ?+=?( T *, T );
    379393        T ++?( T * );
    380         T ?++( T * ); };
    381 
     394        T ?++( T * );
     395};
    382396forall( otype T `| summable( T )` ) T sum( T a[$\,$], size_t size ) {  // use trait
    383397        `T` total = { `0` };                                    $\C{// instantiate T from 0 by calling its constructor}$
    384398        for ( unsigned int i = 0; i < size; i += 1 ) total `+=` a[i]; $\C{// select appropriate +}$
    385         return total; }
     399        return total;
     400}
    386401\end{cfa}
    387402
     
    392407        void ?{}( T &, T );                                             $\C{// copy constructor}$
    393408        void ?=?( T &, T );                                             $\C{// assignment operator}$
    394         void ^?{}( T & ); };                                    $\C{// destructor}$
     409        void ^?{}( T & );                                               $\C{// destructor}$
     410};
    395411\end{cfa}
    396412Given the information provided for an @otype@, variables of polymorphic type can be treated as if they were a complete type: stack-allocatable, default or copy-initialized, assigned, and deleted.
     
    436452One approach is to write bespoke data-structures for each context in which they are needed.
    437453While this approach is flexible and supports integration with the C type-checker and tooling, it is also tedious and error-prone, especially for more complex data structures.
    438 A second approach is to use @void *@ based polymorphism, \eg the C standard-library functions @bsearch@ and @qsort@, which allow reuse of code with common functionality.
     454A second approach is to use @void *@-based polymorphism, \eg the C standard-library functions @bsearch@ and @qsort@, which allow reuse of code with common functionality.
    439455However, basing all polymorphism on @void *@ eliminates the type-checker's ability to ensure that argument types are properly matched, often requiring a number of extra function parameters, pointer indirection, and dynamic allocation that is not otherwise needed.
    440456A third approach to generic code is to use preprocessor macros, which does allow the generated code to be both generic and type-checked, but errors may be difficult to interpret.
     
    526542Results of these layout functions are cached so that they are only computed once per type per function. %, as in the example below for @pair@.
    527543Layout functions also allow generic types to be used in a function definition without reflecting them in the function signature.
    528 For instance, a function that strips duplicate values from an unsorted @vector(T)@ would likely have a pointer to the vector as its only explicit parameter, but use some sort of @set(T)@ internally to test for duplicate values.
     544For instance, a function that strips duplicate values from an unsorted @vector(T)@ likely has a pointer to the vector as its only explicit parameter, but uses some sort of @set(T)@ internally to test for duplicate values.
    529545This function could acquire the layout for @set(T)@ by calling its layout function with the layout of @T@ implicitly passed into the function.
    530546
     
    553569struct litres {};
    554570
    555 forall( dtype U) scalar(U) ?+?( scalar(U) a, scalar(U) b ) {
     571forall( dtype U ) scalar(U) ?+?( scalar(U) a, scalar(U) b ) {
    556572        return (scalar(U)){ a.value + b.value };
    557573}
     
    592608[ q, r ] = div( 13.5, 5.2 );                            $\C{// assign into tuple}$
    593609\end{cfa}
    594 Clearly, this approach is straightforward to understand and use;
     610This approach is straightforward to understand and use;
    595611therefore, why do few programming languages support this obvious feature or provide it awkwardly?
    596 The answer is that there are complex consequences that cascade through multiple aspects of the language, especially the type-system.
     612To answer, there are complex consequences that cascade through multiple aspects of the language, especially the type-system.
    597613This section show these consequences and how \CFA handles them.
    598614
     
    644660p`->0` = 5;                                                                     $\C{// change quotient}$
    645661bar( qr`.1`, qr );                                                      $\C{// pass remainder and quotient/remainder}$
    646 rem = [div( 13, 5 ), 42]`.0.1`;                         $\C{// access 2nd component of 1st component of tuple expression}$
     662rem = [div( 13, 5 ), 42]`.0.1`;                         $\C{// access 2nd component of 1st component}$
    647663\end{cfa}
    648664
     
    653669Tuple flattening recursively expands a tuple into the list of its basic components.
    654670Tuple structuring packages a list of expressions into a value of tuple type, \eg:
    655 %\lstDeleteShortInline@%
    656 %\par\smallskip
    657 %\begin{tabular}{@{}l@{\hspace{1.5\parindent}}||@{\hspace{1.5\parindent}}l@{}}
    658671\begin{cfa}
    659672int f( int, int );
    660 int g( [int, int] );
    661 int h( int, [int, int] );
     673[int] g( [int, int] );
     674[int] h( int, [int, int] );
    662675[int, int] x;
    663676int y;
    664 f( x );                 $\C{// flatten}$
    665 g( y, 10 );             $\C{// structure}$
    666 h( x, y );              $\C{// flatten and structure}$
    667 \end{cfa}
    668 %\end{cfa}
    669 %&
    670 %\begin{cfa}
    671 %\end{tabular}
    672 %\smallskip\par\noindent
    673 %\lstMakeShortInline@%
     677f( x );                                                                         $\C{// flatten}$
     678g( y, 10 );                                                                     $\C{// structure}$
     679h( x, y );                                                                      $\C{// flatten and structure}$
     680\end{cfa}
    674681In the call to @f@, @x@ is implicitly flattened so the components of @x@ are passed as the two arguments.
    675682In the call to @g@, the values @y@ and @10@ are structured into a single argument of type @[int, int]@ to match the parameter type of @g@.
     
    682689An assignment where the left side is a tuple type is called \newterm{tuple assignment}.
    683690There are two kinds of tuple assignment depending on whether the right side of the assignment operator has a tuple type or a non-tuple type, called \newterm{multiple} and \newterm{mass assignment}, respectively.
    684 %\lstDeleteShortInline@%
    685 %\par\smallskip
    686 %\begin{tabular}{@{}l@{\hspace{1.5\parindent}}||@{\hspace{1.5\parindent}}l@{}}
    687691\begin{cfa}
    688692int x = 10;
     
    694698[y, x] = 3.14;                                                          $\C{// mass assignment}$
    695699\end{cfa}
    696 %\end{cfa}
    697 %&
    698 %\begin{cfa}
    699 %\end{tabular}
    700 %\smallskip\par\noindent
    701 %\lstMakeShortInline@%
    702700Both kinds of tuple assignment have parallel semantics, so that each value on the left and right side is evaluated before any assignments occur.
    703701As a result, it is possible to swap the values in two variables without explicitly creating any temporary variables or calling a function, \eg, @[x, y] = [y, x]@.
     
    708706This example shows mass, multiple, and cascading assignment used in one expression:
    709707\begin{cfa}
    710 void f( [int, int] );
     708[void] f( [int, int] );
    711709f( [x, y] = z = 1.5 );                                          $\C{// assignments in parameter list}$
    712710\end{cfa}
     
    723721Here, the mass assignment sets all members of @s@ to zero.
    724722Since tuple-index expressions are a form of member-access expression, it is possible to use tuple-index expressions in conjunction with member tuple expressions to manually restructure a tuple (\eg rearrange, drop, and duplicate components).
    725 %\lstDeleteShortInline@%
    726 %\par\smallskip
    727 %\begin{tabular}{@{}l@{\hspace{1.5\parindent}}||@{\hspace{1.5\parindent}}l@{}}
    728723\begin{cfa}
    729724[int, int, long, double] x;
     
    733728[int, int, int] y = x.[2, 0, 2];                        $\C{// duplicate: [y.0, y.1, y.2] = [x.2, x.0.x.2]}$
    734729\end{cfa}
    735 %\end{cfa}
    736 %&
    737 %\begin{cfa}
    738 %\end{tabular}
    739 %\smallskip\par\noindent
    740 %\lstMakeShortInline@%
    741730It is also possible for a member access to contain other member accesses, \eg:
    742731\begin{cfa}
     
    796785Since @void@ is effectively a 0-element tuple, (3) discards the first and third return values, which is effectively equivalent to @[(int)(g().1.0), (int)(g().1.1)]@).
    797786
    798 Note that a cast is not a function call in \CFA, so flattening and structuring conversions do not occur for cast expressions\footnote{User-defined conversions have been considered, but for compatibility with C and the existing use of casts as type ascription, any future design for such conversions would require more precise matching of types than allowed for function arguments and parameters.}.
     787Note that a cast is not a function call in \CFA, so flattening and structuring conversions do not occur for cast expressions\footnote{User-defined conversions have been considered, but for compatibility with C and the existing use of casts as type ascription, any future design for such conversions requires more precise matching of types than allowed for function arguments and parameters.}.
    799788As such, (4) is invalid because the cast target type contains 4 components, while the source type contains only 3.
    800789Similarly, (5) is invalid because the cast @([int, int, int])(g().1)@ is invalid.
     
    813802where @[5, "hello"]@ is flattened, giving argument list @5, "hello"@, and @T@ binds to @int@ and @U@ binds to @const char@.
    814803Tuples, however, may contain polymorphic components.
    815 For example, a plus operator can be written to add two triples together.
     804For example, a plus operator can be written to sum two triples.
    816805\begin{cfa}
    817806forall( otype T | { T ?+?( T, T ); } ) [T, T, T] ?+?( [T, T, T] x, [T, T, T] y ) {
     
    825814Flattening and restructuring conversions are also applied to tuple types in polymorphic type assertions.
    826815\begin{cfa}
    827 int f( [int, double], double );
     816[int] f( [int, double], double );
    828817forall( otype T, otype U | { T f( T, U, U ); } ) void g( T, U );
    829818g( 5, 10.21 );
     
    836825% \end{cfa}
    837826% so the thunk provides flattening and structuring conversions to inferred functions, improving the compatibility of tuples and polymorphism.
    838 % These thunks are generated locally using gcc nested-functions, rather hositing them to the external scope, so they can easily access local state.
     827% These thunks are generated locally using gcc nested-functions, rather hoisting them to the external scope, so they can easily access local state.
    839828
    840829
     
    847836As such, @ttype@ variables are also called \newterm{argument packs}.
    848837
    849 Like variadic templates, the main way to manipulate @ttype@ polymorphic functions is via recursion.
     838Like variadic templates, @ttype@ polymorphic functions are primarily manipulated via recursion.
    850839Since nothing is known about a parameter pack by default, assertion parameters are key to doing anything meaningful.
    851840Unlike variadic templates, @ttype@ polymorphic functions can be separately compiled.
    852 For example, a generalized @sum@ function written using @ttype@:
     841For example, a generalized @sum@ function:
    853842\begin{cfa}
    854843int sum$\(_0\)$() { return 0; }
     
    10281017\begin{cquote}
    10291018\lstDeleteShortInline@%
    1030 \begin{tabular}{@{}l@{\hspace{\parindentlnth}}l@{}}
    1031 \multicolumn{1}{c@{\hspace{\parindentlnth}}}{\textbf{\CFA}}     & \multicolumn{1}{c}{\textbf{C}}        \\
     1019\begin{tabular}{@{}l@{\hspace{2\parindentlnth}}l@{}}
     1020\multicolumn{1}{c@{\hspace{2\parindentlnth}}}{\textbf{\CFA}}    & \multicolumn{1}{c}{\textbf{C}}        \\
    10321021\begin{cfa}
    10331022case 2, 10, 34, 42:
     
    10401029\lstMakeShortInline@%
    10411030\end{cquote}
    1042 for a contiguous list:\footnote{gcc has the same mechanism but awkward syntax, \lstinline@2 ...42@, because a space is required after a number, otherwise the period is a decimal point.}
     1031for a contiguous list:\footnote{gcc has the same mechanism but awkward syntax, \lstinline@2 ...42@, as a space is required after a number, otherwise the first period is a decimal point.}
    10431032\begin{cquote}
    10441033\lstDeleteShortInline@%
    1045 \begin{tabular}{@{}l@{\hspace{\parindentlnth}}l@{}}
    1046 \multicolumn{1}{c@{\hspace{\parindentlnth}}}{\textbf{\CFA}}     & \multicolumn{1}{c}{\textbf{C}}        \\
     1034\begin{tabular}{@{}l@{\hspace{2\parindentlnth}}l@{}}
     1035\multicolumn{1}{c@{\hspace{2\parindentlnth}}}{\textbf{\CFA}}    & \multicolumn{1}{c}{\textbf{C}}        \\
    10471036\begin{cfa}
    10481037case 2~42:
     
    10601049\end{cfa}
    10611050
    1062 C allows placement of @case@ clauses \emph{within} statements nested in the @switch@ body (see Duff's device~\cite{Duff83});
     1051C allows placement of @case@ clauses \emph{within} statements nested in the @switch@ body (called Duff's device~\cite{Duff83});
    10631052\begin{cfa}
    10641053switch ( i ) {
     
    10711060}
    10721061\end{cfa}
    1073 \CFA precludes this form of transfer into a control structure because it causes undefined behaviour, especially with respect to missed initialization, and provides very limited functionality.
     1062\CFA precludes this form of transfer \emph{into} a control structure because it causes undefined behaviour, especially with respect to missed initialization, and provides very limited functionality.
    10741063
    10751064C allows placement of declaration within the @switch@ body and unreachable code at the start, resulting in undefined behaviour:
     
    11361125\end{figure}
    11371126
    1138 Finally, @fallthrough@ may appear in contexts other than terminating a @case@ clause, and have an explicit transfer label allowing separate cases but common final-code for a set of cases:
    1139 \begin{cquote}
     1127Finally, Figure~\ref{f:FallthroughStatement} shows @fallthrough@ may appear in contexts other than terminating a @case@ clause, and have an explicit transfer label allowing separate cases but common final-code for a set of cases.
     1128The target label must be below the @fallthrough@ and may not be nested in a control structure, \ie @fallthrough@ cannot form a loop, and the target label must be at the same or higher level as the containing @case@ clause and located at the same level as a @case@ clause;
     1129the target label may be case @default@, but only associated with the current @switch@/@choose@ statement.
     1130
     1131\begin{figure}
     1132\centering
    11401133\lstDeleteShortInline@%
    11411134\begin{tabular}{@{}l@{\hspace{2\parindentlnth}}l@{}}
     
    11591152  case 4:
    11601153        ... `fallthrough common;`
    1161   common:
     1154  `common`: // below fallthrough at same level as case clauses
    11621155        ...      // common code for cases 3 and 4
    11631156        // implicit break
     
    11661159\end{tabular}
    11671160\lstMakeShortInline@%
    1168 \end{cquote}
    1169 The target label may be case @default@.
    1170 
    1171 Collectively, these control-structure enhancements reduce programmer burden and increase readability and safety.
     1161\caption{\lstinline|fallthrough| Statement}
     1162\label{f:FallthroughStatement}
     1163\end{figure}
    11721164
    11731165
     
    12991291        R r;
    13001292        ... `resume( r );` ...
    1301         ... r.fix // control does return here after handler
     1293        ... r.fix // control returns here after handler
    13021294}
    13031295`try` {
     
    14121404
    14131405
    1414 \subsection{\texorpdfstring{\protect\lstinline{with} Clause / Statement}{with Clause / Statement}}
    1415 \label{s:WithClauseStatement}
     1406\subsection{\texorpdfstring{\protect\lstinline{with} Statement}{with Statement}}
     1407\label{s:WithStatement}
    14161408
    14171409Grouping heterogeneous data into \newterm{aggregate}s (structure/union) is a common programming practice, and an aggregate can be further organized into more complex structures, such as arrays and containers:
     
    14331425A similar situation occurs in object-oriented programming, \eg \CC:
    14341426\begin{C++}
    1435 class C {
     1427struct S {
    14361428        char c;                                                                 $\C{// fields}$
    14371429        int i;
    14381430        double d;
    1439         int f() {                                                               $\C{// implicit ``this'' aggregate}$
     1431        void f() {                                                              $\C{// implicit ``this'' aggregate}$
    14401432                `this->`c; `this->`i; `this->`d;        $\C{// access containing fields}$
    14411433        }
    14421434}
    14431435\end{C++}
    1444 Object-oriented nesting of member functions in a \lstinline[language=C++]@class@ allows eliding \lstinline[language=C++]@this->@ because of lexical scoping.
     1436Object-oriented nesting of member functions in a \lstinline[language=C++]@class/struct@ allows eliding \lstinline[language=C++]@this->@ because of lexical scoping.
    14451437However, for other aggregate parameters, qualification is necessary:
    14461438\begin{cfa}
    14471439struct T { double m, n; };
    1448 int C::f( T & t ) {                                                     $\C{// multiple aggregate parameters}$
    1449         c; i; d;                                                                $\C{\color{red}// this-\textgreater.c, this-\textgreater.i, this-\textgreater.d}$
     1440int S::f( T & t ) {                                                     $\C{// multiple aggregate parameters}$
     1441        c; i; d;                                                                $\C{\color{red}// this--{\textgreater}.c, this--{\textgreater}.i, this--{\textgreater}.d}$
    14501442        `t.`m; `t.`n;                                                   $\C{// must qualify}$
    14511443}
     
    14611453with the generality of opening multiple aggregate-parameters:
    14621454\begin{cfa}
    1463 int f( S & s, T & t ) `with ( s, t )` {         $\C{// multiple aggregate parameters}$
     1455void f( S & s, T & t ) `with ( s, t )` {                $\C{// multiple aggregate parameters}$
    14641456        c; i; d;                                                                $\C{\color{red}// s.c, s.i, s.d}$
    14651457        m; n;                                                                   $\C{\color{red}// t.m, t.n}$
     
    15271519\begin{cfa}
    15281520struct S { int i, j; } sv;
    1529 with ( sv ) {                                                           $\C{implicit reference}$
     1521with ( sv ) {                                                           $\C{// implicit reference}$
    15301522        S & sr = sv;
    1531         with ( sr ) {                                                   $\C{explicit reference}$
     1523        with ( sr ) {                                                   $\C{// explicit reference}$
    15321524                S * sp = &sv;
    1533                 with ( *sp ) {                                          $\C{computed reference}$
    1534                         i = 3; j = 4;                                   $\C{\color{red}// sp-{\textgreater}i, sp-{\textgreater}j}$
     1525                with ( *sp ) {                                          $\C{// computed reference}$
     1526                        i = 3; j = 4;                                   $\C{\color{red}// sp--{\textgreater}i, sp--{\textgreater}j}$
    15351527                }
    15361528                i = 2; j = 3;                                           $\C{\color{red}// sr.i, sr.j}$
     
    15391531}
    15401532\end{cfa}
     1533
     1534Collectively, these control-structure enhancements reduce programmer burden and increase readability and safety.
    15411535
    15421536
     
    15821576\begin{cquote}
    15831577\lstDeleteShortInline@%
    1584 \begin{tabular}{@{}l@{\hspace{\parindentlnth}}l@{\hspace{\parindentlnth}}l@{}}
    1585 \multicolumn{1}{c@{\hspace{\parindentlnth}}}{\textbf{\CFA}}     & \multicolumn{1}{c}{\textbf{C}}        \\
     1578\begin{tabular}{@{}l@{\hspace{2\parindentlnth}}l@{\hspace{2\parindentlnth}}l@{}}
     1579\multicolumn{1}{c@{\hspace{2\parindentlnth}}}{\textbf{\CFA}}    & \multicolumn{1}{c}{\textbf{C}}        \\
    15861580\begin{cfa}
    15871581`[5] *` int x1;
     
    15981592\begin{cfa}
    15991593// array of 5 pointers to int
    1600 // pointer to an array of 5 int
    1601 // function returning pointer to an array of 5 int and taking an int
     1594// pointer to array of 5 int
     1595// function returning pointer to array of 5 int and taking int
    16021596\end{cfa}
    16031597\end{tabular}
     
    16101604\begin{cquote}
    16111605\lstDeleteShortInline@%
    1612 \begin{tabular}{@{}l@{\hspace{\parindentlnth}}l@{}}
    1613 \multicolumn{1}{c@{\hspace{\parindentlnth}}}{\textbf{\CFA}}     & \multicolumn{1}{c}{\textbf{C}}        \\
     1606\begin{tabular}{@{}l@{\hspace{2\parindentlnth}}l@{}}
     1607\multicolumn{1}{c@{\hspace{2\parindentlnth}}}{\textbf{\CFA}}    & \multicolumn{1}{c}{\textbf{C}}        \\
    16141608\begin{cfa}
    16151609`*` int x, y;
     
    16301624\begin{cquote}
    16311625\lstDeleteShortInline@%
    1632 \begin{tabular}{@{}l@{\hspace{\parindentlnth}}l@{\hspace{\parindentlnth}}l@{}}
    1633 \multicolumn{1}{c@{\hspace{\parindentlnth}}}{\textbf{\CFA}}     & \multicolumn{1}{c@{\hspace{\parindentlnth}}}{\textbf{C}}      \\
     1626\begin{tabular}{@{}l@{\hspace{2\parindentlnth}}l@{\hspace{2\parindentlnth}}l@{}}
     1627\multicolumn{1}{c@{\hspace{2\parindentlnth}}}{\textbf{\CFA}}    & \multicolumn{1}{c@{\hspace{2\parindentlnth}}}{\textbf{C}}     \\
    16341628\begin{cfa}
    16351629[ 5 ] int z;
     
    16721666\begin{cquote}
    16731667\lstDeleteShortInline@%
    1674 \begin{tabular}{@{}l@{\hspace{1em}}l@{\hspace{1em}}l@{}}
    1675 \multicolumn{1}{c@{\hspace{1em}}}{\textbf{\CFA}}        & \multicolumn{1}{c@{\hspace{1em}}}{\textbf{C}} \\
     1668\begin{tabular}{@{}l@{\hspace{2\parindentlnth}}l@{\hspace{2\parindentlnth}}l@{}}
     1669\multicolumn{1}{c@{\hspace{2\parindentlnth}}}{\textbf{\CFA}}    & \multicolumn{1}{c@{\hspace{2\parindentlnth}}}{\textbf{C}}     \\
    16761670\begin{cfa}
    16771671extern const * const int x;
    1678 static const * [ 5 ] const int y;
     1672static const * [5] const int y;
    16791673\end{cfa}
    16801674&
    16811675\begin{cfa}
    16821676int extern const * const x;
    1683 static const int (* const y)[ 5 ]
     1677static const int (* const y)[5]
    16841678\end{cfa}
    16851679&
     
    16971691\begin{cquote}
    16981692\lstDeleteShortInline@%
    1699 \begin{tabular}{@{}l@{\hspace{\parindentlnth}}l@{}}
    1700 \multicolumn{1}{c@{\hspace{\parindentlnth}}}{\textbf{\CFA}}     & \multicolumn{1}{c}{\textbf{C}}        \\
     1693\begin{tabular}{@{}l@{\hspace{2\parindentlnth}}l@{}}
     1694\multicolumn{1}{c@{\hspace{2\parindentlnth}}}{\textbf{\CFA}}    & \multicolumn{1}{c}{\textbf{C}}        \\
    17011695\begin{cfa}
    17021696y = (* int)x;
     
    17151709as well, parameter names are optional, \eg:
    17161710\begin{cfa}
    1717 [ int x ] f ( /* void */ );                                     $\C{// returning int with no parameters}$
    1718 [ int x ] f (...);                                                      $\C{// returning int with unknown parameters}$
    1719 [ * int ] g ( int y );                                          $\C{// returning pointer to int with int parameter}$
    1720 [ void ] h ( int, char );                                       $\C{// returning no result with int and char parameters}$
    1721 [ * int, int ] j ( int );                                       $\C{// returning pointer to int and int, with int parameter}$
     1711[ int x ] f ( /* void */ );             $\C[2.5in]{// returning int with no parameters}$
     1712[ int x ] f (...);                              $\C{// returning int with unknown parameters}$
     1713[ * int ] g ( int y );                  $\C{// returning pointer to int with int parameter}$
     1714[ void ] h ( int, char );               $\C{// returning no result with int and char parameters}$
     1715[ * int, int ] j ( int );               $\C{// returning pointer to int and int with int parameter}$
    17221716\end{cfa}
    17231717This syntax allows a prototype declaration to be created by cutting and pasting source text from the function-definition header (or vice versa).
     
    17251719\begin{cquote}
    17261720\lstDeleteShortInline@%
    1727 \begin{tabular}{@{}l@{\hspace{\parindentlnth}}l@{}}
    1728 \multicolumn{1}{c@{\hspace{\parindentlnth}}}{\textbf{\CFA}}     & \multicolumn{1}{c}{\textbf{C}}        \\
     1721\begin{tabular}{@{}l@{\hspace{2\parindentlnth}}l@{}}
     1722\multicolumn{1}{c@{\hspace{2\parindentlnth}}}{\textbf{\CFA}}    & \multicolumn{1}{c}{\textbf{C}}        \\
    17291723\begin{cfa}
    17301724[double] foo(), foo( int ), foo( double ) {...}
     
    17411735The syntax for pointers to \CFA functions specifies the pointer name on the right, \eg:
    17421736\begin{cfa}
    1743 * [ int x ] () fp;                                                      $\C{// pointer to function returning int with no parameters}$
    1744 * [ * int ] ( int y ) gp;                                       $\C{// pointer to function returning pointer to int with int parameter}$
    1745 * [ ] ( int, char ) hp;                                         $\C{// pointer to function returning no result with int and char parameters}$
    1746 * [ * int, int ] ( int ) jp;                            $\C{// pointer to function returning pointer to int and int, with int parameter}$
     1737* [ int x ] () fp;                              $\C{// pointer to function returning int with no parameters}$
     1738* [ * int ] ( int y ) gp;               $\C{// pointer to function returning pointer to int with int parameter}$
     1739* [ ] ( int, char ) hp;                 $\C{// pointer to function returning no result with int and char parameters}$
     1740* [ * int, int ] ( int ) jp;    $\C{// pointer to function returning pointer to int and int with int parameter}$
    17471741\end{cfa}
    17481742Note, a function name cannot be specified:
    17491743\begin{cfa}
    1750 * [ int x ] f () fp;                                            $\C{// function name "f" is disallowed}$
     1744* [ int x ] f () fp;                    $\C{// function name "f" is disallowed}\CRT$
    17511745\end{cfa}
    17521746
     
    18631857\begin{cfa}
    18641858struct S { double x, y; };
    1865 int i, j;
     1859int x, y;
    18661860void f( int & i, int & j, S & s, int v[] );
    1867 f( 3, i + j, (S){ 1.0, 7.0 }, (int [3]){ 1, 2, 3 } );   $\C{// pass rvalue to lvalue \(\Rightarrow\) implicit temporary}$
     1861f( 3, x + y, (S){ 1.0, 7.0 }, (int [3]){ 1, 2, 3 } ); $\C{// pass rvalue to lvalue \(\Rightarrow\) implicit temporary}$
    18681862\end{cfa}
    18691863This allows complex values to be succinctly and efficiently passed to functions, without the syntactic overhead of explicit definition of a temporary variable or the runtime cost of pass-by-value.
     
    19521946
    19531947One of the strengths (and weaknesses) of C is memory-management control, allowing resource release to be precisely specified versus unknown release with garbage-collected memory-management.
    1954 However, this manual approach is often verbose, and it is useful to manage resources other than memory (\eg file handles) using the same mechanism as memory.
     1948However, this manual approach is verbose, and it is useful to manage resources other than memory (\eg file handles) using the same mechanism as memory.
    19551949\CC addresses these issues using Resource Aquisition Is Initialization (RAII), implemented by means of \newterm{constructor} and \newterm{destructor} functions;
    19561950\CFA adopts constructors and destructors (and @finally@) to facilitate RAII.
     
    20041998{
    20051999        VLA  x,            y = { 20, 0x01 },     z = y; $\C{// z points to y}$
    2006         //      ?{}( x );  ?{}( y, 20, 0x01 );  ?{}( z, y );
     2000        //    ?{}( x );   ?{}( y, 20, 0x01 );    ?{}( z, y );
    20072001        ^x{};                                                                   $\C{// deallocate x}$
    20082002        x{};                                                                    $\C{// reallocate x}$
     
    20522046\begin{cquote}
    20532047\lstDeleteShortInline@%
    2054 \begin{tabular}{@{}l@{\hspace{\parindentlnth}}l@{\hspace{\parindentlnth}}l@{}}
     2048\begin{tabular}{@{}l@{\hspace{2\parindentlnth}}l@{\hspace{2\parindentlnth}}l@{}}
    20552049\begin{cfa}
    2056205020_`hh`     // signed char
     
    21052099
    21062100For readability, it is useful to associate units to scale literals, \eg weight (stone, pound, kilogram) or time (seconds, minutes, hours).
    2107 The left of Figure~\ref{f:UserLiteral} shows the \CFA alternative call-syntax (literal argument before function name), using the backquote, to convert basic literals into user literals.
     2101The left of Figure~\ref{f:UserLiteral} shows the \CFA alternative call-syntax (postfix: literal argument before function name), using the backquote, to convert basic literals into user literals.
    21082102The backquote is a small character, making the unit (function name) predominate.
    21092103For examples, the multi-precision integer-type in Section~\ref{s:MultiPrecisionIntegers} has user literals:
     
    21132107y = "12345678901234567890123456789"|`mp| + "12345678901234567890123456789"|`mp|;
    21142108\end{cfa}
    2115 Because \CFA uses a standard function, all types and literals are applicable, as well as overloading and conversions.
     2109Because \CFA uses a standard function, all types and literals are applicable, as well as overloading and conversions, where @?`@ denotes a postfix-function name and @`@ denotes a postfix-function call.
    21162110}%
     2111\begin{cquote}
     2112\lstset{language=CFA,moredelim=**[is][\color{red}]{|}{|},deletedelim=**[is][]{`}{`}}
     2113\lstDeleteShortInline@%
     2114\begin{tabular}{@{}l@{\hspace{2\parindentlnth}}l@{\hspace{2\parindentlnth}}l@{\hspace{2\parindentlnth}}l@{}}
     2115\multicolumn{1}{c@{\hspace{2\parindentlnth}}}{\textbf{postfix function}}        & \multicolumn{1}{c@{\hspace{2\parindentlnth}}}{\textbf{constant}}      & \multicolumn{1}{c@{\hspace{2\parindentlnth}}}{\textbf{variable/expression}}   & \multicolumn{1}{c}{\textbf{postfix pointer}}  \\
     2116\begin{cfa}
     2117int ?`h( int s );
     2118int ?`h( double s );
     2119int ?`m( char c );
     2120int ?`m( const char * s );
     2121int ?`t( int a, int b, int c );
     2122\end{cfa}
     2123&
     2124\begin{cfa}
     21250 `h;
     21263.5`h;
     2127'1'`m;
     2128"123" "456"`m;
     2129[1,2,3]`t;
     2130\end{cfa}
     2131&
     2132\begin{cfa}
     2133int i = 7;
     2134i`h;
     2135(i + 3)`h;
     2136(i + 3.5)`h;
     2137
     2138\end{cfa}
     2139&
     2140\begin{cfa}
     2141int (* ?`p)( int i );
     2142?`p = ?`h;
     21433`p;
     2144i`p;
     2145(i + 3)`p;
     2146\end{cfa}
     2147\end{tabular}
     2148\lstMakeShortInline@%
     2149\end{cquote}
    21172150
    21182151The right of Figure~\ref{f:UserLiteral} shows the equivalent \CC version using the underscore for the call-syntax.
     
    21362169        return (W){ l.stones + r.stones };
    21372170}
    2138 W |?`st|( double w ) { return (W){ w }; }
    2139 W |?`lb|( double w ) { return (W){ w / 14.0 }; }
    2140 W |?`kg|( double w ) { return (W) { w * 0.16 }; }
     2171W |?`st|(double w) { return (W){ w }; }
     2172W |?`lb|(double w) { return (W){ w/14.0 }; }
     2173W |?`kg|(double w) { return (W){ w*0.16 }; }
    21412174
    21422175
     
    21542187\begin{cfa}
    21552188struct W {
    2156     double stones;
    2157     W() { stones = 0.0; }
    2158     W( double w ) { stones = w; }
     2189        double stones;
     2190        W() { stones = 0.0; }
     2191        W( double w ) { stones = w; }
    21592192};
    21602193W operator+( W l, W r ) {
    21612194        return W( l.stones + r.stones );
    21622195}
    2163 W |operator"" _st|( unsigned long long int w ) { return W( w ); }
    2164 W |operator"" _lb|( unsigned long long int w ) { return W( w / 14.0 ); }
    2165 W |operator"" _kg|( unsigned long long int w ) { return W( w * 0.16 ); }
    2166 W |operator"" _st|( long double w ) { return W( w ); }
    2167 W |operator"" _lb|( long double w ) { return W( w / 14.0 ); }
    2168 W |operator"" _kg|( long double w ) { return W( w * 0.16 ); }
     2196W |operator""_st|(unsigned long long int w) {return W(w); }
     2197W |operator""_lb|(unsigned long long int w) {return W(w/14.0); }
     2198W |operator""_kg|(unsigned long long int w) {return W(w*0.16); }
     2199W |operator""_st|(long double w ) { return W( w ); }
     2200W |operator""_lb|(long double w ) { return W( w / 14.0 ); }
     2201W |operator""_kg|(long double w ) { return W( w * 0.16 ); }
    21692202int main() {
    21702203        W w, heavy = { 20 };
     
    21992232\begin{cquote}
    22002233\lstDeleteShortInline@%
    2201 \begin{tabular}{@{}l@{\hspace{\parindentlnth}}l@{}}
    2202 \multicolumn{1}{c@{\hspace{\parindentlnth}}}{\textbf{Definition}}       & \multicolumn{1}{c}{\textbf{Usage}}    \\
     2234\begin{tabular}{@{}l@{\hspace{2\parindentlnth}}l@{}}
     2235\multicolumn{1}{c@{\hspace{2\parindentlnth}}}{\textbf{Definition}}      & \multicolumn{1}{c}{\textbf{Usage}}    \\
    22032236\begin{cfa}
    22042237const short int `MIN` = -32768;
     
    22182251\begin{cquote}
    22192252\lstDeleteShortInline@%
    2220 \lstset{basicstyle=\linespread{0.9}\sf\small}
    2221 \begin{tabular}{@{}l@{\hspace{0.5\parindentlnth}}l@{}}
    2222 \multicolumn{1}{c@{\hspace{0.5\parindentlnth}}}{\textbf{\CFA}}  & \multicolumn{1}{c}{\textbf{C}}        \\
     2253\begin{tabular}{@{}l@{\hspace{2\parindentlnth}}l@{}}
     2254\multicolumn{1}{c@{\hspace{2\parindentlnth}}}{\textbf{\CFA}}    & \multicolumn{1}{c}{\textbf{C}}        \\
    22232255\begin{cfa}
    22242256MIN
     2257
    22252258MAX
     2259
    22262260PI
    22272261E
     
    22292263&
    22302264\begin{cfa}
    2231 SCHAR_MIN, CHAR_MIN, SHRT_MIN, INT_MIN, LONG_MIN, LLONG_MIN, FLT_MIN, DBL_MIN, LDBL_MIN
    2232 SCHAR_MAX, UCHAR_MAX, SHRT_MAX, INT_MAX, LONG_MAX, LLONG_MAX, FLT_MAX, DBL_MAX, LDBL_MAX
     2265SCHAR_MIN, CHAR_MIN, SHRT_MIN, INT_MIN, LONG_MIN, LLONG_MIN,
     2266                FLT_MIN, DBL_MIN, LDBL_MIN
     2267SCHAR_MAX, UCHAR_MAX, SHRT_MAX, INT_MAX, LONG_MAX, LLONG_MAX,
     2268                FLT_MAX, DBL_MAX, LDBL_MAX
    22332269M_PI, M_PIl
    22342270M_E, M_El
     
    22452281\begin{cquote}
    22462282\lstDeleteShortInline@%
    2247 \begin{tabular}{@{}l@{\hspace{\parindentlnth}}l@{}}
    2248 \multicolumn{1}{c@{\hspace{\parindentlnth}}}{\textbf{Definition}}       & \multicolumn{1}{c}{\textbf{Usage}}    \\
     2283\begin{tabular}{@{}l@{\hspace{2\parindentlnth}}l@{}}
     2284\multicolumn{1}{c@{\hspace{2\parindentlnth}}}{\textbf{Definition}}      & \multicolumn{1}{c}{\textbf{Usage}}    \\
    22492285\begin{cfa}
    22502286float `log`( float x );
     
    22642300\begin{cquote}
    22652301\lstDeleteShortInline@%
    2266 \begin{tabular}{@{}l@{\hspace{\parindentlnth}}l@{}}
    2267 \multicolumn{1}{c@{\hspace{\parindentlnth}}}{\textbf{\CFA}}     & \multicolumn{1}{c}{\textbf{C}}        \\
     2302\begin{tabular}{@{}l@{\hspace{2\parindentlnth}}l@{}}
     2303\multicolumn{1}{c@{\hspace{2\parindentlnth}}}{\textbf{\CFA}}    & \multicolumn{1}{c}{\textbf{C}}        \\
    22682304\begin{cfa}
    22692305log
     
    22922328\begin{cquote}
    22932329\lstDeleteShortInline@%
    2294 \begin{tabular}{@{}l@{\hspace{\parindentlnth}}l@{}}
    2295 \multicolumn{1}{c@{\hspace{\parindentlnth}}}{\textbf{Definition}}       & \multicolumn{1}{c}{\textbf{Usage}}    \\
     2330\begin{tabular}{@{}l@{\hspace{2\parindentlnth}}l@{}}
     2331\multicolumn{1}{c@{\hspace{2\parindentlnth}}}{\textbf{Definition}}      & \multicolumn{1}{c}{\textbf{Usage}}    \\
    22962332\begin{cfa}
    22972333unsigned int `abs`( int );
     
    23112347\begin{cquote}
    23122348\lstDeleteShortInline@%
    2313 \begin{tabular}{@{}l@{\hspace{\parindentlnth}}l@{}}
    2314 \multicolumn{1}{c@{\hspace{\parindentlnth}}}{\textbf{\CFA}}     & \multicolumn{1}{c}{\textbf{C}}        \\
     2349\begin{tabular}{@{}l@{\hspace{2\parindentlnth}}l@{}}
     2350\multicolumn{1}{c@{\hspace{2\parindentlnth}}}{\textbf{\CFA}}    & \multicolumn{1}{c}{\textbf{C}}        \\
    23152351\begin{cfa}
    23162352abs
     
    23312367The following shows one example where \CFA \emph{extends} an existing standard C interface to reduce complexity and provide safety.
    23322368C/\Celeven provide a number of complex and overlapping storage-management operation to support the following capabilities:
    2333 \begin{description}[topsep=3pt,itemsep=2pt,parsep=0pt]
     2369\begin{description}%[topsep=3pt,itemsep=2pt,parsep=0pt]
    23342370\item[fill]
    23352371an allocation with a specified character.
     
    23812417\end{cfa}
    23822418\lstDeleteShortInline@%
    2383 \begin{tabular}{@{}l@{\hspace{\parindentlnth}}l@{}}
    2384 \multicolumn{1}{c@{\hspace{\parindentlnth}}}{\textbf{\CFA}}     & \multicolumn{1}{c}{\textbf{C}}        \\
     2419\begin{tabular}{@{}l@{\hspace{2\parindentlnth}}l@{}}
     2420\multicolumn{1}{c@{\hspace{2\parindentlnth}}}{\textbf{\CFA}}    & \multicolumn{1}{c}{\textbf{C}}        \\
    23852421\begin{cfa}
    23862422ip = alloc();
     
    24032439ip = (int *)malloc( sizeof( int ) ); memset( ip, fill, dim * sizeof( int ) );
    24042440ip = (int *)realloc( ip, 2 * dim * sizeof( int ) );
    2405 ip = (int *)realloc( ip, 4 * dim * sizeof( int ) ); memset( ip, fill, 4 * dim * sizeof( int ) );
    2406 
     2441ip = (int *)realloc( ip, 4 * dim * sizeof( int ) );
     2442                        memset( ip, fill, 4 * dim * sizeof( int ) );
    24072443ip = memalign( 16, sizeof( int ) );
    24082444ip = memalign( 16, sizeof( int ) ); memset( ip, fill, sizeof( int ) );
     
    24412477\begin{cquote}
    24422478\lstDeleteShortInline@%
    2443 \begin{tabular}{@{}l@{\hspace{\parindentlnth}}l@{}}
    2444 \multicolumn{1}{c@{\hspace{\parindentlnth}}}{\textbf{\CFA}}     & \multicolumn{1}{c}{\textbf{\CC}}      \\
     2479\begin{tabular}{@{}l@{\hspace{2\parindentlnth}}l@{}}
     2480\multicolumn{1}{c@{\hspace{2\parindentlnth}}}{\textbf{\CFA}}    & \multicolumn{1}{c}{\textbf{\CC}}      \\
    24452481\begin{cfa}
    24462482int x = 1, y = 2, z = 3;
     
    25252561The \CFA interface wraps GMP functions into operator functions to make programming with multi-precision integers identical to using fixed-sized integers.
    25262562The \CFA type name for multi-precision signed-integers is @Int@ and the header file is @gmp@.
    2527 The following multi-precision factorial programs contrast using GMP with the \CFA and C interfaces.
    2528 \begin{cquote}
     2563Figure~\ref{f:GMPInterface} shows a multi-precision factorial-program contrasting the GMP interface in \CFA and C.
     2564
     2565\begin{figure}
     2566\centering
    25292567\lstDeleteShortInline@%
    2530 \begin{tabular}{@{}l@{\hspace{\parindentlnth}}@{\hspace{\parindentlnth}}l@{}}
    2531 \multicolumn{1}{c@{\hspace{\parindentlnth}}}{\textbf{\CFA}}     & \multicolumn{1}{@{\hspace{\parindentlnth}}c}{\textbf{C}}      \\
     2568\begin{tabular}{@{}l@{\hspace{2\parindentlnth}}@{\hspace{2\parindentlnth}}l@{}}
     2569\multicolumn{1}{c@{\hspace{2\parindentlnth}}}{\textbf{\CFA}}    & \multicolumn{1}{@{\hspace{2\parindentlnth}}c}{\textbf{C}}     \\
    25322570\begin{cfa}
    25332571#include <gmp>
     
    25572595\end{tabular}
    25582596\lstMakeShortInline@%
    2559 \end{cquote}
     2597\caption{GMP Interface \CFA versus C}
     2598\label{f:GMPInterface}
     2599\end{figure}
    25602600
    25612601
     
    25662606In fact, \CFA's features for generic programming can enable faster runtime execution than idiomatic @void *@-based C code.
    25672607This claim is demonstrated through a set of generic-code-based micro-benchmarks in C, \CFA, and \CC (see stack implementations in Appendix~\ref{sec:BenchmarkStackImplementation}).
    2568 Since all these languages share a subset essentially comprising standard C, maximal-performance benchmarks would show little runtime variance, other than in length and clarity of source code.
    2569 A more illustrative benchmark measures the costs of idiomatic usage of each language's features.
    2570 Figure~\ref{fig:BenchmarkTest} shows the \CFA benchmark tests for a generic stack based on a singly linked-list, a generic pair-data-structure, and a variadic @print@ function similar to that in Section~\ref{sec:variadic-tuples}.
    2571 The benchmark test is similar for C and \CC.
    2572 The experiment uses element types @int@ and @pair(_Bool, char)@, and pushes $N=40M$ elements on a generic stack, copies the stack, clears one of the stacks, finds the maximum value in the other stack, and prints $N/2$ (to reduce graph height) constants.
     2608Since all these languages share a subset essentially comprising standard C, maximal-performance benchmarks should show little runtime variance, differing only in length and clarity of source code.
     2609A more illustrative comparison measures the costs of idiomatic usage of each language's features.
     2610Figure~\ref{fig:BenchmarkTest} shows the \CFA benchmark tests for a generic stack based on a singly linked-list.
     2611The benchmark test is similar for the other languages.
     2612The experiment uses element types @int@ and @pair(short, char)@, and pushes $N=40M$ elements on a generic stack, copies the stack, clears one of the stacks, and finds the maximum value in the other stack.
    25732613
    25742614\begin{figure}
    25752615\begin{cfa}[xleftmargin=3\parindentlnth,aboveskip=0pt,belowskip=0pt]
    2576 int main( int argc, char * argv[] ) {
     2616int main() {
    25772617        int max = 0, val = 42;
    25782618        stack( int ) si, ti;
    25792619
    25802620        REPEAT_TIMED( "push_int", N, push( si, val ); )
    2581         TIMED( "copy_int", ti = si; )
     2621        TIMED( "copy_int", ti{ si }; )
    25822622        TIMED( "clear_int", clear( si ); )
    25832623        REPEAT_TIMED( "pop_int", N, int x = pop( ti ); if ( x > max ) max = x; )
    25842624
    2585         pair( _Bool, char ) max = { (_Bool)0, '\0' }, val = { (_Bool)1, 'a' };
    2586         stack( pair( _Bool, char ) ) sp, tp;
     2625        pair( short, char ) max = { 0h, '\0' }, val = { 42h, 'a' };
     2626        stack( pair( short, char ) ) sp, tp;
    25872627
    25882628        REPEAT_TIMED( "push_pair", N, push( sp, val ); )
    2589         TIMED( "copy_pair", tp = sp; )
     2629        TIMED( "copy_pair", tp{ sp }; )
    25902630        TIMED( "clear_pair", clear( sp ); )
    2591         REPEAT_TIMED( "pop_pair", N, pair(_Bool, char) x = pop( tp ); if ( x > max ) max = x; )
     2631        REPEAT_TIMED( "pop_pair", N, pair(short, char) x = pop( tp ); if ( x > max ) max = x; )
    25922632}
    25932633\end{cfa}
     
    26002640hence runtime checks are necessary to safely down-cast objects.
    26012641The most notable difference among the implementations is in memory layout of generic types: \CFA and \CC inline the stack and pair elements into corresponding list and pair nodes, while C and \CCV lack such a capability and instead must store generic objects via pointers to separately-allocated objects.
    2602 For the print benchmark, idiomatic printing is used: the C and \CFA variants used @stdio.h@, while the \CC and \CCV variants used @iostream@; preliminary tests show this distinction has negligible runtime impact.
    2603 Note, the C benchmark uses unchecked casts as there is no runtime mechanism to perform such checks, while \CFA and \CC provide type-safety statically.
     2642Note that the C benchmark uses unchecked casts as there is no runtime mechanism to perform such checks, while \CFA and \CC provide type-safety statically.
    26042643
    26052644Figure~\ref{fig:eval} and Table~\ref{tab:eval} show the results of running the benchmark in Figure~\ref{fig:BenchmarkTest} and its C, \CC, and \CCV equivalents.
    26062645The graph plots the median of 5 consecutive runs of each program, with an initial warm-up run omitted.
    2607 All code is compiled at \texttt{-O2} by gcc or g++ 6.2.0, with all \CC code compiled as \CCfourteen.
     2646All code is compiled at \texttt{-O2} by gcc or g++ 6.3.0, with all \CC code compiled as \CCfourteen.
    26082647The benchmarks are run on an Ubuntu 16.04 workstation with 16 GB of RAM and a 6-core AMD FX-6300 CPU with 3.5 GHz maximum clock frequency.
    26092648
     
    26222661\begin{tabular}{rrrrr}
    26232662                                                                        & \CT{C}        & \CT{\CFA}     & \CT{\CC}      & \CT{\CCV}             \\ \hline
    2624 maximum memory usage (MB)                       & 10001         & 2502          & 2503          & 11253                 \\
    2625 source code size (lines)                        & 247           & 222           & 165           & 339                   \\
    2626 redundant type annotations (lines)      & 39            & 2                     & 2                     & 15                    \\
    2627 binary size (KB)                                        & 14            & 229           & 18            & 38                    \\
     2663maximum memory usage (MB)                       & 10,001        & 2,502         & 2,503         & 11,253                \\
     2664source code size (lines)                        & 196           & 186           & 125           & 290                   \\
     2665redundant type annotations (lines)      & 27            & 0                     & 2                     & 16                    \\
     2666binary size (KB)                                        & 14            & 257           & 14            & 37                    \\
    26282667\end{tabular}
    26292668\end{table}
    26302669
    26312670The C and \CCV variants are generally the slowest with the largest memory footprint, because of their less-efficient memory layout and the pointer-indirection necessary to implement generic types;
    2632 this inefficiency is exacerbated by the second level of generic types in the pair-based benchmarks.
    2633 By contrast, the \CFA and \CC variants run in roughly equivalent time for both the integer and pair of @_Bool@ and @char@ because the storage layout is equivalent, with the inlined libraries (\ie no separate compilation) and greater maturity of the \CC compiler contributing to its lead.
     2671this inefficiency is exacerbated by the second level of generic types in the pair benchmarks.
     2672By contrast, the \CFA and \CC variants run in roughly equivalent time for both the integer and pair of @short@ and @char@ because the storage layout is equivalent, with the inlined libraries (\ie no separate compilation) and greater maturity of the \CC compiler contributing to its lead.
    26342673\CCV is slower than C largely due to the cost of runtime type-checking of down-casts (implemented with @dynamic_cast@);
    2635 There are two outliers in the graph for \CFA: all prints and pop of @pair@.
    2636 Both of these cases result from the complexity of the C-generated polymorphic code, so that the gcc compiler is unable to optimize some dead code and condense nested calls.
    2637 A compiler designed for \CFA could easily perform these optimizations.
     2674The outlier in the graph for \CFA, pop @pair@, results from the complexity of the generated-C polymorphic code.
     2675The gcc compiler is unable to optimize some dead code and condense nested calls; a compiler designed for \CFA could easily perform these optimizations.
    26382676Finally, the binary size for \CFA is larger because of static linking with the \CFA libraries.
    26392677
    2640 \CFA is also competitive in terms of source code size, measured as a proxy for programmer effort. The line counts in Table~\ref{tab:eval} include implementations of @pair@ and @stack@ types for all four languages for purposes of direct comparison, though it should be noted that \CFA and \CC have pre-written data structures in their standard libraries that programmers would generally use instead. Use of these standard library types has minimal impact on the performance benchmarks, but shrinks the \CFA and \CC benchmarks to 73 and 54 lines, respectively.
     2678\CFA is also competitive in terms of source code size, measured as a proxy for programmer effort. The line counts in Table~\ref{tab:eval} include implementations of @pair@ and @stack@ types for all four languages for purposes of direct comparison, though it should be noted that \CFA and \CC have pre-written data structures in their standard libraries that programmers would generally use instead. Use of these standard library types has minimal impact on the performance benchmarks, but shrinks the \CFA and \CC benchmarks to 39 and 42 lines, respectively.
     2679The difference between the \CFA and \CC line counts is primarily declaration duplication to implement separate compilation; a header-only \CFA library would be similar in length to the \CC version.
    26412680On the other hand, C does not have a generic collections-library in its standard distribution, resulting in frequent reimplementation of such collection types by C programmers.
    2642 \CCV does not use the \CC standard template library by construction, and in fact includes the definition of @object@ and wrapper classes for @bool@, @char@, @int@, and @const char *@ in its line count, which inflates this count somewhat, as an actual object-oriented language would include these in the standard library;
     2681\CCV does not use the \CC standard template library by construction, and in fact includes the definition of @object@ and wrapper classes for @char@, @short@, and @int@ in its line count, which inflates this count somewhat, as an actual object-oriented language would include these in the standard library;
    26432682with their omission, the \CCV line count is similar to C.
    26442683We justify the given line count by noting that many object-oriented languages do not allow implementing new interfaces on library types without subclassing or wrapper types, which may be similarly verbose.
    26452684
    2646 Raw line-count, however, is a fairly rough measure of code complexity;
    2647 another important factor is how much type information the programmer must manually specify, especially where that information is not checked by the compiler.
    2648 Such unchecked type information produces a heavier documentation burden and increased potential for runtime bugs, and is much less common in \CFA than C, with its manually specified function pointers arguments and format codes, or \CCV, with its extensive use of un-type-checked downcasts (\eg @object@ to @integer@ when popping a stack, or @object@ to @printable@ when printing the elements of a @pair@).
    2649 To quantify this, the ``redundant type annotations'' line in Table~\ref{tab:eval} counts the number of lines on which the type of a known variable is re-specified, either as a format specifier, explicit downcast, type-specific function, or by name in a @sizeof@, struct literal, or @new@ expression.
     2685Line-count is a fairly rough measure of code complexity;
     2686another important factor is how much type information the programmer must specify manually, especially where that information is not compiler-checked.
     2687Such unchecked type information produces a heavier documentation burden and increased potential for runtime bugs, and is much less common in \CFA than C, with its manually specified function pointer arguments and format codes, or \CCV, with its extensive use of untype-checked downcasts, \eg @object@ to @integer@ when popping a stack.
     2688To quantify this manual typing, the ``redundant type annotations'' line in Table~\ref{tab:eval} counts the number of lines on which the type of a known variable is respecified, either as a format specifier, explicit downcast, type-specific function, or by name in a @sizeof@, struct literal, or @new@ expression.
    26502689The \CC benchmark uses two redundant type annotations to create a new stack nodes, while the C and \CCV benchmarks have several such annotations spread throughout their code.
    2651 The two instances in which the \CFA benchmark still uses redundant type specifiers are to cast the result of a polymorphic @malloc@ call (the @sizeof@ argument is inferred by the compiler).
    2652 These uses are similar to the @new@ expressions in \CC, though the \CFA compiler's type resolver should shortly render even these type casts superfluous.
     2690The \CFA benchmark is able to eliminate all redundant type annotations through use of the polymorphic @alloc@ function discussed in Section~\ref{sec:libraries}.
    26532691
    26542692
     
    26582696\subsection{Polymorphism}
    26592697
    2660 \CC is the most similar language to \CFA;
    2661 both are extensions to C with source and runtime backwards compatibility.
    2662 The fundamental difference is the engineering approach to maintain C compatibility and programmer expectation.
    2663 While \CC provides good compatibility with C, it has a steep learning curve for many of its extensions.
    2664 For example, polymorphism is provided via three disjoint mechanisms: overloading, inheritance, and templates.
     2698\CC provides three disjoint polymorphic extensions to C: overloading, inheritance, and templates.
    26652699The overloading is restricted because resolution does not use the return type, inheritance requires learning object-oriented programming and coping with a restricted nominal-inheritance hierarchy, templates cannot be separately compiled resulting in compilation/code bloat and poor error messages, and determining how these mechanisms interact and which to use is confusing.
    26662700In contrast, \CFA has a single facility for polymorphic code supporting type-safe separate-compilation of polymorphic functions and generic (opaque) types, which uniformly leverage the C procedural paradigm.
     
    27172751
    27182752
     2753\subsection{C Extensions}
     2754
     2755\CC is the best known C-based language, and is similar to \CFA in that both are extensions to C with source and runtime backwards compatibility.
     2756Specific difference between \CFA and \CC have been identified in prior sections, with a final observation that \CFA has equal or fewer tokens to express the same notion in many cases.
     2757The key difference in design philosophies is that \CFA is easier for C programmers to understand by maintaining a procedural paradigm and avoiding complex interactions among extensions.
     2758\CC, on the other hand, has multiple overlapping features (such as the three forms of polymorphism), many of which have complex interactions with its object-oriented design.
     2759As a result, \CC has a steep learning curve for even experienced C programmers, especially when attempting to maintain performance equivalent to C legacy-code.
     2760
     2761There are several other C extension-languages with less usage and even more dramatic changes than \CC.
     2762Objective-C and Cyclone are two other extensions to C with different design goals than \CFA, as discussed above.
     2763Other languages extend C with more focused features.
     2764$\mu$\CC~\cite{uC++book}, CUDA~\cite{Nickolls08}, ispc~\cite{Pharr12}, and Sierra~\cite{Leissa14} add concurrent or data-parallel primitives to C or \CC;
     2765data-parallel features have not yet been added to \CFA, but are easily incorporated within its design, while concurrency primitives similar to those in $\mu$\CC have already been added~\cite{Delisle18}.
     2766Finally, CCured~\cite{Necula02} and Ironclad \CC~\cite{DeLozier13} attempt to provide a more memory-safe C by annotating pointer types with garbage collection information; type-checked polymorphism in \CFA covers several of C's memory-safety issues, but more aggressive approaches such as annotating all pointer types with their nullability or requiring runtime garbage collection are contradictory to \CFA's backwards compatibility goals.
     2767
     2768
     2769\begin{comment}
    27192770\subsection{Control Structures / Declarations / Literals}
    27202771
     
    273427850/1 Literals \\
    27352786user defined: D, Objective-C
     2787\end{comment}
    27362788
    27372789
     
    27482800Finally, we demonstrate that \CFA performance for some idiomatic cases is better than C and close to \CC, showing the design is practically applicable.
    27492801
    2750 There is ongoing work on a wide range of \CFA feature extensions, including arrays with size, runtime type-information, virtual functions, user-defined conversions, concurrent primitives, and modules.
    2751 (While all examples in the paper compile and run, a public beta-release of \CFA will take another 8--12 months to finalize these additional extensions.)
    2752 In addition, there are interesting future directions for the polymorphism design.
     2802There is ongoing work on a wide range of \CFA features, including arrays with size, runtime type-information, virtual functions, user-defined conversions, concurrent primitives, and modules.
     2803While all examples in the paper compile and run, a public beta-release of \CFA will take another 8--12 months to finalize these extensions.
     2804There are also interesting future directions for the polymorphism design.
    27532805Notably, \CC template functions trade compile time and code bloat for optimal runtime of individual instantiations of polymorphic functions.
    27542806\CFA polymorphic functions use dynamic virtual-dispatch;
     
    27612813\section{Acknowledgments}
    27622814
    2763 The authors would like to recognize the design assistance of Glen Ditchfield, Richard Bilson, Thierry Delisle, and Andrew Beach on the features described in this paper, and thank Magnus Madsen for feedback in the writing.
    2764 This work is supported through a corporate partnership with Huawei Ltd.\ (\url{http://www.huawei.com}), and Aaron Moss and Peter Buhr are partially funded by the Natural Sciences and Engineering Research Council of Canada.
    2765 
    2766 % the first author's \grantsponsor{NSERC-PGS}{NSERC PGS D}{http://www.nserc-crsng.gc.ca/Students-Etudiants/PG-CS/BellandPostgrad-BelletSuperieures_eng.asp} scholarship.
    2767 
    2768 
    2769 \bibliographystyle{plain}
     2815The authors would like to recognize the design assistance of Glen Ditchfield, Richard Bilson, Thierry Delisle, Andrew Beach and Brice Dobry on the features described in this paper, and thank Magnus Madsen for feedback on the writing.
     2816This work is supported by a corporate partnership with Huawei Ltd.\ (\url{http://www.huawei.com}), and Aaron Moss and Peter Buhr are partially funded by the Natural Sciences and Engineering Research Council of Canada.
     2817
     2818
    27702819\bibliography{pl}
    27712820
     
    27762825\label{sec:BenchmarkStackImplementation}
    27772826
    2778 \lstset{basicstyle=\linespread{0.9}\sf\small}
    2779 
    2780 Throughout, @/***/@ designates a counted redundant type annotation.
     2827Throughout, @/***/@ designates a counted redundant type annotation; code reformatted for brevity.
    27812828
    27822829\smallskip\noindent
     2830C
     2831\begin{cfa}[xleftmargin=2\parindentlnth,aboveskip=0pt,belowskip=0pt]
     2832struct stack_node {
     2833        void * value;
     2834        struct stack_node * next;
     2835};
     2836struct stack { struct stack_node* head; };
     2837void clear_stack( struct stack * s, void (*free_el)( void * ) ) {
     2838        for ( struct stack_node * next = s->head; next; ) {
     2839                struct stack_node * crnt = next;
     2840                next = crnt->next;
     2841                free_el( crnt->value );
     2842                free( crnt );
     2843        }
     2844        s->head = NULL;
     2845}
     2846struct stack new_stack() { return (struct stack){ NULL }; /***/ }
     2847void copy_stack( struct stack * s, const struct stack * t, void * (*copy)( const void * ) ) {
     2848        struct stack_node ** crnt = &s->head;
     2849        for ( struct stack_node * next = t->head; next; next = next->next ) {
     2850                *crnt = malloc( sizeof(struct stack_node) ); /***/
     2851                (*crnt)->value = copy( next->value );
     2852                crnt = &(*crnt)->next;
     2853        }
     2854        *crnt = NULL;
     2855}
     2856struct stack * assign_stack( struct stack * s, const struct stack * t,
     2857                void * (*copy_el)( const void * ), void (*free_el)( void * ) ) {
     2858        if ( s->head == t->head ) return s;
     2859        clear_stack( s, free_el ); /***/
     2860        copy_stack( s, t, copy_el ); /***/
     2861        return s;
     2862}
     2863_Bool stack_empty( const struct stack * s ) { return s->head == NULL; }
     2864void push_stack( struct stack * s, void * v ) {
     2865        struct stack_node * n = malloc( sizeof(struct stack_node) ); /***/
     2866        *n = (struct stack_node){ v, s->head }; /***/
     2867        s->head = n;
     2868}
     2869void * pop_stack( struct stack * s ) {
     2870        struct stack_node * n = s->head;
     2871        s->head = n->next;
     2872        void * v = n->value;
     2873        free( n );
     2874        return v;
     2875}
     2876\end{cfa}
     2877
     2878\medskip\noindent
    27832879\CFA
    27842880\begin{cfa}[xleftmargin=2\parindentlnth,aboveskip=0pt,belowskip=0pt]
    2785 forall( otype T ) struct stack_node;
    2786 forall( otype T ) struct stack {
    2787         stack_node(T) * head;
    2788 };
    27892881forall( otype T ) struct stack_node {
    27902882        T value;
    27912883        stack_node(T) * next;
    27922884};
    2793 forall( otype T) void ?{}( stack(T) & s ) { (s.head){ 0 }; }
    2794 forall( otype T) void ?{}( stack(T) & s, stack(T) t ) {
     2885forall( otype T ) struct stack { stack_node(T) * head; };
     2886forall( otype T ) void clear( stack(T) & s ) with( s ) {
     2887        for ( stack_node(T) * next = head; next; ) {
     2888                stack_node(T) * crnt = next;
     2889                next = crnt->next;
     2890                ^(*crnt){};
     2891                free(crnt);
     2892        }
     2893        head = 0;
     2894}
     2895forall( otype T ) void ?{}( stack(T) & s ) { (s.head){ 0 }; }
     2896forall( otype T ) void ?{}( stack(T) & s, stack(T) t ) {
    27952897        stack_node(T) ** crnt = &s.head;
    27962898        for ( stack_node(T) * next = t.head; next; next = next->next ) {
    2797                 stack_node(T) * new_node = ((stack_node(T)*)malloc());
    2798                 (*new_node){ next->value }; /***/
    2799                 *crnt = new_node;
    2800                 stack_node(T) * acrnt = *crnt;
    2801                 crnt = &acrnt->next;
     2899                *crnt = alloc();
     2900                ((*crnt)->value){ next->value };
     2901                crnt = &(*crnt)->next;
    28022902        }
    28032903        *crnt = 0;
     
    28112911forall( otype T ) void ^?{}( stack(T) & s) { clear( s ); }
    28122912forall( otype T ) _Bool empty( const stack(T) & s ) { return s.head == 0; }
    2813 forall( otype T ) void push( stack(T) & s, T value ) {
    2814         stack_node(T) * new_node = ((stack_node(T)*)malloc());
    2815         (*new_node){ value, s.head }; /***/
    2816         s.head = new_node;
    2817 }
    2818 forall( otype T ) T pop( stack(T) & s ) {
    2819         stack_node(T) * n = s.head;
    2820         s.head = n->next;
     2913forall( otype T ) void push( stack(T) & s, T value ) with( s ) {
     2914        stack_node(T) * n = alloc();
     2915        (*n){ value, head };
     2916        head = n;
     2917}
     2918forall( otype T ) T pop( stack(T) & s ) with( s ) {
     2919        stack_node(T) * n = head;
     2920        head = n->next;
    28212921        T v = n->value;
    2822         delete( n );
     2922        ^(*n){};
     2923        free( n );
    28232924        return v;
    28242925}
    2825 forall( otype T ) void clear( stack(T) & s ) {
    2826         for ( stack_node(T) * next = s.head; next; ) {
    2827                 stack_node(T) * crnt = next;
    2828                 next = crnt->next;
    2829                 delete( crnt );
     2926\end{cfa}
     2927
     2928\begin{comment}
     2929forall( otype T ) {
     2930        struct stack_node {
     2931                T value;
     2932                stack_node(T) * next;
     2933        };
     2934        struct stack { stack_node(T) * head; };
     2935        void clear( stack(T) & s ) with( s ) {
     2936                for ( stack_node(T) * next = head; next; ) {
     2937                        stack_node(T) * crnt = next;
     2938                        next = crnt->next;
     2939                        ^(*crnt){};
     2940                        free(crnt);
     2941                }
     2942                head = 0;
    28302943        }
    2831         s.head = 0;
    2832 }
    2833 \end{cfa}
     2944        void ?{}( stack(T) & s ) { (s.head){ 0 }; }
     2945        void ?{}( stack(T) & s, stack(T) t ) {
     2946                stack_node(T) ** crnt = &s.head;
     2947                for ( stack_node(T) * next = t.head; next; next = next->next ) {
     2948                        *crnt = alloc();
     2949                        ((*crnt)->value){ next->value };
     2950                        crnt = &(*crnt)->next;
     2951                }
     2952                *crnt = 0;
     2953        }
     2954        stack(T) ?=?( stack(T) & s, stack(T) t ) {
     2955                if ( s.head == t.head ) return s;
     2956                clear( s );
     2957                s{ t };
     2958                return s;
     2959        }
     2960        void ^?{}( stack(T) & s) { clear( s ); }
     2961        _Bool empty( const stack(T) & s ) { return s.head == 0; }
     2962        void push( stack(T) & s, T value ) with( s ) {
     2963                stack_node(T) * n = alloc();
     2964                (*n){ value, head };
     2965                head = n;
     2966        }
     2967        T pop( stack(T) & s ) with( s ) {
     2968                stack_node(T) * n = head;
     2969                head = n->next;
     2970                T v = n->value;
     2971                ^(*n){};
     2972                free( n );
     2973                return v;
     2974        }
     2975}
     2976\end{comment}
    28342977
    28352978\medskip\noindent
    28362979\CC
    28372980\begin{cfa}[xleftmargin=2\parindentlnth,aboveskip=0pt,belowskip=0pt]
    2838 template<typename T> class stack {
     2981template<typename T> struct stack {
    28392982        struct node {
    28402983                T value;
    28412984                node * next;
    2842                 node( const T & v, node * n = nullptr ) : value(v), next(n) {}
     2985                node( const T & v, node * n = nullptr ) : value( v ), next( n ) {}
    28432986        };
    28442987        node * head;
    2845         void copy(const stack<T>& o) {
    2846                 node ** crnt = &head;
    2847                 for ( node * next = o.head;; next; next = next->next ) {
    2848                         *crnt = new node{ next->value }; /***/
    2849                         crnt = &(*crnt)->next;
    2850                 }
    2851                 *crnt = nullptr;
    2852         }
    2853   public:
    2854         stack() : head(nullptr) {}
    2855         stack(const stack<T>& o) { copy(o); }
    2856         stack(stack<T> && o) : head(o.head) { o.head = nullptr; }
    2857         ~stack() { clear(); }
    2858         stack & operator= (const stack<T>& o) {
    2859                 if ( this == &o ) return *this;
    2860                 clear();
    2861                 copy(o);
    2862                 return *this;
    2863         }
    2864         stack & operator= (stack<T> && o) {
    2865                 if ( this == &o ) return *this;
    2866                 head = o.head;
    2867                 o.head = nullptr;
    2868                 return *this;
    2869         }
    2870         bool empty() const { return head == nullptr; }
    2871         void push(const T & value) { head = new node{ value, head };  /***/ }
    2872         T pop() {
    2873                 node * n = head;
    2874                 head = n->next;
    2875                 T x = std::move(n->value);
    2876                 delete n;
    2877                 return x;
    2878         }
     2988        stack() : head( nullptr ) {}
     2989        stack( const stack<T> & o ) { copy( o ); }
    28792990        void clear() {
    28802991                for ( node * next = head; next; ) {
     
    28852996                head = nullptr;
    28862997        }
     2998        void copy( const stack<T> & o ) {
     2999                node ** crnt = &head;
     3000                for ( node * next = o.head; next; next = next->next ) {
     3001                        *crnt = new node{ next->value }; /***/
     3002                        crnt = &(*crnt)->next;
     3003                }
     3004                *crnt = nullptr;
     3005        }
     3006        ~stack() { clear(); }
     3007        stack & operator= ( const stack<T> & o ) {
     3008                if ( this == &o ) return *this;
     3009                clear();
     3010                copy( o );
     3011                return *this;
     3012        }
     3013        bool empty() const { return head == nullptr; }
     3014        void push( const T & value ) { head = new node{ value, head };  /***/ }
     3015        T pop() {
     3016                node * n = head;
     3017                head = n->next;
     3018                T v = std::move( n->value );
     3019                delete n;
     3020                return v;
     3021        }
    28873022};
    2888 \end{cfa}
    2889 
    2890 \medskip\noindent
    2891 C
    2892 \begin{cfa}[xleftmargin=2\parindentlnth,aboveskip=0pt,belowskip=0pt]
    2893 struct stack_node {
    2894         void * value;
    2895         struct stack_node * next;
    2896 };
    2897 struct stack new_stack() { return (struct stack){ NULL }; /***/ }
    2898 void copy_stack(struct stack * s, const struct stack * t, void * (*copy)(const void *)) {
    2899         struct stack_node ** crnt = &s->head;
    2900         for ( struct stack_node * next = t->head; next; next = next->next ) {
    2901                 *crnt = malloc(sizeof(struct stack_node)); /***/
    2902                 **crnt = (struct stack_node){ copy(next->value) }; /***/
    2903                 crnt = &(*crnt)->next;
    2904         }
    2905         *crnt = 0;
    2906 }
    2907 _Bool stack_empty(const struct stack * s) { return s->head == NULL; }
    2908 void push_stack(struct stack * s, void * value) {
    2909         struct stack_node * n = malloc(sizeof(struct stack_node)); /***/
    2910         *n = (struct stack_node){ value, s->head }; /***/
    2911         s->head = n;
    2912 }
    2913 void * pop_stack(struct stack * s) {
    2914         struct stack_node * n = s->head;
    2915         s->head = n->next;
    2916         void * x = n->value;
    2917         free(n);
    2918         return x;
    2919 }
    2920 void clear_stack(struct stack * s, void (*free_el)(void *)) {
    2921         for ( struct stack_node * next = s->head; next; ) {
    2922                 struct stack_node * crnt = next;
    2923                 next = crnt->next;
    2924                 free_el(crnt->value);
    2925                 free(crnt);
    2926         }
    2927         s->head = NULL;
    2928 }
    29293023\end{cfa}
    29303024
     
    29323026\CCV
    29333027\begin{cfa}[xleftmargin=2\parindentlnth,aboveskip=0pt,belowskip=0pt]
    2934 stack::node::node( const object & v, node * n ) : value( v.new_copy() ), next( n ) {}
    2935 void stack::copy(const stack & o) {
    2936         node ** crnt = &head;
    2937         for ( node * next = o.head; next; next = next->next ) {
    2938                 *crnt = new node{ *next->value };
    2939                 crnt = &(*crnt)->next;
     3028struct stack {
     3029        struct node {
     3030                ptr<object> value;
     3031                node * next;
     3032                node( const object & v, node * n = nullptr ) : value( v.new_copy() ), next( n ) {}
     3033        };
     3034        node * head;
     3035        void clear() {
     3036                for ( node * next = head; next; ) {
     3037                        node * crnt = next;
     3038                        next = crnt->next;
     3039                        delete crnt;
     3040                }
     3041                head = nullptr;
    29403042        }
    2941         *crnt = nullptr;
    2942 }
    2943 stack::stack() : head(nullptr) {}
    2944 stack::stack(const stack & o) { copy(o); }
    2945 stack::stack(stack && o) : head(o.head) { o.head = nullptr; }
    2946 stack::~stack() { clear(); }
    2947 stack & stack::operator= (const stack & o) {
    2948         if ( this == &o ) return *this;
    2949         clear();
    2950         copy(o);
    2951         return *this;
    2952 }
    2953 stack & stack::operator= (stack && o) {
    2954         if ( this == &o ) return *this;
    2955         head = o.head;
    2956         o.head = nullptr;
    2957         return *this;
    2958 }
    2959 bool stack::empty() const { return head == nullptr; }
    2960 void stack::push(const object & value) { head = new node{ value, head }; /***/ }
    2961 ptr<object> stack::pop() {
    2962         node * n = head;
    2963         head = n->next;
    2964         ptr<object> x = std::move(n->value);
    2965         delete n;
    2966         return x;
    2967 }
    2968 void stack::clear() {
    2969         for ( node * next = head; next; ) {
    2970                 node * crnt = next;
    2971                 next = crnt->next;
    2972                 delete crnt;
     3043        void copy( const stack & o ) {
     3044                node ** crnt = &head;
     3045                for ( node * next = o.head; next; next = next->next ) {
     3046                        *crnt = new node{ *next->value }; /***/
     3047                        crnt = &(*crnt)->next;
     3048                }
     3049                *crnt = nullptr;
    29733050        }
    2974         head = nullptr;
    2975 }
     3051        stack() : head( nullptr ) {}
     3052        stack( const stack & o ) { copy( o ); }
     3053        ~stack() { clear(); }
     3054        stack & operator= ( const stack & o ) {
     3055                if ( this == &o ) return *this;
     3056                clear();
     3057                copy( o );
     3058                return *this;
     3059        }
     3060        bool empty() const { return head == nullptr; }
     3061        void push( const object & value ) { head = new node{ value, head }; /***/ }
     3062        ptr<object> pop() {
     3063                node * n = head;
     3064                head = n->next;
     3065                ptr<object> v = std::move( n->value );
     3066                delete n;
     3067                return v;
     3068        }
     3069};
    29763070\end{cfa}
    29773071
  • doc/papers/general/evaluation/c-bench.c

    rb2fe1c9 r32cab5b  
    55#include "c-stack.h"
    66
    7 _Bool* new_bool( _Bool b ) {
    8         _Bool* q = malloc(sizeof(_Bool)); /***/
    9         *q = b;
     7char* new_char( char c ) {
     8        char* q = malloc(sizeof(char)); /***/
     9        *q = c;
    1010        return q;
    1111}
    1212
    13 char* new_char( char c ) {
    14         char* q = malloc(sizeof(char)); /***/
    15         *q = c;
     13short* new_short( short s ) {
     14        short* q = malloc(sizeof(short)); /***/
     15        *q = s;
    1616        return q;
    1717}
     
    2323}
    2424
    25 void* copy_bool( const void* p ) { return new_bool( *(const _Bool*)p ); } /***/
    2625void* copy_char( const void* p ) { return new_char( *(const char*)p ); } /***/
     26void* copy_short( const void* p ) { return new_short( *(const short*)p ); } /***/
    2727void* copy_int( const void* p ) { return new_int( *(const int*)p ); } /***/
    28 void* copy_pair_bool_char( const void* p ) { return copy_pair( p, copy_bool, copy_char ); } /***/
    29 void free_pair_bool_char( void* p ) { free_pair( p, free, free ); } /***/
    30 
    31 int cmp_bool( const void* a, const void* b ) { /***/
    32         return *(const _Bool*)a == *(const _Bool*)b ? 0 : *(const _Bool*)a < *(const _Bool*)b ? -1 : 1;
    33 }
     28void* copy_pair_short_char( const void* p ) { return copy_pair( p, copy_short, copy_char ); } /***/
     29void free_pair_short_char( void* p ) { free_pair( p, free, free ); } /***/
    3430
    3531int cmp_char( const void* a, const void* b ) { /***/
    3632        return *(const char*)a == *(const char*)b ? 0 : *(const char*)a < *(const char*)b ? -1 : 1;
     33}
     34
     35int cmp_short( const void* a, const void* b ) { /***/
     36        return *(const short*)a == *(const short*)b ? 0 : *(const short*)a < *(const short*)b ? -1 : 1;
    3737}
    3838
     
    4949                free(xi); )
    5050
    51         struct pair * maxp = new_pair( new_bool(0), new_char('\0') ),
    52                 * valp = new_pair( new_bool(1), new_char('a') );
     51        struct pair * maxp = new_pair( new_short(0), new_char('\0') ),
     52                * valp = new_pair( new_short(42), new_char('a') );
    5353        struct stack sp = new_stack(), tp;
    5454
    55         REPEAT_TIMED( "push_pair", N, push_stack( &sp, copy_pair_bool_char( valp ) ); )
    56         TIMED( "copy_pair", copy_stack( &tp, &sp, copy_pair_bool_char ); /***/ )
    57         TIMED( "clear_pair", clear_stack( &sp, free_pair_bool_char ); /***/ )
     55        REPEAT_TIMED( "push_pair", N, push_stack( &sp, copy_pair_short_char( valp ) ); )
     56        TIMED( "copy_pair", copy_stack( &tp, &sp, copy_pair_short_char ); /***/ )
     57        TIMED( "clear_pair", clear_stack( &sp, free_pair_short_char ); /***/ )
    5858        REPEAT_TIMED( "pop_pair", N,
    5959                struct pair * xp = pop_stack( &tp );
    60                 if ( cmp_pair( xp, maxp, cmp_bool, cmp_char /***/ ) > 0 ) {
    61                         free_pair_bool_char( maxp ); /***/
     60                if ( cmp_pair( xp, maxp, cmp_short, cmp_char /***/ ) > 0 ) {
     61                        free_pair_short_char( maxp ); /***/
    6262                        maxp = xp;
    6363                } else {
    64                         free_pair_bool_char( xp ); /***/
     64                        free_pair_short_char( xp ); /***/
    6565                } )
    66         free_pair_bool_char( maxp ); /***/
    67         free_pair_bool_char( valp ); /***/
     66        free_pair_short_char( maxp ); /***/
     67        free_pair_short_char( valp ); /***/
    6868}
  • doc/papers/general/evaluation/c-stack.c

    rb2fe1c9 r32cab5b  
    33
    44struct stack_node {
    5         void* value;
    6         struct stack_node* next;
     5        void * value;
     6        struct stack_node * next;
    77};
    88
    9 struct stack new_stack() { return (struct stack){ NULL }; /***/ }
    10 
    11 void copy_stack(struct stack* s, const struct stack* t, void* (*copy)(const void*)) {
    12         struct stack_node** crnt = &s->head;
    13         for ( struct stack_node* next = t->head; next; next = next->next ) {
    14                 *crnt = malloc(sizeof(struct stack_node)); /***/
    15                 **crnt = (struct stack_node){ copy(next->value) }; /***/
    16                 crnt = &(*crnt)->next;
    17         }
    18         *crnt = 0;
    19 }
    20 
    21 void clear_stack(struct stack* s, void (*free_el)(void*)) {
    22     for ( struct stack_node* next = s->head; next; ) {
    23                 struct stack_node* crnt = next;
     9void clear_stack( struct stack * s, void (*free_el)( void * ) ) {
     10        for ( struct stack_node * next = s->head; next; ) {
     11                struct stack_node * crnt = next;
    2412                next = crnt->next;
    25                 free_el(crnt->value);
    26                 free(crnt);
     13                free_el( crnt->value );
     14                free( crnt );
    2715        }
    2816        s->head = NULL;
    2917}
    3018
    31 _Bool stack_empty(const struct stack* s) { return s->head == NULL; }
     19struct stack new_stack() { return (struct stack){ NULL }; /***/ }
    3220
    33 void push_stack(struct stack* s, void* value) {
    34         struct stack_node* n = malloc(sizeof(struct stack_node)); /***/
    35         *n = (struct stack_node){ value, s->head }; /***/
     21void copy_stack( struct stack * s, const struct stack * t, void * (*copy)( const void * ) ) {
     22        struct stack_node ** crnt = &s->head;
     23        for ( struct stack_node * next = t->head; next; next = next->next ) {
     24                *crnt = malloc( sizeof(struct stack_node) ); /***/
     25                (*crnt)->value = copy( next->value );
     26                crnt = &(*crnt)->next;
     27        }
     28        *crnt = NULL;
     29}
     30struct stack * assign_stack( struct stack * s, const struct stack * t,
     31                void * (*copy_el)( const void * ), void (*free_el)( void * ) ) {
     32        if ( s->head == t->head ) return s;
     33        clear_stack( s, free_el ); /***/
     34        copy_stack( s, t, copy_el ); /***/
     35        return s;
     36}
     37
     38_Bool stack_empty( const struct stack * s ) { return s->head == NULL; }
     39
     40void push_stack( struct stack * s, void * v ) {
     41        struct stack_node * n = malloc( sizeof(struct stack_node) ); /***/
     42        *n = (struct stack_node){ v, s->head }; /***/
    3643        s->head = n;
    3744}
    3845
    39 void* pop_stack(struct stack* s) {
    40         struct stack_node* n = s->head;
     46void * pop_stack( struct stack * s ) {
     47        struct stack_node * n = s->head;
    4148        s->head = n->next;
    42         void* x = n->value;
    43         free(n);
    44         return x;
     49        void * v = n->value;
     50        free( n );
     51        return v;
    4552}
  • doc/papers/general/evaluation/c-stack.h

    rb2fe1c9 r32cab5b  
    88struct stack new_stack();
    99void copy_stack(struct stack* dst, const struct stack* src, void* (*copy)(const void*));
     10struct stack* assign_stack(struct stack* dst, const struct stack* src,
     11        void* (*copy_el)(const void*), void (*free_el)(void*));
    1012void clear_stack(struct stack* s, void (*free_el)(void*));
    1113
  • doc/papers/general/evaluation/cfa-bench.c

    rb2fe1c9 r32cab5b  
    33#include "cfa-pair.h"
    44
    5 int main( int argc, char * argv[] ) {
     5int main() {
    66        int max = 0, val = 42;
    77        stack( int ) si, ti;
    88
    99        REPEAT_TIMED( "push_int", N, push( si, val ); )
    10         TIMED( "copy_int", ti = si; )
     10        TIMED( "copy_int", ti{ si }; )
    1111        TIMED( "clear_int", clear( si ); )
    12         REPEAT_TIMED( "pop_int", N,
    13                 int x = pop( ti ); if ( x > max ) max = x; )
     12        REPEAT_TIMED( "pop_int", N, int x = pop( ti ); if ( x > max ) max = x; )
    1413
    15         pair( _Bool, char ) max = { (_Bool)0 /***/, '\0' }, val = { (_Bool)1 /***/, 'a' };
    16         stack( pair( _Bool, char ) ) sp, tp;
     14        pair( short, char ) max = { 0h, '\0' }, val = { 42h, 'a' };
     15        stack( pair( short, char ) ) sp, tp;
    1716
    1817        REPEAT_TIMED( "push_pair", N, push( sp, val ); )
    19         TIMED( "copy_pair", tp = sp; )
     18        TIMED( "copy_pair", tp{ sp }; )
    2019        TIMED( "clear_pair", clear( sp ); )
    21         REPEAT_TIMED( "pop_pair", N,
    22                 pair(_Bool, char) x = pop( tp ); if ( x > max ) max = x; )
     20        REPEAT_TIMED( "pop_pair", N, pair(short, char) x = pop( tp ); if ( x > max ) max = x; )
    2321}
  • doc/papers/general/evaluation/cfa-stack.c

    rb2fe1c9 r32cab5b  
    22#include "cfa-stack.h"
    33
    4 forall(otype T) struct stack_node {
     4forall( otype T ) struct stack_node {
    55        T value;
    66        stack_node(T) * next;
    77};
    88
    9 forall(otype T) void ?{}( stack(T) & s ) { (s.head){ 0 }; }
     9forall( otype T ) void clear( stack(T) & s ) with( s ) {
     10        for ( stack_node(T) * next = head; next; ) {
     11                stack_node(T) * crnt = next;
     12                next = crnt->next;
     13                ^(*crnt){};
     14                free(crnt);
     15        }
     16        head = 0;
     17}
    1018
    11 forall(otype T) void ?{}( stack(T) & s, stack(T) t ) {
     19forall( otype T ) void ?{}( stack(T) & s ) { (s.head){ 0 }; }
     20
     21forall( otype T ) void ?{}( stack(T) & s, stack(T) t ) {
    1222        stack_node(T) ** crnt = &s.head;
    1323        for ( stack_node(T) * next = t.head; next; next = next->next ) {
    14                 stack_node(T)* new_node = (stack_node(T)*)malloc(); /***/
    15                 (*new_node){ next->value };
    16                 *crnt = new_node;
     24                *crnt = alloc();
     25                ((*crnt)->value){ next->value };
    1726                crnt = &(*crnt)->next;
    1827        }
     
    2029}
    2130
    22 forall(otype T) stack(T) ?=?( stack(T) & s, stack(T) t ) {
     31forall( otype T ) stack(T) ?=?( stack(T) & s, stack(T) t ) {
    2332        if ( s.head == t.head ) return s;
    2433        clear( s );
     
    2736}
    2837
    29 forall(otype T) void ^?{}( stack(T) & s) { clear( s ); }
     38forall( otype T ) void ^?{}( stack(T) & s) { clear( s ); }
    3039
    31 forall(otype T) _Bool empty( const stack(T) & s ) { return s.head == 0; }
     40forall( otype T ) _Bool empty( const stack(T) & s ) { return s.head == 0; }
    3241
    33 forall(otype T) void push( stack(T) & s, T value ) {
    34         stack_node(T)* new_node = (stack_node(T)*)malloc(); /***/
    35         (*new_node){ value, s.head };
    36         s.head = new_node;
     42forall( otype T ) void push( stack(T) & s, T value ) with( s ) {
     43        stack_node(T) * n = alloc();
     44        (*n){ value, head };
     45        head = n;
    3746}
    3847
    39 forall(otype T) T pop( stack(T) & s ) {
    40         stack_node(T) * n = s.head;
    41         s.head = n->next;
     48forall( otype T ) T pop( stack(T) & s ) with( s ) {
     49        stack_node(T) * n = head;
     50        head = n->next;
    4251        T v = n->value;
    4352        ^(*n){};
     
    4554        return v;
    4655}
    47 
    48 forall(otype T) void clear( stack(T) & s ) {
    49         for ( stack_node(T) * next = s.head; next; ) {
    50                 stack_node(T) * crnt = next;
    51                 next = crnt->next;
    52                 ^(*crnt){};
    53                 free(crnt);
    54         }
    55         s.head = 0;
    56 }
  • doc/papers/general/evaluation/cfa-stack.h

    rb2fe1c9 r32cab5b  
    11#pragma once
    22
    3 forall(otype T) struct stack_node;
    4 forall(otype T) struct stack {
     3forall( otype T ) struct stack_node;
     4forall( otype T ) struct stack {
    55        stack_node(T) * head;
    66};
    77
    8 forall(otype T) void ?{}( stack(T) & s );
    9 forall(otype T) void ?{}( stack(T) & s, stack(T) t );
    10 forall(otype T) stack(T) ?=?( stack(T) & s, stack(T) t );
    11 forall(otype T) void ^?{}( stack(T) & s);
     8forall( otype T ) void ?{}( stack(T) & s );
     9forall( otype T ) void ?{}( stack(T) & s, stack(T) t );
     10forall( otype T ) stack(T) ?=?( stack(T) & s, stack(T) t );
     11forall( otype T ) void ^?{}( stack(T) & s);
    1212
    13 forall(otype T) _Bool empty( const stack(T) & s );
    14 forall(otype T) void push( stack(T) & s, T value );
    15 forall(otype T) T pop( stack(T) & s );
    16 forall(otype T) void clear( stack(T) & s );
     13forall( otype T ) _Bool empty( const stack(T) & s );
     14forall( otype T ) void push( stack(T) & s, T value );
     15forall( otype T ) T pop( stack(T) & s );
     16forall( otype T ) void clear( stack(T) & s );
  • doc/papers/general/evaluation/cpp-bench.cpp

    rb2fe1c9 r32cab5b  
    1313        REPEAT_TIMED( "pop_int", N, maxi = std::max( maxi, ti.pop() ); )
    1414
    15         pair<bool, char> maxp = { false, '\0' }, valp = { true, 'a' };
    16         stack<pair<bool, char>> sp, tp;
     15        pair<short, char> maxp = { 0, '\0' }, valp = { 42, 'a' };
     16        stack<pair<short, char>> sp, tp;
    1717       
    1818        REPEAT_TIMED( "push_pair", N, sp.push( valp ); )
  • doc/papers/general/evaluation/cpp-stack.hpp

    rb2fe1c9 r32cab5b  
    22#include <utility>
    33
    4 template<typename T> class stack {
     4template<typename T> struct stack {
    55        struct node {
    66                T value;
    7                 node* next;
     7                node * next;
     8                node( const T & v, node * n = nullptr ) : value( v ), next( n ) {}
     9        };
     10        node * head;
    811
    9                 node( const T& v, node* n = nullptr ) : value(v), next(n) {}
    10         };
    11         node* head;
     12        stack() : head( nullptr ) {}
     13        stack( const stack<T> & o ) { copy( o ); }
    1214
    13         void copy(const stack<T>& o) {
    14                 node** crnt = &head;
    15                 for ( node* next = o.head; next; next = next->next ) {
    16                         *crnt = new node{ next->value }; /***/
    17                         crnt = &(*crnt)->next;
    18                 }
    19                 *crnt = nullptr;
    20         }
    21 public:
    2215        void clear() {
    23             for ( node* next = head; next; ) {
    24                         node* crnt = next;
     16                for ( node * next = head; next; ) {
     17                        node * crnt = next;
    2518                        next = crnt->next;
    2619                        delete crnt;
     
    2922        }
    3023
    31         stack() : head(nullptr) {}
    32         stack(const stack<T>& o) { copy(o); }
    33         stack(stack<T>&& o) : head(o.head) { o.head = nullptr; }
     24        void copy( const stack<T> & o ) {
     25                node ** crnt = &head;
     26                for ( node * next = o.head; next; next = next->next ) {
     27                        *crnt = new node{ next->value }; /***/
     28                        crnt = &(*crnt)->next;
     29                }
     30                *crnt = nullptr;
     31        }
     32
    3433        ~stack() { clear(); }
    3534
    36         stack& operator= (const stack<T>& o) {
     35        stack & operator= ( const stack<T> & o ) {
    3736                if ( this == &o ) return *this;
    3837                clear();
    39                 copy(o);
    40                 return *this;
    41         }
    42 
    43         stack& operator= (stack<T>&& o) {
    44                 if ( this == &o ) return *this;
    45                 head = o.head;
    46                 o.head = nullptr;
     38                copy( o );
    4739                return *this;
    4840        }
     
    5042        bool empty() const { return head == nullptr; }
    5143
    52         void push(const T& value) { head = new node{ value, head };  /***/ }
     44        void push( const T & value ) { head = new node{ value, head };  /***/ }
    5345
    5446        T pop() {
    55                 node* n = head;
     47                node * n = head;
    5648                head = n->next;
    57                 T x = std::move(n->value);
     49                T v = std::move( n->value );
    5850                delete n;
    59                 return x;
     51                return v;
    6052        }
    6153};
  • doc/papers/general/evaluation/cpp-vbench.cpp

    rb2fe1c9 r32cab5b  
    1313        REPEAT_TIMED( "pop_int", N, maxi = std::max( maxi, ti.pop()->as<integer>() ); /***/ )
    1414
    15         ptr<pair> maxp = make<pair>( make<boolean>(false), make<character>('\0') );
    16         pair valp{ make<boolean>(true), make<character>('a') };
     15        ptr<pair> maxp = make<pair>( make<short_integer>(0), make<character>('\0') );
     16        pair valp{ make<short_integer>(42), make<character>('a') };
    1717        stack sp, tp;
    1818       
  • doc/papers/general/evaluation/cpp-vstack.cpp

    rb2fe1c9 r32cab5b  
    22#include <utility>
    33
    4 stack::node::node( const object& v, node* n ) : value( v.new_copy() ), next( n ) {}
    5 
    6 void stack::copy(const stack& o) {
    7         node** crnt = &head;
    8         for ( node* next = o.head; next; next = next->next ) {
    9                 *crnt = new node{ *next->value };
    10                 crnt = &(*crnt)->next;
    11         }
    12         *crnt = nullptr;
    13 }
    14 
    15 stack::stack() : head(nullptr) {}
    16 stack::stack(const stack& o) { copy(o); }
    17 stack::stack(stack&& o) : head(o.head) { o.head = nullptr; }
    18 stack::~stack() { clear(); }
    19 
    20 stack& stack::operator= (const stack& o) {
    21         if ( this == &o ) return *this;
    22         clear();
    23         copy(o);
    24         return *this;
    25 }
    26 
    27 stack& stack::operator= (stack&& o) {
    28         if ( this == &o ) return *this;
    29         head = o.head;
    30         o.head = nullptr;
    31         return *this;
    32 }
     4stack::node::node( const object & v, node * n ) : value( v.new_copy() ), next( n ) {}
    335
    346void stack::clear() {
    35     for ( node* next = head; next; ) {
    36                 node* crnt = next;
     7        for ( node * next = head; next; ) {
     8                node * crnt = next;
    379                next = crnt->next;
    3810                delete crnt;
     
    4113}
    4214
     15void stack::copy( const stack & o ) {
     16        node ** crnt = &head;
     17        for ( node * next = o.head; next; next = next->next ) {
     18                *crnt = new node{ *next->value }; /***/
     19                crnt = &(*crnt)->next;
     20        }
     21        *crnt = nullptr;
     22}
     23
     24stack::stack() : head( nullptr ) {}
     25stack::stack( const stack & o ) { copy( o ); }
     26stack::~stack() { clear(); }
     27
     28stack & stack::operator=( const stack & o ) {
     29        if ( this == &o ) return *this;
     30        clear();
     31        copy( o );
     32        return *this;
     33}
    4334
    4435bool stack::empty() const { return head == nullptr; }
    4536
    46 void stack::push(const object& value) { head = new node{ value, head }; /***/ }
     37void stack::push( const object & value ) { head = new node{ value, head }; /***/ }
    4738
    4839ptr<object> stack::pop() {
    49         node* n = head;
     40        node * n = head;
    5041        head = n->next;
    51         ptr<object> x = std::move(n->value);
     42        ptr<object> v = std::move( n->value );
    5243        delete n;
    53         return x;
     44        return v;
    5445}
  • doc/papers/general/evaluation/cpp-vstack.hpp

    rb2fe1c9 r32cab5b  
    22#include "object.hpp"
    33
    4 class stack {
     4struct stack {
    55        struct node {
    66                ptr<object> value;
    7                 node* next;
    8 
    9                 node( const object& v, node* n = nullptr );
     7                node * next;
     8                node( const object & v, node * n = nullptr );
    109        };
    11         node* head;
    12 
    13         void copy(const stack& o);
    14 public:
    15         stack();
    16         stack(const stack& o);
    17         stack(stack&& o);
    18         ~stack();
    19         stack& operator= (const stack& o);
    20         stack& operator= (stack&& o);
     10        node * head;
    2111
    2212        void clear();
     13        void copy( const stack & o );
     14
     15        stack();
     16        stack( const stack & o );
     17        ~stack();
     18        stack & operator=( const stack& o );
    2319        bool empty() const;
    24         void push(const object& value);
     20        void push( const object & value );
    2521        ptr<object> pop();
    2622};
  • doc/papers/general/evaluation/object.hpp

    rb2fe1c9 r32cab5b  
    6767};
    6868
    69 class boolean : public ordered, public printable {
    70         bool x;
    71 public:
    72         boolean() = default;
    73         boolean(bool x) : x(x) {}
    74         boolean(const boolean&) = default;
    75         boolean(boolean&&) = default;
    76         ptr<object> new_inst() const override { return make<boolean>(); }
    77         ptr<object> new_copy() const override { return make<boolean>(*this); }
    78         boolean& operator= (const boolean& that) {
    79                 x = that.x;
    80                 return *this;   
    81         }
    82         object& operator= (const object& that) override { return *this = that.as<boolean>(); } /***/
    83         boolean& operator= (boolean&&) = default;
    84         ~boolean() override = default;
    85 
    86         int cmp(const boolean& that) const { return x == that.x ? 0 : x == false ? -1 : 1; }
    87         int cmp(const ordered& that) const override { return cmp( that.as<boolean>() ); } /***/
    88 
    89         void print(std::ostream& out) const override { out << (x ? "true" : "false"); }
    90 };
    91 
    9269class character : public ordered, public printable {
    9370        char x;
     
    11693};
    11794
     95class short_integer : public ordered, public printable {
     96        short x;
     97public:
     98        short_integer() = default;
     99        short_integer(short x) : x(x) {}
     100        short_integer(const short_integer&) = default;
     101        short_integer(short_integer&&) = default;
     102        ptr<object> new_inst() const override { return make<short_integer>(); }
     103        ptr<object> new_copy() const override { return make<short_integer>(*this); }
     104        short_integer& operator= (const short_integer& that) {
     105                x = that.x;
     106                return *this;   
     107        }
     108        object& operator= (const object& that) override { return *this = that.as<short_integer>(); } /***/
     109        short_integer& operator= (short_integer&&) = default;
     110        ~short_integer() override = default;
     111
     112        int cmp(const short_integer& that) const { return x == that.x ? 0 : x < that.x ? -1 : 1; }
     113        int cmp(const ordered& that) const override { return cmp( that.as<short_integer>() ); } /***/
     114
     115        void print(std::ostream& out) const override { out << x; }
     116};
     117
    118118class integer : public ordered, public printable {
    119119        int x;
     
    137137
    138138        void print(std::ostream& out) const override { out << x; }
    139 };
    140 
    141 class c_string : public printable {
    142         static constexpr const char* empty = "";
    143         const char* s;
    144 public:
    145         c_string() : s(empty) {}
    146         c_string(const char* s) : s(s) {}
    147         c_string(const c_string&) = default;
    148         c_string(c_string&&) = default;
    149         ptr<object> new_inst() const override { return make<c_string>(); }
    150         ptr<object> new_copy() const override { return make<c_string>(s); }
    151         c_string& operator= (const c_string& that) {
    152                 s = that.s;
    153                 return *this;
    154         }
    155         object& operator= (const object& that) override { return *this = that.as<c_string>(); } /***/
    156         c_string& operator= (c_string&&) = default;
    157         ~c_string() override = default;
    158 
    159         void print(std::ostream& out) const override { out << s; }
    160139};
    161140
     
    188167                return y->as<ordered>().cmp( that.y->as<ordered>() ); /***/
    189168        }
    190         int cmp(const ordered& that) const override { return cmp( that.as<pair>() ); }
     169        int cmp(const ordered& that) const override { return cmp( that.as<pair>() ); } /***/
    191170
    192171        void print(std::ostream& out) const override {
  • doc/papers/general/evaluation/timing.dat

    rb2fe1c9 r32cab5b  
    11"400 million repetitions"       "C"     "\\CFA{}"       "\\CC{}"        "\\CC{obj}"
    2 "push\nint"     2976    2225    1522    3266
    3 "copy\nnt"      2932    7072    1526    3110
    4 "clear\nint"    1380    731     750     1488
    5 "pop\nint"      1444    1196    756     5156
    6 "push\npair"    3695    2257    953     6840
    7 "copy\npair"    6034    6650    994     7224
    8 "clear\npair"   2832    848     742     3297
    9 "pop\npair"     3009    5348    797     25235
    10 
     2"push\nint"     3002    2459    1542    3269
     3"copy\nint"     2985    2057    1539    3083
     4"clear\nint"    1374    827     756     1469
     5"pop\nint"      1416    1221    760     5098
     6"push\npair"    4214    2752    950     6873
     7"copy\npair"    6127    2105    987     7293
     8"clear\npair"   2881    885     751     3460
     9"pop\npair"     3046    5434    822     24962
  • doc/papers/general/evaluation/timing.gp

    rb2fe1c9 r32cab5b  
    2222SCALE=1000
    2323set ylabel "seconds"
     24set yrange [0:10]
     25
     26set label "25.0" at 7.125,10.5
    2427
    2528# set datafile separator ","
  • doc/refrat/keywords.tex

    rb2fe1c9 r32cab5b  
    1111%% Created On       : Sun Aug  6 08:17:27 2017
    1212%% Last Modified By : Peter A. Buhr
    13 %% Last Modified On : Wed Aug 30 22:10:10 2017
    14 %% Update Count     : 5
     13%% Last Modified On : Fri Apr  6 15:16:11 2018
     14%% Update Count     : 7
    1515%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
    1616\begin{tabular}{@{}llllll@{}}
    1717\begin{tabular}{@{}l@{}}
    18 ©_At©                   \\
    1918©catch©                 \\
    2019©catchResume©   \\
    2120©choose©                \\
    2221©coroutine©             \\
     22©disable©               \\
    2323\end{tabular}
    2424&
    2525\begin{tabular}{@{}l@{}}
    26 ©disable©               \\
    2726©dtype©                 \\
    2827©enable©                \\
     28©exception©             \\
    2929©fallthrough©   \\
    3030©fallthru©              \\
     
    3535©forall©                \\
    3636©ftype©                 \\
    37 ©lvalue©                \\
    3837©monitor©               \\
     38©mutex©                 \\
    3939\end{tabular}
    4040&
    4141\begin{tabular}{@{}l@{}}
    42 ©mutex©                 \\
    4342©one_t©                 \\
    4443©otype©                 \\
    4544©throw©                 \\
    4645©throwResume©   \\
     46©trait©                 \\
    4747\end{tabular}
    4848&
    4949\begin{tabular}{@{}l@{}}
    50 ©trait©                 \\
    5150©try©                   \\
    5251©ttype©                 \\
    5352©virtual©               \\
    5453©waitfor©               \\
     54©when©                  \\
    5555\end{tabular}
    5656&
    5757\begin{tabular}{@{}l@{}}
    58 ©when©                  \\
    5958©with©                  \\
    6059©zero_t©                \\
     60                                \\
    6161                                \\
    6262                                \\
  • doc/user/user.tex

    rb2fe1c9 r32cab5b  
    1111%% Created On       : Wed Apr  6 14:53:29 2016
    1212%% Last Modified By : Peter A. Buhr
    13 %% Last Modified On : Tue Feb 13 08:31:21 2018
    14 %% Update Count     : 3161
     13%% Last Modified On : Sat Apr 14 19:04:30 2018
     14%% Update Count     : 3318
    1515%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
    1616
     
    283283
    284284double key = 5.0, vals[10] = { /* 10 sorted floating values */ };
    285 double * val = (double *)bsearch( &key, vals, 10, sizeof(vals[0]), comp );      $\C{// search sorted array}$
     285double * val = (double *)bsearch( &key, vals, 10, sizeof(vals[0]), comp );      §\C{// search sorted array}§
    286286\end{lstlisting}
    287287which can be augmented simply with a polymorphic, type-safe, \CFA-overloaded wrappers:
     
    292292
    293293forall( otype T | { int ?<?( T, T ); } ) unsigned int bsearch( T key, const T * arr, size_t size ) {
    294         T * result = bsearch( key, arr, size ); $\C{// call first version}$
    295         return result ? result - arr : size; }  $\C{// pointer subtraction includes sizeof(T)}$
    296 
    297 double * val = bsearch( 5.0, vals, 10 );        $\C{// selection based on return type}$
     294        T * result = bsearch( key, arr, size ); §\C{// call first version}§
     295        return result ? result - arr : size; }  §\C{// pointer subtraction includes sizeof(T)}§
     296
     297double * val = bsearch( 5.0, vals, 10 );        §\C{// selection based on return type}§
    298298int posn = bsearch( 5.0, vals, 10 );
    299299\end{lstlisting}
     
    353353The 1999 C standard plus GNU extensions.
    354354\item
    355 \Indexc[deletekeywords=inline]{-fgnu89-inline}\index{compilation option!-fgnu89-inline@{\lstinline[deletekeywords=inline]$-fgnu89-inline$}}
     355\Indexc[deletekeywords=inline]{-fgnu89-inline}\index{compilation option!-fgnu89-inline@{\lstinline[deletekeywords=inline]@-fgnu89-inline@}}
    356356Use the traditional GNU semantics for inline routines in C99 mode, which allows inline routines in header files.
    357357\end{description}
     
    506506
    507507C, \CC, and Java (and many other programming languages) have no exponentiation operator\index{exponentiation!operator}\index{operator!exponentiation}, \ie $x^y$, and instead use a routine, like \Indexc{pow}, to perform the exponentiation operation.
    508 \CFA extends the basic operators with the exponentiation operator ©?\?©\index{?\\?@\lstinline$?\?$} and ©?\=?©\index{?\\=?@\lstinline$?\=?$}, as in, ©x \ y© and ©x \= y©, which means $x^y$ and $x \leftarrow x^y$.
     508\CFA extends the basic operators with the exponentiation operator ©?\?©\index{?\\?@\lstinline@?\?@} and ©?\=?©\index{?\\=?@\lstinline@?\=?@}, as in, ©x \ y© and ©x \= y©, which means $x^y$ and $x \leftarrow x^y$.
    509509The priority of the exponentiation operator is between the cast and multiplicative operators, so that ©w * (int)x \ (int)y * z© is parenthesized as ©((w * (((int)x) \ ((int)y))) * z)©.
    510510
     
    524524
    525525
    526 \section{\texorpdfstring{Labelled \LstKeywordStyle{continue} / \LstKeywordStyle{break}}{Labelled continue / break}}
     526\section{\texorpdfstring{Labelled \protect\lstinline@continue@ / \protect\lstinline@break@}{Labelled continue / break}}
    527527
    528528While C provides ©continue© and ©break© statements for altering control flow, both are restricted to one level of nesting for a particular control structure.
    529529Unfortunately, this restriction forces programmers to use \Indexc{goto} to achieve the equivalent control-flow for more than one level of nesting.
    530 To prevent having to switch to the ©goto©, \CFA extends the \Indexc{continue}\index{continue@\lstinline $continue$!labelled}\index{labelled!continue@©continue©} and \Indexc{break}\index{break@\lstinline $break$!labelled}\index{labelled!break@©break©} with a target label to support static multi-level exit\index{multi-level exit}\index{static multi-level exit}~\cite{Buhr85}, as in Java.
     530To prevent having to switch to the ©goto©, \CFA extends the \Indexc{continue}\index{continue@\lstinline@continue@!labelled}\index{labelled!continue@©continue©} and \Indexc{break}\index{break@\lstinline@break@!labelled}\index{labelled!break@©break©} with a target label to support static multi-level exit\index{multi-level exit}\index{static multi-level exit}~\cite{Buhr85}, as in Java.
    531531For both ©continue© and ©break©, the target label must be directly associated with a ©for©, ©while© or ©do© statement;
    532532for ©break©, the target label can also be associated with a ©switch©, ©if© or compound (©{}©) statement.
     
    613613\end{figure}
    614614
    615 Both labelled ©continue© and ©break© are a ©goto©\index{goto@\lstinline $goto$!restricted} restricted in the following ways:
     615Both labelled ©continue© and ©break© are a ©goto©\index{goto@\lstinline@goto@!restricted} restricted in the following ways:
    616616\begin{itemize}
    617617\item
     
    629629
    630630
    631 \section{\texorpdfstring{\LstKeywordStyle{switch} Statement}{switch Statement}}
     631\section{\texorpdfstring{\protect\lstinline@switch@ Statement}{switch Statement}}
    632632
    633633C allows a number of questionable forms for the ©switch© statement:
     
    834834
    835835
    836 \section{\texorpdfstring{\LstKeywordStyle{case} Clause}{case Clause}}
     836\section{\texorpdfstring{\protect\lstinline@case@ Clause}{case Clause}}
    837837
    838838C restricts the ©case© clause of a ©switch© statement to a single value.
     
    871871\end{tabular}
    872872\end{cquote}
    873 In addition, two forms of subranges are allowed to specify case values: a new \CFA form and an existing GNU C form.\footnote{
    874 The GNU C form \emph{requires} spaces around the ellipse.}
    875 \begin{cquote}
    876 \begin{tabular}{@{}l@{\hspace{3em}}l@{\hspace{2em}}l@{}}
    877 \multicolumn{1}{c@{\hspace{3em}}}{\textbf{\CFA}}        & \multicolumn{1}{c@{\hspace{2em}}}{\textbf{GNU C}}     \\
     873In addition, subranges are allowed to specify case values.\footnote{
     874gcc has the same mechanism but awkward syntax, \lstinline@2 ...42@, because a space is required after a number, otherwise the period is a decimal point.}
    878875\begin{cfa}
    879876switch ( i ) {
    880   case ®1~5:®
     877  case ®1~5:®                                   §\C{// 1, 2, 3, 4, 5}§
    881878        ...
    882   case ®10~15:®
     879  case ®10~15:®                                 §\C{// 10, 11, 12, 13, 14, 15}§
    883880        ...
    884881}
    885882\end{cfa}
    886 &
    887 \begin{cfa}
    888 switch ( i )
    889   case ®1 ... 5®:
    890         ...
    891   case ®10 ... 15®:
    892         ...
    893 }
    894 \end{cfa}
    895 &
    896 \begin{cfa}
    897 
    898 // 1, 2, 3, 4, 5
    899 
    900 // 10, 11, 12, 13, 14, 15
    901 
    902 
    903 \end{cfa}
    904 \end{tabular}
    905 \end{cquote}
    906883Lists of subranges are also allowed.
    907884\begin{cfa}
     
    910887
    911888
    912 \section{\texorpdfstring{\LstKeywordStyle{with} Clause / Statement}{with Clause / Statement}}
    913 \label{s:WithClauseStatement}
     889\section{\texorpdfstring{\protect\lstinline@with@ Statement}{with Statement}}
     890\label{s:WithStatement}
     891
     892Grouping heterogeneous data into \newterm{aggregate}s (structure/union) is a common programming practice, and an aggregate can be further organized into more complex structures, such as arrays and containers:
     893\begin{cfa}
     894struct S {                                                                      §\C{// aggregate}§
     895        char c;                                                                 §\C{// fields}§
     896        int i;
     897        double d;
     898};
     899S s, as[10];
     900\end{cfa}
     901However, functions manipulating aggregates must repeat the aggregate name to access its containing fields:
     902\begin{cfa}
     903void f( S s ) {
     904        `s.`c; `s.`i; `s.`d;                                    §\C{// access containing fields}§
     905}
     906\end{cfa}
     907which extends to multiple levels of qualification for nested aggregates.
     908A similar situation occurs in object-oriented programming, \eg \CC:
     909\begin{C++}
     910struct S {
     911        char c;                                                                 §\C{// fields}§
     912        int i;
     913        double d;
     914        void f() {                                                              §\C{// implicit ``this'' aggregate}§
     915                `this->`c; `this->`i; `this->`d;        §\C{// access containing fields}§
     916        }
     917}
     918\end{C++}
     919Object-oriented nesting of member functions in a \lstinline[language=C++]@class/struct@ allows eliding \lstinline[language=C++]$this->$ because of lexical scoping.
     920However, for other aggregate parameters, qualification is necessary:
     921\begin{cfa}
     922struct T { double m, n; };
     923int S::f( T & t ) {                                                     §\C{// multiple aggregate parameters}§
     924        c; i; d;                                                                §\C{\color{red}// this--{\textgreater}.c, this--{\textgreater}.i, this--{\textgreater}.d}§
     925        `t.`m; `t.`n;                                                   §\C{// must qualify}§
     926}
     927\end{cfa}
     928
     929To simplify the programmer experience, \CFA provides a @with@ statement (see Pascal~\cite[\S~4.F]{Pascal}) to elide aggregate qualification to fields by opening a scope containing the field identifiers.
     930Hence, the qualified fields become variables with the side-effect that it is easier to optimizing field references in a block.
     931\begin{cfa}
     932void f( S & this ) `with ( this )` {            §\C{// with statement}§
     933        c; i; d;                                                                §\C{\color{red}// this.c, this.i, this.d}§
     934}
     935\end{cfa}
     936with the generality of opening multiple aggregate-parameters:
     937\begin{cfa}
     938void f( S & s, T & t ) `with ( s, t )` {                §\C{// multiple aggregate parameters}§
     939        c; i; d;                                                                §\C{\color{red}// s.c, s.i, s.d}§
     940        m; n;                                                                   §\C{\color{red}// t.m, t.n}§
     941}
     942\end{cfa}
     943
     944In detail, the @with@ statement has the form:
     945\begin{cfa}
     946§\emph{with-statement}§:
     947        'with' '(' §\emph{expression-list}§ ')' §\emph{compound-statement}§
     948\end{cfa}
     949and may appear as the body of a function or nested within a function body.
     950Each expression in the expression-list provides a type and object.
     951The type must be an aggregate type.
     952(Enumerations are already opened.)
     953The object is the implicit qualifier for the open structure-fields.
     954
     955All expressions in the expression list are open in parallel within the compound statement.
     956This semantic is different from Pascal, which nests the openings from left to right.
     957The difference between parallel and nesting occurs for fields with the same name and type:
     958\begin{cfa}
     959struct S { int `i`; int j; double m; } s, w;
     960struct T { int `i`; int k; int m; } t, w;
     961with ( s, t ) {
     962        j + k;                                                                  §\C{// unambiguous, s.j + t.k}§
     963        m = 5.0;                                                                §\C{// unambiguous, t.m = 5.0}§
     964        m = 1;                                                                  §\C{// unambiguous, s.m = 1}§
     965        int a = m;                                                              §\C{// unambiguous, a = s.i }§
     966        double b = m;                                                   §\C{// unambiguous, b = t.m}§
     967        int c = s.i + t.i;                                              §\C{// unambiguous, qualification}§
     968        (double)m;                                                              §\C{// unambiguous, cast}§
     969}
     970\end{cfa}
     971For parallel semantics, both @s.i@ and @t.i@ are visible, so @i@ is ambiguous without qualification;
     972for nested semantics, @t.i@ hides @s.i@, so @i@ implies @t.i@.
     973\CFA's ability to overload variables means fields with the same name but different types are automatically disambiguated, eliminating most qualification when opening multiple aggregates.
     974Qualification or a cast is used to disambiguate.
     975
     976There is an interesting problem between parameters and the function-body @with@, \eg:
     977\begin{cfa}
     978void ?{}( S & s, int i ) with ( s ) {           §\C{// constructor}§
     979        `s.i = i;`  j = 3;  m = 5.5;                    §\C{// initialize fields}§
     980}
     981\end{cfa}
     982Here, the assignment @s.i = i@ means @s.i = s.i@, which is meaningless, and there is no mechanism to qualify the parameter @i@, making the assignment impossible using the function-body @with@.
     983To solve this problem, parameters are treated like an initialized aggregate:
     984\begin{cfa}
     985struct Params {
     986        S & s;
     987        int i;
     988} params;
     989\end{cfa}
     990and implicitly opened \emph{after} a function-body open, to give them higher priority:
     991\begin{cfa}
     992void ?{}( S & s, int `i` ) with ( s ) `with( §\emph{\color{red}params}§ )` {
     993        s.i = `i`; j = 3; m = 5.5;
     994}
     995\end{cfa}
     996Finally, a cast may be used to disambiguate among overload variables in a @with@ expression:
     997\begin{cfa}
     998with ( w ) { ... }                                                      §\C{// ambiguous, same name and no context}§
     999with ( (S)w ) { ... }                                           §\C{// unambiguous, cast}§
     1000\end{cfa}
     1001and @with@ expressions may be complex expressions with type reference (see Section~\ref{s:References}) to aggregate:
     1002% \begin{cfa}
     1003% struct S { int i, j; } sv;
     1004% with ( sv ) {                                                         §\C{// implicit reference}§
     1005%       S & sr = sv;
     1006%       with ( sr ) {                                                   §\C{// explicit reference}§
     1007%               S * sp = &sv;
     1008%               with ( *sp ) {                                          §\C{// computed reference}§
     1009%                       i = 3; j = 4;                                   §\C{\color{red}// sp--{\textgreater}i, sp--{\textgreater}j}§
     1010%               }
     1011%               i = 2; j = 3;                                           §\C{\color{red}// sr.i, sr.j}§
     1012%       }
     1013%       i = 1; j = 2;                                                   §\C{\color{red}// sv.i, sv.j}§
     1014% }
     1015% \end{cfa}
    9141016
    9151017In \Index{object-oriented} programming, there is an implicit first parameter, often names \textbf{©self©} or \textbf{©this©}, which is elided.
     
    9351037\CFA provides a ©with© clause/statement (see Pascal~\cite[\S~4.F]{Pascal}) to elided the "©this.©" by opening a scope containing field identifiers, changing the qualified fields into variables and giving an opportunity for optimizing qualified references.
    9361038\begin{cfa}
    937 int mem( S & this ) ®with this® { §\C{// with clause}§
     1039int mem( S & this ) ®with( this )® { §\C{// with clause}§
    9381040        i = 1;                                          §\C{\color{red}// this.i}§
    9391041        j = 2;                                          §\C{\color{red}// this.j}§
     
    9431045\begin{cfa}
    9441046struct T { double m, n; };
    945 int mem2( S & this1, T & this2 ) ®with this1, this2® {
     1047int mem2( S & this1, T & this2 ) ®with( this1, this2 )® {
    9461048        i = 1; j = 2;
    9471049        m = 1.0; n = 2.0;
     
    9541056        struct S1 { ... } s1;
    9551057        struct S2 { ... } s2;
    956         ®with s1® {                                     §\C{// with statement}§
     1058        ®with( s1 )® {                          §\C{// with statement}§
    9571059                // access fields of s1 without qualification
    9581060                ®with s2® {                             §\C{// nesting}§
     
    9711073struct S { int i; int j; double m; } a, c;
    9721074struct T { int i; int k; int m } b, c;
    973 ®with a, b® {
    974         j + k;                                          §\C{// unambiguous, unique names define unique types}§
    975         i;                                                      §\C{// ambiguous, same name and type}§
    976         a.i + b.i;                                      §\C{// unambiguous, qualification defines unique names}§
    977         m;                                                      §\C{// ambiguous, same name and no context to define unique type}§
    978         m = 5.0;                                        §\C{// unambiguous, same name and context defines unique type}§
    979         m = 1;                                          §\C{// unambiguous, same name and context defines unique type}§
    980 }
    981 ®with c® { ... }                                §\C{// ambiguous, same name and no context}§
    982 ®with (S)c® { ... }                             §\C{// unambiguous, same name and cast defines unique type}§
    983 \end{cfa}
    984 
     1075with( a, b )
     1076{
     1077}
     1078\end{cfa}
     1079
     1080\begin{comment}
    9851081The components in the "with" clause
    9861082
     
    10071103the "with" to be implemented because I hate having to type all those object
    10081104names for fields. It's a great way to drive people away from the language.
     1105\end{comment}
    10091106
    10101107
     
    15951692
    15961693\item
    1597 lvalue to reference conversion: \lstinline[deletekeywords=lvalue]$lvalue-type cv1 T$ converts to ©cv2 T &©, which allows implicitly converting variables to references.
     1694lvalue to reference conversion: \lstinline[deletekeywords=lvalue]@lvalue-type cv1 T@ converts to ©cv2 T &©, which allows implicitly converting variables to references.
    15981695\begin{cfa}
    15991696int x, &r = ®x®, f( int & p ); // lvalue variable (int) convert to reference (int &)
     
    63616458
    63626459
     6460\section{Time}
     6461\label{s:TimeLib}
     6462
     6463
     6464%\subsection{\texorpdfstring{\protect\lstinline@Duration@}{Duration}}
     6465\subsection{\texorpdfstring{\LstKeywordStyle{\textmd{Duration}}}{Duration}}
     6466\label{s:Duration}
     6467
     6468\leavevmode
     6469\begin{cfa}[aboveskip=0pt,belowskip=0pt]
     6470struct Duration {
     6471        int64_t tv;                                                     §\C{// nanoseconds}§
     6472};
     6473
     6474void ?{}( Duration & dur );
     6475void ?{}( Duration & dur, zero_t );
     6476
     6477Duration ?=?( Duration & dur, zero_t );
     6478
     6479Duration +?( Duration rhs );
     6480Duration ?+?( Duration & lhs, Duration rhs );
     6481Duration ?+=?( Duration & lhs, Duration rhs );
     6482
     6483Duration -?( Duration rhs );
     6484Duration ?-?( Duration & lhs, Duration rhs );
     6485Duration ?-=?( Duration & lhs, Duration rhs );
     6486
     6487Duration ?*?( Duration lhs, int64_t rhs );
     6488Duration ?*?( int64_t lhs, Duration rhs );
     6489Duration ?*=?( Duration & lhs, int64_t rhs );
     6490
     6491int64_t ?/?( Duration lhs, Duration rhs );
     6492Duration ?/?( Duration lhs, int64_t rhs );
     6493Duration ?/=?( Duration & lhs, int64_t rhs );
     6494double div( Duration lhs, Duration rhs );
     6495
     6496Duration ?%?( Duration lhs, Duration rhs );
     6497Duration ?%=?( Duration & lhs, Duration rhs );
     6498
     6499_Bool ?==?( Duration lhs, Duration rhs );
     6500_Bool ?!=?( Duration lhs, Duration rhs );
     6501_Bool ?<? ( Duration lhs, Duration rhs );
     6502_Bool ?<=?( Duration lhs, Duration rhs );
     6503_Bool ?>? ( Duration lhs, Duration rhs );
     6504_Bool ?>=?( Duration lhs, Duration rhs );
     6505
     6506_Bool ?==?( Duration lhs, zero_t );
     6507_Bool ?!=?( Duration lhs, zero_t );
     6508_Bool ?<? ( Duration lhs, zero_t );
     6509_Bool ?<=?( Duration lhs, zero_t );
     6510_Bool ?>? ( Duration lhs, zero_t );
     6511_Bool ?>=?( Duration lhs, zero_t );
     6512
     6513Duration abs( Duration rhs );
     6514
     6515forall( dtype ostype | ostream( ostype ) ) ostype & ?|?( ostype & os, Duration dur );
     6516
     6517Duration ?`ns( int64_t nsec );
     6518Duration ?`us( int64_t usec );
     6519Duration ?`ms( int64_t msec );
     6520Duration ?`s( int64_t sec );
     6521Duration ?`s( double sec );
     6522Duration ?`m( int64_t min );
     6523Duration ?`m( double min );
     6524Duration ?`h( int64_t hours );
     6525Duration ?`h( double hours );
     6526Duration ?`d( int64_t days );
     6527Duration ?`d( double days );
     6528Duration ?`w( int64_t weeks );
     6529Duration ?`w( double weeks );
     6530
     6531int64_t ?`ns( Duration dur );
     6532int64_t ?`us( Duration dur );
     6533int64_t ?`ms( Duration dur );
     6534int64_t ?`s( Duration dur );
     6535int64_t ?`m( Duration dur );
     6536int64_t ?`h( Duration dur );
     6537int64_t ?`d( Duration dur );
     6538int64_t ?`w( Duration dur );
     6539\end{cfa}
     6540
     6541
     6542%\subsection{\texorpdfstring{\protect\lstinline@\timeval@}{timeval}}
     6543\subsection{\texorpdfstring{\LstKeywordStyle{\textmd{timeval}}}{timeval}}
     6544\label{s:timeval}
     6545
     6546\leavevmode
     6547\begin{cfa}[aboveskip=0pt,belowskip=0pt]
     6548void ?{}( timeval & t );
     6549void ?{}( timeval & t, time_t sec, suseconds_t usec );
     6550void ?{}( timeval & t, time_t sec );
     6551void ?{}( timeval & t, zero_t );
     6552void ?{}( timeval & t, Time time );
     6553
     6554timeval ?=?( timeval & t, zero_t );
     6555timeval ?+?( timeval & lhs, timeval rhs );
     6556timeval ?-?( timeval & lhs, timeval rhs );
     6557_Bool ?==?( timeval lhs, timeval rhs );
     6558_Bool ?!=?( timeval lhs, timeval rhs );
     6559\end{cfa}
     6560
     6561
     6562\subsection{\texorpdfstring{\protect\lstinline@timespec@}{timespec}}
     6563\label{s:timespec}
     6564
     6565\leavevmode
     6566\begin{cfa}[aboveskip=0pt,belowskip=0pt]
     6567void ?{}( timespec & t );
     6568void ?{}( timespec & t, time_t sec, __syscall_slong_t nsec );
     6569void ?{}( timespec & t, time_t sec );
     6570void ?{}( timespec & t, zero_t );
     6571void ?{}( timespec & t, Time time );
     6572
     6573timespec ?=?( timespec & t, zero_t );
     6574timespec ?+?( timespec & lhs, timespec rhs );
     6575timespec ?-?( timespec & lhs, timespec rhs );
     6576_Bool ?==?( timespec lhs, timespec rhs );
     6577_Bool ?!=?( timespec lhs, timespec rhs );
     6578\end{cfa}
     6579
     6580
     6581\subsection{\texorpdfstring{\protect\lstinline@itimerval@}{itimerval}}
     6582\label{s:itimerval}
     6583
     6584\leavevmode
     6585\begin{cfa}[aboveskip=0pt,belowskip=0pt]
     6586void ?{}( itimerval & itv, Duration alarm );
     6587void ?{}( itimerval & itv, Duration alarm, Duration interval );
     6588\end{cfa}
     6589
     6590
     6591\subsection{\texorpdfstring{\protect\lstinline@Time@}{Time}}
     6592\label{s:Time}
     6593
     6594\leavevmode
     6595\begin{cfa}[aboveskip=0pt,belowskip=0pt]
     6596struct Time {
     6597        uint64_t tv;                                            §\C{// nanoseconds since UNIX epoch}§
     6598};
     6599
     6600void ?{}( Time & time );
     6601void ?{}( Time & time, zero_t );
     6602void ?{}( Time & time, int year, int month = 0, int day = 0, int hour = 0, int min = 0, int sec = 0, int nsec = 0 );
     6603Time ?=?( Time & time, zero_t );
     6604
     6605void ?{}( Time & time, timeval t );
     6606Time ?=?( Time & time, timeval t );
     6607
     6608void ?{}( Time & time, timespec t );
     6609Time ?=?( Time & time, timespec t );
     6610
     6611Time ?+?( Time & lhs, Duration rhs ) { return (Time)@{ lhs.tv + rhs.tv }; }
     6612Time ?+?( Duration lhs, Time rhs ) { return rhs + lhs; }
     6613Time ?+=?( Time & lhs, Duration rhs ) { lhs = lhs + rhs; return lhs; }
     6614
     6615Duration ?-?( Time lhs, Time rhs ) { return (Duration)@{ lhs.tv - rhs.tv }; }
     6616Time ?-?( Time lhs, Duration rhs ) { return (Time)@{ lhs.tv - rhs.tv }; }
     6617Time ?-=?( Time & lhs, Duration rhs ) { lhs = lhs - rhs; return lhs; }
     6618_Bool ?==?( Time lhs, Time rhs ) { return lhs.tv == rhs.tv; }
     6619_Bool ?!=?( Time lhs, Time rhs ) { return lhs.tv != rhs.tv; }
     6620_Bool ?<?( Time lhs, Time rhs ) { return lhs.tv < rhs.tv; }
     6621_Bool ?<=?( Time lhs, Time rhs ) { return lhs.tv <= rhs.tv; }
     6622_Bool ?>?( Time lhs, Time rhs ) { return lhs.tv > rhs.tv; }
     6623_Bool ?>=?( Time lhs, Time rhs ) { return lhs.tv >= rhs.tv; }
     6624
     6625forall( dtype ostype | ostream( ostype ) ) ostype & ?|?( ostype & os, Time time );
     6626
     6627char * yy_mm_dd( Time time, char * buf );
     6628char * ?`ymd( Time time, char * buf ) { // short form
     6629        return yy_mm_dd( time, buf );
     6630} // ymd
     6631
     6632char * mm_dd_yy( Time time, char * buf );
     6633char * ?`mdy( Time time, char * buf ) { // short form
     6634        return mm_dd_yy( time, buf );
     6635} // mdy
     6636
     6637char * dd_mm_yy( Time time, char * buf );
     6638char * ?`dmy( Time time, char * buf ) { // short form
     6639        return dd_mm_yy( time, buf );;
     6640} // dmy
     6641
     6642size_t strftime( char * buf, size_t size, const char * fmt, Time time );
     6643\end{cfa}
     6644
     6645
     6646\section{Clock}
     6647
     6648\subsection{C time}
     6649\label{s:Ctime}
     6650
     6651\leavevmode
     6652\begin{cfa}[aboveskip=0pt,belowskip=0pt]
     6653char * ctime( time_t tp );
     6654char * ctime_r( time_t tp, char * buf );
     6655tm * gmtime( time_t tp );
     6656tm * gmtime_r( time_t tp, tm * result );
     6657tm * localtime( time_t tp );
     6658tm * localtime_r( time_t tp, tm * result );
     6659\end{cfa}
     6660
     6661
     6662%\subsection{\texorpdfstring{\protect\lstinline@Clock@}{Clock}}
     6663\subsection{\texorpdfstring{\LstKeywordStyle{\textmd{Clock}}}{Clock}}
     6664\label{s:Clock}
     6665
     6666\leavevmode
     6667\begin{cfa}[aboveskip=0pt,belowskip=0pt]
     6668struct Clock {
     6669        Duration offset;                                        §\C{// for virtual clock: contains offset from real-time}§
     6670        int clocktype;                                          §\C{// implementation only -1 (virtual), CLOCK\_REALTIME}§
     6671};
     6672
     6673void resetClock( Clock & clk );
     6674void resetClock( Clock & clk, Duration adj );
     6675void ?{}( Clock & clk );
     6676void ?{}( Clock & clk, Duration adj );
     6677Duration getRes();
     6678Time getTimeNsec();                                             §\C{// with nanoseconds}§
     6679Time getTime();                                                 §\C{// without nanoseconds}§
     6680Time getTime( Clock & clk );
     6681Time ?()( Clock & clk );
     6682timeval getTime( Clock & clk );
     6683tm getTime( Clock & clk );
     6684\end{cfa}
     6685
     6686
    63636687\section{Multi-precision Integers}
    63646688\label{s:MultiPrecisionIntegers}
     
    66586982\end{cfa}
    66596983
    6660 
    66616984\bibliographystyle{plain}
    66626985\bibliography{pl}
  • src/CodeGen/CodeGenerator.cc

    rb2fe1c9 r32cab5b  
    203203
    204204        void CodeGenerator::handleAggregate( AggregateDecl * aggDecl, const std::string & kind ) {
    205                 genAttributes( aggDecl->get_attributes() );
    206 
    207205                if( ! aggDecl->get_parameters().empty() && ! genC ) {
    208206                        // assertf( ! genC, "Aggregate type parameters should not reach code generation." );
     
    213211                }
    214212
    215                 output << kind << aggDecl->get_name();
     213                output << kind;
     214                genAttributes( aggDecl->get_attributes() );
     215                output << aggDecl->get_name();
    216216
    217217                if ( aggDecl->has_body() ) {
     
    298298                        output << " }";
    299299                }
     300        }
     301
     302        void CodeGenerator::postvisit( StaticAssertDecl * assertDecl ) {
     303                output << "_Static_assert(";
     304                assertDecl->condition->accept( *visitor );
     305                output << ", ";
     306                assertDecl->message->accept( *visitor );
     307                output << ")";
    300308        }
    301309
     
    928936                        output << "continue";
    929937                        break;
     938                  case BranchStmt::FallThrough:
     939                  case BranchStmt::FallThroughDefault:
     940                        assertf( ! genC, "fallthru should not reach code generation." );
     941                  output << "fallthru";
     942                        break;
    930943                } // switch
     944                // print branch target for labelled break/continue/fallthru in debug mode
     945                if ( ! genC && branchStmt->get_type() != BranchStmt::Goto ) {
     946                        if ( ! branchStmt->get_target().empty() ) {
     947                                output << " " << branchStmt->get_target();
     948                        } else if ( branchStmt->get_type() == BranchStmt::FallThrough ) {
     949                                output << " default";
     950                        }
     951                }
    931952                output << ";";
    932953        }
  • src/CodeGen/CodeGenerator.h

    rb2fe1c9 r32cab5b  
    4242                void postvisit( FunctionDecl * );
    4343                void postvisit( ObjectDecl * );
    44                 void postvisit( UnionDecl *aggregateDecl );
    45                 void postvisit( EnumDecl *aggregateDecl );
    46                 void postvisit( TraitDecl *aggregateDecl );
    47                 void postvisit( TypedefDecl *typeDecl );
    48                 void postvisit( TypeDecl *typeDecl );
     44                void postvisit( UnionDecl * aggregateDecl );
     45                void postvisit( EnumDecl * aggregateDecl );
     46                void postvisit( TraitDecl * aggregateDecl );
     47                void postvisit( TypedefDecl * typeDecl );
     48                void postvisit( TypeDecl * typeDecl );
     49                void postvisit( StaticAssertDecl * assertDecl );
    4950
    5051                //*** Initializer
  • src/CodeGen/OperatorTable.cc

    rb2fe1c9 r32cab5b  
    7979        } // namespace
    8080
    81         bool operatorLookup( std::string funcName, OperatorInfo &info ) {
     81        bool operatorLookup( const std::string & funcName, OperatorInfo & info ) {
    8282                static bool init = false;
    8383                if ( ! init ) {
     
    100100                        return true;
    101101                } // if
     102        }
     103
     104        bool isOperator( const std::string & funcName ) {
     105                OperatorInfo info;
     106                return operatorLookup( funcName, info );
    102107        }
    103108
  • src/CodeGen/OperatorTable.h

    rb2fe1c9 r32cab5b  
    4141        };
    4242
    43         bool operatorLookup( std::string funcName, OperatorInfo &info );
     43        bool isOperator( const std::string & funcName );
     44        bool operatorLookup( const std::string & funcName, OperatorInfo & info );
    4445
    4546        bool isConstructor( const std::string & );
  • src/Common/Debug.h

    rb2fe1c9 r32cab5b  
    2828namespace Debug {
    2929        /// debug codegen a translation unit
    30         static inline void codeGen( __attribute__((unused)) const std::list< Declaration * > & translationUnit, __attribute__((unused)) const std::string & label ) {
     30        static inline void codeGen( __attribute__((unused)) const std::list< Declaration * > & translationUnit, __attribute__((unused)) const std::string & label, __attribute__((unused)) LinkageSpec::Spec linkageFilter = LinkageSpec::Compiler ) {
    3131        #ifdef DEBUG
    3232                std::list< Declaration * > decls;
    3333
    34                 filter( translationUnit.begin(), translationUnit.end(), back_inserter( decls ), []( Declaration * decl ) {
    35                         return ! LinkageSpec::isBuiltin( decl->get_linkage() );
     34                filter( translationUnit.begin(), translationUnit.end(), back_inserter( decls ), [linkageFilter]( Declaration * decl ) {
     35                        return ! (decl->linkage & linkageFilter);
    3636                });
    3737
    3838                std::cerr << "======" << label << "======" << std::endl;
    39                 CodeGen::generate( decls, std::cerr, false, true );
     39                CodeGen::generate( decls, std::cerr, true, true );
    4040        #endif
    4141        } // dump
    4242
    43         static inline void treeDump( __attribute__((unused)) const std::list< Declaration * > & translationUnit, __attribute__((unused)) const std::string & label ) {
     43        static inline void treeDump( __attribute__((unused)) const std::list< Declaration * > & translationUnit, __attribute__((unused)) const std::string & label, __attribute__((unused)) LinkageSpec::Spec linkageFilter = LinkageSpec::Compiler ) {
    4444        #ifdef DEBUG
    4545                std::list< Declaration * > decls;
    4646
    47                 filter( translationUnit.begin(), translationUnit.end(), back_inserter( decls ), []( Declaration * decl ) {
    48                         return ! LinkageSpec::isBuiltin( decl->get_linkage() );
     47                filter( translationUnit.begin(), translationUnit.end(), back_inserter( decls ), [linkageFilter]( Declaration * decl ) {
     48                        return ! (decl->linkage & linkageFilter);
    4949                });
    5050
  • src/Common/ErrorObjects.h

    rb2fe1c9 r32cab5b  
    3535class SemanticErrorException : public std::exception {
    3636  public:
    37         SemanticErrorException() = default;
     37        SemanticErrorException() = default;
    3838        SemanticErrorException( CodeLocation location, std::string error );
    3939        ~SemanticErrorException() throw() {}
  • src/Common/PassVisitor.h

    rb2fe1c9 r32cab5b  
    6666        virtual void visit( TypedefDecl * typeDecl ) override final;
    6767        virtual void visit( AsmDecl * asmDecl ) override final;
     68        virtual void visit( StaticAssertDecl * assertDecl ) override final;
    6869
    6970        virtual void visit( CompoundStmt * compoundStmt ) override final;
     
    161162        virtual Declaration * mutate( TypedefDecl * typeDecl ) override final;
    162163        virtual AsmDecl * mutate( AsmDecl * asmDecl ) override final;
     164        virtual StaticAssertDecl * mutate( StaticAssertDecl * assertDecl ) override final;
    163165
    164166        virtual CompoundStmt * mutate( CompoundStmt * compoundStmt ) override final;
  • src/Common/PassVisitor.impl.h

    rb2fe1c9 r32cab5b  
    685685
    686686//--------------------------------------------------------------------------
     687// StaticAssertDecl
     688template< typename pass_type >
     689void PassVisitor< pass_type >::visit( StaticAssertDecl * node ) {
     690        VISIT_START( node );
     691
     692        maybeAccept_impl( node->condition, *this );
     693        maybeAccept_impl( node->message  , *this );
     694
     695        VISIT_END( node );
     696}
     697
     698template< typename pass_type >
     699StaticAssertDecl * PassVisitor< pass_type >::mutate( StaticAssertDecl * node ) {
     700        MUTATE_START( node );
     701
     702        maybeMutate_impl( node->condition, *this );
     703        maybeMutate_impl( node->message  , *this );
     704
     705        MUTATE_END( StaticAssertDecl, node );
     706}
     707
     708//--------------------------------------------------------------------------
    687709// CompoundStmt
    688710template< typename pass_type >
     
    14901512        indexerScopedAccept( node->result, *this );
    14911513        maybeAccept_impl   ( node->type  , *this );
    1492         maybeAccept_impl   ( node->member, *this );
    14931514
    14941515        VISIT_END( node );
     
    15021523        indexerScopedMutate( node->result, *this );
    15031524        maybeMutate_impl   ( node->type  , *this );
    1504         maybeMutate_impl   ( node->member, *this );
    15051525
    15061526        MUTATE_END( Expression, node );
  • src/Common/SemanticError.h

    rb2fe1c9 r32cab5b  
    3838constexpr const char * const WarningFormats[] = {
    3939        "self assignment of expression: %s",
     40        "rvalue to reference conversion of rvalue: %s",
    4041};
    4142
    4243enum class Warning {
    4344        SelfAssignment,
     45        RvalueToReferenceConversion,
    4446        NUMBER_OF_WARNINGS, //This MUST be the last warning
    4547};
     
    5052);
    5153
    52 #define SemanticWarning(loc, id, ...) SemanticWarningImpl(loc, id, WarningFormats[(int)id], __VA_ARGS__)
     54// ## used here to allow empty __VA_ARGS__
     55#define SemanticWarning(loc, id, ...) SemanticWarningImpl(loc, id, WarningFormats[(int)id], ## __VA_ARGS__)
    5356
    5457void SemanticWarningImpl (CodeLocation loc, Warning warn, const char * const fmt, ...) __attribute__((format(printf, 3, 4)));
  • src/ControlStruct/ExceptTranslate.cc

    rb2fe1c9 r32cab5b  
    3434#include "SynTree/Statement.h"        // for CompoundStmt, CatchStmt, ThrowStmt
    3535#include "SynTree/Type.h"             // for FunctionType, Type, noQualifiers
    36 #include "SynTree/VarExprReplacer.h"  // for VarExprReplacer, VarExprReplace...
     36#include "SynTree/DeclReplacer.h"     // for DeclReplacer
    3737#include "SynTree/Visitor.h"          // for acceptAll
    3838
     
    314314                        // Update variables in the body to point to this local copy.
    315315                        {
    316                                 VarExprReplacer::DeclMap mapping;
     316                                DeclReplacer::DeclMap mapping;
    317317                                mapping[ handler_decl ] = local_except;
    318                                 VarExprReplacer::replace( handler->body, mapping );
     318                                DeclReplacer::replace( handler->body, mapping );
    319319                        }
    320320
  • src/ControlStruct/MLEMutator.cc

    rb2fe1c9 r32cab5b  
    1010// Created On       : Mon May 18 07:44:20 2015
    1111// Last Modified By : Peter A. Buhr
    12 // Last Modified On : Thu Aug  4 11:21:32 2016
    13 // Update Count     : 202
     12// Last Modified On : Thu Mar  8 17:08:25 2018
     13// Update Count     : 219
    1414//
    1515
     
    3838        }
    3939        namespace {
    40                 Statement * isLoop( Statement * stmt ) { return dynamic_cast< WhileStmt * >( stmt ) ? stmt : dynamic_cast< ForStmt * >( stmt ) ? stmt : 0; }
    41         }
     40                bool isLoop( const MLEMutator::Entry & e ) { return dynamic_cast< WhileStmt * >( e.get_controlStructure() ) || dynamic_cast< ForStmt * >( e.get_controlStructure() ); }
     41                bool isSwitch( const MLEMutator::Entry & e ) { return dynamic_cast< SwitchStmt *>( e.get_controlStructure() ); }
     42
     43                bool isBreakTarget( const MLEMutator::Entry & e ) { return isLoop( e ) || isSwitch( e ) || dynamic_cast< CompoundStmt *>( e.get_controlStructure() ); }
     44                bool isContinueTarget( const MLEMutator::Entry & e ) { return isLoop( e ); }
     45                bool isFallthroughTarget( const MLEMutator::Entry & e ) { return dynamic_cast< CaseStmt *>( e.get_controlStructure() );; }
     46                bool isFallthroughDefaultTarget( const MLEMutator::Entry & e ) { return isSwitch( e ); }
     47        } // namespace
    4248
    4349        // break labels have to come after the statement they break out of, so mutate a statement, then if they inform us
    4450        // through the breakLabel field tha they need a place to jump to on a break statement, add the break label to the
    4551        // body of statements
    46         void MLEMutator::fixBlock( std::list< Statement * > &kids ) {
     52        void MLEMutator::fixBlock( std::list< Statement * > &kids, bool caseClause ) {
     53                SemanticErrorException errors;
     54
    4755                for ( std::list< Statement * >::iterator k = kids.begin(); k != kids.end(); k++ ) {
    48                         *k = (*k)->acceptMutator(*visitor);
     56                        if ( caseClause ) {
     57                                // once a label is seen, it's no longer a valid fallthrough target
     58                                for ( Label & l : (*k)->labels ) {
     59                                        fallthroughLabels.erase( l );
     60                                }
     61                        }
     62
     63                        // aggregate errors since the PassVisitor mutate loop was unrollled
     64                        try {
     65                                *k = (*k)->acceptMutator(*visitor);
     66                        } catch( SemanticErrorException &e ) {
     67                                errors.append( e );
     68                        }
    4969
    5070                        if ( ! get_breakLabel().empty() ) {
     
    5575                        } // if
    5676                } // for
     77
     78                if ( ! errors.isEmpty() ) {
     79                        throw errors;
     80                }
    5781        }
    5882
     
    6387                        Label brkLabel = generator->newLabel("blockBreak", cmpndStmt);
    6488                        enclosingControlStructures.push_back( Entry( cmpndStmt, brkLabel ) );
     89                        GuardAction( [this]() { enclosingControlStructures.pop_back(); } );
    6590                } // if
    6691
     
    7499                                set_breakLabel( enclosingControlStructures.back().useBreakExit() );
    75100                        } // if
    76                         enclosingControlStructures.pop_back();
    77101                } // if
    78102        }
     
    112136                                        if ( isContinue ) {
    113137                                                // continue target is outermost loop
    114                                                 targetEntry = std::find_if( enclosingControlStructures.rbegin(), enclosingControlStructures.rend(), [](Entry &e) { return isLoop( e.get_controlStructure() ); } );
     138                                                targetEntry = std::find_if( enclosingControlStructures.rbegin(), enclosingControlStructures.rend(), isContinueTarget );
    115139                                        } else {
    116                                                 // break target is outmost control structure
    117                                                 if ( enclosingControlStructures.empty() ) SemanticError( branchStmt->location, "'break' outside a loop, switch, or labelled block" );
    118                                                 targetEntry = enclosingControlStructures.rbegin();
     140                                                // break target is outermost loop, switch, or block control structure
     141                                                if ( enclosingControlStructures.empty() ) SemanticError( branchStmt->location, "'break' outside a loop, 'switch', or labelled block" );
     142                                                targetEntry = std::find_if( enclosingControlStructures.rbegin(), enclosingControlStructures.rend(), isBreakTarget );
    119143                                        } // if
    120144                                } else {
     
    123147                                } // if
    124148                                // ensure that selected target is valid
    125                                 if ( targetEntry == enclosingControlStructures.rend() || (isContinue && ! isLoop( targetEntry->get_controlStructure() ) ) ) {
     149                                if ( targetEntry == enclosingControlStructures.rend() || (isContinue && ! isContinueTarget( *targetEntry ) ) ) {
    126150                                        SemanticError( branchStmt->location, toString( (isContinue ? "'continue'" : "'break'"), " target must be an enclosing ", (isContinue ? "loop: " : "control structure: "), originalTarget ) );
    127151                                } // if
    128152                                break;
    129153                        }
     154                        case BranchStmt::FallThrough:
     155                                targetEntry = std::find_if( enclosingControlStructures.rbegin(), enclosingControlStructures.rend(), isFallthroughTarget );
     156                                // ensure that selected target is valid
     157                                if ( targetEntry == enclosingControlStructures.rend() ) {
     158                                        SemanticError( branchStmt->location, "'fallthrough' must be enclosed in a 'switch' or 'choose'" );
     159                                } // if
     160                                if ( branchStmt->get_target() != "" ) {
     161                                        // labelled fallthrough
     162                                        // target must be in the set of valid fallthrough labels
     163                                        if ( ! fallthroughLabels.count( branchStmt->get_target() ) ) {
     164                                                SemanticError( branchStmt->location, toString( "'fallthrough' target must be a later case statement: ", originalTarget ) );
     165                                        }
     166                                        return new BranchStmt( originalTarget, BranchStmt::Goto );
     167                                }
     168                                break;
     169                        case BranchStmt::FallThroughDefault: {
     170                                // fallthrough default
     171                                targetEntry = std::find_if( enclosingControlStructures.rbegin(), enclosingControlStructures.rend(), isFallthroughDefaultTarget );
     172
     173                                // ensure that fallthrough is within a switch or choose
     174                                if ( targetEntry == enclosingControlStructures.rend() ) {
     175                                        SemanticError( branchStmt->location, "'fallthrough' must be enclosed in a 'switch' or 'choose'" );
     176                                } // if
     177
     178                                // ensure that switch or choose has a default clause
     179                                SwitchStmt * switchStmt = strict_dynamic_cast< SwitchStmt * >( targetEntry->get_controlStructure() );
     180                                bool foundDefault = false;
     181                                for ( Statement * stmt : switchStmt->statements ) {
     182                                        CaseStmt * caseStmt = strict_dynamic_cast< CaseStmt * >( stmt );
     183                                        if ( caseStmt->isDefault() ) {
     184                                                foundDefault = true;
     185                                        } // if
     186                                } // for
     187                                if ( ! foundDefault ) {
     188                                        SemanticError( branchStmt->location, "'fallthrough default' must be enclosed in a 'switch' or 'choose' control structure with a 'default' clause" );
     189                                }
     190                                break;
     191                        }
     192
    130193                        default:
    131194                                assert( false );
     
    142205                                assert( targetEntry->useContExit() != "");
    143206                                exitLabel = targetEntry->useContExit();
     207                                break;
     208                  case BranchStmt::FallThrough:
     209                                assert( targetEntry->useFallExit() != "");
     210                                exitLabel = targetEntry->useFallExit();
     211                                break;
     212                  case BranchStmt::FallThroughDefault:
     213                                assert( targetEntry->useFallDefaultExit() != "");
     214                                exitLabel = targetEntry->useFallDefaultExit();
     215                                // check that fallthrough default comes before the default clause
     216                                if ( ! targetEntry->isFallDefaultValid() ) {
     217                                        SemanticError( branchStmt->location, "'fallthrough default' must precede the 'default' clause" );
     218                                }
    144219                                break;
    145220                  default:
     
    187262                Label contLabel = generator->newLabel("loopContinue", loopStmt);
    188263                enclosingControlStructures.push_back( Entry( loopStmt, brkLabel, contLabel ) );
     264                GuardAction( [this]() { enclosingControlStructures.pop_back(); } );
    189265        }
    190266
     
    197273
    198274                // this will take the necessary steps to add definitions of the previous two labels, if they are used.
    199                 loopStmt->set_body( mutateLoop( loopStmt->get_body(), e ) );
    200                 enclosingControlStructures.pop_back();
     275                loopStmt->body = mutateLoop( loopStmt->get_body(), e );
    201276                return loopStmt;
    202277        }
     
    224299                        Label brkLabel = generator->newLabel("blockBreak", ifStmt);
    225300                        enclosingControlStructures.push_back( Entry( ifStmt, brkLabel ) );
     301                        GuardAction( [this]() { enclosingControlStructures.pop_back(); } );
    226302                } // if
    227303        }
     
    233309                                set_breakLabel( enclosingControlStructures.back().useBreakExit() );
    234310                        } // if
    235                         enclosingControlStructures.pop_back();
    236311                } // if
    237312                return ifStmt;
     
    240315        void MLEMutator::premutate( CaseStmt *caseStmt ) {
    241316                visit_children = false;
     317
     318                // mark default as seen before visiting its statements to catch default loops
     319                if ( caseStmt->isDefault() ) {
     320                        enclosingControlStructures.back().seenDefault();
     321                } // if
     322
    242323                caseStmt->condition = maybeMutate( caseStmt->condition, *visitor );
    243                 fixBlock( caseStmt->stmts );
     324                Label fallLabel = generator->newLabel( "fallThrough", caseStmt );
     325                {
     326                        // ensure that stack isn't corrupted by exceptions in fixBlock
     327                        auto guard = makeFuncGuard( [&]() { enclosingControlStructures.push_back( Entry( caseStmt, fallLabel ) ); }, [this]() { enclosingControlStructures.pop_back(); } );
     328
     329                        // empty case statement
     330                        if( ! caseStmt->stmts.empty() ) {
     331                                // the parser ensures that all statements in a case are grouped into a block
     332                                CompoundStmt * block = strict_dynamic_cast< CompoundStmt * >( caseStmt->stmts.front() );
     333                                fixBlock( block->kids, true );
     334
     335                                // add fallthrough label if necessary
     336                                assert( ! enclosingControlStructures.empty() );
     337                                if ( enclosingControlStructures.back().isFallUsed() ) {
     338                                        std::list<Label> ls{ enclosingControlStructures.back().useFallExit() };
     339                                        caseStmt->stmts.push_back( new NullStmt( ls ) );
     340                                } // if
     341                        } // if
     342                }
     343                assert( ! enclosingControlStructures.empty() );
     344                assertf( dynamic_cast<SwitchStmt *>( enclosingControlStructures.back().get_controlStructure() ), "Control structure enclosing a case clause must be a switch, but is: %s", toCString( enclosingControlStructures.back().get_controlStructure() ) );
     345                if ( caseStmt->isDefault() ) {
     346                        if ( enclosingControlStructures.back().isFallDefaultUsed() ) {
     347                                // add fallthrough default label if necessary
     348                                std::list<Label> ls{ enclosingControlStructures.back().useFallDefaultExit() };
     349                                caseStmt->stmts.push_front( new NullStmt( ls ) );
     350                        } // if
     351                } // if
    244352        }
    245353
     
    247355                // generate a label for breaking out of a labeled switch
    248356                Label brkLabel = generator->newLabel("switchBreak", switchStmt);
    249                 enclosingControlStructures.push_back( Entry(switchStmt, brkLabel) );
     357                auto it = std::find_if( switchStmt->statements.rbegin(), switchStmt->statements.rend(), [](Statement * stmt) {
     358                        CaseStmt * caseStmt = strict_dynamic_cast< CaseStmt * >( stmt );
     359                        return caseStmt->isDefault();
     360                });
     361                CaseStmt * defaultCase = it != switchStmt->statements.rend() ? strict_dynamic_cast<CaseStmt *>( *it ) : nullptr;
     362                Label fallDefaultLabel = defaultCase ? generator->newLabel( "fallThroughDefault", defaultCase ) : "";
     363                enclosingControlStructures.push_back( Entry(switchStmt, brkLabel, fallDefaultLabel) );
     364                GuardAction( [this]() { enclosingControlStructures.pop_back(); } );
     365
     366                // Collect valid labels for fallthrough. This is initially all labels at the same level as a case statement.
     367                // As labels are seen during traversal, they are removed, since fallthrough is not allowed to jump backwards.
     368                for ( Statement * stmt : switchStmt->statements ) {
     369                        CaseStmt * caseStmt = strict_dynamic_cast< CaseStmt * >( stmt );
     370                        if ( caseStmt->stmts.empty() ) continue;
     371                        CompoundStmt * block = dynamic_cast< CompoundStmt * >( caseStmt->stmts.front() );
     372                        for ( Statement * stmt : block->kids ) {
     373                                for ( Label & l : stmt->labels ) {
     374                                        fallthroughLabels.insert( l );
     375                                }
     376                        }
     377                }
    250378        }
    251379
     
    272400
    273401                assert ( enclosingControlStructures.back() == switchStmt );
    274                 enclosingControlStructures.pop_back();
    275402                return switchStmt;
    276403        }
  • src/ControlStruct/MLEMutator.h

    rb2fe1c9 r32cab5b  
    1010// Created On       : Mon May 18 07:44:20 2015
    1111// Last Modified By : Peter A. Buhr
    12 // Last Modified On : Sat Jul 22 09:19:59 2017
    13 // Update Count     : 35
     12// Last Modified On : Thu Mar  8 16:42:32 2018
     13// Update Count     : 41
    1414//
    1515
     
    1919#include <map>                     // for map
    2020#include <string>                  // for string
     21#include <set>                     // for unordered_set
    2122
    2223#include "Common/PassVisitor.h"
     
    2930        class LabelGenerator;
    3031
    31         class MLEMutator : public WithVisitorRef<MLEMutator>, public WithShortCircuiting {
     32        class MLEMutator : public WithVisitorRef<MLEMutator>, public WithShortCircuiting, public WithGuards {
     33          public:
    3234                class Entry;
    33 
    34           public:
    3535                MLEMutator( std::map<Label, Statement *> *t, LabelGenerator *gen = 0 ) : targetTable( t ), breakLabel(std::string("")), generator( gen ) {}
    3636                ~MLEMutator();
     
    5252                Label &get_breakLabel() { return breakLabel; }
    5353                void set_breakLabel( Label newValue ) { breakLabel = newValue; }
    54           private:
     54
    5555                class Entry {
    5656                  public:
    57                         explicit Entry( Statement *_loop, Label _breakExit, Label _contExit = Label("") ) :
    58                                 loop( _loop ), breakExit( _breakExit ), contExit( _contExit ), breakUsed(false), contUsed(false) {}
     57                        // specialized constructors for each combination of statement with labelled break/continue/fallthrough that is valid to cleanup the use cases
     58                        explicit Entry( ForStmt *stmt, Label breakExit, Label contExit ) :
     59                                stmt( stmt ), breakExit( breakExit ), contExit( contExit ) {}
    5960
    60                         bool operator==( const Statement *stmt ) { return loop == stmt; }
    61                         bool operator!=( const Statement *stmt ) { return loop != stmt; }
     61                        explicit Entry( WhileStmt *stmt, Label breakExit, Label contExit ) :
     62                                stmt( stmt ), breakExit( breakExit ), contExit( contExit ) {}
    6263
    63                         bool operator==( const Entry &other ) { return loop == other.get_controlStructure(); }
     64                        explicit Entry( CompoundStmt *stmt, Label breakExit ) :
     65                                stmt( stmt ), breakExit( breakExit ) {}
    6466
    65                         Statement *get_controlStructure() const { return loop; }
     67                        explicit Entry( IfStmt *stmt, Label breakExit ) :
     68                                stmt( stmt ), breakExit( breakExit ) {}
     69
     70                        explicit Entry( CaseStmt *stmt, Label fallExit ) :
     71                                stmt( stmt ), fallExit( fallExit ) {}
     72
     73                        explicit Entry( SwitchStmt *stmt, Label breakExit, Label fallDefaultExit ) :
     74                                stmt( stmt ), breakExit( breakExit ), fallDefaultExit( fallDefaultExit ) {}
     75
     76                        bool operator==( const Statement *other ) { return stmt == other; }
     77                        bool operator!=( const Statement *other ) { return stmt != other; }
     78
     79                        bool operator==( const Entry &other ) { return stmt == other.get_controlStructure(); }
     80
     81                        Statement *get_controlStructure() const { return stmt; }
    6682
    6783                        Label useContExit() { contUsed = true; return contExit; }
    6884                        Label useBreakExit() { breakUsed = true; return breakExit; }
     85                        Label useFallExit() { fallUsed = true; return fallExit; }
     86                        Label useFallDefaultExit() { fallDefaultUsed = true; return fallDefaultExit; }
    6987
    7088                        bool isContUsed() const { return contUsed; }
    7189                        bool isBreakUsed() const { return breakUsed; }
     90                        bool isFallUsed() const { return fallUsed; }
     91                        bool isFallDefaultUsed() const { return fallDefaultUsed; }
     92                        void seenDefault() { fallDefaultValid = false; }
     93                        bool isFallDefaultValid() const { return fallDefaultValid; }
    7294                  private:
    73                         Statement *loop;
    74                         Label breakExit, contExit;
    75                         bool breakUsed, contUsed;
     95                        Statement *stmt;
     96                        Label breakExit, contExit, fallExit, fallDefaultExit;
     97                        bool breakUsed = false, contUsed = false, fallUsed = false, fallDefaultUsed = false;
     98                        bool fallDefaultValid = true;
    7699                };
    77100
     101          private:
    78102                std::map< Label, Statement * > *targetTable;
     103                std::set< Label > fallthroughLabels;
    79104                std::list< Entry > enclosingControlStructures;
    80105                Label breakLabel;
     
    87112                Statement * posthandleLoopStmt( LoopClass * loopStmt );
    88113
    89                 void fixBlock( std::list< Statement * > &kids );
     114                void fixBlock( std::list< Statement * > &kids, bool caseClause = false );
    90115        };
    91116} // namespace ControlStruct
  • src/GenPoly/GenPoly.cc

    rb2fe1c9 r32cab5b  
    100100                if ( dynamic_cast< TypeInstType * >( type ) ) {
    101101                        return type;
     102                } else if ( ArrayType * arrayType = dynamic_cast< ArrayType * >( type ) ) {
     103                        return isPolyType( arrayType->base, env );
    102104                } else if ( StructInstType *structType = dynamic_cast< StructInstType* >( type ) ) {
    103105                        if ( hasPolyParams( structType->get_parameters(), env ) ) return type;
     
    115117                                return type;
    116118                        }
     119                } else if ( ArrayType * arrayType = dynamic_cast< ArrayType * >( type ) ) {
     120                        return isPolyType( arrayType->base, tyVars, env );
    117121                } else if ( StructInstType *structType = dynamic_cast< StructInstType* >( type ) ) {
    118122                        if ( hasPolyParams( structType->get_parameters(), tyVars, env ) ) return type;
  • src/GenPoly/Lvalue.cc

    rb2fe1c9 r32cab5b  
    4545                Expression * mkDeref( Expression * arg ) {
    4646                        if ( SymTab::dereferenceOperator ) {
     47                                // note: reference depth can be arbitrarily deep here, so peel off the outermost pointer/reference, not just pointer because they are effecitvely equivalent in this pass
    4748                                VariableExpr * deref = new VariableExpr( SymTab::dereferenceOperator );
    4849                                deref->result = new PointerType( Type::Qualifiers(), deref->result );
     
    5960                }
    6061
    61                 struct ReferenceConversions final {
     62                struct ReferenceConversions final : public WithStmtsToAdd {
    6263                        Expression * postmutate( CastExpr * castExpr );
    6364                        Expression * postmutate( AddressExpr * addrExpr );
     
    114115        }
    115116
    116         void convertLvalue( std::list< Declaration* >& translationUnit ) {
     117        void convertLvalue( std::list< Declaration* > & translationUnit ) {
    117118                PassVisitor<ReferenceConversions> refCvt;
    118119                PassVisitor<ReferenceTypeElimination> elim;
     
    150151                                        // use type of return variable rather than expr result type, since it may have been changed to a pointer type
    151152                                        FunctionType * ftype = GenPoly::getFunctionType( func->get_type() );
    152                                         Type * ret = ftype->get_returnVals().empty() ? nullptr : ftype->get_returnVals().front()->get_type();
    153                                         return func->get_linkage() == LinkageSpec::Intrinsic && dynamic_cast<ReferenceType *>( ret );
     153                                        Type * ret = ftype->returnVals.empty() ? nullptr : ftype->returnVals.front()->get_type();
     154                                        return func->linkage == LinkageSpec::Intrinsic && dynamic_cast<ReferenceType *>( ret );
    154155                                }
    155156                        }
     
    160161                        if ( isIntrinsicReference( appExpr ) ) {
    161162                                // eliminate reference types from intrinsic applications - now they return lvalues
    162                                 Type * result = appExpr->get_result();
    163                                 appExpr->set_result( result->stripReferences()->clone() );
    164                                 appExpr->get_result()->set_lvalue( true );
     163                                Type * result = appExpr->result;
     164                                appExpr->result = result->stripReferences()->clone();
     165                                appExpr->result->set_lvalue( true );
    165166                                if ( ! inIntrinsic ) {
    166167                                        // when not in an intrinsic function, add a cast to
    167168                                        // don't add cast when in an intrinsic function, since they already have the cast
    168169                                        Expression * ret = new CastExpr( appExpr, result );
    169                                         ret->set_env( appExpr->get_env() );
    170                                         appExpr->set_env( nullptr );
     170                                        std::swap( ret->env, appExpr->env );
    171171                                        return ret;
    172172                                }
     
    187187                                assertf( ftype, "Function declaration does not have function type." );
    188188                                // can be of differing lengths only when function is variadic
    189                                 assertf( ftype->get_parameters().size() == appExpr->get_args().size() || ftype->get_isVarArgs(), "ApplicationExpr args do not match formal parameter type." );
     189                                assertf( ftype->parameters.size() == appExpr->args.size() || ftype->isVarArgs, "ApplicationExpr args do not match formal parameter type." );
    190190
    191191
    192192                                unsigned int i = 0;
    193                                 const unsigned int end = ftype->get_parameters().size();
    194                                 for ( auto p : unsafe_group_iterate( appExpr->get_args(), ftype->get_parameters() ) ) {
     193                                const unsigned int end = ftype->parameters.size();
     194                                for ( auto p : unsafe_group_iterate( appExpr->args, ftype->parameters ) ) {
    195195                                        if (i == end) break;
    196196                                        Expression *& arg = std::get<0>( p );
     
    198198                                        PRINT(
    199199                                                std::cerr << "pair<0>: " << arg << std::endl;
     200                                                std::cerr << " -- " << arg->result << std::endl;
    200201                                                std::cerr << "pair<1>: " << formal << std::endl;
    201202                                        )
    202203                                        if ( dynamic_cast<ReferenceType*>( formal ) ) {
    203                                                 if ( isIntrinsicReference( arg ) ) { // do not combine conditions, because that changes the meaning of the else if
    204                                                         if ( function->get_linkage() != LinkageSpec::Intrinsic ) { // intrinsic functions that turn pointers into references
    205                                                                 // if argument is dereference or array subscript, the result isn't REALLY a reference, so it's not necessary to fix the argument
    206                                                                 PRINT(
    207                                                                         std::cerr << "===is intrinsic arg in non-intrinsic call - adding address" << std::endl;
    208                                                                 )
    209                                                                 arg = new AddressExpr( arg );
    210                                                         }
    211                                                 } else if ( function->get_linkage() == LinkageSpec::Intrinsic ) {
    212                                                         // std::cerr << "===adding deref to arg" << std::endl;
    213                                                         // if the parameter is a reference, add a dereference to the reference-typed argument.
    214                                                         Type * baseType = InitTweak::getPointerBase( arg->get_result() );
    215                                                         assertf( baseType, "parameter is reference, arg must be pointer or reference: %s", toString( arg->get_result() ).c_str() );
     204                                                PRINT(
     205                                                        std::cerr << "===formal is reference" << std::endl;
     206                                                )
     207                                                // TODO: it's likely that the second condition should be ... && ! isIntrinsicReference( arg ), but this requires investigation.
     208                                                if ( function->get_linkage() != LinkageSpec::Intrinsic && isIntrinsicReference( arg ) ) {
     209                                                        // if argument is dereference or array subscript, the result isn't REALLY a reference, but non-intrinsic functions expect a reference: take address
     210                                                        PRINT(
     211                                                                std::cerr << "===is intrinsic arg in non-intrinsic call - adding address" << std::endl;
     212                                                        )
     213                                                        arg = new AddressExpr( arg );
     214                                                } else if ( function->get_linkage() == LinkageSpec::Intrinsic && arg->result->referenceDepth() != 0 ) {
     215                                                        // argument is a 'real' reference, but function expects a C lvalue: add a dereference to the reference-typed argument
     216                                                        PRINT(
     217                                                                std::cerr << "===is non-intrinsic arg in intrinsic call - adding deref to arg" << std::endl;
     218                                                        )
     219                                                        Type * baseType = InitTweak::getPointerBase( arg->result );
     220                                                        assertf( baseType, "parameter is reference, arg must be pointer or reference: %s", toString( arg->result ).c_str() );
    216221                                                        PointerType * ptrType = new PointerType( Type::Qualifiers(), baseType->clone() );
    217                                                         delete arg->get_result();
     222                                                        delete arg->result;
    218223                                                        arg->set_result( ptrType );
    219224                                                        arg = mkDeref( arg );
     225                                                        assertf( arg->result->referenceDepth() == 0, "Reference types should have been eliminated from intrinsic function calls, but weren't: %s", toCString( arg->result ) );
    220226                                                }
    221227                                        }
     
    249255                Expression * AddrRef::postmutate( AddressExpr * addrExpr ) {
    250256                        if ( refDepth == 0 ) {
    251                                 if ( ! isIntrinsicReference( addrExpr->get_arg() ) ) {
     257                                if ( ! isIntrinsicReference( addrExpr->arg ) ) {
    252258                                        // try to avoid ?[?]
    253                                         refDepth = addrExpr->get_arg()->get_result()->referenceDepth();
     259                                        refDepth = addrExpr->arg->result->referenceDepth();
    254260                                }
    255261                        }
     
    280286                        // pointer casts in the right places.
    281287
    282                         // conversion to reference type
    283                         if ( ReferenceType * refType = dynamic_cast< ReferenceType * >( castExpr->get_result() ) ) {
    284                                 (void)refType;
    285                                 if ( ReferenceType * otherRef = dynamic_cast< ReferenceType * >( castExpr->get_arg()->get_result() ) ) {
    286                                         // nothing to do if casting from reference to reference.
    287                                         (void)otherRef;
    288                                         PRINT( std::cerr << "convert reference to reference -- nop" << std::endl; )
    289                                         if ( isIntrinsicReference( castExpr->get_arg() ) ) {
    290                                                 Expression * callExpr = castExpr->get_arg();
    291                                                 PRINT(
    292                                                         std::cerr << "but arg is deref -- &" << std::endl;
    293                                                         std::cerr << callExpr << std::endl;
    294                                                 )
    295                                                 callExpr = new AddressExpr( callExpr ); // this doesn't work properly for multiple casts
    296                                                 delete callExpr->get_result();
    297                                                 callExpr->set_result( refType->clone() );
    298                                                 // move environment out to new top-level
    299                                                 callExpr->set_env( castExpr->get_env() );
    300                                                 castExpr->set_arg( nullptr );
    301                                                 castExpr->set_env( nullptr );
    302                                                 delete castExpr;
    303                                                 return callExpr;
    304                                         }
    305                                         int depth1 = refType->referenceDepth();
    306                                         int depth2 = otherRef->referenceDepth();
    307                                         int diff = depth1-depth2;
    308                                         if ( diff == 0 ) {
    309                                                 // conversion between references of the same depth
    310                                                 assertf( depth1 == depth2, "non-intrinsic reference with cast of reference to reference not yet supported: %d %d %s", depth1, depth2, toString( castExpr ).c_str() );
    311                                                 PRINT( std::cerr << castExpr << std::endl; )
    312                                                 return castExpr;
    313                                         } else if ( diff < 0 ) {
    314                                                 // conversion from reference to reference with less depth (e.g. int && -> int &): add dereferences
    315                                                 Expression * ret = castExpr->arg;
    316                                                 for ( int i = 0; i < diff; ++i ) {
    317                                                         ret = mkDeref( ret );
    318                                                 }
    319                                                 ret->env = castExpr->env;
    320                                                 delete ret->result;
    321                                                 ret->result = castExpr->result;
    322                                                 ret->result->set_lvalue( true ); // ensure result is lvalue
    323                                                 castExpr->env = nullptr;
    324                                                 castExpr->arg = nullptr;
    325                                                 castExpr->result = nullptr;
    326                                                 delete castExpr;
    327                                                 return ret;
    328                                         } else if ( diff > 0 ) {
    329                                                 // conversion from reference to reference with more depth (e.g. int & -> int &&): add address-of
    330                                                 Expression * ret = castExpr->arg;
    331                                                 for ( int i = 0; i < diff; ++i ) {
    332                                                         ret = new AddressExpr( ret );
    333                                                 }
    334                                                 ret->env = castExpr->env;
    335                                                 delete ret->result;
    336                                                 ret->result = castExpr->result;
    337                                                 castExpr->env = nullptr;
    338                                                 castExpr->arg = nullptr;
    339                                                 castExpr->result = nullptr;
    340                                                 delete castExpr;
    341                                                 return ret;
    342                                         }
    343 
    344                                         assertf( depth1 == depth2, "non-intrinsic reference with cast of reference to reference not yet supported: %d %d %s", depth1, depth2, toString( castExpr ).c_str() );
    345                                         PRINT( std::cerr << castExpr << std::endl; )
     288                        // Note: reference depth difference is the determining factor in what code is run, rather than whether something is
     289                        // reference type or not, since conversion still needs to occur when both types are references that differ in depth.
     290
     291                        Type * destType = castExpr->result;
     292                        Type * srcType = castExpr->arg->result;
     293                        int depth1 = destType->referenceDepth();
     294                        int depth2 = srcType->referenceDepth();
     295                        int diff = depth1 - depth2;
     296
     297                        if ( diff > 0 && ! srcType->get_lvalue() ) {
     298                                // rvalue to reference conversion -- introduce temporary
     299                                // know that reference depth of cast argument is 0, need to introduce n temporaries for reference depth of n, e.g.
     300                                //   (int &&&)3;
     301                                // becomes
     302                                //   int __ref_tmp_0 = 3;
     303                                //   int & __ref_tmp_1 = _&_ref_tmp_0;
     304                                //   int && __ref_tmp_2 = &__ref_tmp_1;
     305                                //   &__ref_tmp_2;
     306                                // the last & comes from the remaining reference conversion code
     307                                SemanticWarning( castExpr->arg->location, Warning::RvalueToReferenceConversion, toCString( castExpr->arg ) );
     308
     309                                static UniqueName tempNamer( "__ref_tmp_" );
     310                                ObjectDecl * temp = ObjectDecl::newObject( tempNamer.newName(), castExpr->arg->result->clone(), new SingleInit( castExpr->arg ) );
     311                                PRINT( std::cerr << "made temp: " << temp << std::endl; )
     312                                stmtsToAddBefore.push_back( new DeclStmt( temp ) );
     313                                for ( int i = 0; i < depth1-1; i++ ) { // xxx - maybe this should be diff-1? check how this works with reference type for srcType
     314                                        ObjectDecl * newTemp = ObjectDecl::newObject( tempNamer.newName(), new ReferenceType( Type::Qualifiers(), temp->type->clone() ), new SingleInit( new AddressExpr( new VariableExpr( temp ) ) ) );
     315                                        PRINT( std::cerr << "made temp" << i << ": " << newTemp << std::endl; )
     316                                        stmtsToAddBefore.push_back( new DeclStmt( newTemp ) );
     317                                        temp = newTemp;
     318                                }
     319                                // update diff so that remaining code works out correctly
     320                                castExpr->arg = new VariableExpr( temp );
     321                                PRINT( std::cerr << "update cast to: " << castExpr << std::endl; )
     322                                srcType = castExpr->arg->result;
     323                                depth2 = srcType->referenceDepth();
     324                                diff = depth1 - depth2;
     325                                assert( diff == 1 );
     326                        }
     327
     328                        // handle conversion between different depths
     329                        PRINT (
     330                                if ( depth1 || depth2 ) {
     331                                        std::cerr << "destType: " << destType << " / srcType: " << srcType << std::endl;
     332                                        std::cerr << "depth: " << depth1 << " / " << depth2 << std::endl;
     333                                }
     334                        )
     335                        if ( diff > 0 ) {
     336                                // conversion to type with more depth (e.g. int & -> int &&): add address-of for each level of difference
     337                                Expression * ret = castExpr->arg;
     338                                for ( int i = 0; i < diff; ++i ) {
     339                                        ret = new AddressExpr( ret );
     340                                }
     341                                if ( srcType->get_lvalue() && srcType->get_qualifiers() != strict_dynamic_cast<ReferenceType *>( destType )->base->get_qualifiers() ) {
     342                                        // must keep cast if cast-to type is different from the actual type
     343                                        castExpr->arg = ret;
    346344                                        return castExpr;
    347                                 } else if ( castExpr->arg->result->get_lvalue() ) {
    348                                         // conversion from lvalue to reference
    349                                         // xxx - keep cast, but turn into pointer cast??
    350                                         // xxx - memory
    351                                         PRINT(
    352                                                 std::cerr << "convert lvalue to reference -- &" << std::endl;
    353                                                 std::cerr << castExpr->arg << std::endl;
    354                                         )
    355                                         AddressExpr * ret = new AddressExpr( castExpr->arg );
    356                                         if ( refType->base->get_qualifiers() != castExpr->arg->result->get_qualifiers() ) {
    357                                                 // must keep cast if cast-to type is different from the actual type
    358                                                 castExpr->arg = ret;
    359                                                 return castExpr;
    360                                         }
    361                                         ret->env = castExpr->env;
    362                                         delete ret->result;
    363                                         ret->result = castExpr->result;
    364                                         castExpr->env = nullptr;
    365                                         castExpr->arg = nullptr;
    366                                         castExpr->result = nullptr;
    367                                         delete castExpr;
    368                                         return ret;
    369                                 } else {
    370                                         // rvalue to reference conversion -- introduce temporary
    371                                 }
    372                                 assertf( false, "Only conversions to reference from lvalue are currently supported: %s", toString( castExpr ).c_str() );
    373                         } else if ( ReferenceType * refType = dynamic_cast< ReferenceType * >( castExpr->arg->result ) ) {
    374                                 (void)refType;
    375                                 // conversion from reference to rvalue
    376                                 PRINT(
    377                                         std::cerr << "convert reference to rvalue -- *" << std::endl;
    378                                         std::cerr << "was = " << castExpr << std::endl;
    379                                 )
     345                                }
     346                                ret->env = castExpr->env;
     347                                delete ret->result;
     348                                ret->result = castExpr->result;
     349                                castExpr->env = nullptr;
     350                                castExpr->arg = nullptr;
     351                                castExpr->result = nullptr;
     352                                delete castExpr;
     353                                return ret;
     354                        } else if ( diff < 0 ) {
     355                                // conversion to type with less depth (e.g. int && -> int &): add dereferences for each level of difference
     356                                diff = -diff; // care only about magnitude now
    380357                                Expression * ret = castExpr->arg;
    381                                 TypeSubstitution * env = castExpr->env;
    382                                 castExpr->set_env( nullptr );
    383                                 if ( ! isIntrinsicReference( ret ) ) {
    384                                         // dereference if not already dereferenced
     358                                for ( int i = 0; i < diff; ++i ) {
    385359                                        ret = mkDeref( ret );
    386360                                }
    387                                 if ( ResolvExpr::typesCompatibleIgnoreQualifiers( castExpr->result, castExpr->arg->result->stripReferences(), SymTab::Indexer() ) ) {
    388                                         // can remove cast if types are compatible, changing expression type to value type
    389                                         ret->result = castExpr->result->clone();
    390                                         ret->result->set_lvalue( true );  // ensure result is lvalue
    391                                         castExpr->arg = nullptr;
    392                                         delete castExpr;
    393                                 } else {
     361                                if ( ! ResolvExpr::typesCompatibleIgnoreQualifiers( destType->stripReferences(), srcType->stripReferences(), SymTab::Indexer() ) ) {
    394362                                        // must keep cast if types are different
    395363                                        castExpr->arg = ret;
    396                                         ret = castExpr;
    397                                 }
    398                                 ret->set_env( env );
    399                                 PRINT( std::cerr << "now: " << ret << std::endl; )
    400                                 return ret;
    401                         }
    402                         return castExpr;
     364                                        return castExpr;
     365                                }
     366                                ret->env = castExpr->env;
     367                                delete ret->result;
     368                                ret->result = castExpr->result;
     369                                ret->result->set_lvalue( true ); // ensure result is lvalue
     370                                castExpr->env = nullptr;
     371                                castExpr->arg = nullptr;
     372                                castExpr->result = nullptr;
     373                                delete castExpr;
     374                                return ret;
     375                        } else {
     376                                assert( diff == 0 );
     377                                // conversion between references of the same depth
     378                                return castExpr;
     379                        }
    403380                }
    404381
    405382                Type * ReferenceTypeElimination::postmutate( ReferenceType * refType ) {
    406                         Type * base = refType->get_base();
     383                        Type * base = refType->base;
    407384                        Type::Qualifiers qualifiers = refType->get_qualifiers();
    408                         refType->set_base( nullptr );
     385                        refType->base = nullptr;
    409386                        delete refType;
    410387                        return new PointerType( qualifiers, base );
     
    414391                Expression * GeneralizedLvalue::applyTransformation( Expression * expr, Expression * arg, Func mkExpr ) {
    415392                        if ( CommaExpr * commaExpr = dynamic_cast< CommaExpr * >( arg ) ) {
    416                                 Expression * arg1 = commaExpr->get_arg1()->clone();
    417                                 Expression * arg2 = commaExpr->get_arg2()->clone();
     393                                Expression * arg1 = commaExpr->arg1->clone();
     394                                Expression * arg2 = commaExpr->arg2->clone();
    418395                                Expression * ret = new CommaExpr( arg1, mkExpr( arg2 )->acceptMutator( *visitor ) );
    419                                 ret->set_env( expr->get_env() );
    420                                 expr->set_env( nullptr );
     396                                ret->env = expr->env;
     397                                expr->env = nullptr;
    421398                                delete expr;
    422399                                return ret;
    423400                        } else if ( ConditionalExpr * condExpr = dynamic_cast< ConditionalExpr * >( arg ) ) {
    424                                 Expression * arg1 = condExpr->get_arg1()->clone();
    425                                 Expression * arg2 = condExpr->get_arg2()->clone();
    426                                 Expression * arg3 = condExpr->get_arg3()->clone();
     401                                Expression * arg1 = condExpr->arg1->clone();
     402                                Expression * arg2 = condExpr->arg2->clone();
     403                                Expression * arg3 = condExpr->arg3->clone();
    427404                                ConditionalExpr * ret = new ConditionalExpr( arg1, mkExpr( arg2 )->acceptMutator( *visitor ), mkExpr( arg3 )->acceptMutator( *visitor ) );
    428                                 ret->set_env( expr->get_env() );
    429                                 expr->set_env( nullptr );
     405                                ret->env = expr->env;
     406                                expr->env = nullptr;
    430407                                delete expr;
    431408
     
    436413                                AssertionSet needAssertions, haveAssertions;
    437414                                OpenVarSet openVars;
    438                                 unify( ret->get_arg2()->get_result(), ret->get_arg3()->get_result(), newEnv, needAssertions, haveAssertions, openVars, SymTab::Indexer(), commonType );
    439                                 ret->set_result( commonType ? commonType : ret->get_arg2()->get_result()->clone() );
     415                                unify( ret->arg2->result, ret->arg3->result, newEnv, needAssertions, haveAssertions, openVars, SymTab::Indexer(), commonType );
     416                                ret->result = commonType ? commonType : ret->arg2->result->clone();
    440417                                return ret;
    441418                        }
     
    444421
    445422                Expression * GeneralizedLvalue::postmutate( MemberExpr * memExpr ) {
    446                         return applyTransformation( memExpr, memExpr->get_aggregate(), [=]( Expression * aggr ) { return new MemberExpr( memExpr->get_member(), aggr ); } );
     423                        return applyTransformation( memExpr, memExpr->aggregate, [=]( Expression * aggr ) { return new MemberExpr( memExpr->member, aggr ); } );
    447424                }
    448425
    449426                Expression * GeneralizedLvalue::postmutate( AddressExpr * addrExpr ) {
    450                         return applyTransformation( addrExpr, addrExpr->get_arg(), []( Expression * arg ) { return new AddressExpr( arg ); } );
     427                        return applyTransformation( addrExpr, addrExpr->arg, []( Expression * arg ) { return new AddressExpr( arg ); } );
    451428                }
    452429
    453430                Expression * CollapseAddrDeref::postmutate( AddressExpr * addrExpr ) {
    454                         Expression * arg = addrExpr->get_arg();
     431                        Expression * arg = addrExpr->arg;
    455432                        if ( isIntrinsicReference( arg ) ) {
    456433                                std::string fname = InitTweak::getFunctionName( arg );
     
    458435                                        Expression *& arg0 = InitTweak::getCallArg( arg, 0 );
    459436                                        Expression * ret = arg0;
    460                                         ret->set_env( addrExpr->get_env() );
     437                                        ret->set_env( addrExpr->env );
    461438                                        arg0 = nullptr;
    462                                         addrExpr->set_env( nullptr );
     439                                        addrExpr->env = nullptr;
    463440                                        delete addrExpr;
    464441                                        return ret;
     
    487464                                        // }
    488465                                        if ( AddressExpr * addrExpr = dynamic_cast< AddressExpr * >( arg ) ) {
    489                                                 Expression * ret = addrExpr->get_arg();
    490                                                 ret->set_env( appExpr->get_env() );
    491                                                 addrExpr->set_arg( nullptr );
    492                                                 appExpr->set_env( nullptr );
     466                                                Expression * ret = addrExpr->arg;
     467                                                ret->env = appExpr->env;
     468                                                addrExpr->arg = nullptr;
     469                                                appExpr->env = nullptr;
    493470                                                delete appExpr;
    494471                                                return ret;
  • src/Makefile.in

    rb2fe1c9 r32cab5b  
    249249        SynTree/driver_cfa_cpp-TypeSubstitution.$(OBJEXT) \
    250250        SynTree/driver_cfa_cpp-Attribute.$(OBJEXT) \
    251         SynTree/driver_cfa_cpp-VarExprReplacer.$(OBJEXT) \
     251        SynTree/driver_cfa_cpp-DeclReplacer.$(OBJEXT) \
    252252        Tuples/driver_cfa_cpp-TupleAssignment.$(OBJEXT) \
    253253        Tuples/driver_cfa_cpp-TupleExpansion.$(OBJEXT) \
     
    526526        SynTree/NamedTypeDecl.cc SynTree/TypeDecl.cc \
    527527        SynTree/Initializer.cc SynTree/TypeSubstitution.cc \
    528         SynTree/Attribute.cc SynTree/VarExprReplacer.cc \
     528        SynTree/Attribute.cc SynTree/DeclReplacer.cc \
    529529        Tuples/TupleAssignment.cc Tuples/TupleExpansion.cc \
    530530        Tuples/Explode.cc Virtual/ExpandCasts.cc
     
    912912SynTree/driver_cfa_cpp-Attribute.$(OBJEXT): SynTree/$(am__dirstamp) \
    913913        SynTree/$(DEPDIR)/$(am__dirstamp)
    914 SynTree/driver_cfa_cpp-VarExprReplacer.$(OBJEXT):  \
     914SynTree/driver_cfa_cpp-DeclReplacer.$(OBJEXT):  \
    915915        SynTree/$(am__dirstamp) SynTree/$(DEPDIR)/$(am__dirstamp)
    916916Tuples/$(am__dirstamp):
     
    10391039@AMDEP_TRUE@@am__include@ @am__quote@SynTree/$(DEPDIR)/driver_cfa_cpp-CompoundStmt.Po@am__quote@
    10401040@AMDEP_TRUE@@am__include@ @am__quote@SynTree/$(DEPDIR)/driver_cfa_cpp-Constant.Po@am__quote@
     1041@AMDEP_TRUE@@am__include@ @am__quote@SynTree/$(DEPDIR)/driver_cfa_cpp-DeclReplacer.Po@am__quote@
    10411042@AMDEP_TRUE@@am__include@ @am__quote@SynTree/$(DEPDIR)/driver_cfa_cpp-DeclStmt.Po@am__quote@
    10421043@AMDEP_TRUE@@am__include@ @am__quote@SynTree/$(DEPDIR)/driver_cfa_cpp-Declaration.Po@am__quote@
     
    10601061@AMDEP_TRUE@@am__include@ @am__quote@SynTree/$(DEPDIR)/driver_cfa_cpp-TypeofType.Po@am__quote@
    10611062@AMDEP_TRUE@@am__include@ @am__quote@SynTree/$(DEPDIR)/driver_cfa_cpp-VarArgsType.Po@am__quote@
    1062 @AMDEP_TRUE@@am__include@ @am__quote@SynTree/$(DEPDIR)/driver_cfa_cpp-VarExprReplacer.Po@am__quote@
    10631063@AMDEP_TRUE@@am__include@ @am__quote@SynTree/$(DEPDIR)/driver_cfa_cpp-VoidType.Po@am__quote@
    10641064@AMDEP_TRUE@@am__include@ @am__quote@SynTree/$(DEPDIR)/driver_cfa_cpp-ZeroOneType.Po@am__quote@
     
    24982498@am__fastdepCXX_FALSE@  $(AM_V_CXX@am__nodep@)$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(driver_cfa_cpp_CXXFLAGS) $(CXXFLAGS) -c -o SynTree/driver_cfa_cpp-Attribute.obj `if test -f 'SynTree/Attribute.cc'; then $(CYGPATH_W) 'SynTree/Attribute.cc'; else $(CYGPATH_W) '$(srcdir)/SynTree/Attribute.cc'; fi`
    24992499
    2500 SynTree/driver_cfa_cpp-VarExprReplacer.o: SynTree/VarExprReplacer.cc
    2501 @am__fastdepCXX_TRUE@   $(AM_V_CXX)$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(driver_cfa_cpp_CXXFLAGS) $(CXXFLAGS) -MT SynTree/driver_cfa_cpp-VarExprReplacer.o -MD -MP -MF SynTree/$(DEPDIR)/driver_cfa_cpp-VarExprReplacer.Tpo -c -o SynTree/driver_cfa_cpp-VarExprReplacer.o `test -f 'SynTree/VarExprReplacer.cc' || echo '$(srcdir)/'`SynTree/VarExprReplacer.cc
    2502 @am__fastdepCXX_TRUE@   $(AM_V_at)$(am__mv) SynTree/$(DEPDIR)/driver_cfa_cpp-VarExprReplacer.Tpo SynTree/$(DEPDIR)/driver_cfa_cpp-VarExprReplacer.Po
    2503 @AMDEP_TRUE@@am__fastdepCXX_FALSE@      $(AM_V_CXX)source='SynTree/VarExprReplacer.cc' object='SynTree/driver_cfa_cpp-VarExprReplacer.o' libtool=no @AMDEPBACKSLASH@
    2504 @AMDEP_TRUE@@am__fastdepCXX_FALSE@      DEPDIR=$(DEPDIR) $(CXXDEPMODE) $(depcomp) @AMDEPBACKSLASH@
    2505 @am__fastdepCXX_FALSE@  $(AM_V_CXX@am__nodep@)$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(driver_cfa_cpp_CXXFLAGS) $(CXXFLAGS) -c -o SynTree/driver_cfa_cpp-VarExprReplacer.o `test -f 'SynTree/VarExprReplacer.cc' || echo '$(srcdir)/'`SynTree/VarExprReplacer.cc
    2506 
    2507 SynTree/driver_cfa_cpp-VarExprReplacer.obj: SynTree/VarExprReplacer.cc
    2508 @am__fastdepCXX_TRUE@   $(AM_V_CXX)$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(driver_cfa_cpp_CXXFLAGS) $(CXXFLAGS) -MT SynTree/driver_cfa_cpp-VarExprReplacer.obj -MD -MP -MF SynTree/$(DEPDIR)/driver_cfa_cpp-VarExprReplacer.Tpo -c -o SynTree/driver_cfa_cpp-VarExprReplacer.obj `if test -f 'SynTree/VarExprReplacer.cc'; then $(CYGPATH_W) 'SynTree/VarExprReplacer.cc'; else $(CYGPATH_W) '$(srcdir)/SynTree/VarExprReplacer.cc'; fi`
    2509 @am__fastdepCXX_TRUE@   $(AM_V_at)$(am__mv) SynTree/$(DEPDIR)/driver_cfa_cpp-VarExprReplacer.Tpo SynTree/$(DEPDIR)/driver_cfa_cpp-VarExprReplacer.Po
    2510 @AMDEP_TRUE@@am__fastdepCXX_FALSE@      $(AM_V_CXX)source='SynTree/VarExprReplacer.cc' object='SynTree/driver_cfa_cpp-VarExprReplacer.obj' libtool=no @AMDEPBACKSLASH@
    2511 @AMDEP_TRUE@@am__fastdepCXX_FALSE@      DEPDIR=$(DEPDIR) $(CXXDEPMODE) $(depcomp) @AMDEPBACKSLASH@
    2512 @am__fastdepCXX_FALSE@  $(AM_V_CXX@am__nodep@)$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(driver_cfa_cpp_CXXFLAGS) $(CXXFLAGS) -c -o SynTree/driver_cfa_cpp-VarExprReplacer.obj `if test -f 'SynTree/VarExprReplacer.cc'; then $(CYGPATH_W) 'SynTree/VarExprReplacer.cc'; else $(CYGPATH_W) '$(srcdir)/SynTree/VarExprReplacer.cc'; fi`
     2500SynTree/driver_cfa_cpp-DeclReplacer.o: SynTree/DeclReplacer.cc
     2501@am__fastdepCXX_TRUE@   $(AM_V_CXX)$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(driver_cfa_cpp_CXXFLAGS) $(CXXFLAGS) -MT SynTree/driver_cfa_cpp-DeclReplacer.o -MD -MP -MF SynTree/$(DEPDIR)/driver_cfa_cpp-DeclReplacer.Tpo -c -o SynTree/driver_cfa_cpp-DeclReplacer.o `test -f 'SynTree/DeclReplacer.cc' || echo '$(srcdir)/'`SynTree/DeclReplacer.cc
     2502@am__fastdepCXX_TRUE@   $(AM_V_at)$(am__mv) SynTree/$(DEPDIR)/driver_cfa_cpp-DeclReplacer.Tpo SynTree/$(DEPDIR)/driver_cfa_cpp-DeclReplacer.Po
     2503@AMDEP_TRUE@@am__fastdepCXX_FALSE@      $(AM_V_CXX)source='SynTree/DeclReplacer.cc' object='SynTree/driver_cfa_cpp-DeclReplacer.o' libtool=no @AMDEPBACKSLASH@
     2504@AMDEP_TRUE@@am__fastdepCXX_FALSE@      DEPDIR=$(DEPDIR) $(CXXDEPMODE) $(depcomp) @AMDEPBACKSLASH@
     2505@am__fastdepCXX_FALSE@  $(AM_V_CXX@am__nodep@)$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(driver_cfa_cpp_CXXFLAGS) $(CXXFLAGS) -c -o SynTree/driver_cfa_cpp-DeclReplacer.o `test -f 'SynTree/DeclReplacer.cc' || echo '$(srcdir)/'`SynTree/DeclReplacer.cc
     2506
     2507SynTree/driver_cfa_cpp-DeclReplacer.obj: SynTree/DeclReplacer.cc
     2508@am__fastdepCXX_TRUE@   $(AM_V_CXX)$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(driver_cfa_cpp_CXXFLAGS) $(CXXFLAGS) -MT SynTree/driver_cfa_cpp-DeclReplacer.obj -MD -MP -MF SynTree/$(DEPDIR)/driver_cfa_cpp-DeclReplacer.Tpo -c -o SynTree/driver_cfa_cpp-DeclReplacer.obj `if test -f 'SynTree/DeclReplacer.cc'; then $(CYGPATH_W) 'SynTree/DeclReplacer.cc'; else $(CYGPATH_W) '$(srcdir)/SynTree/DeclReplacer.cc'; fi`
     2509@am__fastdepCXX_TRUE@   $(AM_V_at)$(am__mv) SynTree/$(DEPDIR)/driver_cfa_cpp-DeclReplacer.Tpo SynTree/$(DEPDIR)/driver_cfa_cpp-DeclReplacer.Po
     2510@AMDEP_TRUE@@am__fastdepCXX_FALSE@      $(AM_V_CXX)source='SynTree/DeclReplacer.cc' object='SynTree/driver_cfa_cpp-DeclReplacer.obj' libtool=no @AMDEPBACKSLASH@
     2511@AMDEP_TRUE@@am__fastdepCXX_FALSE@      DEPDIR=$(DEPDIR) $(CXXDEPMODE) $(depcomp) @AMDEPBACKSLASH@
     2512@am__fastdepCXX_FALSE@  $(AM_V_CXX@am__nodep@)$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(driver_cfa_cpp_CXXFLAGS) $(CXXFLAGS) -c -o SynTree/driver_cfa_cpp-DeclReplacer.obj `if test -f 'SynTree/DeclReplacer.cc'; then $(CYGPATH_W) 'SynTree/DeclReplacer.cc'; else $(CYGPATH_W) '$(srcdir)/SynTree/DeclReplacer.cc'; fi`
    25132513
    25142514Tuples/driver_cfa_cpp-TupleAssignment.o: Tuples/TupleAssignment.cc
  • src/Parser/DeclarationNode.cc

    rb2fe1c9 r32cab5b  
    7171        attr.expr = nullptr;
    7272        attr.type = nullptr;
     73
     74        assert.condition = nullptr;
     75        assert.message = nullptr;
    7376}
    7477
     
    8891        // asmName, no delete, passed to next stage
    8992        delete initializer;
     93
     94        delete assert.condition;
     95        delete assert.message;
    9096}
    9197
     
    117123        newnode->attr.expr = maybeClone( attr.expr );
    118124        newnode->attr.type = maybeClone( attr.type );
     125
     126        newnode->assert.condition = maybeClone( assert.condition );
     127        newnode->assert.message = maybeClone( assert.message );
    119128        return newnode;
    120129} // DeclarationNode::clone
     
    434443        return newnode;
    435444}
     445
     446DeclarationNode * DeclarationNode::newStaticAssert( ExpressionNode * condition, Expression * message ) {
     447        DeclarationNode * newnode = new DeclarationNode;
     448        newnode->assert.condition = condition;
     449        newnode->assert.message = message;
     450        return newnode;
     451}
     452
    436453
    437454void appendError( string & dst, const string & src ) {
     
    10521069        } // if
    10531070
     1071        if ( assert.condition ) {
     1072                return new StaticAssertDecl( maybeBuild< Expression >( assert.condition ), strict_dynamic_cast< ConstantExpr * >( maybeClone( assert.message ) ) );
     1073        }
     1074
    10541075        // SUE's cannot have function specifiers, either
    10551076        //
  • src/Parser/ExpressionNode.cc

    rb2fe1c9 r32cab5b  
    1010// Created On       : Sat May 16 13:17:07 2015
    1111// Last Modified By : Peter A. Buhr
    12 // Last Modified On : Sat Mar  3 18:22:33 2018
    13 // Update Count     : 796
     12// Last Modified On : Thu Mar 22 11:57:39 2018
     13// Update Count     : 801
    1414//
    1515
     
    9494} // checkLNInt
    9595
    96 static void sepNumeric( string & str, string & units ) {
    97         string::size_type posn = str.find_first_of( "`" );
    98         if ( posn != string::npos ) {
    99                 units = "?" + str.substr( posn );                               // extract units
    100                 str.erase( posn );                                                              // remove units
    101         } // if
    102 } // sepNumeric
    103 
    10496Expression * build_constantInteger( string & str ) {
    10597        static const BasicType::Kind kind[2][6] = {
     
    108100                { BasicType::ShortUnsignedInt, BasicType::UnsignedChar, BasicType::UnsignedInt, BasicType::LongUnsignedInt, BasicType::LongLongUnsignedInt, BasicType::UnsignedInt128, },
    109101        };
    110 
    111         string units;
    112         sepNumeric( str, units );                                                       // separate constant from units
    113102
    114103        bool dec = true, Unsigned = false;                                      // decimal, unsigned constant
     
    232221        } // if
    233222  CLEANUP:
    234         if ( units.length() != 0 ) {
    235                 ret = new UntypedExpr( new NameExpr( units ), { ret } );
    236         } // if
    237223
    238224        delete &str;                                                                            // created by lex
     
    268254        };
    269255
    270         string units;
    271         sepNumeric( str, units );                                                       // separate constant from units
    272 
    273256        bool complx = false;                                                            // real, complex
    274257        int size = 1;                                                                           // 0 => float, 1 => double, 2 => long double
     
    303286        if ( lnth != -1 ) {                                                                     // explicit length ?
    304287                ret = new CastExpr( ret, new BasicType( Type::Qualifiers(), kind[complx][size] ) );
    305         } // if
    306         if ( units.length() != 0 ) {
    307                 ret = new UntypedExpr( new NameExpr( units ), { ret } );
    308288        } // if
    309289
  • src/Parser/ParseNode.h

    rb2fe1c9 r32cab5b  
    246246        static DeclarationNode * newAttribute( std::string *, ExpressionNode * expr = nullptr ); // gcc attributes
    247247        static DeclarationNode * newAsmStmt( StatementNode * stmt ); // gcc external asm statement
     248        static DeclarationNode * newStaticAssert( ExpressionNode * condition, Expression * message );
    248249
    249250        DeclarationNode();
     
    313314        Attr_t attr;
    314315
     316        struct StaticAssert_t {
     317                ExpressionNode * condition;
     318                Expression * message;
     319        };
     320        StaticAssert_t assert;
     321
    315322        BuiltinType builtin;
    316323
     
    392399
    393400Statement * build_if( IfCtl * ctl, StatementNode * then_stmt, StatementNode * else_stmt );
    394 Statement * build_switch( ExpressionNode * ctl, StatementNode * stmt );
     401Statement * build_switch( bool isSwitch, ExpressionNode * ctl, StatementNode * stmt );
    395402Statement * build_case( ExpressionNode * ctl );
    396403Statement * build_default();
  • src/Parser/StatementNode.cc

    rb2fe1c9 r32cab5b  
    1010// Created On       : Sat May 16 14:59:41 2015
    1111// Last Modified By : Peter A. Buhr
    12 // Last Modified On : Fri Sep  1 23:25:23 2017
    13 // Update Count     : 346
     12// Last Modified On : Thu Mar  8 14:31:32 2018
     13// Update Count     : 348
    1414//
    1515
     
    116116}
    117117
    118 Statement *build_switch( ExpressionNode *ctl, StatementNode *stmt ) {
     118Statement *build_switch( bool isSwitch, ExpressionNode *ctl, StatementNode *stmt ) {
    119119        std::list< Statement * > branches;
    120120        buildMoveList< Statement, StatementNode >( stmt, branches );
     121        if ( ! isSwitch ) {                                                                             // choose statement
     122                for ( Statement * stmt : branches ) {
     123                        CaseStmt * caseStmt = strict_dynamic_cast< CaseStmt * >( stmt );
     124                        if ( ! caseStmt->stmts.empty() ) {                      // code after "case" => end of case list
     125                                CompoundStmt * block = strict_dynamic_cast< CompoundStmt * >( caseStmt->stmts.front() );
     126                                block->kids.push_back( new BranchStmt( "", BranchStmt::Break ) );
     127                        } // if
     128                } // for
     129        } // if
    121130        // branches.size() == 0 for switch (...) {}, i.e., no declaration or statements
    122131        return new SwitchStmt( maybeMoveBuild< Expression >(ctl), branches );
  • src/Parser/lex.ll

    rb2fe1c9 r32cab5b  
    1010 * Created On       : Sat Sep 22 08:58:10 2001
    1111 * Last Modified By : Peter A. Buhr
    12  * Last Modified On : Sat Mar  3 18:38:16 2018
    13  * Update Count     : 640
     12 * Last Modified On : Fri Apr  6 15:16:15 2018
     13 * Update Count     : 670
    1414 */
    1515
     
    5454
    5555void rm_underscore() {
    56         // Remove underscores in numeric constant by copying the non-underscore characters to the front of the string.
     56        // SKULLDUGGERY: remove underscores (ok to shorten?)
    5757        yyleng = 0;
    58         for ( int i = 0; yytext[i] != '\0'; i += 1 ) {
    59                 if ( yytext[i] == '`' ) {
    60                         // copy user suffix
    61                         for ( ; yytext[i] != '\0'; i += 1 ) {
    62                                 yytext[yyleng] = yytext[i];
    63                                 yyleng += 1;
    64                         } // for
    65                         break;
    66                 } // if
     58        for ( int i = 0; yytext[i] != '\0'; i += 1 ) {          // copying non-underscore characters to front of string
    6759                if ( yytext[i] != '_' ) {
    6860                        yytext[yyleng] = yytext[i];
     
    7163        } // for
    7264        yytext[yyleng] = '\0';
    73 }
     65} // rm_underscore
    7466
    7567// Stop warning due to incorrectly generated flex code.
     
    9082attr_identifier "@"{identifier}
    9183
    92 user_suffix_opt ("`"{identifier})?
    93 
    9484                                // numeric constants, CFA: '_' in constant
    9585hex_quad {hex}("_"?{hex}){3}
    9686size_opt (8|16|32|64|128)?
    9787length ("ll"|"LL"|[lL]{size_opt})|("hh"|"HH"|[hH])
    98 integer_suffix_opt ("_"?(([uU]({length}?[iI]?)|([iI]{length}))|([iI]({length}?[uU]?)|([uU]{length}))|({length}([iI]?[uU]?)|([uU][iI]))|[zZ]))?{user_suffix_opt}
     88integer_suffix_opt ("_"?(([uU]({length}?[iI]?)|([iI]{length}))|([iI]({length}?[uU]?)|([uU]{length}))|({length}([iI]?[uU]?)|([uU][iI]))|[zZ]))?
    9989
    10090octal_digits ({octal})|({octal}({octal}|"_")*{octal})
     
    118108floating_length ([fFdDlL]|[lL]{floating_size})
    119109floating_suffix ({floating_length}?[iI]?)|([iI]{floating_length})
    120 floating_suffix_opt ("_"?({floating_suffix}|"DL"))?{user_suffix_opt}
     110floating_suffix_opt ("_"?({floating_suffix}|"DL"))?
    121111decimal_digits ({decimal})|({decimal}({decimal}|"_")*{decimal})
    122112floating_decimal {decimal_digits}"."{exponent}?{floating_suffix_opt}
     
    125115
    126116binary_exponent "_"?[pP]"_"?[+-]?{decimal_digits}
    127 hex_floating_suffix_opt ("_"?({floating_suffix}))?{user_suffix_opt}
     117hex_floating_suffix_opt ("_"?({floating_suffix}))?
    128118hex_floating_fraction ({hex_digits}?"."{hex_digits})|({hex_digits}".")
    129119hex_floating_constant {hex_prefix}(({hex_floating_fraction}{binary_exponent})|({hex_digits}{binary_exponent})){hex_floating_suffix_opt}
     
    208198__asm                   { KEYWORD_RETURN(ASM); }                                // GCC
    209199__asm__                 { KEYWORD_RETURN(ASM); }                                // GCC
    210 _At                             { KEYWORD_RETURN(AT); }                                 // CFA
    211200_Atomic                 { KEYWORD_RETURN(ATOMIC); }                             // C11
    212201__attribute             { KEYWORD_RETURN(ATTRIBUTE); }                  // GCC
     
    239228exception               { KEYWORD_RETURN(EXCEPTION); }                  // CFA
    240229extern                  { KEYWORD_RETURN(EXTERN); }
     230fallthrough             { KEYWORD_RETURN(FALLTHROUGH); }                // CFA
    241231fallthru                { KEYWORD_RETURN(FALLTHRU); }                   // CFA
    242 fallthrough             { KEYWORD_RETURN(FALLTHROUGH); }                // CFA
    243232finally                 { KEYWORD_RETURN(FINALLY); }                    // CFA
    244233float                   { KEYWORD_RETURN(FLOAT); }
     
    270259__builtin_offsetof { KEYWORD_RETURN(OFFSETOF); }                // GCC
    271260one_t                   { NUMERIC_RETURN(ONE_T); }                              // CFA
     261or                              { QKEYWORD_RETURN(WOR); }                               // CFA
    272262otype                   { KEYWORD_RETURN(OTYPE); }                              // CFA
    273263register                { KEYWORD_RETURN(REGISTER); }
     
    306296__volatile__    { KEYWORD_RETURN(VOLATILE); }                   // GCC
    307297waitfor                 { KEYWORD_RETURN(WAITFOR); }
    308 or                              { QKEYWORD_RETURN(WOR); }                               // CFA
    309298when                    { KEYWORD_RETURN(WHEN); }
    310299while                   { KEYWORD_RETURN(WHILE); }
     
    314303                                /* identifier */
    315304{identifier}    { IDENTIFIER_RETURN(); }
     305"`"{identifier}"`" {                                                                    // CFA
     306        yytext[yyleng - 1] = '\0'; yytext += 1;                         // SKULLDUGGERY: remove backquotes (ok to shorten?)
     307        IDENTIFIER_RETURN();
     308}
    316309{attr_identifier} { ATTRIBUTE_RETURN(); }
    317 "`"                             { BEGIN BKQUOTE; }
    318 <BKQUOTE>{identifier} { IDENTIFIER_RETURN(); }
    319 <BKQUOTE>"`"    { BEGIN 0; }
    320310
    321311                                /* numeric constants */
     
    332322({cwide_prefix}[_]?)?['] { BEGIN QUOTE; rm_underscore(); strtext = new string( yytext, yyleng ); }
    333323<QUOTE>[^'\\\n]* { strtext->append( yytext, yyleng ); }
    334 <QUOTE>['\n]{user_suffix_opt}   { BEGIN 0; strtext->append( yytext, yyleng ); RETURN_STR(CHARACTERconstant); }
     324<QUOTE>['\n]    { BEGIN 0; strtext->append( yytext, yyleng ); RETURN_STR(CHARACTERconstant); }
    335325                                /* ' stop editor highlighting */
    336326
     
    338328({swide_prefix}[_]?)?["] { BEGIN STRING; rm_underscore(); strtext = new string( yytext, yyleng ); }
    339329<STRING>[^"\\\n]* { strtext->append( yytext, yyleng ); }
    340 <STRING>["\n]{user_suffix_opt}  { BEGIN 0; strtext->append( yytext, yyleng ); RETURN_STR(STRINGliteral); }
     330<STRING>["\n]   { BEGIN 0; strtext->append( yytext, yyleng ); RETURN_STR(STRINGliteral); }
    341331                                /* " stop editor highlighting */
    342332
     
    348338                                /* punctuation */
    349339"@"                             { ASCIIOP_RETURN(); }
     340"`"                             { ASCIIOP_RETURN(); }
    350341"["                             { ASCIIOP_RETURN(); }
    351342"]"                             { ASCIIOP_RETURN(); }
     
    412403"?"({op_unary_pre_post}|"()"|"[?]"|"{}") { IDENTIFIER_RETURN(); }
    413404"^?{}"                  { IDENTIFIER_RETURN(); }
    414 "?`"{identifier} { IDENTIFIER_RETURN(); }                               // unit operator
     405"?`"{identifier} { IDENTIFIER_RETURN(); }                               // postfix operator
    415406"?"{op_binary_over}"?"  { IDENTIFIER_RETURN(); }                // binary
    416407        /*
  • src/Parser/parser.yy

    rb2fe1c9 r32cab5b  
    1010// Created On       : Sat Sep  1 20:22:55 2001
    1111// Last Modified By : Peter A. Buhr
    12 // Last Modified On : Thu Feb 22 17:48:54 2018
    13 // Update Count     : 3028
     12// Last Modified On : Wed Mar 28 17:52:24 2018
     13// Update Count     : 3130
    1414//
    1515
     
    126126        } // if
    127127} // rebindForall
     128
     129NameExpr * build_postfix_name( const string * name ) {
     130        NameExpr * new_name = build_varref( new string( "?`" + *name ) );
     131        delete name;
     132        return new_name;
     133} // build_postfix_name
    128134
    129135bool forall = false;                                                                    // aggregate have one or more forall qualifiers ?
     
    254260%type<sn> statement_decl                                statement_decl_list                     statement_list_nodecl
    255261%type<sn> selection_statement
    256 %type<sn> switch_clause_list_opt                switch_clause_list                      choose_clause_list_opt          choose_clause_list
     262%type<sn> switch_clause_list_opt                switch_clause_list
    257263%type<en> case_value
    258264%type<sn> case_clause                                   case_value_list                         case_label                                      case_label_list
    259 %type<sn> fall_through                                  fall_through_opt
    260265%type<sn> iteration_statement                   jump_statement
    261266%type<sn> expression_statement                  asm_statement
     
    481486        | '(' compound_statement ')'                                            // GCC, lambda expression
    482487                { $$ = new ExpressionNode( new StmtExpr( dynamic_cast< CompoundStmt * >(maybeMoveBuild< Statement >($2) ) ) ); }
     488        | constant '`' IDENTIFIER                                                       // CFA, postfix call
     489                { $$ = new ExpressionNode( build_func( new ExpressionNode( build_postfix_name( $3 ) ), $1 ) ); }
     490        | string_literal '`' IDENTIFIER                                         // CFA, postfix call
     491                { $$ = new ExpressionNode( build_func( new ExpressionNode( build_postfix_name( $3 ) ), new ExpressionNode( $1 ) ) ); }
     492        | IDENTIFIER '`' IDENTIFIER                                                     // CFA, postfix call
     493                { $$ = new ExpressionNode( build_func( new ExpressionNode( build_postfix_name( $3 ) ), new ExpressionNode( build_varref( $1 ) ) ) ); }
     494        | tuple '`' IDENTIFIER                                                          // CFA, postfix call
     495                { $$ = new ExpressionNode( build_func( new ExpressionNode( build_postfix_name( $3 ) ), $1 ) ); }
     496        | '(' comma_expression ')' '`' IDENTIFIER                       // CFA, postfix call
     497                { $$ = new ExpressionNode( build_func( new ExpressionNode( build_postfix_name( $5 ) ), $2 ) ); }
    483498        | type_name '.' no_attr_identifier                                      // CFA, nested type
    484                 { SemanticError( yylloc, "Qualified names are currently unimplemented." ); $$ = nullptr; } // FIX ME
     499                { SemanticError( yylloc, "Qualified names are currently unimplemented." ); $$ = nullptr; }
    485500        | type_name '.' '[' push field_list pop ']'                     // CFA, nested type / tuple field selector
    486                 { SemanticError( yylloc, "Qualified names are currently unimplemented." ); $$ = nullptr; } // FIX ME
     501                { SemanticError( yylloc, "Qualified names are currently unimplemented." ); $$ = nullptr; }
    487502        | GENERIC '(' assignment_expression ',' generic_assoc_list ')' // C11
    488                 { SemanticError( yylloc, "_Generic is currently unimplemented." ); $$ = nullptr; } // FIX ME
     503                { SemanticError( yylloc, "_Generic is currently unimplemented." ); $$ = nullptr; }
    489504        ;
    490505
     
    535550        | '(' type_no_function ')' '{' initializer_list comma_opt '}' // C99, compound-literal
    536551                { $$ = new ExpressionNode( build_compoundLiteral( $2, new InitializerNode( $5, true ) ) ); }
     552        | '(' type_no_function ')' '@' '{' initializer_list comma_opt '}' // CFA, explicit C compound-literal
     553                { $$ = new ExpressionNode( build_compoundLiteral( $2, (new InitializerNode( $6, true ))->set_maybeConstructed( false ) ) ); }
    537554        | '^' primary_expression '{' argument_expression_list '}' // CFA
    538555                {
     
    670687        | '(' type_no_function ')' cast_expression
    671688                { $$ = new ExpressionNode( build_cast( $2, $4 ) ); }
     689        | '(' COROUTINE '&' ')' cast_expression                         // CFA
     690                { SemanticError( yylloc, "coroutine cast is currently unimplemented." ); $$ = nullptr; }
     691        | '(' THREAD '&' ')' cast_expression                            // CFA
     692                { SemanticError( yylloc, "monitor cast is currently unimplemented." ); $$ = nullptr; }
     693        | '(' MONITOR '&' ')' cast_expression                           // CFA
     694                { SemanticError( yylloc, "thread cast is currently unimplemented." ); $$ = nullptr; }
    672695                // VIRTUAL cannot be opt because of look ahead issues
    673         | '(' VIRTUAL ')' cast_expression
     696        | '(' VIRTUAL ')' cast_expression                                       // CFA
    674697                { $$ = new ExpressionNode( new VirtualCastExpr( maybeMoveBuild< Expression >( $4 ), maybeMoveBuildType( nullptr ) ) ); }
    675         | '(' VIRTUAL type_no_function ')' cast_expression
     698        | '(' VIRTUAL type_no_function ')' cast_expression      // CFA
    676699                { $$ = new ExpressionNode( new VirtualCastExpr( maybeMoveBuild< Expression >( $5 ), maybeMoveBuildType( $3 ) ) ); }
    677700//      | '(' type_no_function ')' tuple
     
    765788        | logical_OR_expression '?' comma_expression ':' conditional_expression
    766789                { $$ = new ExpressionNode( build_cond( $1, $3, $5 ) ); }
    767                 // FIX ME: this hack computes $1 twice
     790                // FIX ME: computes $1 twice
    768791        | logical_OR_expression '?' /* empty */ ':' conditional_expression // GCC, omitted first operand
    769792                { $$ = new ExpressionNode( build_cond( $1, $1, $4 ) ); }
     
    780803                { $$ = new ExpressionNode( build_binary_val( $2, $1, $3 ) ); }
    781804        | unary_expression '=' '{' initializer_list comma_opt '}'
    782                 { SemanticError( yylloc, "Initializer assignment is currently unimplemented." ); $$ = nullptr; } // FIX ME
     805                { SemanticError( yylloc, "Initializer assignment is currently unimplemented." ); $$ = nullptr; }
    783806        ;
    784807
     
    850873        | exception_statement
    851874        | enable_disable_statement
    852                 { SemanticError( yylloc, "enable/disable statement is currently unimplemented." ); $$ = nullptr; } // FIX ME
     875                { SemanticError( yylloc, "enable/disable statement is currently unimplemented." ); $$ = nullptr; }
    853876        | asm_statement
    854877        ;
     
    917940                { $$ = new StatementNode( build_if( $4, $6, $8 ) ); }
    918941        | SWITCH '(' comma_expression ')' case_clause
    919                 { $$ = new StatementNode( build_switch( $3, $5 ) ); }
     942                { $$ = new StatementNode( build_switch( true, $3, $5 ) ); }
    920943        | SWITCH '(' comma_expression ')' '{' push declaration_list_opt switch_clause_list_opt '}' // CFA
    921944                {
    922                         StatementNode *sw = new StatementNode( build_switch( $3, $8 ) );
     945                        StatementNode *sw = new StatementNode( build_switch( true, $3, $8 ) );
    923946                        // The semantics of the declaration list is changed to include associated initialization, which is performed
    924947                        // *before* the transfer to the appropriate case clause by hoisting the declarations into a compound
     
    929952                }
    930953        | CHOOSE '(' comma_expression ')' case_clause           // CFA
    931                 { $$ = new StatementNode( build_switch( $3, $5 ) ); }
    932         | CHOOSE '(' comma_expression ')' '{' push declaration_list_opt choose_clause_list_opt '}' // CFA
    933                 {
    934                         StatementNode *sw = new StatementNode( build_switch( $3, $8 ) );
     954                { $$ = new StatementNode( build_switch( false, $3, $5 ) ); }
     955        | CHOOSE '(' comma_expression ')' '{' push declaration_list_opt switch_clause_list_opt '}' // CFA
     956                {
     957                        StatementNode *sw = new StatementNode( build_switch( false, $3, $8 ) );
    935958                        $$ = $7 ? new StatementNode( build_compound( (StatementNode *)((new StatementNode( $7 ))->set_last( sw )) ) ) : sw;
    936959                }
     
    970993        ;
    971994
     995//label_list_opt:
     996//      // empty
     997//      | identifier_or_type_name ':'
     998//      | label_list_opt identifier_or_type_name ':'
     999//      ;
     1000
    9721001case_label_list:                                                                                // CFA
    9731002        case_label
     
    9901019        | switch_clause_list case_label_list statement_list_nodecl
    9911020                { $$ = (StatementNode *)( $1->set_last( $2->append_last_case( new StatementNode( build_compound( $3 ) ) ) ) ); }
    992         ;
    993 
    994 choose_clause_list_opt:                                                                 // CFA
    995         // empty
    996                 { $$ = nullptr; }
    997         | choose_clause_list
    998         ;
    999 
    1000 choose_clause_list:                                                                             // CFA
    1001         case_label_list fall_through
    1002                 { $$ = $1->append_last_case( $2 ); }
    1003         | case_label_list statement_list_nodecl fall_through_opt
    1004                 { $$ = $1->append_last_case( new StatementNode( build_compound( (StatementNode *)$2->set_last( $3 ) ) ) ); }
    1005         | choose_clause_list case_label_list fall_through
    1006                 { $$ = (StatementNode *)( $1->set_last( $2->append_last_case( $3 ))); }
    1007         | choose_clause_list case_label_list statement_list_nodecl fall_through_opt
    1008                 { $$ = (StatementNode *)( $1->set_last( $2->append_last_case( new StatementNode( build_compound( (StatementNode *)$3->set_last( $4 ) ) ) ) ) ); }
    1009         ;
    1010 
    1011 fall_through_opt:                                                                               // CFA
    1012         // empty
    1013                 { $$ = new StatementNode( build_branch( BranchStmt::Break ) ); } // insert implicit break
    1014         | fall_through
    1015         ;
    1016 
    1017 fall_through_name:                                                                              // CFA
    1018         FALLTHRU
    1019         | FALLTHROUGH
    1020         ;
    1021 
    1022 fall_through:                                                                                   // CFA
    1023         fall_through_name
    1024                 { $$ = nullptr; }
    1025         | fall_through_name ';'
    1026                 { $$ = nullptr; }
    10271021        ;
    10281022
     
    10501044                // whereas normal operator precedence yields goto (*i)+3;
    10511045                { $$ = new StatementNode( build_computedgoto( $3 ) ); }
     1046                // A semantic check is required to ensure fallthru appears only in the body of a choose statement.
     1047    | fall_through_name ';'                                                             // CFA
     1048                { $$ = new StatementNode( build_branch( BranchStmt::FallThrough ) ); }
     1049    | fall_through_name identifier_or_type_name ';'             // CFA
     1050                { $$ = new StatementNode( build_branch( $2, BranchStmt::FallThrough ) ); }
     1051        | fall_through_name DEFAULT ';'                                         // CFA
     1052                { $$ = new StatementNode( build_branch( BranchStmt::FallThroughDefault ) ); }
    10521053        | CONTINUE ';'
    10531054                // A semantic check is required to ensure this statement appears only in the body of an iteration statement.
     
    10671068                { $$ = new StatementNode( build_return( $2 ) ); }
    10681069        | RETURN '{' initializer_list comma_opt '}'
    1069                 { SemanticError( yylloc, "Initializer return is currently unimplemented." ); $$ = nullptr; } // FIX ME
     1070                { SemanticError( yylloc, "Initializer return is currently unimplemented." ); $$ = nullptr; }
    10701071        | THROW assignment_expression_opt ';'                           // handles rethrow
    10711072                { $$ = new StatementNode( build_throw( $2 ) ); }
     
    10761077        ;
    10771078
     1079fall_through_name:                                                                              // CFA
     1080        FALLTHRU
     1081        | FALLTHROUGH
     1082        ;
     1083
    10781084with_statement:
    10791085        WITH '(' tuple_expression_list ')' statement
     
    10861092mutex_statement:
    10871093        MUTEX '(' argument_expression_list ')' statement
    1088                 { SemanticError( yylloc, "Mutex statement is currently unimplemented." ); $$ = nullptr; } // FIX ME
     1094                { SemanticError( yylloc, "Mutex statement is currently unimplemented." ); $$ = nullptr; }
    10891095        ;
    10901096
    10911097when_clause:
    1092         WHEN '(' comma_expression ')'
    1093                 { $$ = $3; }
     1098        WHEN '(' comma_expression ')'                           { $$ = $3; }
    10941099        ;
    10951100
     
    11151120
    11161121timeout:
    1117         TIMEOUT '(' comma_expression ')'
    1118                 { $$ = $3; }
     1122        TIMEOUT '(' comma_expression ')'                        { $$ = $3; }
    11191123        ;
    11201124
     
    11591163        //empty
    11601164                { $$ = nullptr; }
    1161         | ';' conditional_expression
    1162                 { $$ = $2; }
     1165        | ';' conditional_expression                            { $$ = $2; }
    11631166        ;
    11641167
    11651168handler_key:
    1166         CATCH
    1167                 { $$ = CatchStmt::Terminate; }
    1168         | CATCHRESUME
    1169                 { $$ = CatchStmt::Resume; }
     1169        CATCH                                                                           { $$ = CatchStmt::Terminate; }
     1170        | CATCHRESUME                                                           { $$ = CatchStmt::Resume; }
    11701171        ;
    11711172
    11721173finally_clause:
    1173         FINALLY compound_statement
    1174                 {
    1175                         $$ = new StatementNode( build_finally( $2 ) );
    1176                 }
     1174        FINALLY compound_statement                                      { $$ = new StatementNode( build_finally( $2 ) ); }
    11771175        ;
    11781176
     
    13161314static_assert:
    13171315        STATICASSERT '(' constant_expression ',' string_literal ')' ';' // C11
    1318                 { SemanticError( yylloc, "Static assert is currently unimplemented." ); $$ = nullptr; } // FIX ME
     1316                { $$ = DeclarationNode::newStaticAssert( $3, $5 ); }
    13191317
    13201318// C declaration syntax is notoriously confusing and error prone. Cforall provides its own type, variable and function
     
    24132411                        $$ = $2;
    24142412                }
    2415         | forall '{' external_definition_list '}'                       // CFA, namespace
     2413        | type_qualifier_list '{' external_definition_list '}'                  // CFA, namespace
    24162414        ;
    24172415
  • src/ResolvExpr/CommonType.cc

    rb2fe1c9 r32cab5b  
    2828
    2929// #define DEBUG
     30#ifdef DEBUG
     31#define PRINT(x) x
     32#else
     33#define PRINT(x)
     34#endif
    3035
    3136namespace ResolvExpr {
     
    7075                // need unify to bind type variables
    7176                if ( unify( t1, t2, env, have, need, newOpen, indexer, common ) ) {
    72                         // std::cerr << "unify success: " << widenFirst << " " << widenSecond << std::endl;
     77                        PRINT(
     78                                std::cerr << "unify success: " << widenFirst << " " << widenSecond << std::endl;
     79                        )
    7380                        if ( (widenFirst || t2->get_qualifiers() <= t1->get_qualifiers()) && (widenSecond || t1->get_qualifiers() <= t2->get_qualifiers()) ) {
    74                                 // std::cerr << "widen okay" << std::endl;
     81                                PRINT(
     82                                        std::cerr << "widen okay" << std::endl;
     83                                )
    7584                                common->get_qualifiers() |= t1->get_qualifiers();
    7685                                common->get_qualifiers() |= t2->get_qualifiers();
     
    7887                        }
    7988                }
    80                 // std::cerr << "exact unify failed: " << t1 << " " << t2 << std::endl;
     89                PRINT(
     90                        std::cerr << "exact unify failed: " << t1 << " " << t2 << std::endl;
     91                )
    8192                return nullptr;
    8293        }
     
    94105                        // special case where one type has a reference depth of 1 larger than the other
    95106                        if ( diff > 0 || diff < 0 ) {
    96                                 // std::cerr << "reference depth diff: " << diff << std::endl;
     107                                PRINT(
     108                                        std::cerr << "reference depth diff: " << diff << std::endl;
     109                                )
    97110                                Type * result = nullptr;
    98111                                ReferenceType * ref1 = dynamic_cast< ReferenceType * >( type1 );
     
    109122                                if ( result && ref1 ) {
    110123                                        // formal is reference, so result should be reference
    111                                         // std::cerr << "formal is reference; result should be reference" << std::endl;
     124                                        PRINT(
     125                                                std::cerr << "formal is reference; result should be reference" << std::endl;
     126                                        )
    112127                                        result = new ReferenceType( ref1->get_qualifiers(), result );
    113128                                }
    114                                 // std::cerr << "common type of reference [" << type1 << "] and [" << type2 << "] is [" << result << "]" << std::endl;
     129                                PRINT(
     130                                        std::cerr << "common type of reference [" << type1 << "] and [" << type2 << "] is [" << result << "]" << std::endl;
     131                                )
    115132                                return result;
    116133                        }
  • src/ResolvExpr/ConversionCost.cc

    rb2fe1c9 r32cab5b  
    275275                        // xxx - not positive this is correct, but appears to allow casting int => enum
    276276                        cost = Cost::unsafe;
    277                 } else if ( dynamic_cast< ZeroType* >( dest ) != nullptr || dynamic_cast< OneType* >( dest ) != nullptr ) {
    278                         cost = Cost::unsafe;
    279                 } // if
     277                } // if
     278                // no cases for zero_t/one_t because it should not be possible to convert int, etc. to zero_t/one_t.
    280279        }
    281280
     
    309308                                // assignResult == 0 means Cost::Infinity
    310309                        } // if
    311                 } else if ( dynamic_cast< ZeroType * >( dest ) ) {
    312                         cost = Cost::unsafe;
     310                        // case case for zero_t because it should not be possible to convert pointers to zero_t.
    313311                } // if
    314312        }
  • src/ResolvExpr/Resolver.cc

    rb2fe1c9 r32cab5b  
    5959                void previsit( TypeDecl *typeDecl );
    6060                void previsit( EnumDecl * enumDecl );
     61                void previsit( StaticAssertDecl * assertDecl );
    6162
    6263                void previsit( ArrayType * at );
     
    361362                GuardValue( inEnumDecl );
    362363                inEnumDecl = true;
     364        }
     365
     366        void Resolver::previsit( StaticAssertDecl * assertDecl ) {
     367                findIntegralExpression( assertDecl->condition, indexer );
    363368        }
    364369
  • src/SymTab/Validate.cc

    rb2fe1c9 r32cab5b  
    8989                void previsit( StructDecl * aggregateDecl );
    9090                void previsit( UnionDecl * aggregateDecl );
     91                void previsit( StaticAssertDecl * assertDecl );
    9192
    9293          private:
     
    147148                void previsit( ObjectDecl * object );
    148149                void previsit( FunctionDecl * func );
     150                void previsit( FunctionType * ftype );
    149151                void previsit( StructDecl * aggrDecl );
    150152                void previsit( UnionDecl * aggrDecl );
     
    296298        }
    297299
    298         bool isStructOrUnion( Declaration *decl ) {
    299                 return dynamic_cast< StructDecl * >( decl ) || dynamic_cast< UnionDecl * >( decl );
     300        bool shouldHoist( Declaration *decl ) {
     301                return dynamic_cast< StructDecl * >( decl ) || dynamic_cast< UnionDecl * >( decl ) || dynamic_cast< StaticAssertDecl * >( decl );
    300302        }
    301303
     
    310312                } // if
    311313                // Always remove the hoisted aggregate from the inner structure.
    312                 GuardAction( [aggregateDecl]() { filter( aggregateDecl->members, isStructOrUnion, false ); } );
     314                GuardAction( [aggregateDecl]() { filter( aggregateDecl->members, shouldHoist, false ); } );
    313315        }
    314316
     
    328330                if ( inst->baseUnion ) {
    329331                        declsToAddBefore.push_front( inst->baseUnion );
     332                }
     333        }
     334
     335        void HoistStruct::previsit( StaticAssertDecl * assertDecl ) {
     336                if ( parentAggr ) {
     337                        declsToAddBefore.push_back( assertDecl );
    330338                }
    331339        }
     
    626634
    627635        void ForallPointerDecay::previsit( ObjectDecl *object ) {
    628                 forallFixer( object->type->forall, object );
    629                 if ( PointerType *pointer = dynamic_cast< PointerType * >( object->type ) ) {
    630                         forallFixer( pointer->base->forall, object );
    631                 } // if
     636                // ensure that operator names only apply to functions or function pointers
     637                if ( CodeGen::isOperator( object->name ) && ! dynamic_cast< FunctionType * >( object->type->stripDeclarator() ) ) {
     638                        SemanticError( object->location, toCString( "operator ", object->name.c_str(), " is not a function or function pointer." ) );
     639                }
    632640                object->fixUniqueId();
    633641        }
    634642
    635643        void ForallPointerDecay::previsit( FunctionDecl *func ) {
    636                 forallFixer( func->type->forall, func );
    637644                func->fixUniqueId();
     645        }
     646
     647        void ForallPointerDecay::previsit( FunctionType * ftype ) {
     648                forallFixer( ftype->forall, ftype );
    638649        }
    639650
  • src/SynTree/CompoundStmt.cc

    rb2fe1c9 r32cab5b  
    2323#include "Statement.h"                // for CompoundStmt, Statement, DeclStmt
    2424#include "SynTree/Label.h"            // for Label
    25 #include "SynTree/VarExprReplacer.h"  // for VarExprReplacer, VarExprReplace...
     25#include "SynTree/DeclReplacer.h"     // for DeclReplacer
    2626
    2727using std::string;
     
    4949        // recursively execute this routine. There may be more efficient ways of doing
    5050        // this.
    51         VarExprReplacer::DeclMap declMap;
     51        DeclReplacer::DeclMap declMap;
    5252        std::list< Statement * >::const_iterator origit = other.kids.begin();
    5353        for ( Statement * s : kids ) {
     
    6464        }
    6565        if ( ! declMap.empty() ) {
    66                 VarExprReplacer::replace( this, declMap );
     66                DeclReplacer::replace( this, declMap );
    6767        }
    6868}
  • src/SynTree/Declaration.cc

    rb2fe1c9 r32cab5b  
    8181
    8282
     83StaticAssertDecl::StaticAssertDecl( Expression * condition, ConstantExpr * message ) : Declaration( "", Type::StorageClasses(), LinkageSpec::C ), condition( condition ), message( message )  {
     84}
     85
     86StaticAssertDecl::StaticAssertDecl( const StaticAssertDecl & other ) : Declaration( other ), condition( maybeClone( other.condition ) ), message( maybeClone( other.message ) )  {
     87}
     88
     89StaticAssertDecl::~StaticAssertDecl() {
     90        delete condition;
     91        delete message;
     92}
     93
     94void StaticAssertDecl::print( std::ostream &os, Indenter indent ) const {
     95        os << "Static Assert with condition: ";
     96        condition->print( os, indent+1 );
     97        os << std::endl << indent << "and message: ";
     98        message->print( os, indent+1 );
     99os << std::endl;
     100}
     101
     102void StaticAssertDecl::printShort( std::ostream &os, Indenter indent ) const {
     103        print( os, indent );
     104}
     105
    83106// Local Variables: //
    84107// tab-width: 4 //
  • src/SynTree/Declaration.h

    rb2fe1c9 r32cab5b  
    365365};
    366366
     367class StaticAssertDecl : public Declaration {
     368public:
     369        Expression * condition;
     370        ConstantExpr * message;   // string literal
     371
     372        StaticAssertDecl( Expression * condition, ConstantExpr * message );
     373        StaticAssertDecl( const StaticAssertDecl & other );
     374        virtual ~StaticAssertDecl();
     375
     376        virtual StaticAssertDecl * clone() const override { return new StaticAssertDecl( *this ); }
     377        virtual void accept( Visitor &v ) override { v.visit( this ); }
     378        virtual StaticAssertDecl * acceptMutator( Mutator &m )  override { return m.mutate( this ); }
     379        virtual void print( std::ostream &os, Indenter indent = {} ) const override;
     380        virtual void printShort( std::ostream &os, Indenter indent = {} ) const override;
     381};
     382
    367383std::ostream & operator<<( std::ostream & os, const TypeDecl::Data & data );
    368384
  • src/SynTree/FunctionDecl.cc

    rb2fe1c9 r32cab5b  
    2626#include "Statement.h"           // for CompoundStmt
    2727#include "Type.h"                // for Type, FunctionType, Type::FuncSpecif...
    28 #include "VarExprReplacer.h"
     28#include "DeclReplacer.h"
    2929
    3030extern bool translation_unit_nomain;
     
    4141                : Parent( other ), type( maybeClone( other.type ) ), statements( maybeClone( other.statements ) ) {
    4242
    43         VarExprReplacer::DeclMap declMap;
     43        DeclReplacer::DeclMap declMap;
    4444        for ( auto p : group_iterate( other.type->parameters, type->parameters ) ) {
    4545                declMap[ std::get<0>(p) ] = std::get<1>(p);
     
    4949        }
    5050        if ( ! declMap.empty() ) {
    51                 VarExprReplacer::replace( this, declMap );
     51                DeclReplacer::replace( this, declMap );
    5252        }
    5353        cloneAll( other.withExprs, withExprs );
  • src/SynTree/Mutator.h

    rb2fe1c9 r32cab5b  
    3434        virtual Declaration * mutate( TypedefDecl * typeDecl ) = 0;
    3535        virtual AsmDecl * mutate( AsmDecl * asmDecl ) = 0;
     36        virtual StaticAssertDecl * mutate( StaticAssertDecl * assertDecl ) = 0;
    3637
    3738        virtual CompoundStmt * mutate( CompoundStmt * compoundStmt ) = 0;
  • src/SynTree/Statement.cc

    rb2fe1c9 r32cab5b  
    3434Statement::Statement( const std::list<Label> & labels ) : labels( labels ) {}
    3535
    36 void Statement::print( std::ostream & os, Indenter ) const {
     36void Statement::print( std::ostream & os, Indenter indent ) const {
    3737        if ( ! labels.empty() ) {
    38                 os << "Labels: {";
     38                os << indent << "... Labels: {";
    3939                for ( const Label & l : labels ) {
    4040                        os << l << ",";
     
    223223
    224224void CaseStmt::print( std::ostream &os, Indenter indent ) const {
    225         if ( isDefault() ) os << "Default ";
     225        if ( isDefault() ) os << indent << "Default ";
    226226        else {
    227                 os << "Case ";
     227                os << indent << "Case ";
    228228                condition->print( os, indent );
    229229        } // if
     
    231231
    232232        for ( Statement * stmt : stmts ) {
     233                os << indent+1;
    233234                stmt->print( os, indent+1 );
    234235        }
     
    478479}
    479480
    480 void NullStmt::print( std::ostream &os, Indenter ) const {
     481void NullStmt::print( std::ostream &os, Indenter indent ) const {
    481482        os << "Null Statement" << endl;
     483        Statement::print( os, indent );
    482484}
    483485
  • src/SynTree/Statement.h

    rb2fe1c9 r32cab5b  
    1010// Created On       : Mon May 18 07:44:20 2015
    1111// Last Modified By : Peter A. Buhr
    12 // Last Modified On : Sun Sep  3 20:46:46 2017
    13 // Update Count     : 77
     12// Last Modified On : Thu Mar  8 14:53:02 2018
     13// Update Count     : 78
    1414//
    1515
     
    255255class BranchStmt : public Statement {
    256256  public:
    257         enum Type { Goto = 0, Break, Continue };
     257        enum Type { Goto = 0, Break, Continue, FallThrough, FallThroughDefault };
    258258
    259259        // originalTarget kept for error messages.
  • src/SynTree/SynTree.h

    rb2fe1c9 r32cab5b  
    3838class TypedefDecl;
    3939class AsmDecl;
     40class StaticAssertDecl;
    4041
    4142class Statement;
  • src/SynTree/TypeSubstitution.cc

    rb2fe1c9 r32cab5b  
    149149                return inst;
    150150        } else {
    151 ///         std::cerr << "found " << inst->get_name() << ", replacing with ";
    152 ///         i->second->print( std::cerr );
    153 ///         std::cerr << std::endl;
     151                // cut off infinite loop for the case where a type is bound to itself.
     152                // Note: this does not prevent cycles in the general case, so it may be necessary to do something more sophisticated here.
     153                // TODO: investigate preventing type variables from being bound to themselves in the first place.
     154                if ( TypeInstType * replacement = dynamic_cast< TypeInstType * >( i->second ) ) {
     155                        if ( inst->name == replacement->name ) {
     156                                return inst;
     157                        }
     158                }
     159                // std::cerr << "found " << inst->name << ", replacing with " << i->second << std::endl;
    154160                subCount++;
    155161                Type * newtype = i->second->clone();
    156162                newtype->get_qualifiers() |= inst->get_qualifiers();
    157163                delete inst;
    158                 return newtype;
     164                // Note: need to recursively apply substitution to the new type because normalize does not substitute bound vars, but bound vars must be substituted when not in freeOnly mode.
     165                return newtype->acceptMutator( *visitor );
    159166        } // if
    160167}
  • src/SynTree/TypeSubstitution.h

    rb2fe1c9 r32cab5b  
    129129
    130130// definitition must happen after PassVisitor is included so that WithGuards can be used
    131 struct TypeSubstitution::Substituter : public WithGuards {
     131struct TypeSubstitution::Substituter : public WithGuards, public WithVisitorRef<Substituter> {
    132132                Substituter( TypeSubstitution & sub, bool freeOnly ) : sub( sub ), freeOnly( freeOnly ) {}
    133133
  • src/SynTree/Visitor.h

    rb2fe1c9 r32cab5b  
    3636        virtual void visit( TypedefDecl * typeDecl ) = 0;
    3737        virtual void visit( AsmDecl * asmDecl ) = 0;
     38        virtual void visit( StaticAssertDecl * assertDecl ) = 0;
    3839
    3940        virtual void visit( CompoundStmt * compoundStmt ) = 0;
  • src/SynTree/module.mk

    rb2fe1c9 r32cab5b  
    4848       SynTree/TypeSubstitution.cc \
    4949       SynTree/Attribute.cc \
    50        SynTree/VarExprReplacer.cc
     50       SynTree/DeclReplacer.cc
    5151
  • src/benchmark/bench.h

    rb2fe1c9 r32cab5b  
    1010#if defined(__cforall)
    1111}
    12 #include <bits/cfatime.h>
     12//#include <bits/cfatime.h>
    1313#endif
    1414
  • src/libcfa/Makefile.am

    rb2fe1c9 r32cab5b  
    1111## Created On       : Sun May 31 08:54:01 2015
    1212## Last Modified By : Peter A. Buhr
    13 ## Last Modified On : Fri Feb  9 15:51:24 2018
    14 ## Update Count     : 223
     13## Last Modified On : Thu Apr 12 14:38:34 2018
     14## Update Count     : 231
    1515###############################################################################
    1616
     
    4646CC = ${abs_top_srcdir}/src/driver/cfa
    4747
    48 headers = fstream iostream iterator limits rational stdlib \
     48headers = fstream iostream iterator limits rational time stdlib \
    4949          containers/maybe containers/pair containers/result containers/vector
    5050
     
    100100        math                            \
    101101        gmp                             \
     102        time_t.h                        \
     103        clock                   \
    102104        bits/align.h            \
    103         bits/cfatime.h          \
    104105        bits/containers.h               \
    105106        bits/defs.h             \
  • src/libcfa/Makefile.in

    rb2fe1c9 r32cab5b  
    150150am__libcfa_d_a_SOURCES_DIST = libcfa-prelude.c interpose.c \
    151151        bits/debug.c fstream.c iostream.c iterator.c limits.c \
    152         rational.c stdlib.c containers/maybe.c containers/pair.c \
    153         containers/result.c containers/vector.c \
     152        rational.c time.c stdlib.c containers/maybe.c \
     153        containers/pair.c containers/result.c containers/vector.c \
    154154        concurrency/coroutine.c concurrency/thread.c \
    155155        concurrency/kernel.c concurrency/monitor.c assert.c \
     
    165165        libcfa_d_a-iostream.$(OBJEXT) libcfa_d_a-iterator.$(OBJEXT) \
    166166        libcfa_d_a-limits.$(OBJEXT) libcfa_d_a-rational.$(OBJEXT) \
    167         libcfa_d_a-stdlib.$(OBJEXT) \
     167        libcfa_d_a-time.$(OBJEXT) libcfa_d_a-stdlib.$(OBJEXT) \
    168168        containers/libcfa_d_a-maybe.$(OBJEXT) \
    169169        containers/libcfa_d_a-pair.$(OBJEXT) \
     
    184184libcfa_a_LIBADD =
    185185am__libcfa_a_SOURCES_DIST = libcfa-prelude.c interpose.c bits/debug.c \
    186         fstream.c iostream.c iterator.c limits.c rational.c stdlib.c \
    187         containers/maybe.c containers/pair.c containers/result.c \
    188         containers/vector.c concurrency/coroutine.c \
    189         concurrency/thread.c concurrency/kernel.c \
    190         concurrency/monitor.c assert.c exception.c virtual.c \
    191         concurrency/CtxSwitch-@MACHINE_TYPE@.S concurrency/alarm.c \
    192         concurrency/invoke.c concurrency/preemption.c
     186        fstream.c iostream.c iterator.c limits.c rational.c time.c \
     187        stdlib.c containers/maybe.c containers/pair.c \
     188        containers/result.c containers/vector.c \
     189        concurrency/coroutine.c concurrency/thread.c \
     190        concurrency/kernel.c concurrency/monitor.c assert.c \
     191        exception.c virtual.c concurrency/CtxSwitch-@MACHINE_TYPE@.S \
     192        concurrency/alarm.c concurrency/invoke.c \
     193        concurrency/preemption.c
    193194@BUILD_CONCURRENCY_TRUE@am__objects_5 = concurrency/libcfa_a-coroutine.$(OBJEXT) \
    194195@BUILD_CONCURRENCY_TRUE@        concurrency/libcfa_a-thread.$(OBJEXT) \
     
    197198am__objects_6 = libcfa_a-fstream.$(OBJEXT) libcfa_a-iostream.$(OBJEXT) \
    198199        libcfa_a-iterator.$(OBJEXT) libcfa_a-limits.$(OBJEXT) \
    199         libcfa_a-rational.$(OBJEXT) libcfa_a-stdlib.$(OBJEXT) \
    200         containers/libcfa_a-maybe.$(OBJEXT) \
     200        libcfa_a-rational.$(OBJEXT) libcfa_a-time.$(OBJEXT) \
     201        libcfa_a-stdlib.$(OBJEXT) containers/libcfa_a-maybe.$(OBJEXT) \
    201202        containers/libcfa_a-pair.$(OBJEXT) \
    202203        containers/libcfa_a-result.$(OBJEXT) \
     
    260261  esac
    261262am__nobase_cfa_include_HEADERS_DIST = fstream iostream iterator limits \
    262         rational stdlib containers/maybe containers/pair \
     263        rational time stdlib containers/maybe containers/pair \
    263264        containers/result containers/vector concurrency/coroutine \
    264265        concurrency/thread concurrency/kernel concurrency/monitor \
    265         ${shell find stdhdr -type f -printf "%p "} math gmp \
    266         bits/align.h bits/cfatime.h bits/containers.h bits/defs.h \
    267         bits/debug.h bits/locks.h concurrency/invoke.h
     266        ${shell find stdhdr -type f -printf "%p "} math gmp time_t.h \
     267        clock bits/align.h bits/containers.h bits/defs.h bits/debug.h \
     268        bits/locks.h concurrency/invoke.h
    268269HEADERS = $(nobase_cfa_include_HEADERS)
    269270am__tagged_files = $(HEADERS) $(SOURCES) $(TAGS_FILES) $(LISP)
     
    419420EXTRA_FLAGS = -g -Wall -Wno-unused-function -imacros libcfa-prelude.c @CFA_FLAGS@
    420421AM_CCASFLAGS = @CFA_FLAGS@
    421 headers = fstream iostream iterator limits rational stdlib \
     422headers = fstream iostream iterator limits rational time stdlib \
    422423        containers/maybe containers/pair containers/result \
    423424        containers/vector $(am__append_3)
     
    436437        math                            \
    437438        gmp                             \
     439        time_t.h                        \
     440        clock                   \
    438441        bits/align.h            \
    439         bits/cfatime.h          \
    440442        bits/containers.h               \
    441443        bits/defs.h             \
     
    611613@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libcfa_a-rational.Po@am__quote@
    612614@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libcfa_a-stdlib.Po@am__quote@
     615@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libcfa_a-time.Po@am__quote@
    613616@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libcfa_a-virtual.Po@am__quote@
    614617@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libcfa_d_a-assert.Po@am__quote@
     
    622625@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libcfa_d_a-rational.Po@am__quote@
    623626@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libcfa_d_a-stdlib.Po@am__quote@
     627@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libcfa_d_a-time.Po@am__quote@
    624628@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libcfa_d_a-virtual.Po@am__quote@
    625629@AMDEP_TRUE@@am__include@ @am__quote@bits/$(DEPDIR)/libcfa_a-debug.Po@am__quote@
     
    786790@am__fastdepCC_FALSE@   $(AM_V_CC@am__nodep@)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libcfa_d_a_CFLAGS) $(CFLAGS) -c -o libcfa_d_a-rational.obj `if test -f 'rational.c'; then $(CYGPATH_W) 'rational.c'; else $(CYGPATH_W) '$(srcdir)/rational.c'; fi`
    787791
     792libcfa_d_a-time.o: time.c
     793@am__fastdepCC_TRUE@    $(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libcfa_d_a_CFLAGS) $(CFLAGS) -MT libcfa_d_a-time.o -MD -MP -MF $(DEPDIR)/libcfa_d_a-time.Tpo -c -o libcfa_d_a-time.o `test -f 'time.c' || echo '$(srcdir)/'`time.c
     794@am__fastdepCC_TRUE@    $(AM_V_at)$(am__mv) $(DEPDIR)/libcfa_d_a-time.Tpo $(DEPDIR)/libcfa_d_a-time.Po
     795@AMDEP_TRUE@@am__fastdepCC_FALSE@       $(AM_V_CC)source='time.c' object='libcfa_d_a-time.o' libtool=no @AMDEPBACKSLASH@
     796@AMDEP_TRUE@@am__fastdepCC_FALSE@       DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
     797@am__fastdepCC_FALSE@   $(AM_V_CC@am__nodep@)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libcfa_d_a_CFLAGS) $(CFLAGS) -c -o libcfa_d_a-time.o `test -f 'time.c' || echo '$(srcdir)/'`time.c
     798
     799libcfa_d_a-time.obj: time.c
     800@am__fastdepCC_TRUE@    $(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libcfa_d_a_CFLAGS) $(CFLAGS) -MT libcfa_d_a-time.obj -MD -MP -MF $(DEPDIR)/libcfa_d_a-time.Tpo -c -o libcfa_d_a-time.obj `if test -f 'time.c'; then $(CYGPATH_W) 'time.c'; else $(CYGPATH_W) '$(srcdir)/time.c'; fi`
     801@am__fastdepCC_TRUE@    $(AM_V_at)$(am__mv) $(DEPDIR)/libcfa_d_a-time.Tpo $(DEPDIR)/libcfa_d_a-time.Po
     802@AMDEP_TRUE@@am__fastdepCC_FALSE@       $(AM_V_CC)source='time.c' object='libcfa_d_a-time.obj' libtool=no @AMDEPBACKSLASH@
     803@AMDEP_TRUE@@am__fastdepCC_FALSE@       DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
     804@am__fastdepCC_FALSE@   $(AM_V_CC@am__nodep@)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libcfa_d_a_CFLAGS) $(CFLAGS) -c -o libcfa_d_a-time.obj `if test -f 'time.c'; then $(CYGPATH_W) 'time.c'; else $(CYGPATH_W) '$(srcdir)/time.c'; fi`
     805
    788806libcfa_d_a-stdlib.o: stdlib.c
    789807@am__fastdepCC_TRUE@    $(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libcfa_d_a_CFLAGS) $(CFLAGS) -MT libcfa_d_a-stdlib.o -MD -MP -MF $(DEPDIR)/libcfa_d_a-stdlib.Tpo -c -o libcfa_d_a-stdlib.o `test -f 'stdlib.c' || echo '$(srcdir)/'`stdlib.c
     
    10791097@AMDEP_TRUE@@am__fastdepCC_FALSE@       DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
    10801098@am__fastdepCC_FALSE@   $(AM_V_CC@am__nodep@)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libcfa_a_CFLAGS) $(CFLAGS) -c -o libcfa_a-rational.obj `if test -f 'rational.c'; then $(CYGPATH_W) 'rational.c'; else $(CYGPATH_W) '$(srcdir)/rational.c'; fi`
     1099
     1100libcfa_a-time.o: time.c
     1101@am__fastdepCC_TRUE@    $(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libcfa_a_CFLAGS) $(CFLAGS) -MT libcfa_a-time.o -MD -MP -MF $(DEPDIR)/libcfa_a-time.Tpo -c -o libcfa_a-time.o `test -f 'time.c' || echo '$(srcdir)/'`time.c
     1102@am__fastdepCC_TRUE@    $(AM_V_at)$(am__mv) $(DEPDIR)/libcfa_a-time.Tpo $(DEPDIR)/libcfa_a-time.Po
     1103@AMDEP_TRUE@@am__fastdepCC_FALSE@       $(AM_V_CC)source='time.c' object='libcfa_a-time.o' libtool=no @AMDEPBACKSLASH@
     1104@AMDEP_TRUE@@am__fastdepCC_FALSE@       DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
     1105@am__fastdepCC_FALSE@   $(AM_V_CC@am__nodep@)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libcfa_a_CFLAGS) $(CFLAGS) -c -o libcfa_a-time.o `test -f 'time.c' || echo '$(srcdir)/'`time.c
     1106
     1107libcfa_a-time.obj: time.c
     1108@am__fastdepCC_TRUE@    $(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libcfa_a_CFLAGS) $(CFLAGS) -MT libcfa_a-time.obj -MD -MP -MF $(DEPDIR)/libcfa_a-time.Tpo -c -o libcfa_a-time.obj `if test -f 'time.c'; then $(CYGPATH_W) 'time.c'; else $(CYGPATH_W) '$(srcdir)/time.c'; fi`
     1109@am__fastdepCC_TRUE@    $(AM_V_at)$(am__mv) $(DEPDIR)/libcfa_a-time.Tpo $(DEPDIR)/libcfa_a-time.Po
     1110@AMDEP_TRUE@@am__fastdepCC_FALSE@       $(AM_V_CC)source='time.c' object='libcfa_a-time.obj' libtool=no @AMDEPBACKSLASH@
     1111@AMDEP_TRUE@@am__fastdepCC_FALSE@       DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
     1112@am__fastdepCC_FALSE@   $(AM_V_CC@am__nodep@)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libcfa_a_CFLAGS) $(CFLAGS) -c -o libcfa_a-time.obj `if test -f 'time.c'; then $(CYGPATH_W) 'time.c'; else $(CYGPATH_W) '$(srcdir)/time.c'; fi`
    10811113
    10821114libcfa_a-stdlib.o: stdlib.c
  • src/libcfa/bits/locks.h

    rb2fe1c9 r32cab5b  
    1010// Created On       : Tue Oct 31 15:14:38 2017
    1111// Last Modified By : Peter A. Buhr
    12 // Last Modified On : Fri Dec  8 16:02:22 2017
    13 // Update Count     : 1
     12// Last Modified On : Fri Mar 30 18:18:13 2018
     13// Update Count     : 9
    1414//
    1515
     
    6464
    6565        extern void yield( unsigned int );
    66         extern thread_local struct thread_desc *    volatile this_thread;
    67         extern thread_local struct processor *      volatile this_processor;
    6866
    6967        static inline void ?{}( __spinlock_t & this ) {
     
    7674                if( result ) {
    7775                        disable_interrupts();
    78                         __cfaabi_dbg_debug_do(
    79                                 this.prev_name = caller;
    80                                 this.prev_thrd = this_thread;
    81                         )
     76                        // __cfaabi_dbg_debug_do(
     77                        //      this.prev_name = caller;
     78                        //      this.prev_thrd = TL_GET( this_thread );
     79                        // )
    8280                }
    8381                return result;
     
    107105                }
    108106                disable_interrupts();
    109                 __cfaabi_dbg_debug_do(
    110                         this.prev_name = caller;
    111                         this.prev_thrd = this_thread;
    112                 )
     107                // __cfaabi_dbg_debug_do(
     108                //      this.prev_name = caller;
     109                //      this.prev_thrd = TL_GET( this_thread );
     110                // )
    113111        }
    114112
  • src/libcfa/concurrency/alarm.c

    rb2fe1c9 r32cab5b  
    1010// Created On       : Fri Jun 2 11:31:25 2017
    1111// Last Modified By : Peter A. Buhr
    12 // Last Modified On : Fri Jul 21 22:35:18 2017
    13 // Update Count     : 1
     12// Last Modified On : Mon Apr  9 13:36:18 2018
     13// Update Count     : 61
    1414//
    1515
     
    2626#include "preemption.h"
    2727
    28 
    29 static inline void ?{}( itimerval & this, __cfa_time_t * alarm ) with( this ) {
    30         it_value.tv_sec = alarm->val / (1`cfa_s).val;                   // seconds
    31         it_value.tv_usec = max( (alarm->val % (1`cfa_s).val) / (1`cfa_us).val, 1000 ); // microseconds
    32         it_interval.tv_sec = 0;
    33         it_interval.tv_usec = 0;
    34 }
    35 
    36 static inline void ?{}( __cfa_time_t & this, timespec * curr ) {
    37         uint64_t secs  = curr->tv_sec;
    38         uint64_t nsecs = curr->tv_nsec;
    39         this.val = from_s(secs).val + nsecs;
    40 }
    41 
    4228//=============================================================================================
    4329// Clock logic
    4430//=============================================================================================
    4531
    46 __cfa_time_t __kernel_get_time() {
     32Time __kernel_get_time() {
    4733        timespec curr;
    48         clock_gettime( CLOCK_REALTIME, &curr );
    49         return (__cfa_time_t){ &curr };
     34        clock_gettime( CLOCK_MONOTONIC_RAW, &curr );            // CLOCK_REALTIME
     35        return (Time){ curr };
    5036}
    5137
    52 void __kernel_set_timer( __cfa_time_t alarm ) {
    53         itimerval val = { &alarm };
    54         setitimer( ITIMER_REAL, &val, NULL );
     38void __kernel_set_timer( Duration alarm ) {
     39        setitimer( ITIMER_REAL, &(itimerval){ alarm }, NULL );
    5540}
    5641
     
    5944//=============================================================================================
    6045
    61 void ?{}( alarm_node_t & this, thread_desc * thrd, __cfa_time_t alarm = 0`cfa_s, __cfa_time_t period = 0`cfa_s ) with( this ) {
     46void ?{}( alarm_node_t & this, thread_desc * thrd, Time alarm, Duration period ) with( this ) {
    6247        this.thrd = thrd;
    6348        this.alarm = alarm;
     
    6853}
    6954
    70 void ?{}( alarm_node_t & this, processor   * proc, __cfa_time_t alarm = 0`cfa_s, __cfa_time_t period = 0`cfa_s ) with( this ) {
     55void ?{}( alarm_node_t & this, processor   * proc, Time alarm, Duration period ) with( this ) {
    7156        this.proc = proc;
    7257        this.alarm = alarm;
  • src/libcfa/concurrency/alarm.h

    rb2fe1c9 r32cab5b  
    1010// Created On       : Fri Jun 2 11:31:25 2017
    1111// Last Modified By : Peter A. Buhr
    12 // Last Modified On : Sat Jul 22 09:59:27 2017
    13 // Update Count     : 3
     12// Last Modified On : Mon Mar 26 16:25:41 2018
     13// Update Count     : 11
    1414//
    1515
     
    2121#include <assert.h>
    2222
    23 #include "bits/cfatime.h"
     23#include "time"
    2424
    2525struct thread_desc;
     
    3030//=============================================================================================
    3131
    32 __cfa_time_t __kernel_get_time();
    33 void __kernel_set_timer( __cfa_time_t alarm );
     32Time __kernel_get_time();
     33void __kernel_set_timer( Duration alarm );
    3434
    3535//=============================================================================================
     
    3838
    3939struct alarm_node_t {
    40         __cfa_time_t alarm;             // time when alarm goes off
    41         __cfa_time_t period;            // if > 0 => period of alarm
     40        Time alarm;                             // time when alarm goes off
     41        Duration period;                        // if > 0 => period of alarm
    4242        alarm_node_t * next;            // intrusive link list field
    4343
     
    5353typedef alarm_node_t ** __alarm_it_t;
    5454
    55 void ?{}( alarm_node_t & this, thread_desc * thrd, __cfa_time_t alarm = 0`cfa_s, __cfa_time_t period = 0`cfa_s );
    56 void ?{}( alarm_node_t & this, processor   * proc, __cfa_time_t alarm = 0`cfa_s, __cfa_time_t period = 0`cfa_s );
     55void ?{}( alarm_node_t & this, thread_desc * thrd, Time alarm, Duration period );
     56void ?{}( alarm_node_t & this, processor   * proc, Time alarm, Duration period );
    5757void ^?{}( alarm_node_t & this );
    5858
  • src/libcfa/concurrency/coroutine

    rb2fe1c9 r32cab5b  
    1010// Created On       : Mon Nov 28 12:27:26 2016
    1111// Last Modified By : Peter A. Buhr
    12 // Last Modified On : Wed Aug 30 07:58:29 2017
    13 // Update Count     : 3
     12// Last Modified On : Fri Mar 30 18:23:45 2018
     13// Update Count     : 8
    1414//
    1515
     
    6060}
    6161
    62 // Get current coroutine
    63 extern thread_local coroutine_desc * volatile this_coroutine;
    64 
    6562// Private wrappers for context switch and stack creation
    6663extern void CoroutineCtxSwitch(coroutine_desc * src, coroutine_desc * dst);
     
    6966// Suspend implementation inlined for performance
    7067static inline void suspend() {
    71         coroutine_desc * src = this_coroutine;          // optimization
     68        coroutine_desc * src = TL_GET( this_coroutine );                        // optimization
    7269
    7370        assertf( src->last != 0,
     
    8683forall(dtype T | is_coroutine(T))
    8784static inline void resume(T & cor) {
    88         coroutine_desc * src = this_coroutine;          // optimization
     85        coroutine_desc * src = TL_GET( this_coroutine );                        // optimization
    8986        coroutine_desc * dst = get_coroutine(cor);
    9087
     
    111108
    112109static inline void resume(coroutine_desc * dst) {
    113         coroutine_desc * src = this_coroutine;          // optimization
     110        coroutine_desc * src = TL_GET( this_coroutine );                        // optimization
    114111
    115112        // not resuming self ?
  • src/libcfa/concurrency/coroutine.c

    rb2fe1c9 r32cab5b  
    1010// Created On       : Mon Nov 28 12:27:26 2016
    1111// Last Modified By : Peter A. Buhr
    12 // Last Modified On : Thu Feb  8 16:10:31 2018
    13 // Update Count     : 4
     12// Last Modified On : Fri Mar 30 17:20:57 2018
     13// Update Count     : 9
    1414//
    1515
     
    9999// Wrapper for co
    100100void CoroutineCtxSwitch(coroutine_desc* src, coroutine_desc* dst) {
    101         verify( preemption_state.enabled || this_processor->do_terminate );
     101        verify( TL_GET( preemption_state ).enabled || TL_GET( this_processor )->do_terminate );
    102102        disable_interrupts();
    103103
     
    106106
    107107        // set new coroutine that task is executing
    108         this_coroutine = dst;
     108        TL_SET( this_coroutine, dst );
    109109
    110110        // context switch to specified coroutine
     
    117117
    118118        enable_interrupts( __cfaabi_dbg_ctx );
    119         verify( preemption_state.enabled || this_processor->do_terminate );
     119        verify( TL_GET( preemption_state ).enabled || TL_GET( this_processor )->do_terminate );
    120120} //ctxSwitchDirect
    121121
     
    172172
    173173        void __leave_coroutine(void) {
    174                 coroutine_desc * src = this_coroutine;          // optimization
     174                coroutine_desc * src = TL_GET( this_coroutine ); // optimization
    175175
    176176                assertf( src->starter != 0,
  • src/libcfa/concurrency/invoke.h

    rb2fe1c9 r32cab5b  
    1010// Created On       : Tue Jan 17 12:27:26 2016
    1111// Last Modified By : Peter A. Buhr
    12 // Last Modified On : Fri Feb  9 14:41:55 2018
    13 // Update Count     : 6
     12// Last Modified On : Fri Mar 30 22:33:59 2018
     13// Update Count     : 30
    1414//
    1515
     
    1717#include "bits/defs.h"
    1818#include "bits/locks.h"
     19
     20#define TL_GET( member ) kernelThreadData.member
     21#define TL_SET( member, value ) kernelThreadData.member = value;
    1922
    2023#ifdef __cforall
     
    3033                static inline struct thread_desc             * & get_next( struct thread_desc             & this );
    3134                static inline struct __condition_criterion_t * & get_next( struct __condition_criterion_t & this );
     35
     36                extern thread_local struct KernelThreadData {
     37                        struct coroutine_desc * volatile this_coroutine;
     38                        struct thread_desc    * volatile this_thread;
     39                        struct processor      * volatile this_processor;
     40
     41                        struct {
     42                                volatile unsigned short disable_count;
     43                                volatile bool enabled;
     44                                volatile bool in_progress;
     45                        } preemption_state;
     46                } kernelThreadData;
    3247        }
     48
     49        static inline struct coroutine_desc * volatile active_coroutine() { return TL_GET( this_coroutine ); }
     50        static inline struct thread_desc * volatile active_thread() { return TL_GET( this_thread ); }
     51        static inline struct processor * volatile active_processor() { return TL_GET( this_processor ); }
    3352        #endif
    3453
    3554        struct coStack_t {
    36                 // size of stack
    37                 size_t size;
    38 
    39                 // pointer to stack
    40                 void *storage;
    41 
    42                 // stack grows towards stack limit
    43                 void *limit;
    44 
    45                 // base of stack
    46                 void *base;
    47 
    48                 // address of cfa_context_t
    49                 void *context;
    50 
    51                 // address of top of storage
    52                 void *top;
    53 
    54                 // whether or not the user allocated the stack
    55                 bool userStack;
     55                size_t size;                                                                    // size of stack
     56                void * storage;                                                                 // pointer to stack
     57                void * limit;                                                                   // stack grows towards stack limit
     58                void * base;                                                                    // base of stack
     59                void * context;                                                                 // address of cfa_context_t
     60                void * top;                                                                             // address of top of storage
     61                bool userStack;                                                                 // whether or not the user allocated the stack
    5662        };
    5763
     
    5965
    6066        struct coroutine_desc {
    61                 // stack information of the coroutine
    62                 struct coStack_t stack;
    63 
    64                 // textual name for coroutine/task, initialized by uC++ generated code
    65                 const char *name;
    66 
    67                 // copy of global UNIX variable errno
    68                 int errno_;
    69 
    70                 // current execution status for coroutine
    71                 enum coroutine_state state;
    72 
    73                 // first coroutine to resume this one
    74                 struct coroutine_desc * starter;
    75 
    76                 // last coroutine to resume this one
    77                 struct coroutine_desc * last;
     67                struct coStack_t stack;                                                 // stack information of the coroutine
     68                const char * name;                                                              // textual name for coroutine/task, initialized by uC++ generated code
     69                int errno_;                                                                             // copy of global UNIX variable errno
     70                enum coroutine_state state;                                             // current execution status for coroutine
     71                struct coroutine_desc * starter;                                // first coroutine to resume this one
     72                struct coroutine_desc * last;                                   // last coroutine to resume this one
    7873        };
    7974
  • src/libcfa/concurrency/kernel

    rb2fe1c9 r32cab5b  
    1010// Created On       : Tue Jan 17 12:27:26 2017
    1111// Last Modified By : Peter A. Buhr
    12 // Last Modified On : Sat Jul 22 09:58:39 2017
    13 // Update Count     : 2
     12// Last Modified On : Tue Apr 10 14:46:49 2018
     13// Update Count     : 10
    1414//
    1515
     
    1919
    2020#include "invoke.h"
    21 #include "bits/cfatime.h"
     21#include "time_t.h"
    2222
    2323extern "C" {
     
    4949
    5050        // Preemption rate on this cluster
    51         __cfa_time_t preemption_rate;
     51        Duration preemption_rate;
    5252};
    5353
    54 extern __cfa_time_t default_preemption();
     54extern Duration default_preemption();
    5555
    5656void ?{} (cluster & this);
  • src/libcfa/concurrency/kernel.c

    rb2fe1c9 r32cab5b  
    1010// Created On       : Tue Jan 17 12:27:26 2017
    1111// Last Modified By : Peter A. Buhr
    12 // Last Modified On : Thu Feb  8 23:52:19 2018
    13 // Update Count     : 5
     12// Last Modified On : Mon Apr  9 16:11:46 2018
     13// Update Count     : 24
    1414//
    1515
     
    2525
    2626//CFA Includes
     27#include "time"
    2728#include "kernel_private.h"
    2829#include "preemption.h"
     
    5253// Global state
    5354
    54 thread_local coroutine_desc * volatile this_coroutine;
    55 thread_local thread_desc *    volatile this_thread;
    56 thread_local processor *      volatile this_processor;
    57 
    5855// volatile thread_local bool preemption_in_progress = 0;
    5956// volatile thread_local bool preemption_enabled = false;
    6057// volatile thread_local unsigned short disable_preempt_count = 1;
    6158
    62 volatile thread_local __cfa_kernel_preemption_state_t preemption_state = { false, false, 1 };
     59thread_local struct KernelThreadData kernelThreadData = {
     60        NULL,
     61        NULL,
     62        NULL,
     63        { 1, false, false }
     64};
    6365
    6466//-----------------------------------------------------------------------------
     
    172174                terminate(&this);
    173175                verify(this.do_terminate);
    174                 verify(this_processor != &this);
     176                verify(TL_GET( this_processor ) != &this);
    175177                P( terminated );
    176                 verify(this_processor != &this);
     178                verify(TL_GET( this_processor ) != &this);
    177179                pthread_join( kernel_thread, NULL );
    178180        }
     
    213215                        if(readyThread)
    214216                        {
    215                                 verify( !preemption_state.enabled );
     217                                verify( ! TL_GET( preemption_state ).enabled );
    216218
    217219                                runThread(this, readyThread);
    218220
    219                                 verify( !preemption_state.enabled );
     221                                verify( ! TL_GET( preemption_state ).enabled );
    220222
    221223                                //Some actions need to be taken from the kernel
     
    249251
    250252        //Update global state
    251         this_thread = dst;
     253        TL_SET( this_thread, dst );
    252254
    253255        // Context Switch to the thread
     
    257259
    258260void returnToKernel() {
    259         coroutine_desc * proc_cor = get_coroutine(this_processor->runner);
    260         coroutine_desc * thrd_cor = this_thread->curr_cor = this_coroutine;
     261        coroutine_desc * proc_cor = get_coroutine(TL_GET( this_processor )->runner);
     262        coroutine_desc * thrd_cor = TL_GET( this_thread )->curr_cor = TL_GET( this_coroutine );
    261263        ThreadCtxSwitch(thrd_cor, proc_cor);
    262264}
     
    266268void finishRunning(processor * this) with( this->finish ) {
    267269        if( action_code == Release ) {
    268                 verify( !preemption_state.enabled );
     270                verify( ! TL_GET( preemption_state ).enabled );
    269271                unlock( *lock );
    270272        }
     
    273275        }
    274276        else if( action_code == Release_Schedule ) {
    275                 verify( !preemption_state.enabled );
     277                verify( ! TL_GET( preemption_state ).enabled );
    276278                unlock( *lock );
    277279                ScheduleThread( thrd );
    278280        }
    279281        else if( action_code == Release_Multi ) {
    280                 verify( !preemption_state.enabled );
     282                verify( ! TL_GET( preemption_state ).enabled );
    281283                for(int i = 0; i < lock_count; i++) {
    282284                        unlock( *locks[i] );
     
    307309void * CtxInvokeProcessor(void * arg) {
    308310        processor * proc = (processor *) arg;
    309         this_processor = proc;
    310         this_coroutine = NULL;
    311         this_thread = NULL;
    312         preemption_state.enabled = false;
    313         preemption_state.disable_count = 1;
     311        TL_SET( this_processor, proc );
     312        TL_SET( this_coroutine, NULL );
     313        TL_SET( this_thread, NULL );
     314        TL_GET( preemption_state ).enabled = false;
     315        TL_GET( preemption_state ).disable_count = 1;
    314316        // SKULLDUGGERY: We want to create a context for the processor coroutine
    315317        // which is needed for the 2-step context switch. However, there is no reason
     
    323325
    324326        //Set global state
    325         this_coroutine = get_coroutine(proc->runner);
    326         this_thread = NULL;
     327        TL_SET( this_coroutine, get_coroutine(proc->runner) );
     328        TL_SET( this_thread, NULL );
    327329
    328330        //We now have a proper context from which to schedule threads
     
    352354
    353355void kernel_first_resume(processor * this) {
    354         coroutine_desc * src = this_coroutine;
     356        coroutine_desc * src = TL_GET( this_coroutine );
    355357        coroutine_desc * dst = get_coroutine(this->runner);
    356358
    357         verify( !preemption_state.enabled );
     359        verify( ! TL_GET( preemption_state ).enabled );
    358360
    359361        create_stack(&dst->stack, dst->stack.size);
    360362        CtxStart(&this->runner, CtxInvokeCoroutine);
    361363
    362         verify( !preemption_state.enabled );
     364        verify( ! TL_GET( preemption_state ).enabled );
    363365
    364366        dst->last = src;
     
    369371
    370372        // set new coroutine that task is executing
    371         this_coroutine = dst;
     373        TL_SET( this_coroutine, dst );
    372374
    373375        // SKULLDUGGERY normally interrupts are enable before leaving a coroutine ctxswitch.
     
    386388        src->state = Active;
    387389
    388         verify( !preemption_state.enabled );
     390        verify( ! TL_GET( preemption_state ).enabled );
    389391}
    390392
     
    392394// Scheduler routines
    393395void ScheduleThread( thread_desc * thrd ) {
    394         // if( !thrd ) return;
     396        // if( ! thrd ) return;
    395397        verify( thrd );
    396398        verify( thrd->self_cor.state != Halted );
    397399
    398         verify( !preemption_state.enabled );
     400        verify( ! TL_GET( preemption_state ).enabled );
    399401
    400402        verifyf( thrd->next == NULL, "Expected null got %p", thrd->next );
    401403
    402         with( *this_processor->cltr ) {
     404        with( *TL_GET( this_processor )->cltr ) {
    403405                lock  ( ready_queue_lock __cfaabi_dbg_ctx2 );
    404406                append( ready_queue, thrd );
     
    406408        }
    407409
    408         verify( !preemption_state.enabled );
     410        verify( ! TL_GET( preemption_state ).enabled );
    409411}
    410412
    411413thread_desc * nextThread(cluster * this) with( *this ) {
    412         verify( !preemption_state.enabled );
     414        verify( ! TL_GET( preemption_state ).enabled );
    413415        lock( ready_queue_lock __cfaabi_dbg_ctx2 );
    414416        thread_desc * head = pop_head( ready_queue );
    415417        unlock( ready_queue_lock );
    416         verify( !preemption_state.enabled );
     418        verify( ! TL_GET( preemption_state ).enabled );
    417419        return head;
    418420}
     
    420422void BlockInternal() {
    421423        disable_interrupts();
    422         verify( !preemption_state.enabled );
     424        verify( ! TL_GET( preemption_state ).enabled );
    423425        returnToKernel();
    424         verify( !preemption_state.enabled );
     426        verify( ! TL_GET( preemption_state ).enabled );
    425427        enable_interrupts( __cfaabi_dbg_ctx );
    426428}
     
    428430void BlockInternal( __spinlock_t * lock ) {
    429431        disable_interrupts();
    430         this_processor->finish.action_code = Release;
    431         this_processor->finish.lock        = lock;
    432 
    433         verify( !preemption_state.enabled );
     432        TL_GET( this_processor )->finish.action_code = Release;
     433        TL_GET( this_processor )->finish.lock        = lock;
     434
     435        verify( ! TL_GET( preemption_state ).enabled );
    434436        returnToKernel();
    435         verify( !preemption_state.enabled );
     437        verify( ! TL_GET( preemption_state ).enabled );
    436438
    437439        enable_interrupts( __cfaabi_dbg_ctx );
     
    440442void BlockInternal( thread_desc * thrd ) {
    441443        disable_interrupts();
    442         this_processor->finish.action_code = Schedule;
    443         this_processor->finish.thrd        = thrd;
    444 
    445         verify( !preemption_state.enabled );
     444        TL_GET( this_processor )->finish.action_code = Schedule;
     445        TL_GET( this_processor )->finish.thrd        = thrd;
     446
     447        verify( ! TL_GET( preemption_state ).enabled );
    446448        returnToKernel();
    447         verify( !preemption_state.enabled );
     449        verify( ! TL_GET( preemption_state ).enabled );
    448450
    449451        enable_interrupts( __cfaabi_dbg_ctx );
     
    453455        assert(thrd);
    454456        disable_interrupts();
    455         this_processor->finish.action_code = Release_Schedule;
    456         this_processor->finish.lock        = lock;
    457         this_processor->finish.thrd        = thrd;
    458 
    459         verify( !preemption_state.enabled );
     457        TL_GET( this_processor )->finish.action_code = Release_Schedule;
     458        TL_GET( this_processor )->finish.lock        = lock;
     459        TL_GET( this_processor )->finish.thrd        = thrd;
     460
     461        verify( ! TL_GET( preemption_state ).enabled );
    460462        returnToKernel();
    461         verify( !preemption_state.enabled );
     463        verify( ! TL_GET( preemption_state ).enabled );
    462464
    463465        enable_interrupts( __cfaabi_dbg_ctx );
     
    466468void BlockInternal(__spinlock_t * locks [], unsigned short count) {
    467469        disable_interrupts();
    468         this_processor->finish.action_code = Release_Multi;
    469         this_processor->finish.locks       = locks;
    470         this_processor->finish.lock_count  = count;
    471 
    472         verify( !preemption_state.enabled );
     470        TL_GET( this_processor )->finish.action_code = Release_Multi;
     471        TL_GET( this_processor )->finish.locks       = locks;
     472        TL_GET( this_processor )->finish.lock_count  = count;
     473
     474        verify( ! TL_GET( preemption_state ).enabled );
    473475        returnToKernel();
    474         verify( !preemption_state.enabled );
     476        verify( ! TL_GET( preemption_state ).enabled );
    475477
    476478        enable_interrupts( __cfaabi_dbg_ctx );
     
    479481void BlockInternal(__spinlock_t * locks [], unsigned short lock_count, thread_desc * thrds [], unsigned short thrd_count) {
    480482        disable_interrupts();
    481         this_processor->finish.action_code = Release_Multi_Schedule;
    482         this_processor->finish.locks       = locks;
    483         this_processor->finish.lock_count  = lock_count;
    484         this_processor->finish.thrds       = thrds;
    485         this_processor->finish.thrd_count  = thrd_count;
    486 
    487         verify( !preemption_state.enabled );
     483        TL_GET( this_processor )->finish.action_code = Release_Multi_Schedule;
     484        TL_GET( this_processor )->finish.locks       = locks;
     485        TL_GET( this_processor )->finish.lock_count  = lock_count;
     486        TL_GET( this_processor )->finish.thrds       = thrds;
     487        TL_GET( this_processor )->finish.thrd_count  = thrd_count;
     488
     489        verify( ! TL_GET( preemption_state ).enabled );
    488490        returnToKernel();
    489         verify( !preemption_state.enabled );
     491        verify( ! TL_GET( preemption_state ).enabled );
    490492
    491493        enable_interrupts( __cfaabi_dbg_ctx );
     
    493495
    494496void LeaveThread(__spinlock_t * lock, thread_desc * thrd) {
    495         verify( !preemption_state.enabled );
    496         this_processor->finish.action_code = thrd ? Release_Schedule : Release;
    497         this_processor->finish.lock        = lock;
    498         this_processor->finish.thrd        = thrd;
     497        verify( ! TL_GET( preemption_state ).enabled );
     498        TL_GET( this_processor )->finish.action_code = thrd ? Release_Schedule : Release;
     499        TL_GET( this_processor )->finish.lock        = lock;
     500        TL_GET( this_processor )->finish.thrd        = thrd;
    499501
    500502        returnToKernel();
     
    507509// Kernel boot procedures
    508510void kernel_startup(void) {
    509         verify( !preemption_state.enabled );
     511        verify( ! TL_GET( preemption_state ).enabled );
    510512        __cfaabi_dbg_print_safe("Kernel : Starting\n");
    511513
     
    531533
    532534        //initialize the global state variables
    533         this_processor = mainProcessor;
    534         this_thread = mainThread;
    535         this_coroutine = &mainThread->self_cor;
     535        TL_SET( this_processor, mainProcessor );
     536        TL_SET( this_thread, mainThread );
     537        TL_SET( this_coroutine, &mainThread->self_cor );
    536538
    537539        // Enable preemption
     
    545547        // context. Hence, the main thread does not begin through CtxInvokeThread, like all other threads. The trick here is that
    546548        // mainThread is on the ready queue when this call is made.
    547         kernel_first_resume( this_processor );
     549        kernel_first_resume( TL_GET( this_processor ) );
    548550
    549551
     
    552554        __cfaabi_dbg_print_safe("Kernel : Started\n--------------------------------------------------\n\n");
    553555
    554         verify( !preemption_state.enabled );
     556        verify( ! TL_GET( preemption_state ).enabled );
    555557        enable_interrupts( __cfaabi_dbg_ctx );
    556         verify( preemption_state.enabled );
     558        verify( TL_GET( preemption_state ).enabled );
    557559}
    558560
     
    560562        __cfaabi_dbg_print_safe("\n--------------------------------------------------\nKernel : Shutting down\n");
    561563
    562         verify( preemption_state.enabled );
     564        verify( TL_GET( preemption_state ).enabled );
    563565        disable_interrupts();
    564         verify( !preemption_state.enabled );
     566        verify( ! TL_GET( preemption_state ).enabled );
    565567
    566568        // SKULLDUGGERY: Notify the mainProcessor it needs to terminates.
     
    602604
    603605        // first task to abort ?
    604         if ( !kernel_abort_called ) {                   // not first task to abort ?
     606        if ( ! kernel_abort_called ) {                  // not first task to abort ?
    605607                kernel_abort_called = true;
    606608                unlock( kernel_abort_lock );
     
    617619        }
    618620
    619         return this_thread;
     621        return TL_GET( this_thread );
    620622}
    621623
     
    626628        __cfaabi_dbg_bits_write( abort_text, len );
    627629
    628         if ( thrd != this_coroutine ) {
    629                 len = snprintf( abort_text, abort_text_size, " in coroutine %.256s (%p).\n", this_coroutine->name, this_coroutine );
     630        if ( get_coroutine(thrd) != TL_GET( this_coroutine ) ) {
     631                len = snprintf( abort_text, abort_text_size, " in coroutine %.256s (%p).\n", TL_GET( this_coroutine )->name, TL_GET( this_coroutine ) );
    630632                __cfaabi_dbg_bits_write( abort_text, len );
    631633        }
     
    636638
    637639int kernel_abort_lastframe( void ) __attribute__ ((__nothrow__)) {
    638         return get_coroutine(this_thread) == get_coroutine(mainThread) ? 4 : 2;
     640        return get_coroutine(TL_GET( this_thread )) == get_coroutine(mainThread) ? 4 : 2;
    639641}
    640642
     
    666668        if ( count < 0 ) {
    667669                // queue current task
    668                 append( waiting, (thread_desc *)this_thread );
     670                append( waiting, (thread_desc *)TL_GET( this_thread ) );
    669671
    670672                // atomically release spin lock and block
  • src/libcfa/concurrency/kernel_private.h

    rb2fe1c9 r32cab5b  
    1010// Created On       : Mon Feb 13 12:27:26 2017
    1111// Last Modified By : Peter A. Buhr
    12 // Last Modified On : Sat Jul 22 09:58:09 2017
    13 // Update Count     : 2
     12// Last Modified On : Thu Mar 29 14:06:40 2018
     13// Update Count     : 3
    1414//
    1515
     
    6666extern event_kernel_t * event_kernel;
    6767
    68 extern thread_local coroutine_desc * volatile this_coroutine;
    69 extern thread_local thread_desc *    volatile this_thread;
    70 extern thread_local processor *      volatile this_processor;
     68//extern thread_local coroutine_desc * volatile this_coroutine;
     69//extern thread_local thread_desc *    volatile this_thread;
     70//extern thread_local processor *      volatile this_processor;
    7171
    7272// extern volatile thread_local bool preemption_in_progress;
  • src/libcfa/concurrency/monitor.c

    rb2fe1c9 r32cab5b  
    1010// Created On       : Thd Feb 23 12:27:26 2017
    1111// Last Modified By : Peter A. Buhr
    12 // Last Modified On : Fri Feb 16 14:49:53 2018
    13 // Update Count     : 5
     12// Last Modified On : Fri Mar 30 14:30:26 2018
     13// Update Count     : 9
    1414//
    1515
     
    8585                // Lock the monitor spinlock
    8686                lock( this->lock __cfaabi_dbg_ctx2 );
    87                 thread_desc * thrd = this_thread;
     87                thread_desc * thrd = TL_GET( this_thread );
    8888
    8989                __cfaabi_dbg_print_safe( "Kernel : %10p Entering mon %p (%p)\n", thrd, this, this->owner);
     
    134134                // Lock the monitor spinlock
    135135                lock( this->lock __cfaabi_dbg_ctx2 );
    136                 thread_desc * thrd = this_thread;
     136                thread_desc * thrd = TL_GET( this_thread );
    137137
    138138                __cfaabi_dbg_print_safe( "Kernel : %10p Entering dtor for mon %p (%p)\n", thrd, this, this->owner);
     
    168168
    169169                        // Create the node specific to this wait operation
    170                         wait_ctx_primed( this_thread, 0 )
     170                        wait_ctx_primed( TL_GET( this_thread ), 0 )
    171171
    172172                        // Some one else has the monitor, wait for him to finish and then run
     
    179179                        __cfaabi_dbg_print_safe( "Kernel :  blocking \n" );
    180180
    181                         wait_ctx( this_thread, 0 )
     181                        wait_ctx( TL_GET( this_thread ), 0 )
    182182                        this->dtor_node = &waiter;
    183183
     
    199199                lock( this->lock __cfaabi_dbg_ctx2 );
    200200
    201                 __cfaabi_dbg_print_safe( "Kernel : %10p Leaving mon %p (%p)\n", this_thread, this, this->owner);
    202 
    203                 verifyf( this_thread == this->owner, "Expected owner to be %p, got %p (r: %i, m: %p)", this_thread, this->owner, this->recursion, this );
     201                __cfaabi_dbg_print_safe( "Kernel : %10p Leaving mon %p (%p)\n", TL_GET( this_thread ), this, this->owner);
     202
     203                verifyf( TL_GET( this_thread ) == this->owner, "Expected owner to be %p, got %p (r: %i, m: %p)", TL_GET( this_thread ), this->owner, this->recursion, this );
    204204
    205205                // Leaving a recursion level, decrement the counter
     
    227227        void __leave_dtor_monitor_desc( monitor_desc * this ) {
    228228                __cfaabi_dbg_debug_do(
    229                         if( this_thread != this->owner ) {
    230                                 abort( "Destroyed monitor %p has inconsistent owner, expected %p got %p.\n", this, this_thread, this->owner);
     229                        if( TL_GET( this_thread ) != this->owner ) {
     230                                abort( "Destroyed monitor %p has inconsistent owner, expected %p got %p.\n", this, TL_GET( this_thread ), this->owner);
    231231                        }
    232232                        if( this->recursion != 1 ) {
     
    297297
    298298        // Save previous thread context
    299         this.prev = this_thread->monitors;
     299        this.prev = TL_GET( this_thread )->monitors;
    300300
    301301        // Update thread context (needed for conditions)
    302         (this_thread->monitors){m, count, func};
     302        (TL_GET( this_thread )->monitors){m, count, func};
    303303
    304304        // __cfaabi_dbg_print_safe( "MGUARD : enter %d\n", count);
     
    322322
    323323        // Restore thread context
    324         this_thread->monitors = this.prev;
     324        TL_GET( this_thread )->monitors = this.prev;
    325325}
    326326
     
    332332
    333333        // Save previous thread context
    334         this.prev = this_thread->monitors;
     334        this.prev = TL_GET( this_thread )->monitors;
    335335
    336336        // Update thread context (needed for conditions)
    337         (this_thread->monitors){m, 1, func};
     337        (TL_GET( this_thread )->monitors){m, 1, func};
    338338
    339339        __enter_monitor_dtor( this.m, func );
     
    346346
    347347        // Restore thread context
    348         this_thread->monitors = this.prev;
     348        TL_GET( this_thread )->monitors = this.prev;
    349349}
    350350
     
    386386
    387387        // Create the node specific to this wait operation
    388         wait_ctx( this_thread, user_info );
     388        wait_ctx( TL_GET( this_thread ), user_info );
    389389
    390390        // Append the current wait operation to the ones already queued on the condition
     
    425425        //Some more checking in debug
    426426        __cfaabi_dbg_debug_do(
    427                 thread_desc * this_thrd = this_thread;
     427                thread_desc * this_thrd = TL_GET( this_thread );
    428428                if ( this.monitor_count != this_thrd->monitors.size ) {
    429429                        abort( "Signal on condition %p made with different number of monitor(s), expected %zi got %zi", &this, this.monitor_count, this_thrd->monitors.size );
     
    473473
    474474        // Create the node specific to this wait operation
    475         wait_ctx_primed( this_thread, 0 )
     475        wait_ctx_primed( TL_GET( this_thread ), 0 )
    476476
    477477        //save contexts
     
    566566
    567567                                // Create the node specific to this wait operation
    568                                 wait_ctx_primed( this_thread, 0 );
     568                                wait_ctx_primed( TL_GET( this_thread ), 0 );
    569569
    570570                                // Save monitor states
     
    612612
    613613        // Create the node specific to this wait operation
    614         wait_ctx_primed( this_thread, 0 );
     614        wait_ctx_primed( TL_GET( this_thread ), 0 );
    615615
    616616        monitor_save;
     
    618618
    619619        for( __lock_size_t i = 0; i < count; i++) {
    620                 verify( monitors[i]->owner == this_thread );
     620                verify( monitors[i]->owner == TL_GET( this_thread ) );
    621621        }
    622622
     
    812812
    813813static inline void brand_condition( condition & this ) {
    814         thread_desc * thrd = this_thread;
     814        thread_desc * thrd = TL_GET( this_thread );
    815815        if( !this.monitors ) {
    816816                // __cfaabi_dbg_print_safe( "Branding\n" );
  • src/libcfa/concurrency/preemption.c

    rb2fe1c9 r32cab5b  
    1010// Created On       : Mon Jun 5 14:20:42 2017
    1111// Last Modified By : Peter A. Buhr
    12 // Last Modified On : Fri Feb  9 16:38:13 2018
    13 // Update Count     : 14
     12// Last Modified On : Mon Apr  9 13:52:39 2018
     13// Update Count     : 36
    1414//
    1515
     
    2323}
    2424
    25 #include "bits/cfatime.h"
    2625#include "bits/signal.h"
    2726
    2827#if !defined(__CFA_DEFAULT_PREEMPTION__)
    29 #define __CFA_DEFAULT_PREEMPTION__ 10`cfa_ms
     28#define __CFA_DEFAULT_PREEMPTION__ 10`ms
    3029#endif
    3130
    32 __cfa_time_t default_preemption() __attribute__((weak)) {
     31Duration default_preemption() __attribute__((weak)) {
    3332        return __CFA_DEFAULT_PREEMPTION__;
    3433}
     
    7877
    7978// Get next expired node
    80 static inline alarm_node_t * get_expired( alarm_list_t * alarms, __cfa_time_t currtime ) {
     79static inline alarm_node_t * get_expired( alarm_list_t * alarms, Time currtime ) {
    8180        if( !alarms->head ) return NULL;                          // If no alarms return null
    8281        if( alarms->head->alarm >= currtime ) return NULL;        // If alarms head not expired return null
     
    8887        alarm_node_t * node = NULL;                     // Used in the while loop but cannot be declared in the while condition
    8988        alarm_list_t * alarms = &event_kernel->alarms;  // Local copy for ease of reading
    90         __cfa_time_t currtime = __kernel_get_time();    // Check current time once so we everything "happens at once"
     89        Time currtime = __kernel_get_time();                    // Check current time once so we everything "happens at once"
    9190
    9291        //Loop throught every thing expired
     
    102101
    103102                // Check if this is a periodic alarm
    104                 __cfa_time_t period = node->period;
     103                Duration period = node->period;
    105104                if( period > 0 ) {
    106105                        node->alarm = currtime + period;    // Alarm is periodic, add currtime to it (used cached current time)
     
    117116
    118117// Update the preemption of a processor and notify interested parties
    119 void update_preemption( processor * this, __cfa_time_t duration ) {
     118void update_preemption( processor * this, Duration duration ) {
    120119        alarm_node_t * alarm = this->preemption_alarm;
    121120
    122121        // Alarms need to be enabled
    123         if ( duration > 0 && !alarm->set ) {
     122        if ( duration > 0 && ! alarm->set ) {
    124123                alarm->alarm = __kernel_get_time() + duration;
    125124                alarm->period = duration;
    126125                register_self( alarm );
    127126        }
    128         // Zero duraction but alarm is set
     127        // Zero duration but alarm is set
    129128        else if ( duration == 0 && alarm->set ) {
    130129                unregister_self( alarm );
     
    150149        // Disable interrupts by incrementing the counter
    151150        void disable_interrupts() {
    152                 preemption_state.enabled = false;
    153                 __attribute__((unused)) unsigned short new_val = preemption_state.disable_count + 1;
    154                 preemption_state.disable_count = new_val;
     151                TL_GET( preemption_state ).enabled = false;
     152                __attribute__((unused)) unsigned short new_val = TL_GET( preemption_state ).disable_count + 1;
     153                TL_GET( preemption_state ).disable_count = new_val;
    155154                verify( new_val < 65_000u );              // If this triggers someone is disabling interrupts without enabling them
    156155        }
     
    159158        // If counter reaches 0, execute any pending CtxSwitch
    160159        void enable_interrupts( __cfaabi_dbg_ctx_param ) {
    161                 processor   * proc = this_processor;      // Cache the processor now since interrupts can start happening after the atomic add
    162                 thread_desc * thrd = this_thread;         // Cache the thread now since interrupts can start happening after the atomic add
    163 
    164                 unsigned short prev = preemption_state.disable_count;
    165                 preemption_state.disable_count -= 1;
     160                processor   * proc = TL_GET( this_processor ); // Cache the processor now since interrupts can start happening after the atomic add
     161                thread_desc * thrd = TL_GET( this_thread );       // Cache the thread now since interrupts can start happening after the atomic add
     162
     163                unsigned short prev = TL_GET( preemption_state ).disable_count;
     164                TL_GET( preemption_state ).disable_count -= 1;
    166165                verify( prev != 0u );                     // If this triggers someone is enabled already enabled interruptsverify( prev != 0u );
    167166
    168167                // Check if we need to prempt the thread because an interrupt was missed
    169168                if( prev == 1 ) {
    170                         preemption_state.enabled = true;
     169                        TL_GET( preemption_state ).enabled = true;
    171170                        if( proc->pending_preemption ) {
    172171                                proc->pending_preemption = false;
     
    182181        // Don't execute any pending CtxSwitch even if counter reaches 0
    183182        void enable_interrupts_noPoll() {
    184                 unsigned short prev = preemption_state.disable_count;
    185                 preemption_state.disable_count -= 1;
     183                unsigned short prev = TL_GET( preemption_state ).disable_count;
     184                TL_GET( preemption_state ).disable_count -= 1;
    186185                verifyf( prev != 0u, "Incremented from %u\n", prev );                     // If this triggers someone is enabled already enabled interrupts
    187186                if( prev == 1 ) {
    188                         preemption_state.enabled = true;
     187                        TL_GET( preemption_state ).enabled = true;
    189188                }
    190189        }
     
    236235// If false : preemption is unsafe and marked as pending
    237236static inline bool preemption_ready() {
    238         bool ready = preemption_state.enabled && !preemption_state.in_progress; // Check if preemption is safe
    239         this_processor->pending_preemption = !ready;                        // Adjust the pending flag accordingly
     237        bool ready = TL_GET( preemption_state ).enabled && !TL_GET( preemption_state ).in_progress; // Check if preemption is safe
     238        TL_GET( this_processor )->pending_preemption = !ready;                  // Adjust the pending flag accordingly
    240239        return ready;
    241240}
     
    251250
    252251        // Start with preemption disabled until ready
    253         preemption_state.enabled = false;
    254         preemption_state.disable_count = 1;
     252        TL_GET( preemption_state ).enabled = false;
     253        TL_GET( preemption_state ).disable_count = 1;
    255254
    256255        // Initialize the event kernel
     
    291290// Used by thread to control when they want to receive preemption signals
    292291void ?{}( preemption_scope & this, processor * proc ) {
    293         (this.alarm){ proc, 0`cfa_s, 0`cfa_s };
     292        (this.alarm){ proc, (Time){ 0 }, 0`s };
    294293        this.proc = proc;
    295294        this.proc->preemption_alarm = &this.alarm;
     
    301300        disable_interrupts();
    302301
    303         update_preemption( this.proc, 0`cfa_s );
     302        update_preemption( this.proc, 0`s );
    304303}
    305304
     
    317316        // before the kernel thread has even started running. When that happens an iterrupt
    318317        // we a null 'this_processor' will be caught, just ignore it.
    319         if(!this_processor) return;
     318        if(!TL_GET( this_processor )) return;
    320319
    321320        choose(sfp->si_value.sival_int) {
    322321                case PREEMPT_NORMAL   : ;// Normal case, nothing to do here
    323                 case PREEMPT_TERMINATE: verify(this_processor->do_terminate);
     322                case PREEMPT_TERMINATE: verify(TL_GET( this_processor )->do_terminate);
    324323                default:
    325324                        abort( "internal error, signal value is %d", sfp->si_value.sival_int );
     
    331330        __cfaabi_dbg_print_buffer_decl( " KERNEL: preempting core %p (%p).\n", this_processor, this_thread);
    332331
    333         preemption_state.in_progress = true;                      // Sync flag : prevent recursive calls to the signal handler
     332        TL_GET( preemption_state ).in_progress = true;  // Sync flag : prevent recursive calls to the signal handler
    334333        signal_unblock( SIGUSR1 );                          // We are about to CtxSwitch out of the signal handler, let other handlers in
    335         preemption_state.in_progress = false;                    // Clear the in progress flag
     334        TL_GET( preemption_state ).in_progress = false; // Clear the in progress flag
    336335
    337336        // Preemption can occur here
    338337
    339         BlockInternal( (thread_desc*)this_thread );        // Do the actual CtxSwitch
     338        BlockInternal( (thread_desc*)TL_GET( this_thread ) ); // Do the actual CtxSwitch
    340339}
    341340
  • src/libcfa/concurrency/preemption.h

    rb2fe1c9 r32cab5b  
    1010// Created On       : Mon Jun 5 14:20:42 2017
    1111// Last Modified By : Peter A. Buhr
    12 // Last Modified On : Fri Jul 21 22:34:25 2017
    13 // Update Count     : 1
     12// Last Modified On : Fri Mar 23 17:18:53 2018
     13// Update Count     : 2
    1414//
    1515
     
    2121void kernel_start_preemption();
    2222void kernel_stop_preemption();
    23 void update_preemption( processor * this, __cfa_time_t duration );
     23void update_preemption( processor * this, Duration duration );
    2424void tick_preemption();
    2525
  • src/libcfa/concurrency/thread

    rb2fe1c9 r32cab5b  
    1010// Created On       : Tue Jan 17 12:27:26 2017
    1111// Last Modified By : Peter A. Buhr
    12 // Last Modified On : Sat Jul 22 09:59:40 2017
    13 // Update Count     : 3
     12// Last Modified On : Thu Mar 29 14:07:11 2018
     13// Update Count     : 4
    1414//
    1515
     
    5252}
    5353
    54 extern thread_local thread_desc * volatile this_thread;
     54//extern thread_local thread_desc * volatile this_thread;
    5555
    5656forall( dtype T | is_thread(T) )
  • src/libcfa/concurrency/thread.c

    rb2fe1c9 r32cab5b  
    1010// Created On       : Tue Jan 17 12:27:26 2017
    1111// Last Modified By : Peter A. Buhr
    12 // Last Modified On : Fri Jul 21 22:34:46 2017
    13 // Update Count     : 1
     12// Last Modified On : Fri Mar 30 17:19:52 2018
     13// Update Count     : 8
    1414//
    1515
     
    2626}
    2727
    28 extern volatile thread_local processor * this_processor;
     28//extern volatile thread_local processor * this_processor;
    2929
    3030//-----------------------------------------------------------------------------
     
    7575        coroutine_desc* thrd_c = get_coroutine(this);
    7676        thread_desc   * thrd_h = get_thread   (this);
    77         thrd_c->last = this_coroutine;
     77        thrd_c->last = TL_GET( this_coroutine );
    7878
    7979        // __cfaabi_dbg_print_safe("Thread start : %p (t %p, c %p)\n", this, thrd_c, thrd_h);
     
    8181        disable_interrupts();
    8282        create_stack(&thrd_c->stack, thrd_c->stack.size);
    83         this_coroutine = thrd_c;
     83        TL_SET( this_coroutine, thrd_c );
    8484        CtxStart(&this, CtxInvokeThread);
    8585        assert( thrd_c->last->stack.context );
     
    9292extern "C" {
    9393        void __finish_creation(void) {
    94                 coroutine_desc* thrd_c = this_coroutine;
     94                coroutine_desc* thrd_c = TL_GET( this_coroutine );
    9595                ThreadCtxSwitch( thrd_c, thrd_c->last );
    9696        }
     
    9898
    9999void yield( void ) {
    100         verify( preemption_state.enabled );
    101         BlockInternal( this_thread );
    102         verify( preemption_state.enabled );
     100        verify( TL_GET( preemption_state ).enabled );
     101        BlockInternal( TL_GET( this_thread ) );
     102        verify( TL_GET( preemption_state ).enabled );
    103103}
    104104
     
    116116        // set new coroutine that the processor is executing
    117117        // and context switch to it
    118         this_coroutine = dst;
     118        TL_SET( this_coroutine, dst );
    119119        assert( src->stack.context );
    120120        CtxSwitch( src->stack.context, dst->stack.context );
    121         this_coroutine = src;
     121        TL_SET( this_coroutine, src );
    122122
    123123        // set state of new coroutine to active
  • src/libcfa/iostream

    rb2fe1c9 r32cab5b  
    1010// Created On       : Wed May 27 17:56:53 2015
    1111// Last Modified By : Peter A. Buhr
    12 // Last Modified On : Thu Jan 25 13:08:39 2018
    13 // Update Count     : 149
     12// Last Modified On : Thu Apr 12 14:34:37 2018
     13// Update Count     : 150
    1414//
    1515
     
    159159forall( dtype istype | istream( istype ) ) istype & ?|?( istype &, _Istream_cstrC );
    160160
     161
     162#include <time_t.h>                                                                             // Duration (constructors) / Time (constructors)
     163
     164forall( dtype ostype | ostream( ostype ) ) ostype & ?|?( ostype & os, Duration dur );
     165forall( dtype ostype | ostream( ostype ) ) ostype & ?|?( ostype & os, Time time );
     166
     167
    161168// Local Variables: //
    162169// mode: c //
  • src/libcfa/stdlib.c

    rb2fe1c9 r32cab5b  
    9999        char * eeptr;
    100100        re = strtof( sptr, &eeptr );
    101         if ( sptr == *eeptr ) { if ( eptr != 0 ) *eptr = eeptr; return 0.0f + 0.0f * _Complex_I; }
     101        if ( sptr == eeptr ) { if ( eptr != 0 ) *eptr = eeptr; return 0.0f + 0.0f * _Complex_I; }
    102102        im = strtof( eeptr, &eeptr );
    103         if ( sptr == *eeptr ) { if ( eptr != 0 ) *eptr = eeptr; return 0.0f + 0.0f * _Complex_I; }
     103        if ( sptr == eeptr ) { if ( eptr != 0 ) *eptr = eeptr; return 0.0f + 0.0f * _Complex_I; }
    104104        if ( *eeptr != 'i' ) { if ( eptr != 0 ) *eptr = eeptr; return 0.0f + 0.0f * _Complex_I; }
    105105        return re + im * _Complex_I;
     
    110110        char * eeptr;
    111111        re = strtod( sptr, &eeptr );
    112         if ( sptr == *eeptr ) { if ( eptr != 0 ) *eptr = eeptr; return 0.0 + 0.0 * _Complex_I; }
     112        if ( sptr == eeptr ) { if ( eptr != 0 ) *eptr = eeptr; return 0.0 + 0.0 * _Complex_I; }
    113113        im = strtod( eeptr, &eeptr );
    114         if ( sptr == *eeptr ) { if ( eptr != 0 ) *eptr = eeptr; return 0.0 + 0.0 * _Complex_I; }
     114        if ( sptr == eeptr ) { if ( eptr != 0 ) *eptr = eeptr; return 0.0 + 0.0 * _Complex_I; }
    115115        if ( *eeptr != 'i' ) { if ( eptr != 0 ) *eptr = eeptr; return 0.0 + 0.0 * _Complex_I; }
    116116        return re + im * _Complex_I;
     
    121121        char * eeptr;
    122122        re = strtold( sptr, &eeptr );
    123         if ( sptr == *eeptr ) { if ( eptr != 0 ) *eptr = eeptr; return 0.0L + 0.0L * _Complex_I; }
     123        if ( sptr == eeptr ) { if ( eptr != 0 ) *eptr = eeptr; return 0.0L + 0.0L * _Complex_I; }
    124124        im = strtold( eeptr, &eeptr );
    125         if ( sptr == *eeptr ) { if ( eptr != 0 ) *eptr = eeptr; return 0.0L + 0.0L * _Complex_I; }
     125        if ( sptr == eeptr ) { if ( eptr != 0 ) *eptr = eeptr; return 0.0L + 0.0L * _Complex_I; }
    126126        if ( *eeptr != 'i' ) { if ( eptr != 0 ) *eptr = eeptr; return 0.0L + 0.0L * _Complex_I; }
    127127        return re + im * _Complex_I;
  • src/tests/.expect/attributes.x64.txt

    rb2fe1c9 r32cab5b  
    33    L: __attribute__ ((unused)) ((void)1);
    44}
    5 __attribute__ ((unused)) struct __anonymous0 {
     5struct __attribute__ ((unused)) __anonymous0 {
    66};
    77static inline void ___constructor__F_R13s__anonymous0_autogen___1(struct __anonymous0 *___dst__R13s__anonymous0_1);
     
    2020    return ___ret__13s__anonymous0_1;
    2121}
    22 __attribute__ ((unused)) struct Agn1;
    23 __attribute__ ((unused)) struct Agn2 {
     22struct __attribute__ ((unused)) Agn1;
     23struct __attribute__ ((unused)) Agn2 {
    2424};
    2525static inline void ___constructor__F_R5sAgn2_autogen___1(struct Agn2 *___dst__R5sAgn2_1);
     
    4545    __E2__C5eAgn3_1,
    4646};
    47 __attribute__ ((unused)) struct __anonymous2;
    48 __attribute__ ((unused)) struct __anonymous3;
     47struct __attribute__ ((unused)) __anonymous2;
     48struct __attribute__ ((unused)) __anonymous3;
    4949struct Fdl {
    5050    __attribute__ ((unused)) signed int __f1__i_1;
     
    314314    ((void)sizeof(__attribute__ ((unused,unused,unused)) signed int (*)[10]));
    315315    ((void)sizeof(__attribute__ ((unused,unused,unused)) signed int ()));
    316     __attribute__ ((unused)) struct __anonymous4 {
     316    struct __attribute__ ((unused)) __anonymous4 {
    317317        signed int __i__i_2;
    318318    };
  • src/tests/.expect/attributes.x86.txt

    rb2fe1c9 r32cab5b  
    33    L: __attribute__ ((unused)) ((void)1);
    44}
    5 __attribute__ ((unused)) struct __anonymous0 {
     5struct __attribute__ ((unused)) __anonymous0 {
    66};
    77static inline void ___constructor__F_R13s__anonymous0_autogen___1(struct __anonymous0 *___dst__R13s__anonymous0_1);
     
    2020    return ___ret__13s__anonymous0_1;
    2121}
    22 __attribute__ ((unused)) struct Agn1;
    23 __attribute__ ((unused)) struct Agn2 {
     22struct __attribute__ ((unused)) Agn1;
     23struct __attribute__ ((unused)) Agn2 {
    2424};
    2525static inline void ___constructor__F_R5sAgn2_autogen___1(struct Agn2 *___dst__R5sAgn2_1);
     
    4545    __E2__C5eAgn3_1,
    4646};
    47 __attribute__ ((unused)) struct __anonymous2;
    48 __attribute__ ((unused)) struct __anonymous3;
     47struct __attribute__ ((unused)) __anonymous2;
     48struct __attribute__ ((unused)) __anonymous3;
    4949struct Fdl {
    5050    __attribute__ ((unused)) signed int __f1__i_1;
     
    314314    ((void)sizeof(__attribute__ ((unused,unused,unused)) signed int (*)[10]));
    315315    ((void)sizeof(__attribute__ ((unused,unused,unused)) signed int ()));
    316     __attribute__ ((unused)) struct __anonymous4 {
     316    struct __attribute__ ((unused)) __anonymous4 {
    317317        signed int __i__i_2;
    318318    };
  • src/tests/.expect/literals.x64.txt

    rb2fe1c9 r32cab5b  
    122122struct _Istream_cstrC __cstr__F15s_Istream_cstrC_Pci__1(char *__anonymous_object1340, signed int __size__i_1);
    123123void *___operator_bitor__A0_1_0_0___fail__PFi_Rd0___eof__PFi_Rd0___open__PF_Rd0PCc___close__PF_Rd0___read__PFRd0_Rd0PcUl___ungetc__PFRd0_Rd0c___fmt__PFi_Rd0PCc__FRd0_Rd015s_Istream_cstrC__1(__attribute__ ((unused)) signed int (*__fail__PFi_R7tistype__1)(void *__anonymous_object1341), __attribute__ ((unused)) signed int (*__eof__PFi_R7tistype__1)(void *__anonymous_object1342), __attribute__ ((unused)) void (*__open__PF_R7tistypePCc__1)(void *__is__R7tistype_1, const char *__name__PCc_1), __attribute__ ((unused)) void (*__close__PF_R7tistype__1)(void *__is__R7tistype_1), __attribute__ ((unused)) void *(*__read__PFR7tistype_R7tistypePcUl__1)(void *__anonymous_object1343, char *__anonymous_object1344, unsigned long int __anonymous_object1345), __attribute__ ((unused)) void *(*__ungetc__PFR7tistype_R7tistypec__1)(void *__anonymous_object1346, char __anonymous_object1347), __attribute__ ((unused)) signed int (*__fmt__PFi_R7tistypePCc__1)(void *__anonymous_object1348, const char *__fmt__PCc_1, ...), void *__anonymous_object1349, struct _Istream_cstrC __anonymous_object1350);
     124struct Duration {
     125    signed long int __tv__l_1;
     126};
     127static inline void ___constructor__F_R9sDuration_autogen___1(struct Duration *___dst__R9sDuration_1);
     128static inline void ___constructor__F_R9sDuration9sDuration_autogen___1(struct Duration *___dst__R9sDuration_1, struct Duration ___src__9sDuration_1);
     129static inline void ___destructor__F_R9sDuration_autogen___1(struct Duration *___dst__R9sDuration_1);
     130static inline struct Duration ___operator_assign__F9sDuration_R9sDuration9sDuration_autogen___1(struct Duration *___dst__R9sDuration_1, struct Duration ___src__9sDuration_1);
     131static inline void ___constructor__F_R9sDurationl_autogen___1(struct Duration *___dst__R9sDuration_1, signed long int __tv__l_1);
     132static inline void ___constructor__F_R9sDuration_autogen___1(struct Duration *___dst__R9sDuration_1){
     133    ((void)((*___dst__R9sDuration_1).__tv__l_1) /* ?{} */);
     134}
     135static inline void ___constructor__F_R9sDuration9sDuration_autogen___1(struct Duration *___dst__R9sDuration_1, struct Duration ___src__9sDuration_1){
     136    ((void)((*___dst__R9sDuration_1).__tv__l_1=___src__9sDuration_1.__tv__l_1) /* ?{} */);
     137}
     138static inline void ___destructor__F_R9sDuration_autogen___1(struct Duration *___dst__R9sDuration_1){
     139    ((void)((*___dst__R9sDuration_1).__tv__l_1) /* ^?{} */);
     140}
     141static inline struct Duration ___operator_assign__F9sDuration_R9sDuration9sDuration_autogen___1(struct Duration *___dst__R9sDuration_1, struct Duration ___src__9sDuration_1){
     142    struct Duration ___ret__9sDuration_1;
     143    ((void)((*___dst__R9sDuration_1).__tv__l_1=___src__9sDuration_1.__tv__l_1));
     144    ((void)___constructor__F_R9sDuration9sDuration_autogen___1((&___ret__9sDuration_1), (*___dst__R9sDuration_1)));
     145    return ___ret__9sDuration_1;
     146}
     147static inline void ___constructor__F_R9sDurationl_autogen___1(struct Duration *___dst__R9sDuration_1, signed long int __tv__l_1){
     148    ((void)((*___dst__R9sDuration_1).__tv__l_1=__tv__l_1) /* ?{} */);
     149}
     150static inline void ___constructor__F_R9sDuration__1(struct Duration *__dur__R9sDuration_1){
     151    ((void)((*__dur__R9sDuration_1).__tv__l_1) /* ?{} */);
     152    ((void)((*__dur__R9sDuration_1).__tv__l_1=((signed long int )0)));
     153}
     154static inline void ___constructor__F_R9sDurationZ__1(struct Duration *__dur__R9sDuration_1, long int __anonymous_object1351){
     155    ((void)((*__dur__R9sDuration_1).__tv__l_1) /* ?{} */);
     156    ((void)((*__dur__R9sDuration_1).__tv__l_1=((signed long int )0)));
     157}
     158struct Time {
     159    unsigned long int __tv__Ul_1;
     160};
     161static inline void ___constructor__F_R5sTime_autogen___1(struct Time *___dst__R5sTime_1);
     162static inline void ___constructor__F_R5sTime5sTime_autogen___1(struct Time *___dst__R5sTime_1, struct Time ___src__5sTime_1);
     163static inline void ___destructor__F_R5sTime_autogen___1(struct Time *___dst__R5sTime_1);
     164static inline struct Time ___operator_assign__F5sTime_R5sTime5sTime_autogen___1(struct Time *___dst__R5sTime_1, struct Time ___src__5sTime_1);
     165static inline void ___constructor__F_R5sTimeUl_autogen___1(struct Time *___dst__R5sTime_1, unsigned long int __tv__Ul_1);
     166static inline void ___constructor__F_R5sTime_autogen___1(struct Time *___dst__R5sTime_1){
     167    ((void)((*___dst__R5sTime_1).__tv__Ul_1) /* ?{} */);
     168}
     169static inline void ___constructor__F_R5sTime5sTime_autogen___1(struct Time *___dst__R5sTime_1, struct Time ___src__5sTime_1){
     170    ((void)((*___dst__R5sTime_1).__tv__Ul_1=___src__5sTime_1.__tv__Ul_1) /* ?{} */);
     171}
     172static inline void ___destructor__F_R5sTime_autogen___1(struct Time *___dst__R5sTime_1){
     173    ((void)((*___dst__R5sTime_1).__tv__Ul_1) /* ^?{} */);
     174}
     175static inline struct Time ___operator_assign__F5sTime_R5sTime5sTime_autogen___1(struct Time *___dst__R5sTime_1, struct Time ___src__5sTime_1){
     176    struct Time ___ret__5sTime_1;
     177    ((void)((*___dst__R5sTime_1).__tv__Ul_1=___src__5sTime_1.__tv__Ul_1));
     178    ((void)___constructor__F_R5sTime5sTime_autogen___1((&___ret__5sTime_1), (*___dst__R5sTime_1)));
     179    return ___ret__5sTime_1;
     180}
     181static inline void ___constructor__F_R5sTimeUl_autogen___1(struct Time *___dst__R5sTime_1, unsigned long int __tv__Ul_1){
     182    ((void)((*___dst__R5sTime_1).__tv__Ul_1=__tv__Ul_1) /* ?{} */);
     183}
     184static inline void ___constructor__F_R5sTime__1(struct Time *__time__R5sTime_1){
     185    ((void)((*__time__R5sTime_1).__tv__Ul_1) /* ?{} */);
     186    ((void)((*__time__R5sTime_1).__tv__Ul_1=((unsigned long int )0)));
     187}
     188static inline void ___constructor__F_R5sTimeZ__1(struct Time *__time__R5sTime_1, long int __anonymous_object1352){
     189    ((void)((*__time__R5sTime_1).__tv__Ul_1) /* ?{} */);
     190    ((void)((*__time__R5sTime_1).__tv__Ul_1=((unsigned long int )0)));
     191}
     192void *___operator_bitor__A0_1_0_0___sepPrt__PFb_Rd0___sepReset__PF_Rd0___sepReset__PF_Rd0b___sepGetCur__PFPCc_Rd0___sepSetCur__PF_Rd0PCc___getNL__PFb_Rd0___setNL__PF_Rd0b___sepOn__PF_Rd0___sepOff__PF_Rd0___sepDisable__PFb_Rd0___sepEnable__PFb_Rd0___sepGet__PFPCc_Rd0___sepSet__PF_Rd0PCc___sepGetTuple__PFPCc_Rd0___sepSetTuple__PF_Rd0PCc___fail__PFi_Rd0___flush__PFi_Rd0___open__PF_Rd0PCcPCc___close__PF_Rd0___write__PFRd0_Rd0PCcUl___fmt__PFi_Rd0PCc__FRd0_Rd09sDuration__1(__attribute__ ((unused)) _Bool (*__sepPrt__PFb_R7tostype__1)(void *__anonymous_object1353), __attribute__ ((unused)) void (*__sepReset__PF_R7tostype__1)(void *__anonymous_object1354), __attribute__ ((unused)) void (*__sepReset__PF_R7tostypeb__1)(void *__anonymous_object1355, _Bool __anonymous_object1356), __attribute__ ((unused)) const char *(*__sepGetCur__PFPCc_R7tostype__1)(void *__anonymous_object1357), __attribute__ ((unused)) void (*__sepSetCur__PF_R7tostypePCc__1)(void *__anonymous_object1358, const char *__anonymous_object1359), __attribute__ ((unused)) _Bool (*__getNL__PFb_R7tostype__1)(void *__anonymous_object1360), __attribute__ ((unused)) void (*__setNL__PF_R7tostypeb__1)(void *__anonymous_object1361, _Bool __anonymous_object1362), __attribute__ ((unused)) void (*__sepOn__PF_R7tostype__1)(void *__anonymous_object1363), __attribute__ ((unused)) void (*__sepOff__PF_R7tostype__1)(void *__anonymous_object1364), __attribute__ ((unused)) _Bool (*__sepDisable__PFb_R7tostype__1)(void *__anonymous_object1365), __attribute__ ((unused)) _Bool (*__sepEnable__PFb_R7tostype__1)(void *__anonymous_object1366), __attribute__ ((unused)) const char *(*__sepGet__PFPCc_R7tostype__1)(void *__anonymous_object1367), __attribute__ ((unused)) void (*__sepSet__PF_R7tostypePCc__1)(void *__anonymous_object1368, const char *__anonymous_object1369), __attribute__ ((unused)) const char *(*__sepGetTuple__PFPCc_R7tostype__1)(void *__anonymous_object1370), __attribute__ ((unused)) void (*__sepSetTuple__PF_R7tostypePCc__1)(void *__anonymous_object1371, const char *__anonymous_object1372), __attribute__ ((unused)) signed int (*__fail__PFi_R7tostype__1)(void *__anonymous_object1373), __attribute__ ((unused)) signed int (*__flush__PFi_R7tostype__1)(void *__anonymous_object1374), __attribute__ ((unused)) void (*__open__PF_R7tostypePCcPCc__1)(void *__os__R7tostype_1, const char *__name__PCc_1, const char *__mode__PCc_1), __attribute__ ((unused)) void (*__close__PF_R7tostype__1)(void *__os__R7tostype_1), __attribute__ ((unused)) void *(*__write__PFR7tostype_R7tostypePCcUl__1)(void *__anonymous_object1375, const char *__anonymous_object1376, unsigned long int __anonymous_object1377), __attribute__ ((unused)) signed int (*__fmt__PFi_R7tostypePCc__1)(void *__anonymous_object1378, const char *__fmt__PCc_1, ...), void *__os__R7tostype_1, struct Duration __dur__9sDuration_1);
     193void *___operator_bitor__A0_1_0_0___sepPrt__PFb_Rd0___sepReset__PF_Rd0___sepReset__PF_Rd0b___sepGetCur__PFPCc_Rd0___sepSetCur__PF_Rd0PCc___getNL__PFb_Rd0___setNL__PF_Rd0b___sepOn__PF_Rd0___sepOff__PF_Rd0___sepDisable__PFb_Rd0___sepEnable__PFb_Rd0___sepGet__PFPCc_Rd0___sepSet__PF_Rd0PCc___sepGetTuple__PFPCc_Rd0___sepSetTuple__PF_Rd0PCc___fail__PFi_Rd0___flush__PFi_Rd0___open__PF_Rd0PCcPCc___close__PF_Rd0___write__PFRd0_Rd0PCcUl___fmt__PFi_Rd0PCc__FRd0_Rd05sTime__1(__attribute__ ((unused)) _Bool (*__sepPrt__PFb_R7tostype__1)(void *__anonymous_object1379), __attribute__ ((unused)) void (*__sepReset__PF_R7tostype__1)(void *__anonymous_object1380), __attribute__ ((unused)) void (*__sepReset__PF_R7tostypeb__1)(void *__anonymous_object1381, _Bool __anonymous_object1382), __attribute__ ((unused)) const char *(*__sepGetCur__PFPCc_R7tostype__1)(void *__anonymous_object1383), __attribute__ ((unused)) void (*__sepSetCur__PF_R7tostypePCc__1)(void *__anonymous_object1384, const char *__anonymous_object1385), __attribute__ ((unused)) _Bool (*__getNL__PFb_R7tostype__1)(void *__anonymous_object1386), __attribute__ ((unused)) void (*__setNL__PF_R7tostypeb__1)(void *__anonymous_object1387, _Bool __anonymous_object1388), __attribute__ ((unused)) void (*__sepOn__PF_R7tostype__1)(void *__anonymous_object1389), __attribute__ ((unused)) void (*__sepOff__PF_R7tostype__1)(void *__anonymous_object1390), __attribute__ ((unused)) _Bool (*__sepDisable__PFb_R7tostype__1)(void *__anonymous_object1391), __attribute__ ((unused)) _Bool (*__sepEnable__PFb_R7tostype__1)(void *__anonymous_object1392), __attribute__ ((unused)) const char *(*__sepGet__PFPCc_R7tostype__1)(void *__anonymous_object1393), __attribute__ ((unused)) void (*__sepSet__PF_R7tostypePCc__1)(void *__anonymous_object1394, const char *__anonymous_object1395), __attribute__ ((unused)) const char *(*__sepGetTuple__PFPCc_R7tostype__1)(void *__anonymous_object1396), __attribute__ ((unused)) void (*__sepSetTuple__PF_R7tostypePCc__1)(void *__anonymous_object1397, const char *__anonymous_object1398), __attribute__ ((unused)) signed int (*__fail__PFi_R7tostype__1)(void *__anonymous_object1399), __attribute__ ((unused)) signed int (*__flush__PFi_R7tostype__1)(void *__anonymous_object1400), __attribute__ ((unused)) void (*__open__PF_R7tostypePCcPCc__1)(void *__os__R7tostype_1, const char *__name__PCc_1, const char *__mode__PCc_1), __attribute__ ((unused)) void (*__close__PF_R7tostype__1)(void *__os__R7tostype_1), __attribute__ ((unused)) void *(*__write__PFR7tostype_R7tostypePCcUl__1)(void *__anonymous_object1401, const char *__anonymous_object1402, unsigned long int __anonymous_object1403), __attribute__ ((unused)) signed int (*__fmt__PFi_R7tostypePCc__1)(void *__anonymous_object1404, const char *__fmt__PCc_1, ...), void *__os__R7tostype_1, struct Time __time__5sTime_1);
    124194enum __anonymous0 {
    125195    __sepSize__C13e__anonymous0_1 = 16,
     
    401471
    402472}
    403 _Bool __sepPrt__Fb_R9sofstream__1(struct ofstream *__anonymous_object1351);
    404 void __sepReset__F_R9sofstream__1(struct ofstream *__anonymous_object1352);
    405 void __sepReset__F_R9sofstreamb__1(struct ofstream *__anonymous_object1353, _Bool __anonymous_object1354);
    406 const char *__sepGetCur__FPCc_R9sofstream__1(struct ofstream *__anonymous_object1355);
    407 void __sepSetCur__F_R9sofstreamPCc__1(struct ofstream *__anonymous_object1356, const char *__anonymous_object1357);
    408 _Bool __getNL__Fb_R9sofstream__1(struct ofstream *__anonymous_object1358);
    409 void __setNL__F_R9sofstreamb__1(struct ofstream *__anonymous_object1359, _Bool __anonymous_object1360);
    410 void __sepOn__F_R9sofstream__1(struct ofstream *__anonymous_object1361);
    411 void __sepOff__F_R9sofstream__1(struct ofstream *__anonymous_object1362);
    412 _Bool __sepDisable__Fb_R9sofstream__1(struct ofstream *__anonymous_object1363);
    413 _Bool __sepEnable__Fb_R9sofstream__1(struct ofstream *__anonymous_object1364);
    414 const char *__sepGet__FPCc_R9sofstream__1(struct ofstream *__anonymous_object1365);
    415 void __sepSet__F_R9sofstreamPCc__1(struct ofstream *__anonymous_object1366, const char *__anonymous_object1367);
    416 const char *__sepGetTuple__FPCc_R9sofstream__1(struct ofstream *__anonymous_object1368);
    417 void __sepSetTuple__F_R9sofstreamPCc__1(struct ofstream *__anonymous_object1369, const char *__anonymous_object1370);
    418 signed int __fail__Fi_R9sofstream__1(struct ofstream *__anonymous_object1371);
    419 signed int __flush__Fi_R9sofstream__1(struct ofstream *__anonymous_object1372);
    420 void __open__F_R9sofstreamPCcPCc__1(struct ofstream *__anonymous_object1373, const char *__name__PCc_1, const char *__mode__PCc_1);
    421 void __open__F_R9sofstreamPCc__1(struct ofstream *__anonymous_object1374, const char *__name__PCc_1);
    422 void __close__F_R9sofstream__1(struct ofstream *__anonymous_object1375);
    423 struct ofstream *__write__FR9sofstream_R9sofstreamPCcUl__1(struct ofstream *__anonymous_object1376, const char *__data__PCc_1, unsigned long int __size__Ul_1);
    424 signed int __fmt__Fi_R9sofstreamPCc__1(struct ofstream *__anonymous_object1377, const char *__fmt__PCc_1, ...);
     473_Bool __sepPrt__Fb_R9sofstream__1(struct ofstream *__anonymous_object1405);
     474void __sepReset__F_R9sofstream__1(struct ofstream *__anonymous_object1406);
     475void __sepReset__F_R9sofstreamb__1(struct ofstream *__anonymous_object1407, _Bool __anonymous_object1408);
     476const char *__sepGetCur__FPCc_R9sofstream__1(struct ofstream *__anonymous_object1409);
     477void __sepSetCur__F_R9sofstreamPCc__1(struct ofstream *__anonymous_object1410, const char *__anonymous_object1411);
     478_Bool __getNL__Fb_R9sofstream__1(struct ofstream *__anonymous_object1412);
     479void __setNL__F_R9sofstreamb__1(struct ofstream *__anonymous_object1413, _Bool __anonymous_object1414);
     480void __sepOn__F_R9sofstream__1(struct ofstream *__anonymous_object1415);
     481void __sepOff__F_R9sofstream__1(struct ofstream *__anonymous_object1416);
     482_Bool __sepDisable__Fb_R9sofstream__1(struct ofstream *__anonymous_object1417);
     483_Bool __sepEnable__Fb_R9sofstream__1(struct ofstream *__anonymous_object1418);
     484const char *__sepGet__FPCc_R9sofstream__1(struct ofstream *__anonymous_object1419);
     485void __sepSet__F_R9sofstreamPCc__1(struct ofstream *__anonymous_object1420, const char *__anonymous_object1421);
     486const char *__sepGetTuple__FPCc_R9sofstream__1(struct ofstream *__anonymous_object1422);
     487void __sepSetTuple__F_R9sofstreamPCc__1(struct ofstream *__anonymous_object1423, const char *__anonymous_object1424);
     488signed int __fail__Fi_R9sofstream__1(struct ofstream *__anonymous_object1425);
     489signed int __flush__Fi_R9sofstream__1(struct ofstream *__anonymous_object1426);
     490void __open__F_R9sofstreamPCcPCc__1(struct ofstream *__anonymous_object1427, const char *__name__PCc_1, const char *__mode__PCc_1);
     491void __open__F_R9sofstreamPCc__1(struct ofstream *__anonymous_object1428, const char *__name__PCc_1);
     492void __close__F_R9sofstream__1(struct ofstream *__anonymous_object1429);
     493struct ofstream *__write__FR9sofstream_R9sofstreamPCcUl__1(struct ofstream *__anonymous_object1430, const char *__data__PCc_1, unsigned long int __size__Ul_1);
     494signed int __fmt__Fi_R9sofstreamPCc__1(struct ofstream *__anonymous_object1431, const char *__fmt__PCc_1, ...);
    425495void ___constructor__F_R9sofstream__1(struct ofstream *__os__R9sofstream_1);
    426496void ___constructor__F_R9sofstreamPCcPCc__1(struct ofstream *__os__R9sofstream_1, const char *__name__PCc_1, const char *__mode__PCc_1);
     
    461531struct ifstream *__read__FR9sifstream_R9sifstreamPcUl__1(struct ifstream *__is__R9sifstream_1, char *__data__Pc_1, unsigned long int __size__Ul_1);
    462532struct ifstream *__ungetc__FR9sifstream_R9sifstreamc__1(struct ifstream *__is__R9sifstream_1, char __c__c_1);
    463 signed int __fmt__Fi_R9sifstreamPCc__1(struct ifstream *__anonymous_object1378, const char *__fmt__PCc_1, ...);
     533signed int __fmt__Fi_R9sifstreamPCc__1(struct ifstream *__anonymous_object1432, const char *__fmt__PCc_1, ...);
    464534void ___constructor__F_R9sifstream__1(struct ifstream *__is__R9sifstream_1);
    465535void ___constructor__F_R9sifstreamPCcPCc__1(struct ifstream *__is__R9sifstream_1, const char *__name__PCc_1, const char *__mode__PCc_1);
     
    471541    struct ofstream *_tmp_cp_ret4;
    472542    __attribute__ ((unused)) struct ofstream *_thunk0(struct ofstream *_p0){
    473         return __endl__A0_1_0_0___sepPrt__PFb_Rd0___sepReset__PF_Rd0___sepReset__PF_Rd0b___sepGetCur__PFPCc_Rd0___sepSetCur__PF_Rd0PCc___getNL__PFb_Rd0___setNL__PF_Rd0b___sepOn__PF_Rd0___sepOff__PF_Rd0___sepDisable__PFb_Rd0___sepEnable__PFb_Rd0___sepGet__PFPCc_Rd0___sepSet__PF_Rd0PCc___sepGetTuple__PFPCc_Rd0___sepSetTuple__PF_Rd0PCc___fail__PFi_Rd0___flush__PFi_Rd0___open__PF_Rd0PCcPCc___close__PF_Rd0___write__PFRd0_Rd0PCcUl___fmt__PFi_Rd0PCc__FRd0_Rd0__1(((_Bool (*)(void *__anonymous_object1379))__sepPrt__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1380))__sepReset__F_R9sofstream__1), ((void (*)(void *__anonymous_object1381, _Bool __anonymous_object1382))__sepReset__F_R9sofstreamb__1), ((const char *(*)(void *__anonymous_object1383))__sepGetCur__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1384, const char *__anonymous_object1385))__sepSetCur__F_R9sofstreamPCc__1), ((_Bool (*)(void *__anonymous_object1386))__getNL__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1387, _Bool __anonymous_object1388))__setNL__F_R9sofstreamb__1), ((void (*)(void *__anonymous_object1389))__sepOn__F_R9sofstream__1), ((void (*)(void *__anonymous_object1390))__sepOff__F_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1391))__sepDisable__Fb_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1392))__sepEnable__Fb_R9sofstream__1), ((const char *(*)(void *__anonymous_object1393))__sepGet__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1394, const char *__anonymous_object1395))__sepSet__F_R9sofstreamPCc__1), ((const char *(*)(void *__anonymous_object1396))__sepGetTuple__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1397, const char *__anonymous_object1398))__sepSetTuple__F_R9sofstreamPCc__1), ((signed int (*)(void *__anonymous_object1399))__fail__Fi_R9sofstream__1), ((signed int (*)(void *__anonymous_object1400))__flush__Fi_R9sofstream__1), ((void (*)(void *__os__R7tostype_1, const char *__name__PCc_1, const char *__mode__PCc_1))__open__F_R9sofstreamPCcPCc__1), ((void (*)(void *__os__R7tostype_1))__close__F_R9sofstream__1), ((void *(*)(void *__anonymous_object1401, const char *__anonymous_object1402, unsigned long int __anonymous_object1403))__write__FR9sofstream_R9sofstreamPCcUl__1), ((signed int (*)(void *__anonymous_object1404, const char *__fmt__PCc_1, ...))__fmt__Fi_R9sofstreamPCc__1), ((void *)_p0));
    474     }
    475     ((void)(((void)(_tmp_cp_ret4=((struct ofstream *)___operator_bitor__A0_1_0_0___sepPrt__PFb_Rd0___sepReset__PF_Rd0___sepReset__PF_Rd0b___sepGetCur__PFPCc_Rd0___sepSetCur__PF_Rd0PCc___getNL__PFb_Rd0___setNL__PF_Rd0b___sepOn__PF_Rd0___sepOff__PF_Rd0___sepDisable__PFb_Rd0___sepEnable__PFb_Rd0___sepGet__PFPCc_Rd0___sepSet__PF_Rd0PCc___sepGetTuple__PFPCc_Rd0___sepSetTuple__PF_Rd0PCc___fail__PFi_Rd0___flush__PFi_Rd0___open__PF_Rd0PCcPCc___close__PF_Rd0___write__PFRd0_Rd0PCcUl___fmt__PFi_Rd0PCc__FRd0_Rd0PFRd0_Rd0___1(((_Bool (*)(void *__anonymous_object1405))__sepPrt__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1406))__sepReset__F_R9sofstream__1), ((void (*)(void *__anonymous_object1407, _Bool __anonymous_object1408))__sepReset__F_R9sofstreamb__1), ((const char *(*)(void *__anonymous_object1409))__sepGetCur__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1410, const char *__anonymous_object1411))__sepSetCur__F_R9sofstreamPCc__1), ((_Bool (*)(void *__anonymous_object1412))__getNL__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1413, _Bool __anonymous_object1414))__setNL__F_R9sofstreamb__1), ((void (*)(void *__anonymous_object1415))__sepOn__F_R9sofstream__1), ((void (*)(void *__anonymous_object1416))__sepOff__F_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1417))__sepDisable__Fb_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1418))__sepEnable__Fb_R9sofstream__1), ((const char *(*)(void *__anonymous_object1419))__sepGet__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1420, const char *__anonymous_object1421))__sepSet__F_R9sofstreamPCc__1), ((const char *(*)(void *__anonymous_object1422))__sepGetTuple__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1423, const char *__anonymous_object1424))__sepSetTuple__F_R9sofstreamPCc__1), ((signed int (*)(void *__anonymous_object1425))__fail__Fi_R9sofstream__1), ((signed int (*)(void *__anonymous_object1426))__flush__Fi_R9sofstream__1), ((void (*)(void *__os__R7tostype_1, const char *__name__PCc_1, const char *__mode__PCc_1))__open__F_R9sofstreamPCcPCc__1), ((void (*)(void *__os__R7tostype_1))__close__F_R9sofstream__1), ((void *(*)(void *__anonymous_object1427, const char *__anonymous_object1428, unsigned long int __anonymous_object1429))__write__FR9sofstream_R9sofstreamPCcUl__1), ((signed int (*)(void *__anonymous_object1430, const char *__fmt__PCc_1, ...))__fmt__Fi_R9sofstreamPCc__1), ((void *)(((void)(_tmp_cp_ret3=((struct ofstream *)___operator_bitor__A0_1_0_0___sepPrt__PFb_Rd0___sepReset__PF_Rd0___sepReset__PF_Rd0b___sepGetCur__PFPCc_Rd0___sepSetCur__PF_Rd0PCc___getNL__PFb_Rd0___setNL__PF_Rd0b___sepOn__PF_Rd0___sepOff__PF_Rd0___sepDisable__PFb_Rd0___sepEnable__PFb_Rd0___sepGet__PFPCc_Rd0___sepSet__PF_Rd0PCc___sepGetTuple__PFPCc_Rd0___sepSetTuple__PF_Rd0PCc___fail__PFi_Rd0___flush__PFi_Rd0___open__PF_Rd0PCcPCc___close__PF_Rd0___write__PFRd0_Rd0PCcUl___fmt__PFi_Rd0PCc__FRd0_Rd0c__1(((_Bool (*)(void *__anonymous_object1431))__sepPrt__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1432))__sepReset__F_R9sofstream__1), ((void (*)(void *__anonymous_object1433, _Bool __anonymous_object1434))__sepReset__F_R9sofstreamb__1), ((const char *(*)(void *__anonymous_object1435))__sepGetCur__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1436, const char *__anonymous_object1437))__sepSetCur__F_R9sofstreamPCc__1), ((_Bool (*)(void *__anonymous_object1438))__getNL__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1439, _Bool __anonymous_object1440))__setNL__F_R9sofstreamb__1), ((void (*)(void *__anonymous_object1441))__sepOn__F_R9sofstream__1), ((void (*)(void *__anonymous_object1442))__sepOff__F_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1443))__sepDisable__Fb_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1444))__sepEnable__Fb_R9sofstream__1), ((const char *(*)(void *__anonymous_object1445))__sepGet__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1446, const char *__anonymous_object1447))__sepSet__F_R9sofstreamPCc__1), ((const char *(*)(void *__anonymous_object1448))__sepGetTuple__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1449, const char *__anonymous_object1450))__sepSetTuple__F_R9sofstreamPCc__1), ((signed int (*)(void *__anonymous_object1451))__fail__Fi_R9sofstream__1), ((signed int (*)(void *__anonymous_object1452))__flush__Fi_R9sofstream__1), ((void (*)(void *__os__R7tostype_1, const char *__name__PCc_1, const char *__mode__PCc_1))__open__F_R9sofstreamPCcPCc__1), ((void (*)(void *__os__R7tostype_1))__close__F_R9sofstream__1), ((void *(*)(void *__anonymous_object1453, const char *__anonymous_object1454, unsigned long int __anonymous_object1455))__write__FR9sofstream_R9sofstreamPCcUl__1), ((signed int (*)(void *__anonymous_object1456, const char *__fmt__PCc_1, ...))__fmt__Fi_R9sofstreamPCc__1), ((void *)(((void)(_tmp_cp_ret2=((struct ofstream *)___operator_bitor__A0_1_0_0___sepPrt__PFb_Rd0___sepReset__PF_Rd0___sepReset__PF_Rd0b___sepGetCur__PFPCc_Rd0___sepSetCur__PF_Rd0PCc___getNL__PFb_Rd0___setNL__PF_Rd0b___sepOn__PF_Rd0___sepOff__PF_Rd0___sepDisable__PFb_Rd0___sepEnable__PFb_Rd0___sepGet__PFPCc_Rd0___sepSet__PF_Rd0PCc___sepGetTuple__PFPCc_Rd0___sepSetTuple__PF_Rd0PCc___fail__PFi_Rd0___flush__PFi_Rd0___open__PF_Rd0PCcPCc___close__PF_Rd0___write__PFRd0_Rd0PCcUl___fmt__PFi_Rd0PCc__FRd0_Rd0PCc__1(((_Bool (*)(void *__anonymous_object1457))__sepPrt__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1458))__sepReset__F_R9sofstream__1), ((void (*)(void *__anonymous_object1459, _Bool __anonymous_object1460))__sepReset__F_R9sofstreamb__1), ((const char *(*)(void *__anonymous_object1461))__sepGetCur__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1462, const char *__anonymous_object1463))__sepSetCur__F_R9sofstreamPCc__1), ((_Bool (*)(void *__anonymous_object1464))__getNL__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1465, _Bool __anonymous_object1466))__setNL__F_R9sofstreamb__1), ((void (*)(void *__anonymous_object1467))__sepOn__F_R9sofstream__1), ((void (*)(void *__anonymous_object1468))__sepOff__F_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1469))__sepDisable__Fb_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1470))__sepEnable__Fb_R9sofstream__1), ((const char *(*)(void *__anonymous_object1471))__sepGet__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1472, const char *__anonymous_object1473))__sepSet__F_R9sofstreamPCc__1), ((const char *(*)(void *__anonymous_object1474))__sepGetTuple__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1475, const char *__anonymous_object1476))__sepSetTuple__F_R9sofstreamPCc__1), ((signed int (*)(void *__anonymous_object1477))__fail__Fi_R9sofstream__1), ((signed int (*)(void *__anonymous_object1478))__flush__Fi_R9sofstream__1), ((void (*)(void *__os__R7tostype_1, const char *__name__PCc_1, const char *__mode__PCc_1))__open__F_R9sofstreamPCcPCc__1), ((void (*)(void *__os__R7tostype_1))__close__F_R9sofstream__1), ((void *(*)(void *__anonymous_object1479, const char *__anonymous_object1480, unsigned long int __anonymous_object1481))__write__FR9sofstream_R9sofstreamPCcUl__1), ((signed int (*)(void *__anonymous_object1482, const char *__fmt__PCc_1, ...))__fmt__Fi_R9sofstreamPCc__1), ((void *)__sout__R9sofstream_1), "char ")))) , _tmp_cp_ret2)), __v__c_1)))) , _tmp_cp_ret3)), ((void *(*)(void *__anonymous_object1483))(&_thunk0)))))) , _tmp_cp_ret4));
     543        return __endl__A0_1_0_0___sepPrt__PFb_Rd0___sepReset__PF_Rd0___sepReset__PF_Rd0b___sepGetCur__PFPCc_Rd0___sepSetCur__PF_Rd0PCc___getNL__PFb_Rd0___setNL__PF_Rd0b___sepOn__PF_Rd0___sepOff__PF_Rd0___sepDisable__PFb_Rd0___sepEnable__PFb_Rd0___sepGet__PFPCc_Rd0___sepSet__PF_Rd0PCc___sepGetTuple__PFPCc_Rd0___sepSetTuple__PF_Rd0PCc___fail__PFi_Rd0___flush__PFi_Rd0___open__PF_Rd0PCcPCc___close__PF_Rd0___write__PFRd0_Rd0PCcUl___fmt__PFi_Rd0PCc__FRd0_Rd0__1(((_Bool (*)(void *__anonymous_object1433))__sepPrt__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1434))__sepReset__F_R9sofstream__1), ((void (*)(void *__anonymous_object1435, _Bool __anonymous_object1436))__sepReset__F_R9sofstreamb__1), ((const char *(*)(void *__anonymous_object1437))__sepGetCur__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1438, const char *__anonymous_object1439))__sepSetCur__F_R9sofstreamPCc__1), ((_Bool (*)(void *__anonymous_object1440))__getNL__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1441, _Bool __anonymous_object1442))__setNL__F_R9sofstreamb__1), ((void (*)(void *__anonymous_object1443))__sepOn__F_R9sofstream__1), ((void (*)(void *__anonymous_object1444))__sepOff__F_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1445))__sepDisable__Fb_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1446))__sepEnable__Fb_R9sofstream__1), ((const char *(*)(void *__anonymous_object1447))__sepGet__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1448, const char *__anonymous_object1449))__sepSet__F_R9sofstreamPCc__1), ((const char *(*)(void *__anonymous_object1450))__sepGetTuple__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1451, const char *__anonymous_object1452))__sepSetTuple__F_R9sofstreamPCc__1), ((signed int (*)(void *__anonymous_object1453))__fail__Fi_R9sofstream__1), ((signed int (*)(void *__anonymous_object1454))__flush__Fi_R9sofstream__1), ((void (*)(void *__os__R7tostype_1, const char *__name__PCc_1, const char *__mode__PCc_1))__open__F_R9sofstreamPCcPCc__1), ((void (*)(void *__os__R7tostype_1))__close__F_R9sofstream__1), ((void *(*)(void *__anonymous_object1455, const char *__anonymous_object1456, unsigned long int __anonymous_object1457))__write__FR9sofstream_R9sofstreamPCcUl__1), ((signed int (*)(void *__anonymous_object1458, const char *__fmt__PCc_1, ...))__fmt__Fi_R9sofstreamPCc__1), ((void *)_p0));
     544    }
     545    ((void)(((void)(_tmp_cp_ret4=((struct ofstream *)___operator_bitor__A0_1_0_0___sepPrt__PFb_Rd0___sepReset__PF_Rd0___sepReset__PF_Rd0b___sepGetCur__PFPCc_Rd0___sepSetCur__PF_Rd0PCc___getNL__PFb_Rd0___setNL__PF_Rd0b___sepOn__PF_Rd0___sepOff__PF_Rd0___sepDisable__PFb_Rd0___sepEnable__PFb_Rd0___sepGet__PFPCc_Rd0___sepSet__PF_Rd0PCc___sepGetTuple__PFPCc_Rd0___sepSetTuple__PF_Rd0PCc___fail__PFi_Rd0___flush__PFi_Rd0___open__PF_Rd0PCcPCc___close__PF_Rd0___write__PFRd0_Rd0PCcUl___fmt__PFi_Rd0PCc__FRd0_Rd0PFRd0_Rd0___1(((_Bool (*)(void *__anonymous_object1459))__sepPrt__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1460))__sepReset__F_R9sofstream__1), ((void (*)(void *__anonymous_object1461, _Bool __anonymous_object1462))__sepReset__F_R9sofstreamb__1), ((const char *(*)(void *__anonymous_object1463))__sepGetCur__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1464, const char *__anonymous_object1465))__sepSetCur__F_R9sofstreamPCc__1), ((_Bool (*)(void 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*__mode__PCc_1))__open__F_R9sofstreamPCcPCc__1), ((void (*)(void *__os__R7tostype_1))__close__F_R9sofstream__1), ((void *(*)(void *__anonymous_object1533, const char *__anonymous_object1534, unsigned long int __anonymous_object1535))__write__FR9sofstream_R9sofstreamPCcUl__1), ((signed int (*)(void *__anonymous_object1536, const char *__fmt__PCc_1, ...))__fmt__Fi_R9sofstreamPCc__1), ((void *)__sout__R9sofstream_1), "char ")))) , _tmp_cp_ret2)), __v__c_1)))) , _tmp_cp_ret3)), ((void *(*)(void *__anonymous_object1537))(&_thunk0)))))) , _tmp_cp_ret4));
    476546}
    477547void __f__F_Sc__1(signed char __v__Sc_1){
     
    480550    struct ofstream *_tmp_cp_ret7;
    481551    __attribute__ ((unused)) struct ofstream *_thunk1(struct ofstream *_p0){
    482         return __endl__A0_1_0_0___sepPrt__PFb_Rd0___sepReset__PF_Rd0___sepReset__PF_Rd0b___sepGetCur__PFPCc_Rd0___sepSetCur__PF_Rd0PCc___getNL__PFb_Rd0___setNL__PF_Rd0b___sepOn__PF_Rd0___sepOff__PF_Rd0___sepDisable__PFb_Rd0___sepEnable__PFb_Rd0___sepGet__PFPCc_Rd0___sepSet__PF_Rd0PCc___sepGetTuple__PFPCc_Rd0___sepSetTuple__PF_Rd0PCc___fail__PFi_Rd0___flush__PFi_Rd0___open__PF_Rd0PCcPCc___close__PF_Rd0___write__PFRd0_Rd0PCcUl___fmt__PFi_Rd0PCc__FRd0_Rd0__1(((_Bool (*)(void *__anonymous_object1484))__sepPrt__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1485))__sepReset__F_R9sofstream__1), ((void (*)(void *__anonymous_object1486, _Bool __anonymous_object1487))__sepReset__F_R9sofstreamb__1), ((const char *(*)(void *__anonymous_object1488))__sepGetCur__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1489, const char *__anonymous_object1490))__sepSetCur__F_R9sofstreamPCc__1), ((_Bool (*)(void *__anonymous_object1491))__getNL__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1492, _Bool __anonymous_object1493))__setNL__F_R9sofstreamb__1), ((void (*)(void *__anonymous_object1494))__sepOn__F_R9sofstream__1), ((void (*)(void *__anonymous_object1495))__sepOff__F_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1496))__sepDisable__Fb_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1497))__sepEnable__Fb_R9sofstream__1), ((const char *(*)(void *__anonymous_object1498))__sepGet__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1499, const char *__anonymous_object1500))__sepSet__F_R9sofstreamPCc__1), ((const char *(*)(void *__anonymous_object1501))__sepGetTuple__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1502, const char *__anonymous_object1503))__sepSetTuple__F_R9sofstreamPCc__1), ((signed int (*)(void *__anonymous_object1504))__fail__Fi_R9sofstream__1), ((signed int (*)(void *__anonymous_object1505))__flush__Fi_R9sofstream__1), ((void (*)(void *__os__R7tostype_1, const char *__name__PCc_1, const char *__mode__PCc_1))__open__F_R9sofstreamPCcPCc__1), ((void (*)(void *__os__R7tostype_1))__close__F_R9sofstream__1), ((void *(*)(void *__anonymous_object1506, const char *__anonymous_object1507, unsigned long int __anonymous_object1508))__write__FR9sofstream_R9sofstreamPCcUl__1), ((signed int (*)(void *__anonymous_object1509, const char *__fmt__PCc_1, ...))__fmt__Fi_R9sofstreamPCc__1), ((void *)_p0));
    483     }
    484     ((void)(((void)(_tmp_cp_ret7=((struct ofstream *)___operator_bitor__A0_1_0_0___sepPrt__PFb_Rd0___sepReset__PF_Rd0___sepReset__PF_Rd0b___sepGetCur__PFPCc_Rd0___sepSetCur__PF_Rd0PCc___getNL__PFb_Rd0___setNL__PF_Rd0b___sepOn__PF_Rd0___sepOff__PF_Rd0___sepDisable__PFb_Rd0___sepEnable__PFb_Rd0___sepGet__PFPCc_Rd0___sepSet__PF_Rd0PCc___sepGetTuple__PFPCc_Rd0___sepSetTuple__PF_Rd0PCc___fail__PFi_Rd0___flush__PFi_Rd0___open__PF_Rd0PCcPCc___close__PF_Rd0___write__PFRd0_Rd0PCcUl___fmt__PFi_Rd0PCc__FRd0_Rd0PFRd0_Rd0___1(((_Bool (*)(void *__anonymous_object1510))__sepPrt__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1511))__sepReset__F_R9sofstream__1), ((void (*)(void *__anonymous_object1512, _Bool __anonymous_object1513))__sepReset__F_R9sofstreamb__1), ((const char *(*)(void *__anonymous_object1514))__sepGetCur__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1515, const char *__anonymous_object1516))__sepSetCur__F_R9sofstreamPCc__1), ((_Bool (*)(void 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*)___operator_bitor__A0_1_0_0___sepPrt__PFb_Rd0___sepReset__PF_Rd0___sepReset__PF_Rd0b___sepGetCur__PFPCc_Rd0___sepSetCur__PF_Rd0PCc___getNL__PFb_Rd0___setNL__PF_Rd0b___sepOn__PF_Rd0___sepOff__PF_Rd0___sepDisable__PFb_Rd0___sepEnable__PFb_Rd0___sepGet__PFPCc_Rd0___sepSet__PF_Rd0PCc___sepGetTuple__PFPCc_Rd0___sepSetTuple__PF_Rd0PCc___fail__PFi_Rd0___flush__PFi_Rd0___open__PF_Rd0PCcPCc___close__PF_Rd0___write__PFRd0_Rd0PCcUl___fmt__PFi_Rd0PCc__FRd0_Rd0PCc__1(((_Bool (*)(void *__anonymous_object1562))__sepPrt__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1563))__sepReset__F_R9sofstream__1), ((void (*)(void *__anonymous_object1564, _Bool __anonymous_object1565))__sepReset__F_R9sofstreamb__1), ((const char *(*)(void *__anonymous_object1566))__sepGetCur__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1567, const char *__anonymous_object1568))__sepSetCur__F_R9sofstreamPCc__1), ((_Bool (*)(void *__anonymous_object1569))__getNL__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1570, _Bool __anonymous_object1571))__setNL__F_R9sofstreamb__1), ((void (*)(void *__anonymous_object1572))__sepOn__F_R9sofstream__1), ((void (*)(void *__anonymous_object1573))__sepOff__F_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1574))__sepDisable__Fb_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1575))__sepEnable__Fb_R9sofstream__1), ((const char *(*)(void *__anonymous_object1576))__sepGet__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1577, const char *__anonymous_object1578))__sepSet__F_R9sofstreamPCc__1), ((const char *(*)(void *__anonymous_object1579))__sepGetTuple__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1580, const char *__anonymous_object1581))__sepSetTuple__F_R9sofstreamPCc__1), ((signed int (*)(void *__anonymous_object1582))__fail__Fi_R9sofstream__1), ((signed int (*)(void *__anonymous_object1583))__flush__Fi_R9sofstream__1), ((void (*)(void *__os__R7tostype_1, const char *__name__PCc_1, const char *__mode__PCc_1))__open__F_R9sofstreamPCcPCc__1), ((void (*)(void *__os__R7tostype_1))__close__F_R9sofstream__1), ((void *(*)(void *__anonymous_object1584, const char *__anonymous_object1585, unsigned long int __anonymous_object1586))__write__FR9sofstream_R9sofstreamPCcUl__1), ((signed int (*)(void *__anonymous_object1587, const char *__fmt__PCc_1, ...))__fmt__Fi_R9sofstreamPCc__1), ((void *)__sout__R9sofstream_1), "signed char ")))) , _tmp_cp_ret5)), __v__Sc_1)))) , _tmp_cp_ret6)), ((void *(*)(void *__anonymous_object1588))(&_thunk1)))))) , _tmp_cp_ret7));
     552        return __endl__A0_1_0_0___sepPrt__PFb_Rd0___sepReset__PF_Rd0___sepReset__PF_Rd0b___sepGetCur__PFPCc_Rd0___sepSetCur__PF_Rd0PCc___getNL__PFb_Rd0___setNL__PF_Rd0b___sepOn__PF_Rd0___sepOff__PF_Rd0___sepDisable__PFb_Rd0___sepEnable__PFb_Rd0___sepGet__PFPCc_Rd0___sepSet__PF_Rd0PCc___sepGetTuple__PFPCc_Rd0___sepSetTuple__PF_Rd0PCc___fail__PFi_Rd0___flush__PFi_Rd0___open__PF_Rd0PCcPCc___close__PF_Rd0___write__PFRd0_Rd0PCcUl___fmt__PFi_Rd0PCc__FRd0_Rd0__1(((_Bool (*)(void *__anonymous_object1538))__sepPrt__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1539))__sepReset__F_R9sofstream__1), ((void (*)(void *__anonymous_object1540, _Bool __anonymous_object1541))__sepReset__F_R9sofstreamb__1), ((const char *(*)(void *__anonymous_object1542))__sepGetCur__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1543, const char *__anonymous_object1544))__sepSetCur__F_R9sofstreamPCc__1), ((_Bool (*)(void *__anonymous_object1545))__getNL__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1546, _Bool __anonymous_object1547))__setNL__F_R9sofstreamb__1), ((void (*)(void *__anonymous_object1548))__sepOn__F_R9sofstream__1), ((void (*)(void *__anonymous_object1549))__sepOff__F_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1550))__sepDisable__Fb_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1551))__sepEnable__Fb_R9sofstream__1), ((const char *(*)(void *__anonymous_object1552))__sepGet__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1553, const char *__anonymous_object1554))__sepSet__F_R9sofstreamPCc__1), ((const char *(*)(void *__anonymous_object1555))__sepGetTuple__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1556, const char *__anonymous_object1557))__sepSetTuple__F_R9sofstreamPCc__1), ((signed int (*)(void *__anonymous_object1558))__fail__Fi_R9sofstream__1), ((signed int (*)(void *__anonymous_object1559))__flush__Fi_R9sofstream__1), ((void (*)(void *__os__R7tostype_1, const char *__name__PCc_1, const char *__mode__PCc_1))__open__F_R9sofstreamPCcPCc__1), ((void (*)(void *__os__R7tostype_1))__close__F_R9sofstream__1), ((void *(*)(void *__anonymous_object1560, const char *__anonymous_object1561, unsigned long int __anonymous_object1562))__write__FR9sofstream_R9sofstreamPCcUl__1), ((signed int (*)(void *__anonymous_object1563, const char *__fmt__PCc_1, ...))__fmt__Fi_R9sofstreamPCc__1), ((void *)_p0));
     553    }
     554    ((void)(((void)(_tmp_cp_ret7=((struct ofstream *)___operator_bitor__A0_1_0_0___sepPrt__PFb_Rd0___sepReset__PF_Rd0___sepReset__PF_Rd0b___sepGetCur__PFPCc_Rd0___sepSetCur__PF_Rd0PCc___getNL__PFb_Rd0___setNL__PF_Rd0b___sepOn__PF_Rd0___sepOff__PF_Rd0___sepDisable__PFb_Rd0___sepEnable__PFb_Rd0___sepGet__PFPCc_Rd0___sepSet__PF_Rd0PCc___sepGetTuple__PFPCc_Rd0___sepSetTuple__PF_Rd0PCc___fail__PFi_Rd0___flush__PFi_Rd0___open__PF_Rd0PCcPCc___close__PF_Rd0___write__PFRd0_Rd0PCcUl___fmt__PFi_Rd0PCc__FRd0_Rd0PFRd0_Rd0___1(((_Bool (*)(void *__anonymous_object1564))__sepPrt__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1565))__sepReset__F_R9sofstream__1), ((void (*)(void *__anonymous_object1566, _Bool __anonymous_object1567))__sepReset__F_R9sofstreamb__1), ((const char *(*)(void *__anonymous_object1568))__sepGetCur__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1569, const char *__anonymous_object1570))__sepSetCur__F_R9sofstreamPCc__1), ((_Bool (*)(void *__anonymous_object1571))__getNL__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1572, _Bool __anonymous_object1573))__setNL__F_R9sofstreamb__1), ((void (*)(void *__anonymous_object1574))__sepOn__F_R9sofstream__1), ((void (*)(void *__anonymous_object1575))__sepOff__F_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1576))__sepDisable__Fb_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1577))__sepEnable__Fb_R9sofstream__1), ((const char *(*)(void *__anonymous_object1578))__sepGet__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1579, const char *__anonymous_object1580))__sepSet__F_R9sofstreamPCc__1), ((const char *(*)(void *__anonymous_object1581))__sepGetTuple__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1582, const char *__anonymous_object1583))__sepSetTuple__F_R9sofstreamPCc__1), ((signed int (*)(void *__anonymous_object1584))__fail__Fi_R9sofstream__1), ((signed int (*)(void *__anonymous_object1585))__flush__Fi_R9sofstream__1), ((void (*)(void *__os__R7tostype_1, const char *__name__PCc_1, const char *__mode__PCc_1))__open__F_R9sofstreamPCcPCc__1), ((void (*)(void *__os__R7tostype_1))__close__F_R9sofstream__1), ((void *(*)(void *__anonymous_object1586, const char *__anonymous_object1587, unsigned long int __anonymous_object1588))__write__FR9sofstream_R9sofstreamPCcUl__1), ((signed int (*)(void *__anonymous_object1589, const char *__fmt__PCc_1, ...))__fmt__Fi_R9sofstreamPCc__1), ((void *)(((void)(_tmp_cp_ret6=((struct ofstream *)___operator_bitor__A0_1_0_0___sepPrt__PFb_Rd0___sepReset__PF_Rd0___sepReset__PF_Rd0b___sepGetCur__PFPCc_Rd0___sepSetCur__PF_Rd0PCc___getNL__PFb_Rd0___setNL__PF_Rd0b___sepOn__PF_Rd0___sepOff__PF_Rd0___sepDisable__PFb_Rd0___sepEnable__PFb_Rd0___sepGet__PFPCc_Rd0___sepSet__PF_Rd0PCc___sepGetTuple__PFPCc_Rd0___sepSetTuple__PF_Rd0PCc___fail__PFi_Rd0___flush__PFi_Rd0___open__PF_Rd0PCcPCc___close__PF_Rd0___write__PFRd0_Rd0PCcUl___fmt__PFi_Rd0PCc__FRd0_Rd0Sc__1(((_Bool (*)(void 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*__anonymous_object1605, const char *__anonymous_object1606))__sepSet__F_R9sofstreamPCc__1), ((const char *(*)(void *__anonymous_object1607))__sepGetTuple__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1608, const char *__anonymous_object1609))__sepSetTuple__F_R9sofstreamPCc__1), ((signed int (*)(void *__anonymous_object1610))__fail__Fi_R9sofstream__1), ((signed int (*)(void *__anonymous_object1611))__flush__Fi_R9sofstream__1), ((void (*)(void *__os__R7tostype_1, const char *__name__PCc_1, const char *__mode__PCc_1))__open__F_R9sofstreamPCcPCc__1), ((void (*)(void *__os__R7tostype_1))__close__F_R9sofstream__1), ((void *(*)(void *__anonymous_object1612, const char *__anonymous_object1613, unsigned long int __anonymous_object1614))__write__FR9sofstream_R9sofstreamPCcUl__1), ((signed int (*)(void *__anonymous_object1615, const char *__fmt__PCc_1, ...))__fmt__Fi_R9sofstreamPCc__1), ((void *)(((void)(_tmp_cp_ret5=((struct ofstream 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*__mode__PCc_1))__open__F_R9sofstreamPCcPCc__1), ((void (*)(void *__os__R7tostype_1))__close__F_R9sofstream__1), ((void *(*)(void *__anonymous_object1638, const char *__anonymous_object1639, unsigned long int __anonymous_object1640))__write__FR9sofstream_R9sofstreamPCcUl__1), ((signed int (*)(void *__anonymous_object1641, const char *__fmt__PCc_1, ...))__fmt__Fi_R9sofstreamPCc__1), ((void *)__sout__R9sofstream_1), "signed char ")))) , _tmp_cp_ret5)), __v__Sc_1)))) , _tmp_cp_ret6)), ((void *(*)(void *__anonymous_object1642))(&_thunk1)))))) , _tmp_cp_ret7));
    485555}
    486556void __f__F_Uc__1(unsigned char __v__Uc_1){
     
    489559    struct ofstream *_tmp_cp_ret10;
    490560    __attribute__ ((unused)) struct ofstream *_thunk2(struct ofstream *_p0){
    491         return __endl__A0_1_0_0___sepPrt__PFb_Rd0___sepReset__PF_Rd0___sepReset__PF_Rd0b___sepGetCur__PFPCc_Rd0___sepSetCur__PF_Rd0PCc___getNL__PFb_Rd0___setNL__PF_Rd0b___sepOn__PF_Rd0___sepOff__PF_Rd0___sepDisable__PFb_Rd0___sepEnable__PFb_Rd0___sepGet__PFPCc_Rd0___sepSet__PF_Rd0PCc___sepGetTuple__PFPCc_Rd0___sepSetTuple__PF_Rd0PCc___fail__PFi_Rd0___flush__PFi_Rd0___open__PF_Rd0PCcPCc___close__PF_Rd0___write__PFRd0_Rd0PCcUl___fmt__PFi_Rd0PCc__FRd0_Rd0__1(((_Bool (*)(void *__anonymous_object1589))__sepPrt__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1590))__sepReset__F_R9sofstream__1), ((void (*)(void *__anonymous_object1591, _Bool __anonymous_object1592))__sepReset__F_R9sofstreamb__1), ((const char *(*)(void *__anonymous_object1593))__sepGetCur__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1594, const char *__anonymous_object1595))__sepSetCur__F_R9sofstreamPCc__1), ((_Bool (*)(void *__anonymous_object1596))__getNL__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1597, _Bool __anonymous_object1598))__setNL__F_R9sofstreamb__1), ((void (*)(void *__anonymous_object1599))__sepOn__F_R9sofstream__1), ((void (*)(void *__anonymous_object1600))__sepOff__F_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1601))__sepDisable__Fb_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1602))__sepEnable__Fb_R9sofstream__1), ((const char *(*)(void *__anonymous_object1603))__sepGet__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1604, const char *__anonymous_object1605))__sepSet__F_R9sofstreamPCc__1), ((const char *(*)(void *__anonymous_object1606))__sepGetTuple__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1607, const char *__anonymous_object1608))__sepSetTuple__F_R9sofstreamPCc__1), ((signed int (*)(void *__anonymous_object1609))__fail__Fi_R9sofstream__1), ((signed int (*)(void *__anonymous_object1610))__flush__Fi_R9sofstream__1), ((void (*)(void *__os__R7tostype_1, const char *__name__PCc_1, const char *__mode__PCc_1))__open__F_R9sofstreamPCcPCc__1), ((void (*)(void *__os__R7tostype_1))__close__F_R9sofstream__1), ((void *(*)(void *__anonymous_object1611, const char *__anonymous_object1612, unsigned long int __anonymous_object1613))__write__FR9sofstream_R9sofstreamPCcUl__1), ((signed int (*)(void *__anonymous_object1614, const char *__fmt__PCc_1, ...))__fmt__Fi_R9sofstreamPCc__1), ((void *)_p0));
    492     }
    493     ((void)(((void)(_tmp_cp_ret10=((struct ofstream *)___operator_bitor__A0_1_0_0___sepPrt__PFb_Rd0___sepReset__PF_Rd0___sepReset__PF_Rd0b___sepGetCur__PFPCc_Rd0___sepSetCur__PF_Rd0PCc___getNL__PFb_Rd0___setNL__PF_Rd0b___sepOn__PF_Rd0___sepOff__PF_Rd0___sepDisable__PFb_Rd0___sepEnable__PFb_Rd0___sepGet__PFPCc_Rd0___sepSet__PF_Rd0PCc___sepGetTuple__PFPCc_Rd0___sepSetTuple__PF_Rd0PCc___fail__PFi_Rd0___flush__PFi_Rd0___open__PF_Rd0PCcPCc___close__PF_Rd0___write__PFRd0_Rd0PCcUl___fmt__PFi_Rd0PCc__FRd0_Rd0PFRd0_Rd0___1(((_Bool (*)(void *__anonymous_object1615))__sepPrt__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1616))__sepReset__F_R9sofstream__1), ((void (*)(void *__anonymous_object1617, _Bool __anonymous_object1618))__sepReset__F_R9sofstreamb__1), ((const char *(*)(void *__anonymous_object1619))__sepGetCur__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1620, const char *__anonymous_object1621))__sepSetCur__F_R9sofstreamPCc__1), ((_Bool (*)(void *__anonymous_object1622))__getNL__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1623, _Bool __anonymous_object1624))__setNL__F_R9sofstreamb__1), ((void (*)(void *__anonymous_object1625))__sepOn__F_R9sofstream__1), ((void (*)(void *__anonymous_object1626))__sepOff__F_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1627))__sepDisable__Fb_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1628))__sepEnable__Fb_R9sofstream__1), ((const char *(*)(void *__anonymous_object1629))__sepGet__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1630, const char *__anonymous_object1631))__sepSet__F_R9sofstreamPCc__1), ((const char *(*)(void *__anonymous_object1632))__sepGetTuple__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1633, const char *__anonymous_object1634))__sepSetTuple__F_R9sofstreamPCc__1), ((signed int (*)(void *__anonymous_object1635))__fail__Fi_R9sofstream__1), ((signed int (*)(void *__anonymous_object1636))__flush__Fi_R9sofstream__1), ((void (*)(void *__os__R7tostype_1, const char *__name__PCc_1, const char *__mode__PCc_1))__open__F_R9sofstreamPCcPCc__1), ((void (*)(void *__os__R7tostype_1))__close__F_R9sofstream__1), ((void *(*)(void *__anonymous_object1637, const char *__anonymous_object1638, unsigned long int __anonymous_object1639))__write__FR9sofstream_R9sofstreamPCcUl__1), ((signed int (*)(void *__anonymous_object1640, const char *__fmt__PCc_1, ...))__fmt__Fi_R9sofstreamPCc__1), ((void *)(((void)(_tmp_cp_ret9=((struct ofstream *)___operator_bitor__A0_1_0_0___sepPrt__PFb_Rd0___sepReset__PF_Rd0___sepReset__PF_Rd0b___sepGetCur__PFPCc_Rd0___sepSetCur__PF_Rd0PCc___getNL__PFb_Rd0___setNL__PF_Rd0b___sepOn__PF_Rd0___sepOff__PF_Rd0___sepDisable__PFb_Rd0___sepEnable__PFb_Rd0___sepGet__PFPCc_Rd0___sepSet__PF_Rd0PCc___sepGetTuple__PFPCc_Rd0___sepSetTuple__PF_Rd0PCc___fail__PFi_Rd0___flush__PFi_Rd0___open__PF_Rd0PCcPCc___close__PF_Rd0___write__PFRd0_Rd0PCcUl___fmt__PFi_Rd0PCc__FRd0_Rd0Uc__1(((_Bool (*)(void 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*__anonymous_object1656, const char *__anonymous_object1657))__sepSet__F_R9sofstreamPCc__1), ((const char *(*)(void *__anonymous_object1658))__sepGetTuple__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1659, const char *__anonymous_object1660))__sepSetTuple__F_R9sofstreamPCc__1), ((signed int (*)(void *__anonymous_object1661))__fail__Fi_R9sofstream__1), ((signed int (*)(void *__anonymous_object1662))__flush__Fi_R9sofstream__1), ((void (*)(void *__os__R7tostype_1, const char *__name__PCc_1, const char *__mode__PCc_1))__open__F_R9sofstreamPCcPCc__1), ((void (*)(void *__os__R7tostype_1))__close__F_R9sofstream__1), ((void *(*)(void *__anonymous_object1663, const char *__anonymous_object1664, unsigned long int __anonymous_object1665))__write__FR9sofstream_R9sofstreamPCcUl__1), ((signed int (*)(void *__anonymous_object1666, const char *__fmt__PCc_1, ...))__fmt__Fi_R9sofstreamPCc__1), ((void *)(((void)(_tmp_cp_ret8=((struct ofstream *)___operator_bitor__A0_1_0_0___sepPrt__PFb_Rd0___sepReset__PF_Rd0___sepReset__PF_Rd0b___sepGetCur__PFPCc_Rd0___sepSetCur__PF_Rd0PCc___getNL__PFb_Rd0___setNL__PF_Rd0b___sepOn__PF_Rd0___sepOff__PF_Rd0___sepDisable__PFb_Rd0___sepEnable__PFb_Rd0___sepGet__PFPCc_Rd0___sepSet__PF_Rd0PCc___sepGetTuple__PFPCc_Rd0___sepSetTuple__PF_Rd0PCc___fail__PFi_Rd0___flush__PFi_Rd0___open__PF_Rd0PCcPCc___close__PF_Rd0___write__PFRd0_Rd0PCcUl___fmt__PFi_Rd0PCc__FRd0_Rd0PCc__1(((_Bool (*)(void *__anonymous_object1667))__sepPrt__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1668))__sepReset__F_R9sofstream__1), ((void (*)(void *__anonymous_object1669, _Bool __anonymous_object1670))__sepReset__F_R9sofstreamb__1), ((const char *(*)(void *__anonymous_object1671))__sepGetCur__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1672, const char *__anonymous_object1673))__sepSetCur__F_R9sofstreamPCc__1), ((_Bool (*)(void *__anonymous_object1674))__getNL__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1675, _Bool __anonymous_object1676))__setNL__F_R9sofstreamb__1), ((void (*)(void *__anonymous_object1677))__sepOn__F_R9sofstream__1), ((void (*)(void *__anonymous_object1678))__sepOff__F_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1679))__sepDisable__Fb_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1680))__sepEnable__Fb_R9sofstream__1), ((const char *(*)(void *__anonymous_object1681))__sepGet__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1682, const char *__anonymous_object1683))__sepSet__F_R9sofstreamPCc__1), ((const char *(*)(void *__anonymous_object1684))__sepGetTuple__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1685, const char *__anonymous_object1686))__sepSetTuple__F_R9sofstreamPCc__1), ((signed int (*)(void *__anonymous_object1687))__fail__Fi_R9sofstream__1), ((signed int (*)(void *__anonymous_object1688))__flush__Fi_R9sofstream__1), ((void (*)(void *__os__R7tostype_1, const char *__name__PCc_1, const char *__mode__PCc_1))__open__F_R9sofstreamPCcPCc__1), ((void (*)(void *__os__R7tostype_1))__close__F_R9sofstream__1), ((void *(*)(void *__anonymous_object1689, const char *__anonymous_object1690, unsigned long int __anonymous_object1691))__write__FR9sofstream_R9sofstreamPCcUl__1), ((signed int (*)(void *__anonymous_object1692, const char *__fmt__PCc_1, ...))__fmt__Fi_R9sofstreamPCc__1), ((void *)__sout__R9sofstream_1), "unsigned char ")))) , _tmp_cp_ret8)), __v__Uc_1)))) , _tmp_cp_ret9)), ((void *(*)(void *__anonymous_object1693))(&_thunk2)))))) , _tmp_cp_ret10));
     561        return __endl__A0_1_0_0___sepPrt__PFb_Rd0___sepReset__PF_Rd0___sepReset__PF_Rd0b___sepGetCur__PFPCc_Rd0___sepSetCur__PF_Rd0PCc___getNL__PFb_Rd0___setNL__PF_Rd0b___sepOn__PF_Rd0___sepOff__PF_Rd0___sepDisable__PFb_Rd0___sepEnable__PFb_Rd0___sepGet__PFPCc_Rd0___sepSet__PF_Rd0PCc___sepGetTuple__PFPCc_Rd0___sepSetTuple__PF_Rd0PCc___fail__PFi_Rd0___flush__PFi_Rd0___open__PF_Rd0PCcPCc___close__PF_Rd0___write__PFRd0_Rd0PCcUl___fmt__PFi_Rd0PCc__FRd0_Rd0__1(((_Bool (*)(void *__anonymous_object1643))__sepPrt__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1644))__sepReset__F_R9sofstream__1), ((void (*)(void *__anonymous_object1645, _Bool __anonymous_object1646))__sepReset__F_R9sofstreamb__1), ((const char *(*)(void *__anonymous_object1647))__sepGetCur__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1648, const char *__anonymous_object1649))__sepSetCur__F_R9sofstreamPCc__1), ((_Bool (*)(void *__anonymous_object1650))__getNL__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1651, _Bool __anonymous_object1652))__setNL__F_R9sofstreamb__1), ((void (*)(void *__anonymous_object1653))__sepOn__F_R9sofstream__1), ((void (*)(void *__anonymous_object1654))__sepOff__F_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1655))__sepDisable__Fb_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1656))__sepEnable__Fb_R9sofstream__1), ((const char *(*)(void *__anonymous_object1657))__sepGet__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1658, const char *__anonymous_object1659))__sepSet__F_R9sofstreamPCc__1), ((const char *(*)(void *__anonymous_object1660))__sepGetTuple__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1661, const char *__anonymous_object1662))__sepSetTuple__F_R9sofstreamPCc__1), ((signed int (*)(void *__anonymous_object1663))__fail__Fi_R9sofstream__1), ((signed int (*)(void *__anonymous_object1664))__flush__Fi_R9sofstream__1), ((void (*)(void *__os__R7tostype_1, const char *__name__PCc_1, const char *__mode__PCc_1))__open__F_R9sofstreamPCcPCc__1), ((void (*)(void *__os__R7tostype_1))__close__F_R9sofstream__1), ((void *(*)(void *__anonymous_object1665, const char *__anonymous_object1666, unsigned long int __anonymous_object1667))__write__FR9sofstream_R9sofstreamPCcUl__1), ((signed int (*)(void *__anonymous_object1668, const char *__fmt__PCc_1, ...))__fmt__Fi_R9sofstreamPCc__1), ((void *)_p0));
     562    }
     563    ((void)(((void)(_tmp_cp_ret10=((struct ofstream *)___operator_bitor__A0_1_0_0___sepPrt__PFb_Rd0___sepReset__PF_Rd0___sepReset__PF_Rd0b___sepGetCur__PFPCc_Rd0___sepSetCur__PF_Rd0PCc___getNL__PFb_Rd0___setNL__PF_Rd0b___sepOn__PF_Rd0___sepOff__PF_Rd0___sepDisable__PFb_Rd0___sepEnable__PFb_Rd0___sepGet__PFPCc_Rd0___sepSet__PF_Rd0PCc___sepGetTuple__PFPCc_Rd0___sepSetTuple__PF_Rd0PCc___fail__PFi_Rd0___flush__PFi_Rd0___open__PF_Rd0PCcPCc___close__PF_Rd0___write__PFRd0_Rd0PCcUl___fmt__PFi_Rd0PCc__FRd0_Rd0PFRd0_Rd0___1(((_Bool (*)(void *__anonymous_object1669))__sepPrt__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1670))__sepReset__F_R9sofstream__1), ((void (*)(void *__anonymous_object1671, _Bool __anonymous_object1672))__sepReset__F_R9sofstreamb__1), ((const char *(*)(void *__anonymous_object1673))__sepGetCur__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1674, const char *__anonymous_object1675))__sepSetCur__F_R9sofstreamPCc__1), ((_Bool (*)(void 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*__os__R7tostype_1, const char *__name__PCc_1, const char *__mode__PCc_1))__open__F_R9sofstreamPCcPCc__1), ((void (*)(void *__os__R7tostype_1))__close__F_R9sofstream__1), ((void *(*)(void *__anonymous_object1691, const char *__anonymous_object1692, unsigned long int __anonymous_object1693))__write__FR9sofstream_R9sofstreamPCcUl__1), ((signed int (*)(void *__anonymous_object1694, const char *__fmt__PCc_1, ...))__fmt__Fi_R9sofstreamPCc__1), ((void *)(((void)(_tmp_cp_ret9=((struct ofstream *)___operator_bitor__A0_1_0_0___sepPrt__PFb_Rd0___sepReset__PF_Rd0___sepReset__PF_Rd0b___sepGetCur__PFPCc_Rd0___sepSetCur__PF_Rd0PCc___getNL__PFb_Rd0___setNL__PF_Rd0b___sepOn__PF_Rd0___sepOff__PF_Rd0___sepDisable__PFb_Rd0___sepEnable__PFb_Rd0___sepGet__PFPCc_Rd0___sepSet__PF_Rd0PCc___sepGetTuple__PFPCc_Rd0___sepSetTuple__PF_Rd0PCc___fail__PFi_Rd0___flush__PFi_Rd0___open__PF_Rd0PCcPCc___close__PF_Rd0___write__PFRd0_Rd0PCcUl___fmt__PFi_Rd0PCc__FRd0_Rd0Uc__1(((_Bool (*)(void 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*__anonymous_object1710, const char *__anonymous_object1711))__sepSet__F_R9sofstreamPCc__1), ((const char *(*)(void *__anonymous_object1712))__sepGetTuple__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1713, const char *__anonymous_object1714))__sepSetTuple__F_R9sofstreamPCc__1), ((signed int (*)(void *__anonymous_object1715))__fail__Fi_R9sofstream__1), ((signed int (*)(void *__anonymous_object1716))__flush__Fi_R9sofstream__1), ((void (*)(void *__os__R7tostype_1, const char *__name__PCc_1, const char *__mode__PCc_1))__open__F_R9sofstreamPCcPCc__1), ((void (*)(void *__os__R7tostype_1))__close__F_R9sofstream__1), ((void *(*)(void *__anonymous_object1717, const char *__anonymous_object1718, unsigned long int __anonymous_object1719))__write__FR9sofstream_R9sofstreamPCcUl__1), ((signed int (*)(void *__anonymous_object1720, const char *__fmt__PCc_1, ...))__fmt__Fi_R9sofstreamPCc__1), ((void *)(((void)(_tmp_cp_ret8=((struct ofstream *)___operator_bitor__A0_1_0_0___sepPrt__PFb_Rd0___sepReset__PF_Rd0___sepReset__PF_Rd0b___sepGetCur__PFPCc_Rd0___sepSetCur__PF_Rd0PCc___getNL__PFb_Rd0___setNL__PF_Rd0b___sepOn__PF_Rd0___sepOff__PF_Rd0___sepDisable__PFb_Rd0___sepEnable__PFb_Rd0___sepGet__PFPCc_Rd0___sepSet__PF_Rd0PCc___sepGetTuple__PFPCc_Rd0___sepSetTuple__PF_Rd0PCc___fail__PFi_Rd0___flush__PFi_Rd0___open__PF_Rd0PCcPCc___close__PF_Rd0___write__PFRd0_Rd0PCcUl___fmt__PFi_Rd0PCc__FRd0_Rd0PCc__1(((_Bool (*)(void *__anonymous_object1721))__sepPrt__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1722))__sepReset__F_R9sofstream__1), ((void (*)(void *__anonymous_object1723, _Bool __anonymous_object1724))__sepReset__F_R9sofstreamb__1), ((const char *(*)(void *__anonymous_object1725))__sepGetCur__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1726, const char *__anonymous_object1727))__sepSetCur__F_R9sofstreamPCc__1), ((_Bool (*)(void *__anonymous_object1728))__getNL__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1729, _Bool __anonymous_object1730))__setNL__F_R9sofstreamb__1), ((void (*)(void *__anonymous_object1731))__sepOn__F_R9sofstream__1), ((void (*)(void *__anonymous_object1732))__sepOff__F_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1733))__sepDisable__Fb_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1734))__sepEnable__Fb_R9sofstream__1), ((const char *(*)(void *__anonymous_object1735))__sepGet__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1736, const char *__anonymous_object1737))__sepSet__F_R9sofstreamPCc__1), ((const char *(*)(void *__anonymous_object1738))__sepGetTuple__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1739, const char *__anonymous_object1740))__sepSetTuple__F_R9sofstreamPCc__1), ((signed int (*)(void *__anonymous_object1741))__fail__Fi_R9sofstream__1), ((signed int (*)(void *__anonymous_object1742))__flush__Fi_R9sofstream__1), ((void (*)(void *__os__R7tostype_1, const char *__name__PCc_1, const char *__mode__PCc_1))__open__F_R9sofstreamPCcPCc__1), ((void (*)(void *__os__R7tostype_1))__close__F_R9sofstream__1), ((void *(*)(void *__anonymous_object1743, const char *__anonymous_object1744, unsigned long int __anonymous_object1745))__write__FR9sofstream_R9sofstreamPCcUl__1), ((signed int (*)(void *__anonymous_object1746, const char *__fmt__PCc_1, ...))__fmt__Fi_R9sofstreamPCc__1), ((void *)__sout__R9sofstream_1), "unsigned char ")))) , _tmp_cp_ret8)), __v__Uc_1)))) , _tmp_cp_ret9)), ((void *(*)(void *__anonymous_object1747))(&_thunk2)))))) , _tmp_cp_ret10));
    494564}
    495565void __f__F_s__1(signed short int __v__s_1){
     
    498568    struct ofstream *_tmp_cp_ret13;
    499569    __attribute__ ((unused)) struct ofstream *_thunk3(struct ofstream *_p0){
    500         return __endl__A0_1_0_0___sepPrt__PFb_Rd0___sepReset__PF_Rd0___sepReset__PF_Rd0b___sepGetCur__PFPCc_Rd0___sepSetCur__PF_Rd0PCc___getNL__PFb_Rd0___setNL__PF_Rd0b___sepOn__PF_Rd0___sepOff__PF_Rd0___sepDisable__PFb_Rd0___sepEnable__PFb_Rd0___sepGet__PFPCc_Rd0___sepSet__PF_Rd0PCc___sepGetTuple__PFPCc_Rd0___sepSetTuple__PF_Rd0PCc___fail__PFi_Rd0___flush__PFi_Rd0___open__PF_Rd0PCcPCc___close__PF_Rd0___write__PFRd0_Rd0PCcUl___fmt__PFi_Rd0PCc__FRd0_Rd0__1(((_Bool (*)(void *__anonymous_object1694))__sepPrt__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1695))__sepReset__F_R9sofstream__1), ((void (*)(void *__anonymous_object1696, _Bool __anonymous_object1697))__sepReset__F_R9sofstreamb__1), ((const char *(*)(void *__anonymous_object1698))__sepGetCur__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1699, const char *__anonymous_object1700))__sepSetCur__F_R9sofstreamPCc__1), ((_Bool (*)(void *__anonymous_object1701))__getNL__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1702, _Bool __anonymous_object1703))__setNL__F_R9sofstreamb__1), ((void (*)(void *__anonymous_object1704))__sepOn__F_R9sofstream__1), ((void (*)(void *__anonymous_object1705))__sepOff__F_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1706))__sepDisable__Fb_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1707))__sepEnable__Fb_R9sofstream__1), ((const char *(*)(void *__anonymous_object1708))__sepGet__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1709, const char *__anonymous_object1710))__sepSet__F_R9sofstreamPCc__1), ((const char *(*)(void *__anonymous_object1711))__sepGetTuple__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1712, const char *__anonymous_object1713))__sepSetTuple__F_R9sofstreamPCc__1), ((signed int (*)(void *__anonymous_object1714))__fail__Fi_R9sofstream__1), ((signed int (*)(void *__anonymous_object1715))__flush__Fi_R9sofstream__1), ((void (*)(void *__os__R7tostype_1, const char *__name__PCc_1, const char *__mode__PCc_1))__open__F_R9sofstreamPCcPCc__1), ((void (*)(void *__os__R7tostype_1))__close__F_R9sofstream__1), ((void *(*)(void *__anonymous_object1716, const char *__anonymous_object1717, unsigned long int __anonymous_object1718))__write__FR9sofstream_R9sofstreamPCcUl__1), ((signed int (*)(void *__anonymous_object1719, const char *__fmt__PCc_1, ...))__fmt__Fi_R9sofstreamPCc__1), ((void *)_p0));
    501     }
    502     ((void)(((void)(_tmp_cp_ret13=((struct ofstream *)___operator_bitor__A0_1_0_0___sepPrt__PFb_Rd0___sepReset__PF_Rd0___sepReset__PF_Rd0b___sepGetCur__PFPCc_Rd0___sepSetCur__PF_Rd0PCc___getNL__PFb_Rd0___setNL__PF_Rd0b___sepOn__PF_Rd0___sepOff__PF_Rd0___sepDisable__PFb_Rd0___sepEnable__PFb_Rd0___sepGet__PFPCc_Rd0___sepSet__PF_Rd0PCc___sepGetTuple__PFPCc_Rd0___sepSetTuple__PF_Rd0PCc___fail__PFi_Rd0___flush__PFi_Rd0___open__PF_Rd0PCcPCc___close__PF_Rd0___write__PFRd0_Rd0PCcUl___fmt__PFi_Rd0PCc__FRd0_Rd0PFRd0_Rd0___1(((_Bool (*)(void *__anonymous_object1720))__sepPrt__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1721))__sepReset__F_R9sofstream__1), ((void (*)(void *__anonymous_object1722, _Bool __anonymous_object1723))__sepReset__F_R9sofstreamb__1), ((const char *(*)(void *__anonymous_object1724))__sepGetCur__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1725, const char *__anonymous_object1726))__sepSetCur__F_R9sofstreamPCc__1), ((_Bool (*)(void *__anonymous_object1727))__getNL__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1728, _Bool __anonymous_object1729))__setNL__F_R9sofstreamb__1), ((void (*)(void *__anonymous_object1730))__sepOn__F_R9sofstream__1), ((void (*)(void *__anonymous_object1731))__sepOff__F_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1732))__sepDisable__Fb_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1733))__sepEnable__Fb_R9sofstream__1), ((const char *(*)(void *__anonymous_object1734))__sepGet__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1735, const char *__anonymous_object1736))__sepSet__F_R9sofstreamPCc__1), ((const char *(*)(void *__anonymous_object1737))__sepGetTuple__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1738, const char *__anonymous_object1739))__sepSetTuple__F_R9sofstreamPCc__1), ((signed int (*)(void *__anonymous_object1740))__fail__Fi_R9sofstream__1), ((signed int (*)(void *__anonymous_object1741))__flush__Fi_R9sofstream__1), ((void (*)(void *__os__R7tostype_1, const char *__name__PCc_1, const char *__mode__PCc_1))__open__F_R9sofstreamPCcPCc__1), ((void (*)(void *__os__R7tostype_1))__close__F_R9sofstream__1), ((void *(*)(void *__anonymous_object1742, const char *__anonymous_object1743, unsigned long int __anonymous_object1744))__write__FR9sofstream_R9sofstreamPCcUl__1), ((signed int (*)(void *__anonymous_object1745, const char *__fmt__PCc_1, ...))__fmt__Fi_R9sofstreamPCc__1), ((void *)(((void)(_tmp_cp_ret12=((struct ofstream *)___operator_bitor__A0_1_0_0___sepPrt__PFb_Rd0___sepReset__PF_Rd0___sepReset__PF_Rd0b___sepGetCur__PFPCc_Rd0___sepSetCur__PF_Rd0PCc___getNL__PFb_Rd0___setNL__PF_Rd0b___sepOn__PF_Rd0___sepOff__PF_Rd0___sepDisable__PFb_Rd0___sepEnable__PFb_Rd0___sepGet__PFPCc_Rd0___sepSet__PF_Rd0PCc___sepGetTuple__PFPCc_Rd0___sepSetTuple__PF_Rd0PCc___fail__PFi_Rd0___flush__PFi_Rd0___open__PF_Rd0PCcPCc___close__PF_Rd0___write__PFRd0_Rd0PCcUl___fmt__PFi_Rd0PCc__FRd0_Rd0s__1(((_Bool (*)(void *__anonymous_object1746))__sepPrt__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1747))__sepReset__F_R9sofstream__1), ((void (*)(void *__anonymous_object1748, _Bool __anonymous_object1749))__sepReset__F_R9sofstreamb__1), ((const char *(*)(void *__anonymous_object1750))__sepGetCur__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1751, const char *__anonymous_object1752))__sepSetCur__F_R9sofstreamPCc__1), ((_Bool (*)(void *__anonymous_object1753))__getNL__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1754, _Bool __anonymous_object1755))__setNL__F_R9sofstreamb__1), ((void (*)(void *__anonymous_object1756))__sepOn__F_R9sofstream__1), ((void (*)(void *__anonymous_object1757))__sepOff__F_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1758))__sepDisable__Fb_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1759))__sepEnable__Fb_R9sofstream__1), ((const char *(*)(void *__anonymous_object1760))__sepGet__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1761, const char *__anonymous_object1762))__sepSet__F_R9sofstreamPCc__1), ((const char *(*)(void *__anonymous_object1763))__sepGetTuple__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1764, const char *__anonymous_object1765))__sepSetTuple__F_R9sofstreamPCc__1), ((signed int (*)(void *__anonymous_object1766))__fail__Fi_R9sofstream__1), ((signed int (*)(void *__anonymous_object1767))__flush__Fi_R9sofstream__1), ((void (*)(void *__os__R7tostype_1, const char *__name__PCc_1, const char *__mode__PCc_1))__open__F_R9sofstreamPCcPCc__1), ((void (*)(void *__os__R7tostype_1))__close__F_R9sofstream__1), ((void *(*)(void *__anonymous_object1768, const char *__anonymous_object1769, unsigned long int __anonymous_object1770))__write__FR9sofstream_R9sofstreamPCcUl__1), ((signed int (*)(void *__anonymous_object1771, const char *__fmt__PCc_1, ...))__fmt__Fi_R9sofstreamPCc__1), ((void *)(((void)(_tmp_cp_ret11=((struct ofstream *)___operator_bitor__A0_1_0_0___sepPrt__PFb_Rd0___sepReset__PF_Rd0___sepReset__PF_Rd0b___sepGetCur__PFPCc_Rd0___sepSetCur__PF_Rd0PCc___getNL__PFb_Rd0___setNL__PF_Rd0b___sepOn__PF_Rd0___sepOff__PF_Rd0___sepDisable__PFb_Rd0___sepEnable__PFb_Rd0___sepGet__PFPCc_Rd0___sepSet__PF_Rd0PCc___sepGetTuple__PFPCc_Rd0___sepSetTuple__PF_Rd0PCc___fail__PFi_Rd0___flush__PFi_Rd0___open__PF_Rd0PCcPCc___close__PF_Rd0___write__PFRd0_Rd0PCcUl___fmt__PFi_Rd0PCc__FRd0_Rd0PCc__1(((_Bool (*)(void *__anonymous_object1772))__sepPrt__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1773))__sepReset__F_R9sofstream__1), ((void (*)(void *__anonymous_object1774, _Bool __anonymous_object1775))__sepReset__F_R9sofstreamb__1), ((const char *(*)(void *__anonymous_object1776))__sepGetCur__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1777, const char *__anonymous_object1778))__sepSetCur__F_R9sofstreamPCc__1), ((_Bool (*)(void *__anonymous_object1779))__getNL__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1780, _Bool __anonymous_object1781))__setNL__F_R9sofstreamb__1), ((void (*)(void *__anonymous_object1782))__sepOn__F_R9sofstream__1), ((void (*)(void *__anonymous_object1783))__sepOff__F_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1784))__sepDisable__Fb_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1785))__sepEnable__Fb_R9sofstream__1), ((const char *(*)(void *__anonymous_object1786))__sepGet__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1787, const char *__anonymous_object1788))__sepSet__F_R9sofstreamPCc__1), ((const char *(*)(void *__anonymous_object1789))__sepGetTuple__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1790, const char *__anonymous_object1791))__sepSetTuple__F_R9sofstreamPCc__1), ((signed int (*)(void *__anonymous_object1792))__fail__Fi_R9sofstream__1), ((signed int (*)(void *__anonymous_object1793))__flush__Fi_R9sofstream__1), ((void (*)(void *__os__R7tostype_1, const char *__name__PCc_1, const char *__mode__PCc_1))__open__F_R9sofstreamPCcPCc__1), ((void (*)(void *__os__R7tostype_1))__close__F_R9sofstream__1), ((void *(*)(void *__anonymous_object1794, const char *__anonymous_object1795, unsigned long int __anonymous_object1796))__write__FR9sofstream_R9sofstreamPCcUl__1), ((signed int (*)(void *__anonymous_object1797, const char *__fmt__PCc_1, ...))__fmt__Fi_R9sofstreamPCc__1), ((void *)__sout__R9sofstream_1), "signed short int")))) , _tmp_cp_ret11)), __v__s_1)))) , _tmp_cp_ret12)), ((void *(*)(void *__anonymous_object1798))(&_thunk3)))))) , _tmp_cp_ret13));
     570        return __endl__A0_1_0_0___sepPrt__PFb_Rd0___sepReset__PF_Rd0___sepReset__PF_Rd0b___sepGetCur__PFPCc_Rd0___sepSetCur__PF_Rd0PCc___getNL__PFb_Rd0___setNL__PF_Rd0b___sepOn__PF_Rd0___sepOff__PF_Rd0___sepDisable__PFb_Rd0___sepEnable__PFb_Rd0___sepGet__PFPCc_Rd0___sepSet__PF_Rd0PCc___sepGetTuple__PFPCc_Rd0___sepSetTuple__PF_Rd0PCc___fail__PFi_Rd0___flush__PFi_Rd0___open__PF_Rd0PCcPCc___close__PF_Rd0___write__PFRd0_Rd0PCcUl___fmt__PFi_Rd0PCc__FRd0_Rd0__1(((_Bool (*)(void *__anonymous_object1748))__sepPrt__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1749))__sepReset__F_R9sofstream__1), ((void (*)(void *__anonymous_object1750, _Bool __anonymous_object1751))__sepReset__F_R9sofstreamb__1), ((const char *(*)(void *__anonymous_object1752))__sepGetCur__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1753, const char *__anonymous_object1754))__sepSetCur__F_R9sofstreamPCc__1), ((_Bool (*)(void *__anonymous_object1755))__getNL__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1756, _Bool __anonymous_object1757))__setNL__F_R9sofstreamb__1), ((void (*)(void *__anonymous_object1758))__sepOn__F_R9sofstream__1), ((void (*)(void *__anonymous_object1759))__sepOff__F_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1760))__sepDisable__Fb_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1761))__sepEnable__Fb_R9sofstream__1), ((const char *(*)(void *__anonymous_object1762))__sepGet__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1763, const char *__anonymous_object1764))__sepSet__F_R9sofstreamPCc__1), ((const char *(*)(void *__anonymous_object1765))__sepGetTuple__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1766, const char *__anonymous_object1767))__sepSetTuple__F_R9sofstreamPCc__1), ((signed int (*)(void *__anonymous_object1768))__fail__Fi_R9sofstream__1), ((signed int (*)(void *__anonymous_object1769))__flush__Fi_R9sofstream__1), ((void (*)(void *__os__R7tostype_1, const char *__name__PCc_1, const char *__mode__PCc_1))__open__F_R9sofstreamPCcPCc__1), ((void (*)(void *__os__R7tostype_1))__close__F_R9sofstream__1), ((void *(*)(void *__anonymous_object1770, const char *__anonymous_object1771, unsigned long int __anonymous_object1772))__write__FR9sofstream_R9sofstreamPCcUl__1), ((signed int (*)(void *__anonymous_object1773, const char *__fmt__PCc_1, ...))__fmt__Fi_R9sofstreamPCc__1), ((void *)_p0));
     571    }
     572    ((void)(((void)(_tmp_cp_ret13=((struct ofstream *)___operator_bitor__A0_1_0_0___sepPrt__PFb_Rd0___sepReset__PF_Rd0___sepReset__PF_Rd0b___sepGetCur__PFPCc_Rd0___sepSetCur__PF_Rd0PCc___getNL__PFb_Rd0___setNL__PF_Rd0b___sepOn__PF_Rd0___sepOff__PF_Rd0___sepDisable__PFb_Rd0___sepEnable__PFb_Rd0___sepGet__PFPCc_Rd0___sepSet__PF_Rd0PCc___sepGetTuple__PFPCc_Rd0___sepSetTuple__PF_Rd0PCc___fail__PFi_Rd0___flush__PFi_Rd0___open__PF_Rd0PCcPCc___close__PF_Rd0___write__PFRd0_Rd0PCcUl___fmt__PFi_Rd0PCc__FRd0_Rd0PFRd0_Rd0___1(((_Bool (*)(void *__anonymous_object1774))__sepPrt__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1775))__sepReset__F_R9sofstream__1), ((void (*)(void *__anonymous_object1776, _Bool __anonymous_object1777))__sepReset__F_R9sofstreamb__1), ((const char *(*)(void *__anonymous_object1778))__sepGetCur__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1779, const char *__anonymous_object1780))__sepSetCur__F_R9sofstreamPCc__1), ((_Bool (*)(void *__anonymous_object1781))__getNL__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1782, _Bool __anonymous_object1783))__setNL__F_R9sofstreamb__1), ((void (*)(void *__anonymous_object1784))__sepOn__F_R9sofstream__1), ((void (*)(void *__anonymous_object1785))__sepOff__F_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1786))__sepDisable__Fb_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1787))__sepEnable__Fb_R9sofstream__1), ((const char *(*)(void *__anonymous_object1788))__sepGet__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1789, const char *__anonymous_object1790))__sepSet__F_R9sofstreamPCc__1), ((const char *(*)(void *__anonymous_object1791))__sepGetTuple__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1792, const char *__anonymous_object1793))__sepSetTuple__F_R9sofstreamPCc__1), ((signed int (*)(void *__anonymous_object1794))__fail__Fi_R9sofstream__1), ((signed int (*)(void *__anonymous_object1795))__flush__Fi_R9sofstream__1), ((void (*)(void *__os__R7tostype_1, const char *__name__PCc_1, const char *__mode__PCc_1))__open__F_R9sofstreamPCcPCc__1), ((void (*)(void *__os__R7tostype_1))__close__F_R9sofstream__1), ((void *(*)(void *__anonymous_object1796, const char *__anonymous_object1797, unsigned long int __anonymous_object1798))__write__FR9sofstream_R9sofstreamPCcUl__1), ((signed int (*)(void *__anonymous_object1799, const char *__fmt__PCc_1, ...))__fmt__Fi_R9sofstreamPCc__1), ((void *)(((void)(_tmp_cp_ret12=((struct ofstream *)___operator_bitor__A0_1_0_0___sepPrt__PFb_Rd0___sepReset__PF_Rd0___sepReset__PF_Rd0b___sepGetCur__PFPCc_Rd0___sepSetCur__PF_Rd0PCc___getNL__PFb_Rd0___setNL__PF_Rd0b___sepOn__PF_Rd0___sepOff__PF_Rd0___sepDisable__PFb_Rd0___sepEnable__PFb_Rd0___sepGet__PFPCc_Rd0___sepSet__PF_Rd0PCc___sepGetTuple__PFPCc_Rd0___sepSetTuple__PF_Rd0PCc___fail__PFi_Rd0___flush__PFi_Rd0___open__PF_Rd0PCcPCc___close__PF_Rd0___write__PFRd0_Rd0PCcUl___fmt__PFi_Rd0PCc__FRd0_Rd0s__1(((_Bool (*)(void 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*__mode__PCc_1))__open__F_R9sofstreamPCcPCc__1), ((void (*)(void *__os__R7tostype_1))__close__F_R9sofstream__1), ((void *(*)(void *__anonymous_object1848, const char *__anonymous_object1849, unsigned long int __anonymous_object1850))__write__FR9sofstream_R9sofstreamPCcUl__1), ((signed int (*)(void *__anonymous_object1851, const char *__fmt__PCc_1, ...))__fmt__Fi_R9sofstreamPCc__1), ((void *)__sout__R9sofstream_1), "signed short int")))) , _tmp_cp_ret11)), __v__s_1)))) , _tmp_cp_ret12)), ((void *(*)(void *__anonymous_object1852))(&_thunk3)))))) , _tmp_cp_ret13));
    503573}
    504574void __f__F_Us__1(unsigned short int __v__Us_1){
     
    507577    struct ofstream *_tmp_cp_ret16;
    508578    __attribute__ ((unused)) struct ofstream *_thunk4(struct ofstream *_p0){
    509         return __endl__A0_1_0_0___sepPrt__PFb_Rd0___sepReset__PF_Rd0___sepReset__PF_Rd0b___sepGetCur__PFPCc_Rd0___sepSetCur__PF_Rd0PCc___getNL__PFb_Rd0___setNL__PF_Rd0b___sepOn__PF_Rd0___sepOff__PF_Rd0___sepDisable__PFb_Rd0___sepEnable__PFb_Rd0___sepGet__PFPCc_Rd0___sepSet__PF_Rd0PCc___sepGetTuple__PFPCc_Rd0___sepSetTuple__PF_Rd0PCc___fail__PFi_Rd0___flush__PFi_Rd0___open__PF_Rd0PCcPCc___close__PF_Rd0___write__PFRd0_Rd0PCcUl___fmt__PFi_Rd0PCc__FRd0_Rd0__1(((_Bool (*)(void *__anonymous_object1799))__sepPrt__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1800))__sepReset__F_R9sofstream__1), ((void (*)(void *__anonymous_object1801, _Bool __anonymous_object1802))__sepReset__F_R9sofstreamb__1), ((const char *(*)(void *__anonymous_object1803))__sepGetCur__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1804, const char *__anonymous_object1805))__sepSetCur__F_R9sofstreamPCc__1), ((_Bool (*)(void *__anonymous_object1806))__getNL__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1807, _Bool __anonymous_object1808))__setNL__F_R9sofstreamb__1), ((void (*)(void *__anonymous_object1809))__sepOn__F_R9sofstream__1), ((void (*)(void *__anonymous_object1810))__sepOff__F_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1811))__sepDisable__Fb_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1812))__sepEnable__Fb_R9sofstream__1), ((const char *(*)(void *__anonymous_object1813))__sepGet__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1814, const char *__anonymous_object1815))__sepSet__F_R9sofstreamPCc__1), ((const char *(*)(void *__anonymous_object1816))__sepGetTuple__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1817, const char *__anonymous_object1818))__sepSetTuple__F_R9sofstreamPCc__1), ((signed int (*)(void *__anonymous_object1819))__fail__Fi_R9sofstream__1), ((signed int (*)(void *__anonymous_object1820))__flush__Fi_R9sofstream__1), ((void (*)(void *__os__R7tostype_1, const char *__name__PCc_1, const char *__mode__PCc_1))__open__F_R9sofstreamPCcPCc__1), ((void (*)(void *__os__R7tostype_1))__close__F_R9sofstream__1), ((void *(*)(void *__anonymous_object1821, const char *__anonymous_object1822, unsigned long int __anonymous_object1823))__write__FR9sofstream_R9sofstreamPCcUl__1), ((signed int (*)(void *__anonymous_object1824, const char *__fmt__PCc_1, ...))__fmt__Fi_R9sofstreamPCc__1), ((void *)_p0));
    510     }
    511     ((void)(((void)(_tmp_cp_ret16=((struct ofstream *)___operator_bitor__A0_1_0_0___sepPrt__PFb_Rd0___sepReset__PF_Rd0___sepReset__PF_Rd0b___sepGetCur__PFPCc_Rd0___sepSetCur__PF_Rd0PCc___getNL__PFb_Rd0___setNL__PF_Rd0b___sepOn__PF_Rd0___sepOff__PF_Rd0___sepDisable__PFb_Rd0___sepEnable__PFb_Rd0___sepGet__PFPCc_Rd0___sepSet__PF_Rd0PCc___sepGetTuple__PFPCc_Rd0___sepSetTuple__PF_Rd0PCc___fail__PFi_Rd0___flush__PFi_Rd0___open__PF_Rd0PCcPCc___close__PF_Rd0___write__PFRd0_Rd0PCcUl___fmt__PFi_Rd0PCc__FRd0_Rd0PFRd0_Rd0___1(((_Bool (*)(void *__anonymous_object1825))__sepPrt__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1826))__sepReset__F_R9sofstream__1), ((void (*)(void *__anonymous_object1827, _Bool __anonymous_object1828))__sepReset__F_R9sofstreamb__1), ((const char *(*)(void *__anonymous_object1829))__sepGetCur__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1830, const char *__anonymous_object1831))__sepSetCur__F_R9sofstreamPCc__1), ((_Bool (*)(void *__anonymous_object1832))__getNL__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1833, _Bool __anonymous_object1834))__setNL__F_R9sofstreamb__1), ((void (*)(void *__anonymous_object1835))__sepOn__F_R9sofstream__1), ((void (*)(void *__anonymous_object1836))__sepOff__F_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1837))__sepDisable__Fb_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1838))__sepEnable__Fb_R9sofstream__1), ((const char *(*)(void *__anonymous_object1839))__sepGet__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1840, const char *__anonymous_object1841))__sepSet__F_R9sofstreamPCc__1), ((const char *(*)(void *__anonymous_object1842))__sepGetTuple__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1843, const char *__anonymous_object1844))__sepSetTuple__F_R9sofstreamPCc__1), ((signed int (*)(void *__anonymous_object1845))__fail__Fi_R9sofstream__1), ((signed int (*)(void *__anonymous_object1846))__flush__Fi_R9sofstream__1), ((void (*)(void *__os__R7tostype_1, const char *__name__PCc_1, const char *__mode__PCc_1))__open__F_R9sofstreamPCcPCc__1), ((void (*)(void *__os__R7tostype_1))__close__F_R9sofstream__1), ((void *(*)(void *__anonymous_object1847, const char *__anonymous_object1848, unsigned long int __anonymous_object1849))__write__FR9sofstream_R9sofstreamPCcUl__1), ((signed int (*)(void *__anonymous_object1850, const char *__fmt__PCc_1, ...))__fmt__Fi_R9sofstreamPCc__1), ((void *)(((void)(_tmp_cp_ret15=((struct ofstream *)___operator_bitor__A0_1_0_0___sepPrt__PFb_Rd0___sepReset__PF_Rd0___sepReset__PF_Rd0b___sepGetCur__PFPCc_Rd0___sepSetCur__PF_Rd0PCc___getNL__PFb_Rd0___setNL__PF_Rd0b___sepOn__PF_Rd0___sepOff__PF_Rd0___sepDisable__PFb_Rd0___sepEnable__PFb_Rd0___sepGet__PFPCc_Rd0___sepSet__PF_Rd0PCc___sepGetTuple__PFPCc_Rd0___sepSetTuple__PF_Rd0PCc___fail__PFi_Rd0___flush__PFi_Rd0___open__PF_Rd0PCcPCc___close__PF_Rd0___write__PFRd0_Rd0PCcUl___fmt__PFi_Rd0PCc__FRd0_Rd0Us__1(((_Bool (*)(void *__anonymous_object1851))__sepPrt__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1852))__sepReset__F_R9sofstream__1), ((void (*)(void *__anonymous_object1853, _Bool __anonymous_object1854))__sepReset__F_R9sofstreamb__1), ((const char *(*)(void *__anonymous_object1855))__sepGetCur__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1856, const char *__anonymous_object1857))__sepSetCur__F_R9sofstreamPCc__1), ((_Bool (*)(void *__anonymous_object1858))__getNL__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1859, _Bool __anonymous_object1860))__setNL__F_R9sofstreamb__1), ((void (*)(void *__anonymous_object1861))__sepOn__F_R9sofstream__1), ((void (*)(void *__anonymous_object1862))__sepOff__F_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1863))__sepDisable__Fb_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1864))__sepEnable__Fb_R9sofstream__1), ((const char *(*)(void *__anonymous_object1865))__sepGet__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1866, const char *__anonymous_object1867))__sepSet__F_R9sofstreamPCc__1), ((const char *(*)(void *__anonymous_object1868))__sepGetTuple__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1869, const char *__anonymous_object1870))__sepSetTuple__F_R9sofstreamPCc__1), ((signed int (*)(void *__anonymous_object1871))__fail__Fi_R9sofstream__1), ((signed int (*)(void *__anonymous_object1872))__flush__Fi_R9sofstream__1), ((void (*)(void *__os__R7tostype_1, const char *__name__PCc_1, const char *__mode__PCc_1))__open__F_R9sofstreamPCcPCc__1), ((void (*)(void *__os__R7tostype_1))__close__F_R9sofstream__1), ((void *(*)(void *__anonymous_object1873, const char *__anonymous_object1874, unsigned long int __anonymous_object1875))__write__FR9sofstream_R9sofstreamPCcUl__1), ((signed int (*)(void *__anonymous_object1876, const char *__fmt__PCc_1, ...))__fmt__Fi_R9sofstreamPCc__1), ((void *)(((void)(_tmp_cp_ret14=((struct ofstream *)___operator_bitor__A0_1_0_0___sepPrt__PFb_Rd0___sepReset__PF_Rd0___sepReset__PF_Rd0b___sepGetCur__PFPCc_Rd0___sepSetCur__PF_Rd0PCc___getNL__PFb_Rd0___setNL__PF_Rd0b___sepOn__PF_Rd0___sepOff__PF_Rd0___sepDisable__PFb_Rd0___sepEnable__PFb_Rd0___sepGet__PFPCc_Rd0___sepSet__PF_Rd0PCc___sepGetTuple__PFPCc_Rd0___sepSetTuple__PF_Rd0PCc___fail__PFi_Rd0___flush__PFi_Rd0___open__PF_Rd0PCcPCc___close__PF_Rd0___write__PFRd0_Rd0PCcUl___fmt__PFi_Rd0PCc__FRd0_Rd0PCc__1(((_Bool (*)(void *__anonymous_object1877))__sepPrt__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1878))__sepReset__F_R9sofstream__1), ((void (*)(void *__anonymous_object1879, _Bool __anonymous_object1880))__sepReset__F_R9sofstreamb__1), ((const char *(*)(void *__anonymous_object1881))__sepGetCur__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1882, const char *__anonymous_object1883))__sepSetCur__F_R9sofstreamPCc__1), ((_Bool (*)(void *__anonymous_object1884))__getNL__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1885, _Bool __anonymous_object1886))__setNL__F_R9sofstreamb__1), ((void (*)(void *__anonymous_object1887))__sepOn__F_R9sofstream__1), ((void (*)(void *__anonymous_object1888))__sepOff__F_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1889))__sepDisable__Fb_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1890))__sepEnable__Fb_R9sofstream__1), ((const char *(*)(void *__anonymous_object1891))__sepGet__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1892, const char *__anonymous_object1893))__sepSet__F_R9sofstreamPCc__1), ((const char *(*)(void *__anonymous_object1894))__sepGetTuple__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1895, const char *__anonymous_object1896))__sepSetTuple__F_R9sofstreamPCc__1), ((signed int (*)(void *__anonymous_object1897))__fail__Fi_R9sofstream__1), ((signed int (*)(void *__anonymous_object1898))__flush__Fi_R9sofstream__1), ((void (*)(void *__os__R7tostype_1, const char *__name__PCc_1, const char *__mode__PCc_1))__open__F_R9sofstreamPCcPCc__1), ((void (*)(void *__os__R7tostype_1))__close__F_R9sofstream__1), ((void *(*)(void *__anonymous_object1899, const char *__anonymous_object1900, unsigned long int __anonymous_object1901))__write__FR9sofstream_R9sofstreamPCcUl__1), ((signed int (*)(void *__anonymous_object1902, const char *__fmt__PCc_1, ...))__fmt__Fi_R9sofstreamPCc__1), ((void *)__sout__R9sofstream_1), "unsigned short int")))) , _tmp_cp_ret14)), __v__Us_1)))) , _tmp_cp_ret15)), ((void *(*)(void *__anonymous_object1903))(&_thunk4)))))) , _tmp_cp_ret16));
     579        return __endl__A0_1_0_0___sepPrt__PFb_Rd0___sepReset__PF_Rd0___sepReset__PF_Rd0b___sepGetCur__PFPCc_Rd0___sepSetCur__PF_Rd0PCc___getNL__PFb_Rd0___setNL__PF_Rd0b___sepOn__PF_Rd0___sepOff__PF_Rd0___sepDisable__PFb_Rd0___sepEnable__PFb_Rd0___sepGet__PFPCc_Rd0___sepSet__PF_Rd0PCc___sepGetTuple__PFPCc_Rd0___sepSetTuple__PF_Rd0PCc___fail__PFi_Rd0___flush__PFi_Rd0___open__PF_Rd0PCcPCc___close__PF_Rd0___write__PFRd0_Rd0PCcUl___fmt__PFi_Rd0PCc__FRd0_Rd0__1(((_Bool (*)(void *__anonymous_object1853))__sepPrt__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1854))__sepReset__F_R9sofstream__1), ((void (*)(void *__anonymous_object1855, _Bool __anonymous_object1856))__sepReset__F_R9sofstreamb__1), ((const char *(*)(void *__anonymous_object1857))__sepGetCur__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1858, const char *__anonymous_object1859))__sepSetCur__F_R9sofstreamPCc__1), ((_Bool (*)(void *__anonymous_object1860))__getNL__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1861, _Bool __anonymous_object1862))__setNL__F_R9sofstreamb__1), ((void (*)(void *__anonymous_object1863))__sepOn__F_R9sofstream__1), ((void (*)(void *__anonymous_object1864))__sepOff__F_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1865))__sepDisable__Fb_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1866))__sepEnable__Fb_R9sofstream__1), ((const char *(*)(void *__anonymous_object1867))__sepGet__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1868, const char *__anonymous_object1869))__sepSet__F_R9sofstreamPCc__1), ((const char *(*)(void *__anonymous_object1870))__sepGetTuple__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1871, const char *__anonymous_object1872))__sepSetTuple__F_R9sofstreamPCc__1), ((signed int (*)(void *__anonymous_object1873))__fail__Fi_R9sofstream__1), ((signed int (*)(void *__anonymous_object1874))__flush__Fi_R9sofstream__1), ((void (*)(void *__os__R7tostype_1, const char *__name__PCc_1, const char *__mode__PCc_1))__open__F_R9sofstreamPCcPCc__1), ((void (*)(void *__os__R7tostype_1))__close__F_R9sofstream__1), ((void *(*)(void *__anonymous_object1875, const char *__anonymous_object1876, unsigned long int __anonymous_object1877))__write__FR9sofstream_R9sofstreamPCcUl__1), ((signed int (*)(void *__anonymous_object1878, const char *__fmt__PCc_1, ...))__fmt__Fi_R9sofstreamPCc__1), ((void *)_p0));
     580    }
     581    ((void)(((void)(_tmp_cp_ret16=((struct ofstream *)___operator_bitor__A0_1_0_0___sepPrt__PFb_Rd0___sepReset__PF_Rd0___sepReset__PF_Rd0b___sepGetCur__PFPCc_Rd0___sepSetCur__PF_Rd0PCc___getNL__PFb_Rd0___setNL__PF_Rd0b___sepOn__PF_Rd0___sepOff__PF_Rd0___sepDisable__PFb_Rd0___sepEnable__PFb_Rd0___sepGet__PFPCc_Rd0___sepSet__PF_Rd0PCc___sepGetTuple__PFPCc_Rd0___sepSetTuple__PF_Rd0PCc___fail__PFi_Rd0___flush__PFi_Rd0___open__PF_Rd0PCcPCc___close__PF_Rd0___write__PFRd0_Rd0PCcUl___fmt__PFi_Rd0PCc__FRd0_Rd0PFRd0_Rd0___1(((_Bool (*)(void *__anonymous_object1879))__sepPrt__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1880))__sepReset__F_R9sofstream__1), ((void (*)(void *__anonymous_object1881, _Bool __anonymous_object1882))__sepReset__F_R9sofstreamb__1), ((const char *(*)(void *__anonymous_object1883))__sepGetCur__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1884, const char *__anonymous_object1885))__sepSetCur__F_R9sofstreamPCc__1), ((_Bool (*)(void 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    512582}
    513583void __f__F_Ul__1(unsigned long int __v__Ul_1){
     
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    519     }
    520     ((void)(((void)(_tmp_cp_ret19=((struct ofstream *)___operator_bitor__A0_1_0_0___sepPrt__PFb_Rd0___sepReset__PF_Rd0___sepReset__PF_Rd0b___sepGetCur__PFPCc_Rd0___sepSetCur__PF_Rd0PCc___getNL__PFb_Rd0___setNL__PF_Rd0b___sepOn__PF_Rd0___sepOff__PF_Rd0___sepDisable__PFb_Rd0___sepEnable__PFb_Rd0___sepGet__PFPCc_Rd0___sepSet__PF_Rd0PCc___sepGetTuple__PFPCc_Rd0___sepSetTuple__PF_Rd0PCc___fail__PFi_Rd0___flush__PFi_Rd0___open__PF_Rd0PCcPCc___close__PF_Rd0___write__PFRd0_Rd0PCcUl___fmt__PFi_Rd0PCc__FRd0_Rd0PFRd0_Rd0___1(((_Bool (*)(void *__anonymous_object1930))__sepPrt__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1931))__sepReset__F_R9sofstream__1), ((void (*)(void *__anonymous_object1932, _Bool __anonymous_object1933))__sepReset__F_R9sofstreamb__1), ((const char *(*)(void *__anonymous_object1934))__sepGetCur__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1935, const char *__anonymous_object1936))__sepSetCur__F_R9sofstreamPCc__1), ((_Bool (*)(void 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*__anonymous_object1990, _Bool __anonymous_object1991))__setNL__F_R9sofstreamb__1), ((void (*)(void *__anonymous_object1992))__sepOn__F_R9sofstream__1), ((void (*)(void *__anonymous_object1993))__sepOff__F_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1994))__sepDisable__Fb_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1995))__sepEnable__Fb_R9sofstream__1), ((const char *(*)(void *__anonymous_object1996))__sepGet__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1997, const char *__anonymous_object1998))__sepSet__F_R9sofstreamPCc__1), ((const char *(*)(void *__anonymous_object1999))__sepGetTuple__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object2000, const char *__anonymous_object2001))__sepSetTuple__F_R9sofstreamPCc__1), ((signed int (*)(void *__anonymous_object2002))__fail__Fi_R9sofstream__1), ((signed int (*)(void *__anonymous_object2003))__flush__Fi_R9sofstream__1), ((void (*)(void *__os__R7tostype_1, const char *__name__PCc_1, const char *__mode__PCc_1))__open__F_R9sofstreamPCcPCc__1), ((void (*)(void *__os__R7tostype_1))__close__F_R9sofstream__1), ((void *(*)(void *__anonymous_object2004, const char *__anonymous_object2005, unsigned long int __anonymous_object2006))__write__FR9sofstream_R9sofstreamPCcUl__1), ((signed int (*)(void *__anonymous_object2007, const char *__fmt__PCc_1, ...))__fmt__Fi_R9sofstreamPCc__1), ((void *)__sout__R9sofstream_1), "size_t")))) , _tmp_cp_ret17)), __v__Ul_1)))) , _tmp_cp_ret18)), ((void *(*)(void *__anonymous_object2008))(&_thunk5)))))) , _tmp_cp_ret19));
     588        return __endl__A0_1_0_0___sepPrt__PFb_Rd0___sepReset__PF_Rd0___sepReset__PF_Rd0b___sepGetCur__PFPCc_Rd0___sepSetCur__PF_Rd0PCc___getNL__PFb_Rd0___setNL__PF_Rd0b___sepOn__PF_Rd0___sepOff__PF_Rd0___sepDisable__PFb_Rd0___sepEnable__PFb_Rd0___sepGet__PFPCc_Rd0___sepSet__PF_Rd0PCc___sepGetTuple__PFPCc_Rd0___sepSetTuple__PF_Rd0PCc___fail__PFi_Rd0___flush__PFi_Rd0___open__PF_Rd0PCcPCc___close__PF_Rd0___write__PFRd0_Rd0PCcUl___fmt__PFi_Rd0PCc__FRd0_Rd0__1(((_Bool (*)(void *__anonymous_object1958))__sepPrt__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1959))__sepReset__F_R9sofstream__1), ((void (*)(void *__anonymous_object1960, _Bool __anonymous_object1961))__sepReset__F_R9sofstreamb__1), ((const char *(*)(void *__anonymous_object1962))__sepGetCur__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1963, const char *__anonymous_object1964))__sepSetCur__F_R9sofstreamPCc__1), ((_Bool (*)(void *__anonymous_object1965))__getNL__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1966, _Bool __anonymous_object1967))__setNL__F_R9sofstreamb__1), ((void (*)(void *__anonymous_object1968))__sepOn__F_R9sofstream__1), ((void (*)(void *__anonymous_object1969))__sepOff__F_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1970))__sepDisable__Fb_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1971))__sepEnable__Fb_R9sofstream__1), ((const char *(*)(void *__anonymous_object1972))__sepGet__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1973, const char *__anonymous_object1974))__sepSet__F_R9sofstreamPCc__1), ((const char *(*)(void *__anonymous_object1975))__sepGetTuple__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1976, const char *__anonymous_object1977))__sepSetTuple__F_R9sofstreamPCc__1), ((signed int (*)(void *__anonymous_object1978))__fail__Fi_R9sofstream__1), ((signed int (*)(void *__anonymous_object1979))__flush__Fi_R9sofstream__1), ((void (*)(void *__os__R7tostype_1, const char *__name__PCc_1, const char *__mode__PCc_1))__open__F_R9sofstreamPCcPCc__1), ((void (*)(void *__os__R7tostype_1))__close__F_R9sofstream__1), ((void *(*)(void *__anonymous_object1980, const char *__anonymous_object1981, unsigned long int __anonymous_object1982))__write__FR9sofstream_R9sofstreamPCcUl__1), ((signed int (*)(void *__anonymous_object1983, const char *__fmt__PCc_1, ...))__fmt__Fi_R9sofstreamPCc__1), ((void *)_p0));
     589    }
     590    ((void)(((void)(_tmp_cp_ret19=((struct ofstream *)___operator_bitor__A0_1_0_0___sepPrt__PFb_Rd0___sepReset__PF_Rd0___sepReset__PF_Rd0b___sepGetCur__PFPCc_Rd0___sepSetCur__PF_Rd0PCc___getNL__PFb_Rd0___setNL__PF_Rd0b___sepOn__PF_Rd0___sepOff__PF_Rd0___sepDisable__PFb_Rd0___sepEnable__PFb_Rd0___sepGet__PFPCc_Rd0___sepSet__PF_Rd0PCc___sepGetTuple__PFPCc_Rd0___sepSetTuple__PF_Rd0PCc___fail__PFi_Rd0___flush__PFi_Rd0___open__PF_Rd0PCcPCc___close__PF_Rd0___write__PFRd0_Rd0PCcUl___fmt__PFi_Rd0PCc__FRd0_Rd0PFRd0_Rd0___1(((_Bool (*)(void *__anonymous_object1984))__sepPrt__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1985))__sepReset__F_R9sofstream__1), ((void (*)(void *__anonymous_object1986, _Bool __anonymous_object1987))__sepReset__F_R9sofstreamb__1), ((const char *(*)(void *__anonymous_object1988))__sepGetCur__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1989, const char *__anonymous_object1990))__sepSetCur__F_R9sofstreamPCc__1), ((_Bool (*)(void *__anonymous_object1991))__getNL__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1992, _Bool __anonymous_object1993))__setNL__F_R9sofstreamb__1), ((void (*)(void *__anonymous_object1994))__sepOn__F_R9sofstream__1), ((void (*)(void *__anonymous_object1995))__sepOff__F_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1996))__sepDisable__Fb_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1997))__sepEnable__Fb_R9sofstream__1), ((const char *(*)(void *__anonymous_object1998))__sepGet__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1999, const char *__anonymous_object2000))__sepSet__F_R9sofstreamPCc__1), ((const char *(*)(void *__anonymous_object2001))__sepGetTuple__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object2002, const char *__anonymous_object2003))__sepSetTuple__F_R9sofstreamPCc__1), ((signed int (*)(void *__anonymous_object2004))__fail__Fi_R9sofstream__1), ((signed int (*)(void *__anonymous_object2005))__flush__Fi_R9sofstream__1), ((void (*)(void *__os__R7tostype_1, const char *__name__PCc_1, const char *__mode__PCc_1))__open__F_R9sofstreamPCcPCc__1), ((void (*)(void *__os__R7tostype_1))__close__F_R9sofstream__1), ((void *(*)(void *__anonymous_object2006, const char *__anonymous_object2007, unsigned long int __anonymous_object2008))__write__FR9sofstream_R9sofstreamPCcUl__1), ((signed int (*)(void *__anonymous_object2009, const char *__fmt__PCc_1, ...))__fmt__Fi_R9sofstreamPCc__1), ((void *)(((void)(_tmp_cp_ret18=((struct ofstream *)___operator_bitor__A0_1_0_0___sepPrt__PFb_Rd0___sepReset__PF_Rd0___sepReset__PF_Rd0b___sepGetCur__PFPCc_Rd0___sepSetCur__PF_Rd0PCc___getNL__PFb_Rd0___setNL__PF_Rd0b___sepOn__PF_Rd0___sepOff__PF_Rd0___sepDisable__PFb_Rd0___sepEnable__PFb_Rd0___sepGet__PFPCc_Rd0___sepSet__PF_Rd0PCc___sepGetTuple__PFPCc_Rd0___sepSetTuple__PF_Rd0PCc___fail__PFi_Rd0___flush__PFi_Rd0___open__PF_Rd0PCcPCc___close__PF_Rd0___write__PFRd0_Rd0PCcUl___fmt__PFi_Rd0PCc__FRd0_Rd0Ul__1(((_Bool (*)(void *__anonymous_object2010))__sepPrt__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object2011))__sepReset__F_R9sofstream__1), ((void (*)(void *__anonymous_object2012, _Bool __anonymous_object2013))__sepReset__F_R9sofstreamb__1), ((const char *(*)(void *__anonymous_object2014))__sepGetCur__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object2015, const char *__anonymous_object2016))__sepSetCur__F_R9sofstreamPCc__1), ((_Bool (*)(void *__anonymous_object2017))__getNL__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object2018, _Bool __anonymous_object2019))__setNL__F_R9sofstreamb__1), ((void (*)(void *__anonymous_object2020))__sepOn__F_R9sofstream__1), ((void (*)(void *__anonymous_object2021))__sepOff__F_R9sofstream__1), ((_Bool (*)(void *__anonymous_object2022))__sepDisable__Fb_R9sofstream__1), ((_Bool (*)(void *__anonymous_object2023))__sepEnable__Fb_R9sofstream__1), ((const char *(*)(void *__anonymous_object2024))__sepGet__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object2025, const char *__anonymous_object2026))__sepSet__F_R9sofstreamPCc__1), ((const char *(*)(void *__anonymous_object2027))__sepGetTuple__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object2028, const char *__anonymous_object2029))__sepSetTuple__F_R9sofstreamPCc__1), ((signed int (*)(void *__anonymous_object2030))__fail__Fi_R9sofstream__1), ((signed int (*)(void *__anonymous_object2031))__flush__Fi_R9sofstream__1), ((void (*)(void *__os__R7tostype_1, const char *__name__PCc_1, const char *__mode__PCc_1))__open__F_R9sofstreamPCcPCc__1), ((void (*)(void *__os__R7tostype_1))__close__F_R9sofstream__1), ((void *(*)(void *__anonymous_object2032, const char *__anonymous_object2033, unsigned long int __anonymous_object2034))__write__FR9sofstream_R9sofstreamPCcUl__1), ((signed int (*)(void *__anonymous_object2035, const char *__fmt__PCc_1, ...))__fmt__Fi_R9sofstreamPCc__1), ((void *)(((void)(_tmp_cp_ret17=((struct ofstream *)___operator_bitor__A0_1_0_0___sepPrt__PFb_Rd0___sepReset__PF_Rd0___sepReset__PF_Rd0b___sepGetCur__PFPCc_Rd0___sepSetCur__PF_Rd0PCc___getNL__PFb_Rd0___setNL__PF_Rd0b___sepOn__PF_Rd0___sepOff__PF_Rd0___sepDisable__PFb_Rd0___sepEnable__PFb_Rd0___sepGet__PFPCc_Rd0___sepSet__PF_Rd0PCc___sepGetTuple__PFPCc_Rd0___sepSetTuple__PF_Rd0PCc___fail__PFi_Rd0___flush__PFi_Rd0___open__PF_Rd0PCcPCc___close__PF_Rd0___write__PFRd0_Rd0PCcUl___fmt__PFi_Rd0PCc__FRd0_Rd0PCc__1(((_Bool (*)(void *__anonymous_object2036))__sepPrt__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object2037))__sepReset__F_R9sofstream__1), ((void (*)(void *__anonymous_object2038, _Bool __anonymous_object2039))__sepReset__F_R9sofstreamb__1), ((const char *(*)(void *__anonymous_object2040))__sepGetCur__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object2041, const char *__anonymous_object2042))__sepSetCur__F_R9sofstreamPCc__1), ((_Bool (*)(void *__anonymous_object2043))__getNL__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object2044, _Bool __anonymous_object2045))__setNL__F_R9sofstreamb__1), ((void (*)(void *__anonymous_object2046))__sepOn__F_R9sofstream__1), ((void (*)(void *__anonymous_object2047))__sepOff__F_R9sofstream__1), ((_Bool (*)(void *__anonymous_object2048))__sepDisable__Fb_R9sofstream__1), ((_Bool (*)(void *__anonymous_object2049))__sepEnable__Fb_R9sofstream__1), ((const char *(*)(void *__anonymous_object2050))__sepGet__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object2051, const char *__anonymous_object2052))__sepSet__F_R9sofstreamPCc__1), ((const char *(*)(void *__anonymous_object2053))__sepGetTuple__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object2054, const char *__anonymous_object2055))__sepSetTuple__F_R9sofstreamPCc__1), ((signed int (*)(void *__anonymous_object2056))__fail__Fi_R9sofstream__1), ((signed int (*)(void *__anonymous_object2057))__flush__Fi_R9sofstream__1), ((void (*)(void *__os__R7tostype_1, const char *__name__PCc_1, const char *__mode__PCc_1))__open__F_R9sofstreamPCcPCc__1), ((void (*)(void *__os__R7tostype_1))__close__F_R9sofstream__1), ((void *(*)(void *__anonymous_object2058, const char *__anonymous_object2059, unsigned long int __anonymous_object2060))__write__FR9sofstream_R9sofstreamPCcUl__1), ((signed int (*)(void *__anonymous_object2061, const char *__fmt__PCc_1, ...))__fmt__Fi_R9sofstreamPCc__1), ((void *)__sout__R9sofstream_1), "size_t")))) , _tmp_cp_ret17)), __v__Ul_1)))) , _tmp_cp_ret18)), ((void *(*)(void *__anonymous_object2062))(&_thunk5)))))) , _tmp_cp_ret19));
    521591}
    522592signed int __main__Fi___1(){
  • src/tests/.expect/literals.x86.txt

    rb2fe1c9 r32cab5b  
    122122struct _Istream_cstrC __cstr__F15s_Istream_cstrC_Pci__1(char *__anonymous_object1340, signed int __size__i_1);
    123123void *___operator_bitor__A0_1_0_0___fail__PFi_Rd0___eof__PFi_Rd0___open__PF_Rd0PCc___close__PF_Rd0___read__PFRd0_Rd0PcUl___ungetc__PFRd0_Rd0c___fmt__PFi_Rd0PCc__FRd0_Rd015s_Istream_cstrC__1(__attribute__ ((unused)) signed int (*__fail__PFi_R7tistype__1)(void *__anonymous_object1341), __attribute__ ((unused)) signed int (*__eof__PFi_R7tistype__1)(void *__anonymous_object1342), __attribute__ ((unused)) void (*__open__PF_R7tistypePCc__1)(void *__is__R7tistype_1, const char *__name__PCc_1), __attribute__ ((unused)) void (*__close__PF_R7tistype__1)(void *__is__R7tistype_1), __attribute__ ((unused)) void *(*__read__PFR7tistype_R7tistypePcUl__1)(void *__anonymous_object1343, char *__anonymous_object1344, unsigned long int __anonymous_object1345), __attribute__ ((unused)) void *(*__ungetc__PFR7tistype_R7tistypec__1)(void *__anonymous_object1346, char __anonymous_object1347), __attribute__ ((unused)) signed int (*__fmt__PFi_R7tistypePCc__1)(void *__anonymous_object1348, const char *__fmt__PCc_1, ...), void *__anonymous_object1349, struct _Istream_cstrC __anonymous_object1350);
     124struct Duration {
     125    signed long long int __tv__q_1;
     126};
     127static inline void ___constructor__F_R9sDuration_autogen___1(struct Duration *___dst__R9sDuration_1);
     128static inline void ___constructor__F_R9sDuration9sDuration_autogen___1(struct Duration *___dst__R9sDuration_1, struct Duration ___src__9sDuration_1);
     129static inline void ___destructor__F_R9sDuration_autogen___1(struct Duration *___dst__R9sDuration_1);
     130static inline struct Duration ___operator_assign__F9sDuration_R9sDuration9sDuration_autogen___1(struct Duration *___dst__R9sDuration_1, struct Duration ___src__9sDuration_1);
     131static inline void ___constructor__F_R9sDurationq_autogen___1(struct Duration *___dst__R9sDuration_1, signed long long int __tv__q_1);
     132static inline void ___constructor__F_R9sDuration_autogen___1(struct Duration *___dst__R9sDuration_1){
     133    ((void)((*___dst__R9sDuration_1).__tv__q_1) /* ?{} */);
     134}
     135static inline void ___constructor__F_R9sDuration9sDuration_autogen___1(struct Duration *___dst__R9sDuration_1, struct Duration ___src__9sDuration_1){
     136    ((void)((*___dst__R9sDuration_1).__tv__q_1=___src__9sDuration_1.__tv__q_1) /* ?{} */);
     137}
     138static inline void ___destructor__F_R9sDuration_autogen___1(struct Duration *___dst__R9sDuration_1){
     139    ((void)((*___dst__R9sDuration_1).__tv__q_1) /* ^?{} */);
     140}
     141static inline struct Duration ___operator_assign__F9sDuration_R9sDuration9sDuration_autogen___1(struct Duration *___dst__R9sDuration_1, struct Duration ___src__9sDuration_1){
     142    struct Duration ___ret__9sDuration_1;
     143    ((void)((*___dst__R9sDuration_1).__tv__q_1=___src__9sDuration_1.__tv__q_1));
     144    ((void)___constructor__F_R9sDuration9sDuration_autogen___1((&___ret__9sDuration_1), (*___dst__R9sDuration_1)));
     145    return ___ret__9sDuration_1;
     146}
     147static inline void ___constructor__F_R9sDurationq_autogen___1(struct Duration *___dst__R9sDuration_1, signed long long int __tv__q_1){
     148    ((void)((*___dst__R9sDuration_1).__tv__q_1=__tv__q_1) /* ?{} */);
     149}
     150static inline void ___constructor__F_R9sDuration__1(struct Duration *__dur__R9sDuration_1){
     151    ((void)((*__dur__R9sDuration_1).__tv__q_1) /* ?{} */);
     152    ((void)((*__dur__R9sDuration_1).__tv__q_1=((signed long long int )0)));
     153}
     154static inline void ___constructor__F_R9sDurationZ__1(struct Duration *__dur__R9sDuration_1, long int __anonymous_object1351){
     155    ((void)((*__dur__R9sDuration_1).__tv__q_1) /* ?{} */);
     156    ((void)((*__dur__R9sDuration_1).__tv__q_1=((signed long long int )0)));
     157}
     158struct Time {
     159    unsigned long long int __tv__Uq_1;
     160};
     161static inline void ___constructor__F_R5sTime_autogen___1(struct Time *___dst__R5sTime_1);
     162static inline void ___constructor__F_R5sTime5sTime_autogen___1(struct Time *___dst__R5sTime_1, struct Time ___src__5sTime_1);
     163static inline void ___destructor__F_R5sTime_autogen___1(struct Time *___dst__R5sTime_1);
     164static inline struct Time ___operator_assign__F5sTime_R5sTime5sTime_autogen___1(struct Time *___dst__R5sTime_1, struct Time ___src__5sTime_1);
     165static inline void ___constructor__F_R5sTimeUq_autogen___1(struct Time *___dst__R5sTime_1, unsigned long long int __tv__Uq_1);
     166static inline void ___constructor__F_R5sTime_autogen___1(struct Time *___dst__R5sTime_1){
     167    ((void)((*___dst__R5sTime_1).__tv__Uq_1) /* ?{} */);
     168}
     169static inline void ___constructor__F_R5sTime5sTime_autogen___1(struct Time *___dst__R5sTime_1, struct Time ___src__5sTime_1){
     170    ((void)((*___dst__R5sTime_1).__tv__Uq_1=___src__5sTime_1.__tv__Uq_1) /* ?{} */);
     171}
     172static inline void ___destructor__F_R5sTime_autogen___1(struct Time *___dst__R5sTime_1){
     173    ((void)((*___dst__R5sTime_1).__tv__Uq_1) /* ^?{} */);
     174}
     175static inline struct Time ___operator_assign__F5sTime_R5sTime5sTime_autogen___1(struct Time *___dst__R5sTime_1, struct Time ___src__5sTime_1){
     176    struct Time ___ret__5sTime_1;
     177    ((void)((*___dst__R5sTime_1).__tv__Uq_1=___src__5sTime_1.__tv__Uq_1));
     178    ((void)___constructor__F_R5sTime5sTime_autogen___1((&___ret__5sTime_1), (*___dst__R5sTime_1)));
     179    return ___ret__5sTime_1;
     180}
     181static inline void ___constructor__F_R5sTimeUq_autogen___1(struct Time *___dst__R5sTime_1, unsigned long long int __tv__Uq_1){
     182    ((void)((*___dst__R5sTime_1).__tv__Uq_1=__tv__Uq_1) /* ?{} */);
     183}
     184static inline void ___constructor__F_R5sTime__1(struct Time *__time__R5sTime_1){
     185    ((void)((*__time__R5sTime_1).__tv__Uq_1) /* ?{} */);
     186    ((void)((*__time__R5sTime_1).__tv__Uq_1=((unsigned long long int )0)));
     187}
     188static inline void ___constructor__F_R5sTimeZ__1(struct Time *__time__R5sTime_1, long int __anonymous_object1352){
     189    ((void)((*__time__R5sTime_1).__tv__Uq_1) /* ?{} */);
     190    ((void)((*__time__R5sTime_1).__tv__Uq_1=((unsigned long long int )0)));
     191}
     192void *___operator_bitor__A0_1_0_0___sepPrt__PFb_Rd0___sepReset__PF_Rd0___sepReset__PF_Rd0b___sepGetCur__PFPCc_Rd0___sepSetCur__PF_Rd0PCc___getNL__PFb_Rd0___setNL__PF_Rd0b___sepOn__PF_Rd0___sepOff__PF_Rd0___sepDisable__PFb_Rd0___sepEnable__PFb_Rd0___sepGet__PFPCc_Rd0___sepSet__PF_Rd0PCc___sepGetTuple__PFPCc_Rd0___sepSetTuple__PF_Rd0PCc___fail__PFi_Rd0___flush__PFi_Rd0___open__PF_Rd0PCcPCc___close__PF_Rd0___write__PFRd0_Rd0PCcUl___fmt__PFi_Rd0PCc__FRd0_Rd09sDuration__1(__attribute__ ((unused)) _Bool (*__sepPrt__PFb_R7tostype__1)(void *__anonymous_object1353), __attribute__ ((unused)) void (*__sepReset__PF_R7tostype__1)(void *__anonymous_object1354), __attribute__ ((unused)) void (*__sepReset__PF_R7tostypeb__1)(void *__anonymous_object1355, _Bool __anonymous_object1356), __attribute__ ((unused)) const char *(*__sepGetCur__PFPCc_R7tostype__1)(void *__anonymous_object1357), __attribute__ ((unused)) void (*__sepSetCur__PF_R7tostypePCc__1)(void *__anonymous_object1358, const char *__anonymous_object1359), __attribute__ ((unused)) _Bool (*__getNL__PFb_R7tostype__1)(void *__anonymous_object1360), __attribute__ ((unused)) void (*__setNL__PF_R7tostypeb__1)(void *__anonymous_object1361, _Bool __anonymous_object1362), __attribute__ ((unused)) void (*__sepOn__PF_R7tostype__1)(void *__anonymous_object1363), __attribute__ ((unused)) void (*__sepOff__PF_R7tostype__1)(void *__anonymous_object1364), __attribute__ ((unused)) _Bool (*__sepDisable__PFb_R7tostype__1)(void *__anonymous_object1365), __attribute__ ((unused)) _Bool (*__sepEnable__PFb_R7tostype__1)(void *__anonymous_object1366), __attribute__ ((unused)) const char *(*__sepGet__PFPCc_R7tostype__1)(void *__anonymous_object1367), __attribute__ ((unused)) void (*__sepSet__PF_R7tostypePCc__1)(void *__anonymous_object1368, const char *__anonymous_object1369), __attribute__ ((unused)) const char *(*__sepGetTuple__PFPCc_R7tostype__1)(void *__anonymous_object1370), __attribute__ ((unused)) void (*__sepSetTuple__PF_R7tostypePCc__1)(void *__anonymous_object1371, const char *__anonymous_object1372), __attribute__ ((unused)) signed int (*__fail__PFi_R7tostype__1)(void *__anonymous_object1373), __attribute__ ((unused)) signed int (*__flush__PFi_R7tostype__1)(void *__anonymous_object1374), __attribute__ ((unused)) void (*__open__PF_R7tostypePCcPCc__1)(void *__os__R7tostype_1, const char *__name__PCc_1, const char *__mode__PCc_1), __attribute__ ((unused)) void (*__close__PF_R7tostype__1)(void *__os__R7tostype_1), __attribute__ ((unused)) void *(*__write__PFR7tostype_R7tostypePCcUl__1)(void *__anonymous_object1375, const char *__anonymous_object1376, unsigned long int __anonymous_object1377), __attribute__ ((unused)) signed int (*__fmt__PFi_R7tostypePCc__1)(void *__anonymous_object1378, const char *__fmt__PCc_1, ...), void *__os__R7tostype_1, struct Duration __dur__9sDuration_1);
     193void *___operator_bitor__A0_1_0_0___sepPrt__PFb_Rd0___sepReset__PF_Rd0___sepReset__PF_Rd0b___sepGetCur__PFPCc_Rd0___sepSetCur__PF_Rd0PCc___getNL__PFb_Rd0___setNL__PF_Rd0b___sepOn__PF_Rd0___sepOff__PF_Rd0___sepDisable__PFb_Rd0___sepEnable__PFb_Rd0___sepGet__PFPCc_Rd0___sepSet__PF_Rd0PCc___sepGetTuple__PFPCc_Rd0___sepSetTuple__PF_Rd0PCc___fail__PFi_Rd0___flush__PFi_Rd0___open__PF_Rd0PCcPCc___close__PF_Rd0___write__PFRd0_Rd0PCcUl___fmt__PFi_Rd0PCc__FRd0_Rd05sTime__1(__attribute__ ((unused)) _Bool (*__sepPrt__PFb_R7tostype__1)(void *__anonymous_object1379), __attribute__ ((unused)) void (*__sepReset__PF_R7tostype__1)(void *__anonymous_object1380), __attribute__ ((unused)) void (*__sepReset__PF_R7tostypeb__1)(void *__anonymous_object1381, _Bool __anonymous_object1382), __attribute__ ((unused)) const char *(*__sepGetCur__PFPCc_R7tostype__1)(void *__anonymous_object1383), __attribute__ ((unused)) void (*__sepSetCur__PF_R7tostypePCc__1)(void *__anonymous_object1384, const char *__anonymous_object1385), __attribute__ ((unused)) _Bool (*__getNL__PFb_R7tostype__1)(void *__anonymous_object1386), __attribute__ ((unused)) void (*__setNL__PF_R7tostypeb__1)(void *__anonymous_object1387, _Bool __anonymous_object1388), __attribute__ ((unused)) void (*__sepOn__PF_R7tostype__1)(void *__anonymous_object1389), __attribute__ ((unused)) void (*__sepOff__PF_R7tostype__1)(void *__anonymous_object1390), __attribute__ ((unused)) _Bool (*__sepDisable__PFb_R7tostype__1)(void *__anonymous_object1391), __attribute__ ((unused)) _Bool (*__sepEnable__PFb_R7tostype__1)(void *__anonymous_object1392), __attribute__ ((unused)) const char *(*__sepGet__PFPCc_R7tostype__1)(void *__anonymous_object1393), __attribute__ ((unused)) void (*__sepSet__PF_R7tostypePCc__1)(void *__anonymous_object1394, const char *__anonymous_object1395), __attribute__ ((unused)) const char *(*__sepGetTuple__PFPCc_R7tostype__1)(void *__anonymous_object1396), __attribute__ ((unused)) void (*__sepSetTuple__PF_R7tostypePCc__1)(void *__anonymous_object1397, const char *__anonymous_object1398), __attribute__ ((unused)) signed int (*__fail__PFi_R7tostype__1)(void *__anonymous_object1399), __attribute__ ((unused)) signed int (*__flush__PFi_R7tostype__1)(void *__anonymous_object1400), __attribute__ ((unused)) void (*__open__PF_R7tostypePCcPCc__1)(void *__os__R7tostype_1, const char *__name__PCc_1, const char *__mode__PCc_1), __attribute__ ((unused)) void (*__close__PF_R7tostype__1)(void *__os__R7tostype_1), __attribute__ ((unused)) void *(*__write__PFR7tostype_R7tostypePCcUl__1)(void *__anonymous_object1401, const char *__anonymous_object1402, unsigned long int __anonymous_object1403), __attribute__ ((unused)) signed int (*__fmt__PFi_R7tostypePCc__1)(void *__anonymous_object1404, const char *__fmt__PCc_1, ...), void *__os__R7tostype_1, struct Time __time__5sTime_1);
    124194enum __anonymous0 {
    125195    __sepSize__C13e__anonymous0_1 = 16,
     
    401471
    402472}
    403 _Bool __sepPrt__Fb_R9sofstream__1(struct ofstream *__anonymous_object1351);
    404 void __sepReset__F_R9sofstream__1(struct ofstream *__anonymous_object1352);
    405 void __sepReset__F_R9sofstreamb__1(struct ofstream *__anonymous_object1353, _Bool __anonymous_object1354);
    406 const char *__sepGetCur__FPCc_R9sofstream__1(struct ofstream *__anonymous_object1355);
    407 void __sepSetCur__F_R9sofstreamPCc__1(struct ofstream *__anonymous_object1356, const char *__anonymous_object1357);
    408 _Bool __getNL__Fb_R9sofstream__1(struct ofstream *__anonymous_object1358);
    409 void __setNL__F_R9sofstreamb__1(struct ofstream *__anonymous_object1359, _Bool __anonymous_object1360);
    410 void __sepOn__F_R9sofstream__1(struct ofstream *__anonymous_object1361);
    411 void __sepOff__F_R9sofstream__1(struct ofstream *__anonymous_object1362);
    412 _Bool __sepDisable__Fb_R9sofstream__1(struct ofstream *__anonymous_object1363);
    413 _Bool __sepEnable__Fb_R9sofstream__1(struct ofstream *__anonymous_object1364);
    414 const char *__sepGet__FPCc_R9sofstream__1(struct ofstream *__anonymous_object1365);
    415 void __sepSet__F_R9sofstreamPCc__1(struct ofstream *__anonymous_object1366, const char *__anonymous_object1367);
    416 const char *__sepGetTuple__FPCc_R9sofstream__1(struct ofstream *__anonymous_object1368);
    417 void __sepSetTuple__F_R9sofstreamPCc__1(struct ofstream *__anonymous_object1369, const char *__anonymous_object1370);
    418 signed int __fail__Fi_R9sofstream__1(struct ofstream *__anonymous_object1371);
    419 signed int __flush__Fi_R9sofstream__1(struct ofstream *__anonymous_object1372);
    420 void __open__F_R9sofstreamPCcPCc__1(struct ofstream *__anonymous_object1373, const char *__name__PCc_1, const char *__mode__PCc_1);
    421 void __open__F_R9sofstreamPCc__1(struct ofstream *__anonymous_object1374, const char *__name__PCc_1);
    422 void __close__F_R9sofstream__1(struct ofstream *__anonymous_object1375);
    423 struct ofstream *__write__FR9sofstream_R9sofstreamPCcUl__1(struct ofstream *__anonymous_object1376, const char *__data__PCc_1, unsigned long int __size__Ul_1);
    424 signed int __fmt__Fi_R9sofstreamPCc__1(struct ofstream *__anonymous_object1377, const char *__fmt__PCc_1, ...);
     473_Bool __sepPrt__Fb_R9sofstream__1(struct ofstream *__anonymous_object1405);
     474void __sepReset__F_R9sofstream__1(struct ofstream *__anonymous_object1406);
     475void __sepReset__F_R9sofstreamb__1(struct ofstream *__anonymous_object1407, _Bool __anonymous_object1408);
     476const char *__sepGetCur__FPCc_R9sofstream__1(struct ofstream *__anonymous_object1409);
     477void __sepSetCur__F_R9sofstreamPCc__1(struct ofstream *__anonymous_object1410, const char *__anonymous_object1411);
     478_Bool __getNL__Fb_R9sofstream__1(struct ofstream *__anonymous_object1412);
     479void __setNL__F_R9sofstreamb__1(struct ofstream *__anonymous_object1413, _Bool __anonymous_object1414);
     480void __sepOn__F_R9sofstream__1(struct ofstream *__anonymous_object1415);
     481void __sepOff__F_R9sofstream__1(struct ofstream *__anonymous_object1416);
     482_Bool __sepDisable__Fb_R9sofstream__1(struct ofstream *__anonymous_object1417);
     483_Bool __sepEnable__Fb_R9sofstream__1(struct ofstream *__anonymous_object1418);
     484const char *__sepGet__FPCc_R9sofstream__1(struct ofstream *__anonymous_object1419);
     485void __sepSet__F_R9sofstreamPCc__1(struct ofstream *__anonymous_object1420, const char *__anonymous_object1421);
     486const char *__sepGetTuple__FPCc_R9sofstream__1(struct ofstream *__anonymous_object1422);
     487void __sepSetTuple__F_R9sofstreamPCc__1(struct ofstream *__anonymous_object1423, const char *__anonymous_object1424);
     488signed int __fail__Fi_R9sofstream__1(struct ofstream *__anonymous_object1425);
     489signed int __flush__Fi_R9sofstream__1(struct ofstream *__anonymous_object1426);
     490void __open__F_R9sofstreamPCcPCc__1(struct ofstream *__anonymous_object1427, const char *__name__PCc_1, const char *__mode__PCc_1);
     491void __open__F_R9sofstreamPCc__1(struct ofstream *__anonymous_object1428, const char *__name__PCc_1);
     492void __close__F_R9sofstream__1(struct ofstream *__anonymous_object1429);
     493struct ofstream *__write__FR9sofstream_R9sofstreamPCcUl__1(struct ofstream *__anonymous_object1430, const char *__data__PCc_1, unsigned long int __size__Ul_1);
     494signed int __fmt__Fi_R9sofstreamPCc__1(struct ofstream *__anonymous_object1431, const char *__fmt__PCc_1, ...);
    425495void ___constructor__F_R9sofstream__1(struct ofstream *__os__R9sofstream_1);
    426496void ___constructor__F_R9sofstreamPCcPCc__1(struct ofstream *__os__R9sofstream_1, const char *__name__PCc_1, const char *__mode__PCc_1);
     
    461531struct ifstream *__read__FR9sifstream_R9sifstreamPcUl__1(struct ifstream *__is__R9sifstream_1, char *__data__Pc_1, unsigned long int __size__Ul_1);
    462532struct ifstream *__ungetc__FR9sifstream_R9sifstreamc__1(struct ifstream *__is__R9sifstream_1, char __c__c_1);
    463 signed int __fmt__Fi_R9sifstreamPCc__1(struct ifstream *__anonymous_object1378, const char *__fmt__PCc_1, ...);
     533signed int __fmt__Fi_R9sifstreamPCc__1(struct ifstream *__anonymous_object1432, const char *__fmt__PCc_1, ...);
    464534void ___constructor__F_R9sifstream__1(struct ifstream *__is__R9sifstream_1);
    465535void ___constructor__F_R9sifstreamPCcPCc__1(struct ifstream *__is__R9sifstream_1, const char *__name__PCc_1, const char *__mode__PCc_1);
     
    471541    struct ofstream *_tmp_cp_ret4;
    472542    __attribute__ ((unused)) struct ofstream *_thunk0(struct ofstream *_p0){
    473         return __endl__A0_1_0_0___sepPrt__PFb_Rd0___sepReset__PF_Rd0___sepReset__PF_Rd0b___sepGetCur__PFPCc_Rd0___sepSetCur__PF_Rd0PCc___getNL__PFb_Rd0___setNL__PF_Rd0b___sepOn__PF_Rd0___sepOff__PF_Rd0___sepDisable__PFb_Rd0___sepEnable__PFb_Rd0___sepGet__PFPCc_Rd0___sepSet__PF_Rd0PCc___sepGetTuple__PFPCc_Rd0___sepSetTuple__PF_Rd0PCc___fail__PFi_Rd0___flush__PFi_Rd0___open__PF_Rd0PCcPCc___close__PF_Rd0___write__PFRd0_Rd0PCcUl___fmt__PFi_Rd0PCc__FRd0_Rd0__1(((_Bool (*)(void *__anonymous_object1379))__sepPrt__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1380))__sepReset__F_R9sofstream__1), ((void (*)(void *__anonymous_object1381, _Bool __anonymous_object1382))__sepReset__F_R9sofstreamb__1), ((const char *(*)(void *__anonymous_object1383))__sepGetCur__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1384, const char *__anonymous_object1385))__sepSetCur__F_R9sofstreamPCc__1), ((_Bool (*)(void *__anonymous_object1386))__getNL__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1387, _Bool __anonymous_object1388))__setNL__F_R9sofstreamb__1), ((void (*)(void *__anonymous_object1389))__sepOn__F_R9sofstream__1), ((void (*)(void *__anonymous_object1390))__sepOff__F_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1391))__sepDisable__Fb_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1392))__sepEnable__Fb_R9sofstream__1), ((const char *(*)(void *__anonymous_object1393))__sepGet__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1394, const char *__anonymous_object1395))__sepSet__F_R9sofstreamPCc__1), ((const char *(*)(void *__anonymous_object1396))__sepGetTuple__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1397, const char *__anonymous_object1398))__sepSetTuple__F_R9sofstreamPCc__1), ((signed int (*)(void *__anonymous_object1399))__fail__Fi_R9sofstream__1), ((signed int (*)(void *__anonymous_object1400))__flush__Fi_R9sofstream__1), ((void (*)(void *__os__R7tostype_1, const char *__name__PCc_1, const char *__mode__PCc_1))__open__F_R9sofstreamPCcPCc__1), ((void (*)(void *__os__R7tostype_1))__close__F_R9sofstream__1), ((void *(*)(void *__anonymous_object1401, const char *__anonymous_object1402, unsigned long int __anonymous_object1403))__write__FR9sofstream_R9sofstreamPCcUl__1), ((signed int (*)(void *__anonymous_object1404, const char *__fmt__PCc_1, ...))__fmt__Fi_R9sofstreamPCc__1), ((void *)_p0));
    474     }
    475     ((void)(((void)(_tmp_cp_ret4=((struct ofstream *)___operator_bitor__A0_1_0_0___sepPrt__PFb_Rd0___sepReset__PF_Rd0___sepReset__PF_Rd0b___sepGetCur__PFPCc_Rd0___sepSetCur__PF_Rd0PCc___getNL__PFb_Rd0___setNL__PF_Rd0b___sepOn__PF_Rd0___sepOff__PF_Rd0___sepDisable__PFb_Rd0___sepEnable__PFb_Rd0___sepGet__PFPCc_Rd0___sepSet__PF_Rd0PCc___sepGetTuple__PFPCc_Rd0___sepSetTuple__PF_Rd0PCc___fail__PFi_Rd0___flush__PFi_Rd0___open__PF_Rd0PCcPCc___close__PF_Rd0___write__PFRd0_Rd0PCcUl___fmt__PFi_Rd0PCc__FRd0_Rd0PFRd0_Rd0___1(((_Bool (*)(void *__anonymous_object1405))__sepPrt__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1406))__sepReset__F_R9sofstream__1), ((void (*)(void *__anonymous_object1407, _Bool __anonymous_object1408))__sepReset__F_R9sofstreamb__1), ((const char *(*)(void *__anonymous_object1409))__sepGetCur__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1410, const char *__anonymous_object1411))__sepSetCur__F_R9sofstreamPCc__1), ((_Bool (*)(void *__anonymous_object1412))__getNL__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1413, _Bool __anonymous_object1414))__setNL__F_R9sofstreamb__1), ((void (*)(void *__anonymous_object1415))__sepOn__F_R9sofstream__1), ((void (*)(void *__anonymous_object1416))__sepOff__F_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1417))__sepDisable__Fb_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1418))__sepEnable__Fb_R9sofstream__1), ((const char *(*)(void *__anonymous_object1419))__sepGet__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1420, const char *__anonymous_object1421))__sepSet__F_R9sofstreamPCc__1), ((const char *(*)(void *__anonymous_object1422))__sepGetTuple__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1423, const char *__anonymous_object1424))__sepSetTuple__F_R9sofstreamPCc__1), ((signed int (*)(void *__anonymous_object1425))__fail__Fi_R9sofstream__1), ((signed int (*)(void *__anonymous_object1426))__flush__Fi_R9sofstream__1), ((void (*)(void *__os__R7tostype_1, const char *__name__PCc_1, const char *__mode__PCc_1))__open__F_R9sofstreamPCcPCc__1), ((void (*)(void *__os__R7tostype_1))__close__F_R9sofstream__1), ((void *(*)(void *__anonymous_object1427, const char *__anonymous_object1428, unsigned long int __anonymous_object1429))__write__FR9sofstream_R9sofstreamPCcUl__1), ((signed int (*)(void *__anonymous_object1430, const char *__fmt__PCc_1, ...))__fmt__Fi_R9sofstreamPCc__1), ((void *)(((void)(_tmp_cp_ret3=((struct ofstream *)___operator_bitor__A0_1_0_0___sepPrt__PFb_Rd0___sepReset__PF_Rd0___sepReset__PF_Rd0b___sepGetCur__PFPCc_Rd0___sepSetCur__PF_Rd0PCc___getNL__PFb_Rd0___setNL__PF_Rd0b___sepOn__PF_Rd0___sepOff__PF_Rd0___sepDisable__PFb_Rd0___sepEnable__PFb_Rd0___sepGet__PFPCc_Rd0___sepSet__PF_Rd0PCc___sepGetTuple__PFPCc_Rd0___sepSetTuple__PF_Rd0PCc___fail__PFi_Rd0___flush__PFi_Rd0___open__PF_Rd0PCcPCc___close__PF_Rd0___write__PFRd0_Rd0PCcUl___fmt__PFi_Rd0PCc__FRd0_Rd0c__1(((_Bool (*)(void *__anonymous_object1431))__sepPrt__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1432))__sepReset__F_R9sofstream__1), ((void (*)(void *__anonymous_object1433, _Bool __anonymous_object1434))__sepReset__F_R9sofstreamb__1), ((const char *(*)(void *__anonymous_object1435))__sepGetCur__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1436, const char *__anonymous_object1437))__sepSetCur__F_R9sofstreamPCc__1), ((_Bool (*)(void *__anonymous_object1438))__getNL__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1439, _Bool __anonymous_object1440))__setNL__F_R9sofstreamb__1), ((void (*)(void *__anonymous_object1441))__sepOn__F_R9sofstream__1), ((void (*)(void *__anonymous_object1442))__sepOff__F_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1443))__sepDisable__Fb_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1444))__sepEnable__Fb_R9sofstream__1), ((const char *(*)(void *__anonymous_object1445))__sepGet__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1446, const char *__anonymous_object1447))__sepSet__F_R9sofstreamPCc__1), ((const char *(*)(void *__anonymous_object1448))__sepGetTuple__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1449, const char *__anonymous_object1450))__sepSetTuple__F_R9sofstreamPCc__1), ((signed int (*)(void *__anonymous_object1451))__fail__Fi_R9sofstream__1), ((signed int (*)(void *__anonymous_object1452))__flush__Fi_R9sofstream__1), ((void (*)(void *__os__R7tostype_1, const char *__name__PCc_1, const char *__mode__PCc_1))__open__F_R9sofstreamPCcPCc__1), ((void (*)(void *__os__R7tostype_1))__close__F_R9sofstream__1), ((void *(*)(void *__anonymous_object1453, const char *__anonymous_object1454, unsigned long int __anonymous_object1455))__write__FR9sofstream_R9sofstreamPCcUl__1), ((signed int (*)(void *__anonymous_object1456, const char *__fmt__PCc_1, ...))__fmt__Fi_R9sofstreamPCc__1), ((void *)(((void)(_tmp_cp_ret2=((struct ofstream *)___operator_bitor__A0_1_0_0___sepPrt__PFb_Rd0___sepReset__PF_Rd0___sepReset__PF_Rd0b___sepGetCur__PFPCc_Rd0___sepSetCur__PF_Rd0PCc___getNL__PFb_Rd0___setNL__PF_Rd0b___sepOn__PF_Rd0___sepOff__PF_Rd0___sepDisable__PFb_Rd0___sepEnable__PFb_Rd0___sepGet__PFPCc_Rd0___sepSet__PF_Rd0PCc___sepGetTuple__PFPCc_Rd0___sepSetTuple__PF_Rd0PCc___fail__PFi_Rd0___flush__PFi_Rd0___open__PF_Rd0PCcPCc___close__PF_Rd0___write__PFRd0_Rd0PCcUl___fmt__PFi_Rd0PCc__FRd0_Rd0PCc__1(((_Bool (*)(void *__anonymous_object1457))__sepPrt__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1458))__sepReset__F_R9sofstream__1), ((void (*)(void *__anonymous_object1459, _Bool __anonymous_object1460))__sepReset__F_R9sofstreamb__1), ((const char *(*)(void *__anonymous_object1461))__sepGetCur__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1462, const char *__anonymous_object1463))__sepSetCur__F_R9sofstreamPCc__1), ((_Bool (*)(void *__anonymous_object1464))__getNL__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1465, _Bool __anonymous_object1466))__setNL__F_R9sofstreamb__1), ((void (*)(void *__anonymous_object1467))__sepOn__F_R9sofstream__1), ((void (*)(void *__anonymous_object1468))__sepOff__F_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1469))__sepDisable__Fb_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1470))__sepEnable__Fb_R9sofstream__1), ((const char *(*)(void *__anonymous_object1471))__sepGet__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1472, const char *__anonymous_object1473))__sepSet__F_R9sofstreamPCc__1), ((const char *(*)(void *__anonymous_object1474))__sepGetTuple__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1475, const char *__anonymous_object1476))__sepSetTuple__F_R9sofstreamPCc__1), ((signed int (*)(void *__anonymous_object1477))__fail__Fi_R9sofstream__1), ((signed int (*)(void *__anonymous_object1478))__flush__Fi_R9sofstream__1), ((void (*)(void *__os__R7tostype_1, const char *__name__PCc_1, const char *__mode__PCc_1))__open__F_R9sofstreamPCcPCc__1), ((void (*)(void *__os__R7tostype_1))__close__F_R9sofstream__1), ((void *(*)(void *__anonymous_object1479, const char *__anonymous_object1480, unsigned long int __anonymous_object1481))__write__FR9sofstream_R9sofstreamPCcUl__1), ((signed int (*)(void *__anonymous_object1482, const char *__fmt__PCc_1, ...))__fmt__Fi_R9sofstreamPCc__1), ((void *)__sout__R9sofstream_1), "char ")))) , _tmp_cp_ret2)), __v__c_1)))) , _tmp_cp_ret3)), ((void *(*)(void *__anonymous_object1483))(&_thunk0)))))) , _tmp_cp_ret4));
     543        return __endl__A0_1_0_0___sepPrt__PFb_Rd0___sepReset__PF_Rd0___sepReset__PF_Rd0b___sepGetCur__PFPCc_Rd0___sepSetCur__PF_Rd0PCc___getNL__PFb_Rd0___setNL__PF_Rd0b___sepOn__PF_Rd0___sepOff__PF_Rd0___sepDisable__PFb_Rd0___sepEnable__PFb_Rd0___sepGet__PFPCc_Rd0___sepSet__PF_Rd0PCc___sepGetTuple__PFPCc_Rd0___sepSetTuple__PF_Rd0PCc___fail__PFi_Rd0___flush__PFi_Rd0___open__PF_Rd0PCcPCc___close__PF_Rd0___write__PFRd0_Rd0PCcUl___fmt__PFi_Rd0PCc__FRd0_Rd0__1(((_Bool (*)(void *__anonymous_object1433))__sepPrt__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1434))__sepReset__F_R9sofstream__1), ((void (*)(void *__anonymous_object1435, _Bool __anonymous_object1436))__sepReset__F_R9sofstreamb__1), ((const char *(*)(void *__anonymous_object1437))__sepGetCur__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1438, const char *__anonymous_object1439))__sepSetCur__F_R9sofstreamPCc__1), ((_Bool (*)(void *__anonymous_object1440))__getNL__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1441, _Bool __anonymous_object1442))__setNL__F_R9sofstreamb__1), ((void (*)(void *__anonymous_object1443))__sepOn__F_R9sofstream__1), ((void (*)(void *__anonymous_object1444))__sepOff__F_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1445))__sepDisable__Fb_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1446))__sepEnable__Fb_R9sofstream__1), ((const char *(*)(void *__anonymous_object1447))__sepGet__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1448, const char *__anonymous_object1449))__sepSet__F_R9sofstreamPCc__1), ((const char *(*)(void *__anonymous_object1450))__sepGetTuple__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1451, const char *__anonymous_object1452))__sepSetTuple__F_R9sofstreamPCc__1), ((signed int (*)(void *__anonymous_object1453))__fail__Fi_R9sofstream__1), ((signed int (*)(void *__anonymous_object1454))__flush__Fi_R9sofstream__1), ((void (*)(void *__os__R7tostype_1, const char *__name__PCc_1, const char *__mode__PCc_1))__open__F_R9sofstreamPCcPCc__1), ((void (*)(void *__os__R7tostype_1))__close__F_R9sofstream__1), ((void *(*)(void *__anonymous_object1455, const char *__anonymous_object1456, unsigned long int __anonymous_object1457))__write__FR9sofstream_R9sofstreamPCcUl__1), ((signed int (*)(void *__anonymous_object1458, const char *__fmt__PCc_1, ...))__fmt__Fi_R9sofstreamPCc__1), ((void *)_p0));
     544    }
     545    ((void)(((void)(_tmp_cp_ret4=((struct ofstream *)___operator_bitor__A0_1_0_0___sepPrt__PFb_Rd0___sepReset__PF_Rd0___sepReset__PF_Rd0b___sepGetCur__PFPCc_Rd0___sepSetCur__PF_Rd0PCc___getNL__PFb_Rd0___setNL__PF_Rd0b___sepOn__PF_Rd0___sepOff__PF_Rd0___sepDisable__PFb_Rd0___sepEnable__PFb_Rd0___sepGet__PFPCc_Rd0___sepSet__PF_Rd0PCc___sepGetTuple__PFPCc_Rd0___sepSetTuple__PF_Rd0PCc___fail__PFi_Rd0___flush__PFi_Rd0___open__PF_Rd0PCcPCc___close__PF_Rd0___write__PFRd0_Rd0PCcUl___fmt__PFi_Rd0PCc__FRd0_Rd0PFRd0_Rd0___1(((_Bool (*)(void *__anonymous_object1459))__sepPrt__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1460))__sepReset__F_R9sofstream__1), ((void (*)(void *__anonymous_object1461, _Bool __anonymous_object1462))__sepReset__F_R9sofstreamb__1), ((const char *(*)(void *__anonymous_object1463))__sepGetCur__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1464, const char *__anonymous_object1465))__sepSetCur__F_R9sofstreamPCc__1), ((_Bool (*)(void 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*__mode__PCc_1))__open__F_R9sofstreamPCcPCc__1), ((void (*)(void *__os__R7tostype_1))__close__F_R9sofstream__1), ((void *(*)(void *__anonymous_object1533, const char *__anonymous_object1534, unsigned long int __anonymous_object1535))__write__FR9sofstream_R9sofstreamPCcUl__1), ((signed int (*)(void *__anonymous_object1536, const char *__fmt__PCc_1, ...))__fmt__Fi_R9sofstreamPCc__1), ((void *)__sout__R9sofstream_1), "char ")))) , _tmp_cp_ret2)), __v__c_1)))) , _tmp_cp_ret3)), ((void *(*)(void *__anonymous_object1537))(&_thunk0)))))) , _tmp_cp_ret4));
    476546}
    477547void __f__F_Sc__1(signed char __v__Sc_1){
     
    480550    struct ofstream *_tmp_cp_ret7;
    481551    __attribute__ ((unused)) struct ofstream *_thunk1(struct ofstream *_p0){
    482         return __endl__A0_1_0_0___sepPrt__PFb_Rd0___sepReset__PF_Rd0___sepReset__PF_Rd0b___sepGetCur__PFPCc_Rd0___sepSetCur__PF_Rd0PCc___getNL__PFb_Rd0___setNL__PF_Rd0b___sepOn__PF_Rd0___sepOff__PF_Rd0___sepDisable__PFb_Rd0___sepEnable__PFb_Rd0___sepGet__PFPCc_Rd0___sepSet__PF_Rd0PCc___sepGetTuple__PFPCc_Rd0___sepSetTuple__PF_Rd0PCc___fail__PFi_Rd0___flush__PFi_Rd0___open__PF_Rd0PCcPCc___close__PF_Rd0___write__PFRd0_Rd0PCcUl___fmt__PFi_Rd0PCc__FRd0_Rd0__1(((_Bool (*)(void *__anonymous_object1484))__sepPrt__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1485))__sepReset__F_R9sofstream__1), ((void (*)(void *__anonymous_object1486, _Bool __anonymous_object1487))__sepReset__F_R9sofstreamb__1), ((const char *(*)(void *__anonymous_object1488))__sepGetCur__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1489, const char *__anonymous_object1490))__sepSetCur__F_R9sofstreamPCc__1), ((_Bool (*)(void *__anonymous_object1491))__getNL__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1492, _Bool __anonymous_object1493))__setNL__F_R9sofstreamb__1), ((void (*)(void *__anonymous_object1494))__sepOn__F_R9sofstream__1), ((void (*)(void *__anonymous_object1495))__sepOff__F_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1496))__sepDisable__Fb_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1497))__sepEnable__Fb_R9sofstream__1), ((const char *(*)(void *__anonymous_object1498))__sepGet__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1499, const char *__anonymous_object1500))__sepSet__F_R9sofstreamPCc__1), ((const char *(*)(void *__anonymous_object1501))__sepGetTuple__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1502, const char *__anonymous_object1503))__sepSetTuple__F_R9sofstreamPCc__1), ((signed int (*)(void *__anonymous_object1504))__fail__Fi_R9sofstream__1), ((signed int (*)(void *__anonymous_object1505))__flush__Fi_R9sofstream__1), ((void (*)(void *__os__R7tostype_1, const char *__name__PCc_1, const char *__mode__PCc_1))__open__F_R9sofstreamPCcPCc__1), ((void (*)(void *__os__R7tostype_1))__close__F_R9sofstream__1), ((void *(*)(void *__anonymous_object1506, const char *__anonymous_object1507, unsigned long int __anonymous_object1508))__write__FR9sofstream_R9sofstreamPCcUl__1), ((signed int (*)(void *__anonymous_object1509, const char *__fmt__PCc_1, ...))__fmt__Fi_R9sofstreamPCc__1), ((void *)_p0));
    483     }
    484     ((void)(((void)(_tmp_cp_ret7=((struct ofstream *)___operator_bitor__A0_1_0_0___sepPrt__PFb_Rd0___sepReset__PF_Rd0___sepReset__PF_Rd0b___sepGetCur__PFPCc_Rd0___sepSetCur__PF_Rd0PCc___getNL__PFb_Rd0___setNL__PF_Rd0b___sepOn__PF_Rd0___sepOff__PF_Rd0___sepDisable__PFb_Rd0___sepEnable__PFb_Rd0___sepGet__PFPCc_Rd0___sepSet__PF_Rd0PCc___sepGetTuple__PFPCc_Rd0___sepSetTuple__PF_Rd0PCc___fail__PFi_Rd0___flush__PFi_Rd0___open__PF_Rd0PCcPCc___close__PF_Rd0___write__PFRd0_Rd0PCcUl___fmt__PFi_Rd0PCc__FRd0_Rd0PFRd0_Rd0___1(((_Bool (*)(void *__anonymous_object1510))__sepPrt__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1511))__sepReset__F_R9sofstream__1), ((void (*)(void *__anonymous_object1512, _Bool __anonymous_object1513))__sepReset__F_R9sofstreamb__1), ((const char *(*)(void *__anonymous_object1514))__sepGetCur__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1515, const char *__anonymous_object1516))__sepSetCur__F_R9sofstreamPCc__1), ((_Bool (*)(void 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*)___operator_bitor__A0_1_0_0___sepPrt__PFb_Rd0___sepReset__PF_Rd0___sepReset__PF_Rd0b___sepGetCur__PFPCc_Rd0___sepSetCur__PF_Rd0PCc___getNL__PFb_Rd0___setNL__PF_Rd0b___sepOn__PF_Rd0___sepOff__PF_Rd0___sepDisable__PFb_Rd0___sepEnable__PFb_Rd0___sepGet__PFPCc_Rd0___sepSet__PF_Rd0PCc___sepGetTuple__PFPCc_Rd0___sepSetTuple__PF_Rd0PCc___fail__PFi_Rd0___flush__PFi_Rd0___open__PF_Rd0PCcPCc___close__PF_Rd0___write__PFRd0_Rd0PCcUl___fmt__PFi_Rd0PCc__FRd0_Rd0PCc__1(((_Bool (*)(void *__anonymous_object1562))__sepPrt__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1563))__sepReset__F_R9sofstream__1), ((void (*)(void *__anonymous_object1564, _Bool __anonymous_object1565))__sepReset__F_R9sofstreamb__1), ((const char *(*)(void *__anonymous_object1566))__sepGetCur__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1567, const char *__anonymous_object1568))__sepSetCur__F_R9sofstreamPCc__1), ((_Bool (*)(void *__anonymous_object1569))__getNL__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1570, _Bool __anonymous_object1571))__setNL__F_R9sofstreamb__1), ((void (*)(void *__anonymous_object1572))__sepOn__F_R9sofstream__1), ((void (*)(void *__anonymous_object1573))__sepOff__F_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1574))__sepDisable__Fb_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1575))__sepEnable__Fb_R9sofstream__1), ((const char *(*)(void *__anonymous_object1576))__sepGet__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1577, const char *__anonymous_object1578))__sepSet__F_R9sofstreamPCc__1), ((const char *(*)(void *__anonymous_object1579))__sepGetTuple__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1580, const char *__anonymous_object1581))__sepSetTuple__F_R9sofstreamPCc__1), ((signed int (*)(void *__anonymous_object1582))__fail__Fi_R9sofstream__1), ((signed int (*)(void *__anonymous_object1583))__flush__Fi_R9sofstream__1), ((void (*)(void *__os__R7tostype_1, const char *__name__PCc_1, const char *__mode__PCc_1))__open__F_R9sofstreamPCcPCc__1), ((void (*)(void *__os__R7tostype_1))__close__F_R9sofstream__1), ((void *(*)(void *__anonymous_object1584, const char *__anonymous_object1585, unsigned long int __anonymous_object1586))__write__FR9sofstream_R9sofstreamPCcUl__1), ((signed int (*)(void *__anonymous_object1587, const char *__fmt__PCc_1, ...))__fmt__Fi_R9sofstreamPCc__1), ((void *)__sout__R9sofstream_1), "signed char ")))) , _tmp_cp_ret5)), __v__Sc_1)))) , _tmp_cp_ret6)), ((void *(*)(void *__anonymous_object1588))(&_thunk1)))))) , _tmp_cp_ret7));
     552        return __endl__A0_1_0_0___sepPrt__PFb_Rd0___sepReset__PF_Rd0___sepReset__PF_Rd0b___sepGetCur__PFPCc_Rd0___sepSetCur__PF_Rd0PCc___getNL__PFb_Rd0___setNL__PF_Rd0b___sepOn__PF_Rd0___sepOff__PF_Rd0___sepDisable__PFb_Rd0___sepEnable__PFb_Rd0___sepGet__PFPCc_Rd0___sepSet__PF_Rd0PCc___sepGetTuple__PFPCc_Rd0___sepSetTuple__PF_Rd0PCc___fail__PFi_Rd0___flush__PFi_Rd0___open__PF_Rd0PCcPCc___close__PF_Rd0___write__PFRd0_Rd0PCcUl___fmt__PFi_Rd0PCc__FRd0_Rd0__1(((_Bool (*)(void *__anonymous_object1538))__sepPrt__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1539))__sepReset__F_R9sofstream__1), ((void (*)(void *__anonymous_object1540, _Bool __anonymous_object1541))__sepReset__F_R9sofstreamb__1), ((const char *(*)(void *__anonymous_object1542))__sepGetCur__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1543, const char *__anonymous_object1544))__sepSetCur__F_R9sofstreamPCc__1), ((_Bool (*)(void *__anonymous_object1545))__getNL__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1546, _Bool __anonymous_object1547))__setNL__F_R9sofstreamb__1), ((void (*)(void *__anonymous_object1548))__sepOn__F_R9sofstream__1), ((void (*)(void *__anonymous_object1549))__sepOff__F_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1550))__sepDisable__Fb_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1551))__sepEnable__Fb_R9sofstream__1), ((const char *(*)(void *__anonymous_object1552))__sepGet__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1553, const char *__anonymous_object1554))__sepSet__F_R9sofstreamPCc__1), ((const char *(*)(void *__anonymous_object1555))__sepGetTuple__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1556, const char *__anonymous_object1557))__sepSetTuple__F_R9sofstreamPCc__1), ((signed int (*)(void *__anonymous_object1558))__fail__Fi_R9sofstream__1), ((signed int (*)(void *__anonymous_object1559))__flush__Fi_R9sofstream__1), ((void (*)(void *__os__R7tostype_1, const char *__name__PCc_1, const char *__mode__PCc_1))__open__F_R9sofstreamPCcPCc__1), ((void (*)(void *__os__R7tostype_1))__close__F_R9sofstream__1), ((void *(*)(void *__anonymous_object1560, const char *__anonymous_object1561, unsigned long int __anonymous_object1562))__write__FR9sofstream_R9sofstreamPCcUl__1), ((signed int (*)(void *__anonymous_object1563, const char *__fmt__PCc_1, ...))__fmt__Fi_R9sofstreamPCc__1), ((void *)_p0));
     553    }
     554    ((void)(((void)(_tmp_cp_ret7=((struct ofstream *)___operator_bitor__A0_1_0_0___sepPrt__PFb_Rd0___sepReset__PF_Rd0___sepReset__PF_Rd0b___sepGetCur__PFPCc_Rd0___sepSetCur__PF_Rd0PCc___getNL__PFb_Rd0___setNL__PF_Rd0b___sepOn__PF_Rd0___sepOff__PF_Rd0___sepDisable__PFb_Rd0___sepEnable__PFb_Rd0___sepGet__PFPCc_Rd0___sepSet__PF_Rd0PCc___sepGetTuple__PFPCc_Rd0___sepSetTuple__PF_Rd0PCc___fail__PFi_Rd0___flush__PFi_Rd0___open__PF_Rd0PCcPCc___close__PF_Rd0___write__PFRd0_Rd0PCcUl___fmt__PFi_Rd0PCc__FRd0_Rd0PFRd0_Rd0___1(((_Bool (*)(void *__anonymous_object1564))__sepPrt__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1565))__sepReset__F_R9sofstream__1), ((void (*)(void *__anonymous_object1566, _Bool __anonymous_object1567))__sepReset__F_R9sofstreamb__1), ((const char *(*)(void *__anonymous_object1568))__sepGetCur__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1569, const char *__anonymous_object1570))__sepSetCur__F_R9sofstreamPCc__1), ((_Bool (*)(void *__anonymous_object1571))__getNL__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1572, _Bool __anonymous_object1573))__setNL__F_R9sofstreamb__1), ((void (*)(void *__anonymous_object1574))__sepOn__F_R9sofstream__1), ((void (*)(void *__anonymous_object1575))__sepOff__F_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1576))__sepDisable__Fb_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1577))__sepEnable__Fb_R9sofstream__1), ((const char *(*)(void *__anonymous_object1578))__sepGet__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1579, const char *__anonymous_object1580))__sepSet__F_R9sofstreamPCc__1), ((const char *(*)(void *__anonymous_object1581))__sepGetTuple__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1582, const char *__anonymous_object1583))__sepSetTuple__F_R9sofstreamPCc__1), ((signed int (*)(void *__anonymous_object1584))__fail__Fi_R9sofstream__1), ((signed int (*)(void *__anonymous_object1585))__flush__Fi_R9sofstream__1), ((void (*)(void *__os__R7tostype_1, const char *__name__PCc_1, const char *__mode__PCc_1))__open__F_R9sofstreamPCcPCc__1), ((void (*)(void *__os__R7tostype_1))__close__F_R9sofstream__1), ((void *(*)(void *__anonymous_object1586, const char *__anonymous_object1587, unsigned long int __anonymous_object1588))__write__FR9sofstream_R9sofstreamPCcUl__1), ((signed int (*)(void *__anonymous_object1589, const char *__fmt__PCc_1, ...))__fmt__Fi_R9sofstreamPCc__1), ((void *)(((void)(_tmp_cp_ret6=((struct ofstream *)___operator_bitor__A0_1_0_0___sepPrt__PFb_Rd0___sepReset__PF_Rd0___sepReset__PF_Rd0b___sepGetCur__PFPCc_Rd0___sepSetCur__PF_Rd0PCc___getNL__PFb_Rd0___setNL__PF_Rd0b___sepOn__PF_Rd0___sepOff__PF_Rd0___sepDisable__PFb_Rd0___sepEnable__PFb_Rd0___sepGet__PFPCc_Rd0___sepSet__PF_Rd0PCc___sepGetTuple__PFPCc_Rd0___sepSetTuple__PF_Rd0PCc___fail__PFi_Rd0___flush__PFi_Rd0___open__PF_Rd0PCcPCc___close__PF_Rd0___write__PFRd0_Rd0PCcUl___fmt__PFi_Rd0PCc__FRd0_Rd0Sc__1(((_Bool (*)(void 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*__anonymous_object1605, const char *__anonymous_object1606))__sepSet__F_R9sofstreamPCc__1), ((const char *(*)(void *__anonymous_object1607))__sepGetTuple__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1608, const char *__anonymous_object1609))__sepSetTuple__F_R9sofstreamPCc__1), ((signed int (*)(void *__anonymous_object1610))__fail__Fi_R9sofstream__1), ((signed int (*)(void *__anonymous_object1611))__flush__Fi_R9sofstream__1), ((void (*)(void *__os__R7tostype_1, const char *__name__PCc_1, const char *__mode__PCc_1))__open__F_R9sofstreamPCcPCc__1), ((void (*)(void *__os__R7tostype_1))__close__F_R9sofstream__1), ((void *(*)(void *__anonymous_object1612, const char *__anonymous_object1613, unsigned long int __anonymous_object1614))__write__FR9sofstream_R9sofstreamPCcUl__1), ((signed int (*)(void *__anonymous_object1615, const char *__fmt__PCc_1, ...))__fmt__Fi_R9sofstreamPCc__1), ((void *)(((void)(_tmp_cp_ret5=((struct ofstream 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*__mode__PCc_1))__open__F_R9sofstreamPCcPCc__1), ((void (*)(void *__os__R7tostype_1))__close__F_R9sofstream__1), ((void *(*)(void *__anonymous_object1638, const char *__anonymous_object1639, unsigned long int __anonymous_object1640))__write__FR9sofstream_R9sofstreamPCcUl__1), ((signed int (*)(void *__anonymous_object1641, const char *__fmt__PCc_1, ...))__fmt__Fi_R9sofstreamPCc__1), ((void *)__sout__R9sofstream_1), "signed char ")))) , _tmp_cp_ret5)), __v__Sc_1)))) , _tmp_cp_ret6)), ((void *(*)(void *__anonymous_object1642))(&_thunk1)))))) , _tmp_cp_ret7));
    485555}
    486556void __f__F_Uc__1(unsigned char __v__Uc_1){
     
    489559    struct ofstream *_tmp_cp_ret10;
    490560    __attribute__ ((unused)) struct ofstream *_thunk2(struct ofstream *_p0){
    491         return __endl__A0_1_0_0___sepPrt__PFb_Rd0___sepReset__PF_Rd0___sepReset__PF_Rd0b___sepGetCur__PFPCc_Rd0___sepSetCur__PF_Rd0PCc___getNL__PFb_Rd0___setNL__PF_Rd0b___sepOn__PF_Rd0___sepOff__PF_Rd0___sepDisable__PFb_Rd0___sepEnable__PFb_Rd0___sepGet__PFPCc_Rd0___sepSet__PF_Rd0PCc___sepGetTuple__PFPCc_Rd0___sepSetTuple__PF_Rd0PCc___fail__PFi_Rd0___flush__PFi_Rd0___open__PF_Rd0PCcPCc___close__PF_Rd0___write__PFRd0_Rd0PCcUl___fmt__PFi_Rd0PCc__FRd0_Rd0__1(((_Bool (*)(void *__anonymous_object1589))__sepPrt__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1590))__sepReset__F_R9sofstream__1), ((void (*)(void *__anonymous_object1591, _Bool __anonymous_object1592))__sepReset__F_R9sofstreamb__1), ((const char *(*)(void *__anonymous_object1593))__sepGetCur__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1594, const char *__anonymous_object1595))__sepSetCur__F_R9sofstreamPCc__1), ((_Bool (*)(void *__anonymous_object1596))__getNL__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1597, _Bool __anonymous_object1598))__setNL__F_R9sofstreamb__1), ((void (*)(void *__anonymous_object1599))__sepOn__F_R9sofstream__1), ((void (*)(void *__anonymous_object1600))__sepOff__F_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1601))__sepDisable__Fb_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1602))__sepEnable__Fb_R9sofstream__1), ((const char *(*)(void *__anonymous_object1603))__sepGet__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1604, const char *__anonymous_object1605))__sepSet__F_R9sofstreamPCc__1), ((const char *(*)(void *__anonymous_object1606))__sepGetTuple__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1607, const char *__anonymous_object1608))__sepSetTuple__F_R9sofstreamPCc__1), ((signed int (*)(void *__anonymous_object1609))__fail__Fi_R9sofstream__1), ((signed int (*)(void *__anonymous_object1610))__flush__Fi_R9sofstream__1), ((void (*)(void *__os__R7tostype_1, const char *__name__PCc_1, const char *__mode__PCc_1))__open__F_R9sofstreamPCcPCc__1), ((void (*)(void *__os__R7tostype_1))__close__F_R9sofstream__1), ((void *(*)(void *__anonymous_object1611, const char *__anonymous_object1612, unsigned long int __anonymous_object1613))__write__FR9sofstream_R9sofstreamPCcUl__1), ((signed int (*)(void *__anonymous_object1614, const char *__fmt__PCc_1, ...))__fmt__Fi_R9sofstreamPCc__1), ((void *)_p0));
    492     }
    493     ((void)(((void)(_tmp_cp_ret10=((struct ofstream *)___operator_bitor__A0_1_0_0___sepPrt__PFb_Rd0___sepReset__PF_Rd0___sepReset__PF_Rd0b___sepGetCur__PFPCc_Rd0___sepSetCur__PF_Rd0PCc___getNL__PFb_Rd0___setNL__PF_Rd0b___sepOn__PF_Rd0___sepOff__PF_Rd0___sepDisable__PFb_Rd0___sepEnable__PFb_Rd0___sepGet__PFPCc_Rd0___sepSet__PF_Rd0PCc___sepGetTuple__PFPCc_Rd0___sepSetTuple__PF_Rd0PCc___fail__PFi_Rd0___flush__PFi_Rd0___open__PF_Rd0PCcPCc___close__PF_Rd0___write__PFRd0_Rd0PCcUl___fmt__PFi_Rd0PCc__FRd0_Rd0PFRd0_Rd0___1(((_Bool (*)(void *__anonymous_object1615))__sepPrt__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1616))__sepReset__F_R9sofstream__1), ((void (*)(void *__anonymous_object1617, _Bool __anonymous_object1618))__sepReset__F_R9sofstreamb__1), ((const char *(*)(void *__anonymous_object1619))__sepGetCur__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1620, const char *__anonymous_object1621))__sepSetCur__F_R9sofstreamPCc__1), ((_Bool (*)(void *__anonymous_object1622))__getNL__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1623, _Bool __anonymous_object1624))__setNL__F_R9sofstreamb__1), ((void (*)(void *__anonymous_object1625))__sepOn__F_R9sofstream__1), ((void (*)(void *__anonymous_object1626))__sepOff__F_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1627))__sepDisable__Fb_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1628))__sepEnable__Fb_R9sofstream__1), ((const char *(*)(void *__anonymous_object1629))__sepGet__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1630, const char *__anonymous_object1631))__sepSet__F_R9sofstreamPCc__1), ((const char *(*)(void *__anonymous_object1632))__sepGetTuple__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1633, const char *__anonymous_object1634))__sepSetTuple__F_R9sofstreamPCc__1), ((signed int (*)(void *__anonymous_object1635))__fail__Fi_R9sofstream__1), ((signed int (*)(void *__anonymous_object1636))__flush__Fi_R9sofstream__1), ((void (*)(void *__os__R7tostype_1, const char *__name__PCc_1, const char *__mode__PCc_1))__open__F_R9sofstreamPCcPCc__1), ((void (*)(void *__os__R7tostype_1))__close__F_R9sofstream__1), ((void *(*)(void *__anonymous_object1637, const char *__anonymous_object1638, unsigned long int __anonymous_object1639))__write__FR9sofstream_R9sofstreamPCcUl__1), ((signed int (*)(void *__anonymous_object1640, const char *__fmt__PCc_1, ...))__fmt__Fi_R9sofstreamPCc__1), ((void *)(((void)(_tmp_cp_ret9=((struct ofstream *)___operator_bitor__A0_1_0_0___sepPrt__PFb_Rd0___sepReset__PF_Rd0___sepReset__PF_Rd0b___sepGetCur__PFPCc_Rd0___sepSetCur__PF_Rd0PCc___getNL__PFb_Rd0___setNL__PF_Rd0b___sepOn__PF_Rd0___sepOff__PF_Rd0___sepDisable__PFb_Rd0___sepEnable__PFb_Rd0___sepGet__PFPCc_Rd0___sepSet__PF_Rd0PCc___sepGetTuple__PFPCc_Rd0___sepSetTuple__PF_Rd0PCc___fail__PFi_Rd0___flush__PFi_Rd0___open__PF_Rd0PCcPCc___close__PF_Rd0___write__PFRd0_Rd0PCcUl___fmt__PFi_Rd0PCc__FRd0_Rd0Uc__1(((_Bool (*)(void 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*__anonymous_object1656, const char *__anonymous_object1657))__sepSet__F_R9sofstreamPCc__1), ((const char *(*)(void *__anonymous_object1658))__sepGetTuple__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1659, const char *__anonymous_object1660))__sepSetTuple__F_R9sofstreamPCc__1), ((signed int (*)(void *__anonymous_object1661))__fail__Fi_R9sofstream__1), ((signed int (*)(void *__anonymous_object1662))__flush__Fi_R9sofstream__1), ((void (*)(void *__os__R7tostype_1, const char *__name__PCc_1, const char *__mode__PCc_1))__open__F_R9sofstreamPCcPCc__1), ((void (*)(void *__os__R7tostype_1))__close__F_R9sofstream__1), ((void *(*)(void *__anonymous_object1663, const char *__anonymous_object1664, unsigned long int __anonymous_object1665))__write__FR9sofstream_R9sofstreamPCcUl__1), ((signed int (*)(void *__anonymous_object1666, const char *__fmt__PCc_1, ...))__fmt__Fi_R9sofstreamPCc__1), ((void *)(((void)(_tmp_cp_ret8=((struct ofstream *)___operator_bitor__A0_1_0_0___sepPrt__PFb_Rd0___sepReset__PF_Rd0___sepReset__PF_Rd0b___sepGetCur__PFPCc_Rd0___sepSetCur__PF_Rd0PCc___getNL__PFb_Rd0___setNL__PF_Rd0b___sepOn__PF_Rd0___sepOff__PF_Rd0___sepDisable__PFb_Rd0___sepEnable__PFb_Rd0___sepGet__PFPCc_Rd0___sepSet__PF_Rd0PCc___sepGetTuple__PFPCc_Rd0___sepSetTuple__PF_Rd0PCc___fail__PFi_Rd0___flush__PFi_Rd0___open__PF_Rd0PCcPCc___close__PF_Rd0___write__PFRd0_Rd0PCcUl___fmt__PFi_Rd0PCc__FRd0_Rd0PCc__1(((_Bool (*)(void *__anonymous_object1667))__sepPrt__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1668))__sepReset__F_R9sofstream__1), ((void (*)(void *__anonymous_object1669, _Bool __anonymous_object1670))__sepReset__F_R9sofstreamb__1), ((const char *(*)(void *__anonymous_object1671))__sepGetCur__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1672, const char *__anonymous_object1673))__sepSetCur__F_R9sofstreamPCc__1), ((_Bool (*)(void *__anonymous_object1674))__getNL__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1675, _Bool __anonymous_object1676))__setNL__F_R9sofstreamb__1), ((void (*)(void *__anonymous_object1677))__sepOn__F_R9sofstream__1), ((void (*)(void *__anonymous_object1678))__sepOff__F_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1679))__sepDisable__Fb_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1680))__sepEnable__Fb_R9sofstream__1), ((const char *(*)(void *__anonymous_object1681))__sepGet__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1682, const char *__anonymous_object1683))__sepSet__F_R9sofstreamPCc__1), ((const char *(*)(void *__anonymous_object1684))__sepGetTuple__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1685, const char *__anonymous_object1686))__sepSetTuple__F_R9sofstreamPCc__1), ((signed int (*)(void *__anonymous_object1687))__fail__Fi_R9sofstream__1), ((signed int (*)(void *__anonymous_object1688))__flush__Fi_R9sofstream__1), ((void (*)(void *__os__R7tostype_1, const char *__name__PCc_1, const char *__mode__PCc_1))__open__F_R9sofstreamPCcPCc__1), ((void (*)(void *__os__R7tostype_1))__close__F_R9sofstream__1), ((void *(*)(void *__anonymous_object1689, const char *__anonymous_object1690, unsigned long int __anonymous_object1691))__write__FR9sofstream_R9sofstreamPCcUl__1), ((signed int (*)(void *__anonymous_object1692, const char *__fmt__PCc_1, ...))__fmt__Fi_R9sofstreamPCc__1), ((void *)__sout__R9sofstream_1), "unsigned char ")))) , _tmp_cp_ret8)), __v__Uc_1)))) , _tmp_cp_ret9)), ((void *(*)(void *__anonymous_object1693))(&_thunk2)))))) , _tmp_cp_ret10));
     561        return __endl__A0_1_0_0___sepPrt__PFb_Rd0___sepReset__PF_Rd0___sepReset__PF_Rd0b___sepGetCur__PFPCc_Rd0___sepSetCur__PF_Rd0PCc___getNL__PFb_Rd0___setNL__PF_Rd0b___sepOn__PF_Rd0___sepOff__PF_Rd0___sepDisable__PFb_Rd0___sepEnable__PFb_Rd0___sepGet__PFPCc_Rd0___sepSet__PF_Rd0PCc___sepGetTuple__PFPCc_Rd0___sepSetTuple__PF_Rd0PCc___fail__PFi_Rd0___flush__PFi_Rd0___open__PF_Rd0PCcPCc___close__PF_Rd0___write__PFRd0_Rd0PCcUl___fmt__PFi_Rd0PCc__FRd0_Rd0__1(((_Bool (*)(void *__anonymous_object1643))__sepPrt__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1644))__sepReset__F_R9sofstream__1), ((void (*)(void *__anonymous_object1645, _Bool __anonymous_object1646))__sepReset__F_R9sofstreamb__1), ((const char *(*)(void *__anonymous_object1647))__sepGetCur__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1648, const char *__anonymous_object1649))__sepSetCur__F_R9sofstreamPCc__1), ((_Bool (*)(void *__anonymous_object1650))__getNL__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1651, _Bool __anonymous_object1652))__setNL__F_R9sofstreamb__1), ((void (*)(void *__anonymous_object1653))__sepOn__F_R9sofstream__1), ((void (*)(void *__anonymous_object1654))__sepOff__F_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1655))__sepDisable__Fb_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1656))__sepEnable__Fb_R9sofstream__1), ((const char *(*)(void *__anonymous_object1657))__sepGet__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1658, const char *__anonymous_object1659))__sepSet__F_R9sofstreamPCc__1), ((const char *(*)(void *__anonymous_object1660))__sepGetTuple__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1661, const char *__anonymous_object1662))__sepSetTuple__F_R9sofstreamPCc__1), ((signed int (*)(void *__anonymous_object1663))__fail__Fi_R9sofstream__1), ((signed int (*)(void *__anonymous_object1664))__flush__Fi_R9sofstream__1), ((void (*)(void *__os__R7tostype_1, const char *__name__PCc_1, const char *__mode__PCc_1))__open__F_R9sofstreamPCcPCc__1), ((void (*)(void *__os__R7tostype_1))__close__F_R9sofstream__1), ((void *(*)(void *__anonymous_object1665, const char *__anonymous_object1666, unsigned long int __anonymous_object1667))__write__FR9sofstream_R9sofstreamPCcUl__1), ((signed int (*)(void *__anonymous_object1668, const char *__fmt__PCc_1, ...))__fmt__Fi_R9sofstreamPCc__1), ((void *)_p0));
     562    }
     563    ((void)(((void)(_tmp_cp_ret10=((struct ofstream *)___operator_bitor__A0_1_0_0___sepPrt__PFb_Rd0___sepReset__PF_Rd0___sepReset__PF_Rd0b___sepGetCur__PFPCc_Rd0___sepSetCur__PF_Rd0PCc___getNL__PFb_Rd0___setNL__PF_Rd0b___sepOn__PF_Rd0___sepOff__PF_Rd0___sepDisable__PFb_Rd0___sepEnable__PFb_Rd0___sepGet__PFPCc_Rd0___sepSet__PF_Rd0PCc___sepGetTuple__PFPCc_Rd0___sepSetTuple__PF_Rd0PCc___fail__PFi_Rd0___flush__PFi_Rd0___open__PF_Rd0PCcPCc___close__PF_Rd0___write__PFRd0_Rd0PCcUl___fmt__PFi_Rd0PCc__FRd0_Rd0PFRd0_Rd0___1(((_Bool (*)(void *__anonymous_object1669))__sepPrt__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1670))__sepReset__F_R9sofstream__1), ((void (*)(void *__anonymous_object1671, _Bool __anonymous_object1672))__sepReset__F_R9sofstreamb__1), ((const char *(*)(void *__anonymous_object1673))__sepGetCur__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1674, const char *__anonymous_object1675))__sepSetCur__F_R9sofstreamPCc__1), ((_Bool (*)(void 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*__os__R7tostype_1, const char *__name__PCc_1, const char *__mode__PCc_1))__open__F_R9sofstreamPCcPCc__1), ((void (*)(void *__os__R7tostype_1))__close__F_R9sofstream__1), ((void *(*)(void *__anonymous_object1691, const char *__anonymous_object1692, unsigned long int __anonymous_object1693))__write__FR9sofstream_R9sofstreamPCcUl__1), ((signed int (*)(void *__anonymous_object1694, const char *__fmt__PCc_1, ...))__fmt__Fi_R9sofstreamPCc__1), ((void *)(((void)(_tmp_cp_ret9=((struct ofstream *)___operator_bitor__A0_1_0_0___sepPrt__PFb_Rd0___sepReset__PF_Rd0___sepReset__PF_Rd0b___sepGetCur__PFPCc_Rd0___sepSetCur__PF_Rd0PCc___getNL__PFb_Rd0___setNL__PF_Rd0b___sepOn__PF_Rd0___sepOff__PF_Rd0___sepDisable__PFb_Rd0___sepEnable__PFb_Rd0___sepGet__PFPCc_Rd0___sepSet__PF_Rd0PCc___sepGetTuple__PFPCc_Rd0___sepSetTuple__PF_Rd0PCc___fail__PFi_Rd0___flush__PFi_Rd0___open__PF_Rd0PCcPCc___close__PF_Rd0___write__PFRd0_Rd0PCcUl___fmt__PFi_Rd0PCc__FRd0_Rd0Uc__1(((_Bool (*)(void 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*__anonymous_object1710, const char *__anonymous_object1711))__sepSet__F_R9sofstreamPCc__1), ((const char *(*)(void *__anonymous_object1712))__sepGetTuple__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1713, const char *__anonymous_object1714))__sepSetTuple__F_R9sofstreamPCc__1), ((signed int (*)(void *__anonymous_object1715))__fail__Fi_R9sofstream__1), ((signed int (*)(void *__anonymous_object1716))__flush__Fi_R9sofstream__1), ((void (*)(void *__os__R7tostype_1, const char *__name__PCc_1, const char *__mode__PCc_1))__open__F_R9sofstreamPCcPCc__1), ((void (*)(void *__os__R7tostype_1))__close__F_R9sofstream__1), ((void *(*)(void *__anonymous_object1717, const char *__anonymous_object1718, unsigned long int __anonymous_object1719))__write__FR9sofstream_R9sofstreamPCcUl__1), ((signed int (*)(void *__anonymous_object1720, const char *__fmt__PCc_1, ...))__fmt__Fi_R9sofstreamPCc__1), ((void *)(((void)(_tmp_cp_ret8=((struct ofstream *)___operator_bitor__A0_1_0_0___sepPrt__PFb_Rd0___sepReset__PF_Rd0___sepReset__PF_Rd0b___sepGetCur__PFPCc_Rd0___sepSetCur__PF_Rd0PCc___getNL__PFb_Rd0___setNL__PF_Rd0b___sepOn__PF_Rd0___sepOff__PF_Rd0___sepDisable__PFb_Rd0___sepEnable__PFb_Rd0___sepGet__PFPCc_Rd0___sepSet__PF_Rd0PCc___sepGetTuple__PFPCc_Rd0___sepSetTuple__PF_Rd0PCc___fail__PFi_Rd0___flush__PFi_Rd0___open__PF_Rd0PCcPCc___close__PF_Rd0___write__PFRd0_Rd0PCcUl___fmt__PFi_Rd0PCc__FRd0_Rd0PCc__1(((_Bool (*)(void *__anonymous_object1721))__sepPrt__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1722))__sepReset__F_R9sofstream__1), ((void (*)(void *__anonymous_object1723, _Bool __anonymous_object1724))__sepReset__F_R9sofstreamb__1), ((const char *(*)(void *__anonymous_object1725))__sepGetCur__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1726, const char *__anonymous_object1727))__sepSetCur__F_R9sofstreamPCc__1), ((_Bool (*)(void *__anonymous_object1728))__getNL__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1729, _Bool __anonymous_object1730))__setNL__F_R9sofstreamb__1), ((void (*)(void *__anonymous_object1731))__sepOn__F_R9sofstream__1), ((void (*)(void *__anonymous_object1732))__sepOff__F_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1733))__sepDisable__Fb_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1734))__sepEnable__Fb_R9sofstream__1), ((const char *(*)(void *__anonymous_object1735))__sepGet__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1736, const char *__anonymous_object1737))__sepSet__F_R9sofstreamPCc__1), ((const char *(*)(void *__anonymous_object1738))__sepGetTuple__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1739, const char *__anonymous_object1740))__sepSetTuple__F_R9sofstreamPCc__1), ((signed int (*)(void *__anonymous_object1741))__fail__Fi_R9sofstream__1), ((signed int (*)(void *__anonymous_object1742))__flush__Fi_R9sofstream__1), ((void (*)(void *__os__R7tostype_1, const char *__name__PCc_1, const char *__mode__PCc_1))__open__F_R9sofstreamPCcPCc__1), ((void (*)(void *__os__R7tostype_1))__close__F_R9sofstream__1), ((void *(*)(void *__anonymous_object1743, const char *__anonymous_object1744, unsigned long int __anonymous_object1745))__write__FR9sofstream_R9sofstreamPCcUl__1), ((signed int (*)(void *__anonymous_object1746, const char *__fmt__PCc_1, ...))__fmt__Fi_R9sofstreamPCc__1), ((void *)__sout__R9sofstream_1), "unsigned char ")))) , _tmp_cp_ret8)), __v__Uc_1)))) , _tmp_cp_ret9)), ((void *(*)(void *__anonymous_object1747))(&_thunk2)))))) , _tmp_cp_ret10));
    494564}
    495565void __f__F_s__1(signed short int __v__s_1){
     
    498568    struct ofstream *_tmp_cp_ret13;
    499569    __attribute__ ((unused)) struct ofstream *_thunk3(struct ofstream *_p0){
    500         return __endl__A0_1_0_0___sepPrt__PFb_Rd0___sepReset__PF_Rd0___sepReset__PF_Rd0b___sepGetCur__PFPCc_Rd0___sepSetCur__PF_Rd0PCc___getNL__PFb_Rd0___setNL__PF_Rd0b___sepOn__PF_Rd0___sepOff__PF_Rd0___sepDisable__PFb_Rd0___sepEnable__PFb_Rd0___sepGet__PFPCc_Rd0___sepSet__PF_Rd0PCc___sepGetTuple__PFPCc_Rd0___sepSetTuple__PF_Rd0PCc___fail__PFi_Rd0___flush__PFi_Rd0___open__PF_Rd0PCcPCc___close__PF_Rd0___write__PFRd0_Rd0PCcUl___fmt__PFi_Rd0PCc__FRd0_Rd0__1(((_Bool (*)(void *__anonymous_object1694))__sepPrt__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1695))__sepReset__F_R9sofstream__1), ((void (*)(void *__anonymous_object1696, _Bool __anonymous_object1697))__sepReset__F_R9sofstreamb__1), ((const char *(*)(void *__anonymous_object1698))__sepGetCur__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1699, const char *__anonymous_object1700))__sepSetCur__F_R9sofstreamPCc__1), ((_Bool (*)(void *__anonymous_object1701))__getNL__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1702, _Bool __anonymous_object1703))__setNL__F_R9sofstreamb__1), ((void (*)(void *__anonymous_object1704))__sepOn__F_R9sofstream__1), ((void (*)(void *__anonymous_object1705))__sepOff__F_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1706))__sepDisable__Fb_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1707))__sepEnable__Fb_R9sofstream__1), ((const char *(*)(void *__anonymous_object1708))__sepGet__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1709, const char *__anonymous_object1710))__sepSet__F_R9sofstreamPCc__1), ((const char *(*)(void *__anonymous_object1711))__sepGetTuple__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1712, const char *__anonymous_object1713))__sepSetTuple__F_R9sofstreamPCc__1), ((signed int (*)(void *__anonymous_object1714))__fail__Fi_R9sofstream__1), ((signed int (*)(void *__anonymous_object1715))__flush__Fi_R9sofstream__1), ((void (*)(void *__os__R7tostype_1, const char *__name__PCc_1, const char *__mode__PCc_1))__open__F_R9sofstreamPCcPCc__1), ((void (*)(void *__os__R7tostype_1))__close__F_R9sofstream__1), ((void *(*)(void *__anonymous_object1716, const char *__anonymous_object1717, unsigned long int __anonymous_object1718))__write__FR9sofstream_R9sofstreamPCcUl__1), ((signed int (*)(void *__anonymous_object1719, const char *__fmt__PCc_1, ...))__fmt__Fi_R9sofstreamPCc__1), ((void *)_p0));
    501     }
    502     ((void)(((void)(_tmp_cp_ret13=((struct ofstream *)___operator_bitor__A0_1_0_0___sepPrt__PFb_Rd0___sepReset__PF_Rd0___sepReset__PF_Rd0b___sepGetCur__PFPCc_Rd0___sepSetCur__PF_Rd0PCc___getNL__PFb_Rd0___setNL__PF_Rd0b___sepOn__PF_Rd0___sepOff__PF_Rd0___sepDisable__PFb_Rd0___sepEnable__PFb_Rd0___sepGet__PFPCc_Rd0___sepSet__PF_Rd0PCc___sepGetTuple__PFPCc_Rd0___sepSetTuple__PF_Rd0PCc___fail__PFi_Rd0___flush__PFi_Rd0___open__PF_Rd0PCcPCc___close__PF_Rd0___write__PFRd0_Rd0PCcUl___fmt__PFi_Rd0PCc__FRd0_Rd0PFRd0_Rd0___1(((_Bool (*)(void *__anonymous_object1720))__sepPrt__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1721))__sepReset__F_R9sofstream__1), ((void (*)(void *__anonymous_object1722, _Bool __anonymous_object1723))__sepReset__F_R9sofstreamb__1), ((const char *(*)(void *__anonymous_object1724))__sepGetCur__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1725, const char *__anonymous_object1726))__sepSetCur__F_R9sofstreamPCc__1), ((_Bool (*)(void *__anonymous_object1727))__getNL__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1728, _Bool __anonymous_object1729))__setNL__F_R9sofstreamb__1), ((void (*)(void *__anonymous_object1730))__sepOn__F_R9sofstream__1), ((void (*)(void *__anonymous_object1731))__sepOff__F_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1732))__sepDisable__Fb_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1733))__sepEnable__Fb_R9sofstream__1), ((const char *(*)(void *__anonymous_object1734))__sepGet__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1735, const char *__anonymous_object1736))__sepSet__F_R9sofstreamPCc__1), ((const char *(*)(void *__anonymous_object1737))__sepGetTuple__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1738, const char *__anonymous_object1739))__sepSetTuple__F_R9sofstreamPCc__1), ((signed int (*)(void *__anonymous_object1740))__fail__Fi_R9sofstream__1), ((signed int (*)(void *__anonymous_object1741))__flush__Fi_R9sofstream__1), ((void (*)(void *__os__R7tostype_1, const char *__name__PCc_1, const char *__mode__PCc_1))__open__F_R9sofstreamPCcPCc__1), ((void (*)(void *__os__R7tostype_1))__close__F_R9sofstream__1), ((void *(*)(void *__anonymous_object1742, const char *__anonymous_object1743, unsigned long int __anonymous_object1744))__write__FR9sofstream_R9sofstreamPCcUl__1), ((signed int (*)(void *__anonymous_object1745, const char *__fmt__PCc_1, ...))__fmt__Fi_R9sofstreamPCc__1), ((void *)(((void)(_tmp_cp_ret12=((struct ofstream *)___operator_bitor__A0_1_0_0___sepPrt__PFb_Rd0___sepReset__PF_Rd0___sepReset__PF_Rd0b___sepGetCur__PFPCc_Rd0___sepSetCur__PF_Rd0PCc___getNL__PFb_Rd0___setNL__PF_Rd0b___sepOn__PF_Rd0___sepOff__PF_Rd0___sepDisable__PFb_Rd0___sepEnable__PFb_Rd0___sepGet__PFPCc_Rd0___sepSet__PF_Rd0PCc___sepGetTuple__PFPCc_Rd0___sepSetTuple__PF_Rd0PCc___fail__PFi_Rd0___flush__PFi_Rd0___open__PF_Rd0PCcPCc___close__PF_Rd0___write__PFRd0_Rd0PCcUl___fmt__PFi_Rd0PCc__FRd0_Rd0s__1(((_Bool (*)(void *__anonymous_object1746))__sepPrt__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1747))__sepReset__F_R9sofstream__1), ((void (*)(void *__anonymous_object1748, _Bool __anonymous_object1749))__sepReset__F_R9sofstreamb__1), ((const char *(*)(void *__anonymous_object1750))__sepGetCur__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1751, const char *__anonymous_object1752))__sepSetCur__F_R9sofstreamPCc__1), ((_Bool (*)(void *__anonymous_object1753))__getNL__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1754, _Bool __anonymous_object1755))__setNL__F_R9sofstreamb__1), ((void (*)(void *__anonymous_object1756))__sepOn__F_R9sofstream__1), ((void (*)(void *__anonymous_object1757))__sepOff__F_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1758))__sepDisable__Fb_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1759))__sepEnable__Fb_R9sofstream__1), ((const char *(*)(void *__anonymous_object1760))__sepGet__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1761, const char *__anonymous_object1762))__sepSet__F_R9sofstreamPCc__1), ((const char *(*)(void *__anonymous_object1763))__sepGetTuple__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1764, const char *__anonymous_object1765))__sepSetTuple__F_R9sofstreamPCc__1), ((signed int (*)(void *__anonymous_object1766))__fail__Fi_R9sofstream__1), ((signed int (*)(void *__anonymous_object1767))__flush__Fi_R9sofstream__1), ((void (*)(void *__os__R7tostype_1, const char *__name__PCc_1, const char *__mode__PCc_1))__open__F_R9sofstreamPCcPCc__1), ((void (*)(void *__os__R7tostype_1))__close__F_R9sofstream__1), ((void *(*)(void *__anonymous_object1768, const char *__anonymous_object1769, unsigned long int __anonymous_object1770))__write__FR9sofstream_R9sofstreamPCcUl__1), ((signed int (*)(void *__anonymous_object1771, const char *__fmt__PCc_1, ...))__fmt__Fi_R9sofstreamPCc__1), ((void *)(((void)(_tmp_cp_ret11=((struct ofstream *)___operator_bitor__A0_1_0_0___sepPrt__PFb_Rd0___sepReset__PF_Rd0___sepReset__PF_Rd0b___sepGetCur__PFPCc_Rd0___sepSetCur__PF_Rd0PCc___getNL__PFb_Rd0___setNL__PF_Rd0b___sepOn__PF_Rd0___sepOff__PF_Rd0___sepDisable__PFb_Rd0___sepEnable__PFb_Rd0___sepGet__PFPCc_Rd0___sepSet__PF_Rd0PCc___sepGetTuple__PFPCc_Rd0___sepSetTuple__PF_Rd0PCc___fail__PFi_Rd0___flush__PFi_Rd0___open__PF_Rd0PCcPCc___close__PF_Rd0___write__PFRd0_Rd0PCcUl___fmt__PFi_Rd0PCc__FRd0_Rd0PCc__1(((_Bool (*)(void *__anonymous_object1772))__sepPrt__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1773))__sepReset__F_R9sofstream__1), ((void (*)(void *__anonymous_object1774, _Bool __anonymous_object1775))__sepReset__F_R9sofstreamb__1), ((const char *(*)(void *__anonymous_object1776))__sepGetCur__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1777, const char *__anonymous_object1778))__sepSetCur__F_R9sofstreamPCc__1), ((_Bool (*)(void *__anonymous_object1779))__getNL__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1780, _Bool __anonymous_object1781))__setNL__F_R9sofstreamb__1), ((void (*)(void *__anonymous_object1782))__sepOn__F_R9sofstream__1), ((void (*)(void *__anonymous_object1783))__sepOff__F_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1784))__sepDisable__Fb_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1785))__sepEnable__Fb_R9sofstream__1), ((const char *(*)(void *__anonymous_object1786))__sepGet__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1787, const char *__anonymous_object1788))__sepSet__F_R9sofstreamPCc__1), ((const char *(*)(void *__anonymous_object1789))__sepGetTuple__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1790, const char *__anonymous_object1791))__sepSetTuple__F_R9sofstreamPCc__1), ((signed int (*)(void *__anonymous_object1792))__fail__Fi_R9sofstream__1), ((signed int (*)(void *__anonymous_object1793))__flush__Fi_R9sofstream__1), ((void (*)(void *__os__R7tostype_1, const char *__name__PCc_1, const char *__mode__PCc_1))__open__F_R9sofstreamPCcPCc__1), ((void (*)(void *__os__R7tostype_1))__close__F_R9sofstream__1), ((void *(*)(void *__anonymous_object1794, const char *__anonymous_object1795, unsigned long int __anonymous_object1796))__write__FR9sofstream_R9sofstreamPCcUl__1), ((signed int (*)(void *__anonymous_object1797, const char *__fmt__PCc_1, ...))__fmt__Fi_R9sofstreamPCc__1), ((void *)__sout__R9sofstream_1), "signed short int")))) , _tmp_cp_ret11)), __v__s_1)))) , _tmp_cp_ret12)), ((void *(*)(void *__anonymous_object1798))(&_thunk3)))))) , _tmp_cp_ret13));
     570        return __endl__A0_1_0_0___sepPrt__PFb_Rd0___sepReset__PF_Rd0___sepReset__PF_Rd0b___sepGetCur__PFPCc_Rd0___sepSetCur__PF_Rd0PCc___getNL__PFb_Rd0___setNL__PF_Rd0b___sepOn__PF_Rd0___sepOff__PF_Rd0___sepDisable__PFb_Rd0___sepEnable__PFb_Rd0___sepGet__PFPCc_Rd0___sepSet__PF_Rd0PCc___sepGetTuple__PFPCc_Rd0___sepSetTuple__PF_Rd0PCc___fail__PFi_Rd0___flush__PFi_Rd0___open__PF_Rd0PCcPCc___close__PF_Rd0___write__PFRd0_Rd0PCcUl___fmt__PFi_Rd0PCc__FRd0_Rd0__1(((_Bool (*)(void *__anonymous_object1748))__sepPrt__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1749))__sepReset__F_R9sofstream__1), ((void (*)(void *__anonymous_object1750, _Bool __anonymous_object1751))__sepReset__F_R9sofstreamb__1), ((const char *(*)(void *__anonymous_object1752))__sepGetCur__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1753, const char *__anonymous_object1754))__sepSetCur__F_R9sofstreamPCc__1), ((_Bool (*)(void *__anonymous_object1755))__getNL__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1756, _Bool __anonymous_object1757))__setNL__F_R9sofstreamb__1), ((void (*)(void *__anonymous_object1758))__sepOn__F_R9sofstream__1), ((void (*)(void *__anonymous_object1759))__sepOff__F_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1760))__sepDisable__Fb_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1761))__sepEnable__Fb_R9sofstream__1), ((const char *(*)(void *__anonymous_object1762))__sepGet__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1763, const char *__anonymous_object1764))__sepSet__F_R9sofstreamPCc__1), ((const char *(*)(void *__anonymous_object1765))__sepGetTuple__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1766, const char *__anonymous_object1767))__sepSetTuple__F_R9sofstreamPCc__1), ((signed int (*)(void *__anonymous_object1768))__fail__Fi_R9sofstream__1), ((signed int (*)(void *__anonymous_object1769))__flush__Fi_R9sofstream__1), ((void (*)(void *__os__R7tostype_1, const char *__name__PCc_1, const char *__mode__PCc_1))__open__F_R9sofstreamPCcPCc__1), ((void (*)(void *__os__R7tostype_1))__close__F_R9sofstream__1), ((void *(*)(void *__anonymous_object1770, const char *__anonymous_object1771, unsigned long int __anonymous_object1772))__write__FR9sofstream_R9sofstreamPCcUl__1), ((signed int (*)(void *__anonymous_object1773, const char *__fmt__PCc_1, ...))__fmt__Fi_R9sofstreamPCc__1), ((void *)_p0));
     571    }
     572    ((void)(((void)(_tmp_cp_ret13=((struct ofstream *)___operator_bitor__A0_1_0_0___sepPrt__PFb_Rd0___sepReset__PF_Rd0___sepReset__PF_Rd0b___sepGetCur__PFPCc_Rd0___sepSetCur__PF_Rd0PCc___getNL__PFb_Rd0___setNL__PF_Rd0b___sepOn__PF_Rd0___sepOff__PF_Rd0___sepDisable__PFb_Rd0___sepEnable__PFb_Rd0___sepGet__PFPCc_Rd0___sepSet__PF_Rd0PCc___sepGetTuple__PFPCc_Rd0___sepSetTuple__PF_Rd0PCc___fail__PFi_Rd0___flush__PFi_Rd0___open__PF_Rd0PCcPCc___close__PF_Rd0___write__PFRd0_Rd0PCcUl___fmt__PFi_Rd0PCc__FRd0_Rd0PFRd0_Rd0___1(((_Bool (*)(void *__anonymous_object1774))__sepPrt__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1775))__sepReset__F_R9sofstream__1), ((void (*)(void *__anonymous_object1776, _Bool __anonymous_object1777))__sepReset__F_R9sofstreamb__1), ((const char *(*)(void *__anonymous_object1778))__sepGetCur__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1779, const char *__anonymous_object1780))__sepSetCur__F_R9sofstreamPCc__1), ((_Bool (*)(void *__anonymous_object1781))__getNL__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1782, _Bool __anonymous_object1783))__setNL__F_R9sofstreamb__1), ((void (*)(void *__anonymous_object1784))__sepOn__F_R9sofstream__1), ((void (*)(void *__anonymous_object1785))__sepOff__F_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1786))__sepDisable__Fb_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1787))__sepEnable__Fb_R9sofstream__1), ((const char *(*)(void *__anonymous_object1788))__sepGet__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1789, const char *__anonymous_object1790))__sepSet__F_R9sofstreamPCc__1), ((const char *(*)(void *__anonymous_object1791))__sepGetTuple__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1792, const char *__anonymous_object1793))__sepSetTuple__F_R9sofstreamPCc__1), ((signed int (*)(void *__anonymous_object1794))__fail__Fi_R9sofstream__1), ((signed int (*)(void *__anonymous_object1795))__flush__Fi_R9sofstream__1), ((void (*)(void *__os__R7tostype_1, const char *__name__PCc_1, const char *__mode__PCc_1))__open__F_R9sofstreamPCcPCc__1), ((void (*)(void *__os__R7tostype_1))__close__F_R9sofstream__1), ((void *(*)(void *__anonymous_object1796, const char *__anonymous_object1797, unsigned long int __anonymous_object1798))__write__FR9sofstream_R9sofstreamPCcUl__1), ((signed int (*)(void *__anonymous_object1799, const char *__fmt__PCc_1, ...))__fmt__Fi_R9sofstreamPCc__1), ((void *)(((void)(_tmp_cp_ret12=((struct ofstream *)___operator_bitor__A0_1_0_0___sepPrt__PFb_Rd0___sepReset__PF_Rd0___sepReset__PF_Rd0b___sepGetCur__PFPCc_Rd0___sepSetCur__PF_Rd0PCc___getNL__PFb_Rd0___setNL__PF_Rd0b___sepOn__PF_Rd0___sepOff__PF_Rd0___sepDisable__PFb_Rd0___sepEnable__PFb_Rd0___sepGet__PFPCc_Rd0___sepSet__PF_Rd0PCc___sepGetTuple__PFPCc_Rd0___sepSetTuple__PF_Rd0PCc___fail__PFi_Rd0___flush__PFi_Rd0___open__PF_Rd0PCcPCc___close__PF_Rd0___write__PFRd0_Rd0PCcUl___fmt__PFi_Rd0PCc__FRd0_Rd0s__1(((_Bool (*)(void 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*__mode__PCc_1))__open__F_R9sofstreamPCcPCc__1), ((void (*)(void *__os__R7tostype_1))__close__F_R9sofstream__1), ((void *(*)(void *__anonymous_object1848, const char *__anonymous_object1849, unsigned long int __anonymous_object1850))__write__FR9sofstream_R9sofstreamPCcUl__1), ((signed int (*)(void *__anonymous_object1851, const char *__fmt__PCc_1, ...))__fmt__Fi_R9sofstreamPCc__1), ((void *)__sout__R9sofstream_1), "signed short int")))) , _tmp_cp_ret11)), __v__s_1)))) , _tmp_cp_ret12)), ((void *(*)(void *__anonymous_object1852))(&_thunk3)))))) , _tmp_cp_ret13));
    503573}
    504574void __f__F_Us__1(unsigned short int __v__Us_1){
     
    507577    struct ofstream *_tmp_cp_ret16;
    508578    __attribute__ ((unused)) struct ofstream *_thunk4(struct ofstream *_p0){
    509         return __endl__A0_1_0_0___sepPrt__PFb_Rd0___sepReset__PF_Rd0___sepReset__PF_Rd0b___sepGetCur__PFPCc_Rd0___sepSetCur__PF_Rd0PCc___getNL__PFb_Rd0___setNL__PF_Rd0b___sepOn__PF_Rd0___sepOff__PF_Rd0___sepDisable__PFb_Rd0___sepEnable__PFb_Rd0___sepGet__PFPCc_Rd0___sepSet__PF_Rd0PCc___sepGetTuple__PFPCc_Rd0___sepSetTuple__PF_Rd0PCc___fail__PFi_Rd0___flush__PFi_Rd0___open__PF_Rd0PCcPCc___close__PF_Rd0___write__PFRd0_Rd0PCcUl___fmt__PFi_Rd0PCc__FRd0_Rd0__1(((_Bool (*)(void *__anonymous_object1799))__sepPrt__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1800))__sepReset__F_R9sofstream__1), ((void (*)(void *__anonymous_object1801, _Bool __anonymous_object1802))__sepReset__F_R9sofstreamb__1), ((const char *(*)(void *__anonymous_object1803))__sepGetCur__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1804, const char *__anonymous_object1805))__sepSetCur__F_R9sofstreamPCc__1), ((_Bool (*)(void *__anonymous_object1806))__getNL__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1807, _Bool __anonymous_object1808))__setNL__F_R9sofstreamb__1), ((void (*)(void *__anonymous_object1809))__sepOn__F_R9sofstream__1), ((void (*)(void *__anonymous_object1810))__sepOff__F_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1811))__sepDisable__Fb_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1812))__sepEnable__Fb_R9sofstream__1), ((const char *(*)(void *__anonymous_object1813))__sepGet__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1814, const char *__anonymous_object1815))__sepSet__F_R9sofstreamPCc__1), ((const char *(*)(void *__anonymous_object1816))__sepGetTuple__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1817, const char *__anonymous_object1818))__sepSetTuple__F_R9sofstreamPCc__1), ((signed int (*)(void *__anonymous_object1819))__fail__Fi_R9sofstream__1), ((signed int (*)(void *__anonymous_object1820))__flush__Fi_R9sofstream__1), ((void (*)(void *__os__R7tostype_1, const char *__name__PCc_1, const char *__mode__PCc_1))__open__F_R9sofstreamPCcPCc__1), ((void (*)(void *__os__R7tostype_1))__close__F_R9sofstream__1), ((void *(*)(void *__anonymous_object1821, const char *__anonymous_object1822, unsigned long int __anonymous_object1823))__write__FR9sofstream_R9sofstreamPCcUl__1), ((signed int (*)(void *__anonymous_object1824, const char *__fmt__PCc_1, ...))__fmt__Fi_R9sofstreamPCc__1), ((void *)_p0));
    510     }
    511     ((void)(((void)(_tmp_cp_ret16=((struct ofstream *)___operator_bitor__A0_1_0_0___sepPrt__PFb_Rd0___sepReset__PF_Rd0___sepReset__PF_Rd0b___sepGetCur__PFPCc_Rd0___sepSetCur__PF_Rd0PCc___getNL__PFb_Rd0___setNL__PF_Rd0b___sepOn__PF_Rd0___sepOff__PF_Rd0___sepDisable__PFb_Rd0___sepEnable__PFb_Rd0___sepGet__PFPCc_Rd0___sepSet__PF_Rd0PCc___sepGetTuple__PFPCc_Rd0___sepSetTuple__PF_Rd0PCc___fail__PFi_Rd0___flush__PFi_Rd0___open__PF_Rd0PCcPCc___close__PF_Rd0___write__PFRd0_Rd0PCcUl___fmt__PFi_Rd0PCc__FRd0_Rd0PFRd0_Rd0___1(((_Bool (*)(void *__anonymous_object1825))__sepPrt__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1826))__sepReset__F_R9sofstream__1), ((void (*)(void *__anonymous_object1827, _Bool __anonymous_object1828))__sepReset__F_R9sofstreamb__1), ((const char *(*)(void *__anonymous_object1829))__sepGetCur__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1830, const char *__anonymous_object1831))__sepSetCur__F_R9sofstreamPCc__1), ((_Bool (*)(void *__anonymous_object1832))__getNL__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1833, _Bool __anonymous_object1834))__setNL__F_R9sofstreamb__1), ((void (*)(void *__anonymous_object1835))__sepOn__F_R9sofstream__1), ((void (*)(void *__anonymous_object1836))__sepOff__F_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1837))__sepDisable__Fb_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1838))__sepEnable__Fb_R9sofstream__1), ((const char *(*)(void *__anonymous_object1839))__sepGet__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1840, const char *__anonymous_object1841))__sepSet__F_R9sofstreamPCc__1), ((const char *(*)(void *__anonymous_object1842))__sepGetTuple__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1843, const char *__anonymous_object1844))__sepSetTuple__F_R9sofstreamPCc__1), ((signed int (*)(void *__anonymous_object1845))__fail__Fi_R9sofstream__1), ((signed int (*)(void *__anonymous_object1846))__flush__Fi_R9sofstream__1), ((void (*)(void *__os__R7tostype_1, const char *__name__PCc_1, const char *__mode__PCc_1))__open__F_R9sofstreamPCcPCc__1), ((void (*)(void *__os__R7tostype_1))__close__F_R9sofstream__1), ((void *(*)(void *__anonymous_object1847, const char *__anonymous_object1848, unsigned long int __anonymous_object1849))__write__FR9sofstream_R9sofstreamPCcUl__1), ((signed int (*)(void *__anonymous_object1850, const char *__fmt__PCc_1, ...))__fmt__Fi_R9sofstreamPCc__1), ((void *)(((void)(_tmp_cp_ret15=((struct ofstream *)___operator_bitor__A0_1_0_0___sepPrt__PFb_Rd0___sepReset__PF_Rd0___sepReset__PF_Rd0b___sepGetCur__PFPCc_Rd0___sepSetCur__PF_Rd0PCc___getNL__PFb_Rd0___setNL__PF_Rd0b___sepOn__PF_Rd0___sepOff__PF_Rd0___sepDisable__PFb_Rd0___sepEnable__PFb_Rd0___sepGet__PFPCc_Rd0___sepSet__PF_Rd0PCc___sepGetTuple__PFPCc_Rd0___sepSetTuple__PF_Rd0PCc___fail__PFi_Rd0___flush__PFi_Rd0___open__PF_Rd0PCcPCc___close__PF_Rd0___write__PFRd0_Rd0PCcUl___fmt__PFi_Rd0PCc__FRd0_Rd0Us__1(((_Bool (*)(void *__anonymous_object1851))__sepPrt__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1852))__sepReset__F_R9sofstream__1), ((void (*)(void *__anonymous_object1853, _Bool __anonymous_object1854))__sepReset__F_R9sofstreamb__1), ((const char *(*)(void *__anonymous_object1855))__sepGetCur__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1856, const char *__anonymous_object1857))__sepSetCur__F_R9sofstreamPCc__1), ((_Bool (*)(void *__anonymous_object1858))__getNL__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1859, _Bool __anonymous_object1860))__setNL__F_R9sofstreamb__1), ((void (*)(void *__anonymous_object1861))__sepOn__F_R9sofstream__1), ((void (*)(void *__anonymous_object1862))__sepOff__F_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1863))__sepDisable__Fb_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1864))__sepEnable__Fb_R9sofstream__1), ((const char *(*)(void *__anonymous_object1865))__sepGet__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1866, const char *__anonymous_object1867))__sepSet__F_R9sofstreamPCc__1), ((const char *(*)(void *__anonymous_object1868))__sepGetTuple__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1869, const char *__anonymous_object1870))__sepSetTuple__F_R9sofstreamPCc__1), ((signed int (*)(void *__anonymous_object1871))__fail__Fi_R9sofstream__1), ((signed int (*)(void *__anonymous_object1872))__flush__Fi_R9sofstream__1), ((void (*)(void *__os__R7tostype_1, const char *__name__PCc_1, const char *__mode__PCc_1))__open__F_R9sofstreamPCcPCc__1), ((void (*)(void *__os__R7tostype_1))__close__F_R9sofstream__1), ((void *(*)(void *__anonymous_object1873, const char *__anonymous_object1874, unsigned long int __anonymous_object1875))__write__FR9sofstream_R9sofstreamPCcUl__1), ((signed int (*)(void *__anonymous_object1876, const char *__fmt__PCc_1, ...))__fmt__Fi_R9sofstreamPCc__1), ((void *)(((void)(_tmp_cp_ret14=((struct ofstream *)___operator_bitor__A0_1_0_0___sepPrt__PFb_Rd0___sepReset__PF_Rd0___sepReset__PF_Rd0b___sepGetCur__PFPCc_Rd0___sepSetCur__PF_Rd0PCc___getNL__PFb_Rd0___setNL__PF_Rd0b___sepOn__PF_Rd0___sepOff__PF_Rd0___sepDisable__PFb_Rd0___sepEnable__PFb_Rd0___sepGet__PFPCc_Rd0___sepSet__PF_Rd0PCc___sepGetTuple__PFPCc_Rd0___sepSetTuple__PF_Rd0PCc___fail__PFi_Rd0___flush__PFi_Rd0___open__PF_Rd0PCcPCc___close__PF_Rd0___write__PFRd0_Rd0PCcUl___fmt__PFi_Rd0PCc__FRd0_Rd0PCc__1(((_Bool (*)(void *__anonymous_object1877))__sepPrt__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1878))__sepReset__F_R9sofstream__1), ((void (*)(void *__anonymous_object1879, _Bool __anonymous_object1880))__sepReset__F_R9sofstreamb__1), ((const char *(*)(void *__anonymous_object1881))__sepGetCur__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1882, const char *__anonymous_object1883))__sepSetCur__F_R9sofstreamPCc__1), ((_Bool (*)(void *__anonymous_object1884))__getNL__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1885, _Bool __anonymous_object1886))__setNL__F_R9sofstreamb__1), ((void (*)(void *__anonymous_object1887))__sepOn__F_R9sofstream__1), ((void (*)(void *__anonymous_object1888))__sepOff__F_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1889))__sepDisable__Fb_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1890))__sepEnable__Fb_R9sofstream__1), ((const char *(*)(void *__anonymous_object1891))__sepGet__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1892, const char *__anonymous_object1893))__sepSet__F_R9sofstreamPCc__1), ((const char *(*)(void *__anonymous_object1894))__sepGetTuple__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1895, const char *__anonymous_object1896))__sepSetTuple__F_R9sofstreamPCc__1), ((signed int (*)(void *__anonymous_object1897))__fail__Fi_R9sofstream__1), ((signed int (*)(void *__anonymous_object1898))__flush__Fi_R9sofstream__1), ((void (*)(void *__os__R7tostype_1, const char *__name__PCc_1, const char *__mode__PCc_1))__open__F_R9sofstreamPCcPCc__1), ((void (*)(void *__os__R7tostype_1))__close__F_R9sofstream__1), ((void *(*)(void *__anonymous_object1899, const char *__anonymous_object1900, unsigned long int __anonymous_object1901))__write__FR9sofstream_R9sofstreamPCcUl__1), ((signed int (*)(void *__anonymous_object1902, const char *__fmt__PCc_1, ...))__fmt__Fi_R9sofstreamPCc__1), ((void *)__sout__R9sofstream_1), "unsigned short int")))) , _tmp_cp_ret14)), __v__Us_1)))) , _tmp_cp_ret15)), ((void *(*)(void *__anonymous_object1903))(&_thunk4)))))) , _tmp_cp_ret16));
     579        return __endl__A0_1_0_0___sepPrt__PFb_Rd0___sepReset__PF_Rd0___sepReset__PF_Rd0b___sepGetCur__PFPCc_Rd0___sepSetCur__PF_Rd0PCc___getNL__PFb_Rd0___setNL__PF_Rd0b___sepOn__PF_Rd0___sepOff__PF_Rd0___sepDisable__PFb_Rd0___sepEnable__PFb_Rd0___sepGet__PFPCc_Rd0___sepSet__PF_Rd0PCc___sepGetTuple__PFPCc_Rd0___sepSetTuple__PF_Rd0PCc___fail__PFi_Rd0___flush__PFi_Rd0___open__PF_Rd0PCcPCc___close__PF_Rd0___write__PFRd0_Rd0PCcUl___fmt__PFi_Rd0PCc__FRd0_Rd0__1(((_Bool (*)(void *__anonymous_object1853))__sepPrt__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1854))__sepReset__F_R9sofstream__1), ((void (*)(void *__anonymous_object1855, _Bool __anonymous_object1856))__sepReset__F_R9sofstreamb__1), ((const char *(*)(void *__anonymous_object1857))__sepGetCur__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1858, const char *__anonymous_object1859))__sepSetCur__F_R9sofstreamPCc__1), ((_Bool (*)(void *__anonymous_object1860))__getNL__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1861, _Bool __anonymous_object1862))__setNL__F_R9sofstreamb__1), ((void (*)(void *__anonymous_object1863))__sepOn__F_R9sofstream__1), ((void (*)(void *__anonymous_object1864))__sepOff__F_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1865))__sepDisable__Fb_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1866))__sepEnable__Fb_R9sofstream__1), ((const char *(*)(void *__anonymous_object1867))__sepGet__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1868, const char *__anonymous_object1869))__sepSet__F_R9sofstreamPCc__1), ((const char *(*)(void *__anonymous_object1870))__sepGetTuple__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1871, const char *__anonymous_object1872))__sepSetTuple__F_R9sofstreamPCc__1), ((signed int (*)(void *__anonymous_object1873))__fail__Fi_R9sofstream__1), ((signed int (*)(void *__anonymous_object1874))__flush__Fi_R9sofstream__1), ((void (*)(void *__os__R7tostype_1, const char *__name__PCc_1, const char *__mode__PCc_1))__open__F_R9sofstreamPCcPCc__1), ((void (*)(void *__os__R7tostype_1))__close__F_R9sofstream__1), ((void *(*)(void *__anonymous_object1875, const char *__anonymous_object1876, unsigned long int __anonymous_object1877))__write__FR9sofstream_R9sofstreamPCcUl__1), ((signed int (*)(void *__anonymous_object1878, const char *__fmt__PCc_1, ...))__fmt__Fi_R9sofstreamPCc__1), ((void *)_p0));
     580    }
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    512582}
    513583void __f__F_Ui__1(unsigned int __v__Ui_1){
     
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    519     }
    520     ((void)(((void)(_tmp_cp_ret19=((struct ofstream *)___operator_bitor__A0_1_0_0___sepPrt__PFb_Rd0___sepReset__PF_Rd0___sepReset__PF_Rd0b___sepGetCur__PFPCc_Rd0___sepSetCur__PF_Rd0PCc___getNL__PFb_Rd0___setNL__PF_Rd0b___sepOn__PF_Rd0___sepOff__PF_Rd0___sepDisable__PFb_Rd0___sepEnable__PFb_Rd0___sepGet__PFPCc_Rd0___sepSet__PF_Rd0PCc___sepGetTuple__PFPCc_Rd0___sepSetTuple__PF_Rd0PCc___fail__PFi_Rd0___flush__PFi_Rd0___open__PF_Rd0PCcPCc___close__PF_Rd0___write__PFRd0_Rd0PCcUl___fmt__PFi_Rd0PCc__FRd0_Rd0PFRd0_Rd0___1(((_Bool (*)(void *__anonymous_object1930))__sepPrt__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1931))__sepReset__F_R9sofstream__1), ((void (*)(void *__anonymous_object1932, _Bool __anonymous_object1933))__sepReset__F_R9sofstreamb__1), ((const char *(*)(void *__anonymous_object1934))__sepGetCur__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1935, const char *__anonymous_object1936))__sepSetCur__F_R9sofstreamPCc__1), ((_Bool (*)(void 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*__mode__PCc_1))__open__F_R9sofstreamPCcPCc__1), ((void (*)(void *__os__R7tostype_1))__close__F_R9sofstream__1), ((void *(*)(void *__anonymous_object2004, const char *__anonymous_object2005, unsigned long int __anonymous_object2006))__write__FR9sofstream_R9sofstreamPCcUl__1), ((signed int (*)(void *__anonymous_object2007, const char *__fmt__PCc_1, ...))__fmt__Fi_R9sofstreamPCc__1), ((void *)__sout__R9sofstream_1), "size_t")))) , _tmp_cp_ret17)), __v__Ui_1)))) , _tmp_cp_ret18)), ((void *(*)(void *__anonymous_object2008))(&_thunk5)))))) , _tmp_cp_ret19));
     588        return __endl__A0_1_0_0___sepPrt__PFb_Rd0___sepReset__PF_Rd0___sepReset__PF_Rd0b___sepGetCur__PFPCc_Rd0___sepSetCur__PF_Rd0PCc___getNL__PFb_Rd0___setNL__PF_Rd0b___sepOn__PF_Rd0___sepOff__PF_Rd0___sepDisable__PFb_Rd0___sepEnable__PFb_Rd0___sepGet__PFPCc_Rd0___sepSet__PF_Rd0PCc___sepGetTuple__PFPCc_Rd0___sepSetTuple__PF_Rd0PCc___fail__PFi_Rd0___flush__PFi_Rd0___open__PF_Rd0PCcPCc___close__PF_Rd0___write__PFRd0_Rd0PCcUl___fmt__PFi_Rd0PCc__FRd0_Rd0__1(((_Bool (*)(void *__anonymous_object1958))__sepPrt__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1959))__sepReset__F_R9sofstream__1), ((void (*)(void *__anonymous_object1960, _Bool __anonymous_object1961))__sepReset__F_R9sofstreamb__1), ((const char *(*)(void *__anonymous_object1962))__sepGetCur__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1963, const char *__anonymous_object1964))__sepSetCur__F_R9sofstreamPCc__1), ((_Bool (*)(void *__anonymous_object1965))__getNL__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1966, _Bool __anonymous_object1967))__setNL__F_R9sofstreamb__1), ((void (*)(void *__anonymous_object1968))__sepOn__F_R9sofstream__1), ((void (*)(void *__anonymous_object1969))__sepOff__F_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1970))__sepDisable__Fb_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1971))__sepEnable__Fb_R9sofstream__1), ((const char *(*)(void *__anonymous_object1972))__sepGet__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1973, const char *__anonymous_object1974))__sepSet__F_R9sofstreamPCc__1), ((const char *(*)(void *__anonymous_object1975))__sepGetTuple__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1976, const char *__anonymous_object1977))__sepSetTuple__F_R9sofstreamPCc__1), ((signed int (*)(void *__anonymous_object1978))__fail__Fi_R9sofstream__1), ((signed int (*)(void *__anonymous_object1979))__flush__Fi_R9sofstream__1), ((void (*)(void *__os__R7tostype_1, const char *__name__PCc_1, const char *__mode__PCc_1))__open__F_R9sofstreamPCcPCc__1), ((void (*)(void *__os__R7tostype_1))__close__F_R9sofstream__1), ((void *(*)(void *__anonymous_object1980, const char *__anonymous_object1981, unsigned long int __anonymous_object1982))__write__FR9sofstream_R9sofstreamPCcUl__1), ((signed int (*)(void *__anonymous_object1983, const char *__fmt__PCc_1, ...))__fmt__Fi_R9sofstreamPCc__1), ((void *)_p0));
     589    }
     590    ((void)(((void)(_tmp_cp_ret19=((struct ofstream *)___operator_bitor__A0_1_0_0___sepPrt__PFb_Rd0___sepReset__PF_Rd0___sepReset__PF_Rd0b___sepGetCur__PFPCc_Rd0___sepSetCur__PF_Rd0PCc___getNL__PFb_Rd0___setNL__PF_Rd0b___sepOn__PF_Rd0___sepOff__PF_Rd0___sepDisable__PFb_Rd0___sepEnable__PFb_Rd0___sepGet__PFPCc_Rd0___sepSet__PF_Rd0PCc___sepGetTuple__PFPCc_Rd0___sepSetTuple__PF_Rd0PCc___fail__PFi_Rd0___flush__PFi_Rd0___open__PF_Rd0PCcPCc___close__PF_Rd0___write__PFRd0_Rd0PCcUl___fmt__PFi_Rd0PCc__FRd0_Rd0PFRd0_Rd0___1(((_Bool (*)(void *__anonymous_object1984))__sepPrt__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1985))__sepReset__F_R9sofstream__1), ((void (*)(void *__anonymous_object1986, _Bool __anonymous_object1987))__sepReset__F_R9sofstreamb__1), ((const char *(*)(void *__anonymous_object1988))__sepGetCur__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1989, const char *__anonymous_object1990))__sepSetCur__F_R9sofstreamPCc__1), ((_Bool (*)(void *__anonymous_object1991))__getNL__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object1992, _Bool __anonymous_object1993))__setNL__F_R9sofstreamb__1), ((void (*)(void *__anonymous_object1994))__sepOn__F_R9sofstream__1), ((void (*)(void *__anonymous_object1995))__sepOff__F_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1996))__sepDisable__Fb_R9sofstream__1), ((_Bool (*)(void *__anonymous_object1997))__sepEnable__Fb_R9sofstream__1), ((const char *(*)(void *__anonymous_object1998))__sepGet__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object1999, const char *__anonymous_object2000))__sepSet__F_R9sofstreamPCc__1), ((const char *(*)(void *__anonymous_object2001))__sepGetTuple__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object2002, const char *__anonymous_object2003))__sepSetTuple__F_R9sofstreamPCc__1), ((signed int (*)(void *__anonymous_object2004))__fail__Fi_R9sofstream__1), ((signed int (*)(void *__anonymous_object2005))__flush__Fi_R9sofstream__1), ((void (*)(void *__os__R7tostype_1, const char *__name__PCc_1, const char *__mode__PCc_1))__open__F_R9sofstreamPCcPCc__1), ((void (*)(void *__os__R7tostype_1))__close__F_R9sofstream__1), ((void *(*)(void *__anonymous_object2006, const char *__anonymous_object2007, unsigned long int __anonymous_object2008))__write__FR9sofstream_R9sofstreamPCcUl__1), ((signed int (*)(void *__anonymous_object2009, const char *__fmt__PCc_1, ...))__fmt__Fi_R9sofstreamPCc__1), ((void *)(((void)(_tmp_cp_ret18=((struct ofstream *)___operator_bitor__A0_1_0_0___sepPrt__PFb_Rd0___sepReset__PF_Rd0___sepReset__PF_Rd0b___sepGetCur__PFPCc_Rd0___sepSetCur__PF_Rd0PCc___getNL__PFb_Rd0___setNL__PF_Rd0b___sepOn__PF_Rd0___sepOff__PF_Rd0___sepDisable__PFb_Rd0___sepEnable__PFb_Rd0___sepGet__PFPCc_Rd0___sepSet__PF_Rd0PCc___sepGetTuple__PFPCc_Rd0___sepSetTuple__PF_Rd0PCc___fail__PFi_Rd0___flush__PFi_Rd0___open__PF_Rd0PCcPCc___close__PF_Rd0___write__PFRd0_Rd0PCcUl___fmt__PFi_Rd0PCc__FRd0_Rd0Ui__1(((_Bool (*)(void *__anonymous_object2010))__sepPrt__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object2011))__sepReset__F_R9sofstream__1), ((void (*)(void *__anonymous_object2012, _Bool __anonymous_object2013))__sepReset__F_R9sofstreamb__1), ((const char *(*)(void *__anonymous_object2014))__sepGetCur__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object2015, const char *__anonymous_object2016))__sepSetCur__F_R9sofstreamPCc__1), ((_Bool (*)(void *__anonymous_object2017))__getNL__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object2018, _Bool __anonymous_object2019))__setNL__F_R9sofstreamb__1), ((void (*)(void *__anonymous_object2020))__sepOn__F_R9sofstream__1), ((void (*)(void *__anonymous_object2021))__sepOff__F_R9sofstream__1), ((_Bool (*)(void *__anonymous_object2022))__sepDisable__Fb_R9sofstream__1), ((_Bool (*)(void *__anonymous_object2023))__sepEnable__Fb_R9sofstream__1), ((const char *(*)(void *__anonymous_object2024))__sepGet__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object2025, const char *__anonymous_object2026))__sepSet__F_R9sofstreamPCc__1), ((const char *(*)(void *__anonymous_object2027))__sepGetTuple__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object2028, const char *__anonymous_object2029))__sepSetTuple__F_R9sofstreamPCc__1), ((signed int (*)(void *__anonymous_object2030))__fail__Fi_R9sofstream__1), ((signed int (*)(void *__anonymous_object2031))__flush__Fi_R9sofstream__1), ((void (*)(void *__os__R7tostype_1, const char *__name__PCc_1, const char *__mode__PCc_1))__open__F_R9sofstreamPCcPCc__1), ((void (*)(void *__os__R7tostype_1))__close__F_R9sofstream__1), ((void *(*)(void *__anonymous_object2032, const char *__anonymous_object2033, unsigned long int __anonymous_object2034))__write__FR9sofstream_R9sofstreamPCcUl__1), ((signed int (*)(void *__anonymous_object2035, const char *__fmt__PCc_1, ...))__fmt__Fi_R9sofstreamPCc__1), ((void *)(((void)(_tmp_cp_ret17=((struct ofstream *)___operator_bitor__A0_1_0_0___sepPrt__PFb_Rd0___sepReset__PF_Rd0___sepReset__PF_Rd0b___sepGetCur__PFPCc_Rd0___sepSetCur__PF_Rd0PCc___getNL__PFb_Rd0___setNL__PF_Rd0b___sepOn__PF_Rd0___sepOff__PF_Rd0___sepDisable__PFb_Rd0___sepEnable__PFb_Rd0___sepGet__PFPCc_Rd0___sepSet__PF_Rd0PCc___sepGetTuple__PFPCc_Rd0___sepSetTuple__PF_Rd0PCc___fail__PFi_Rd0___flush__PFi_Rd0___open__PF_Rd0PCcPCc___close__PF_Rd0___write__PFRd0_Rd0PCcUl___fmt__PFi_Rd0PCc__FRd0_Rd0PCc__1(((_Bool (*)(void *__anonymous_object2036))__sepPrt__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object2037))__sepReset__F_R9sofstream__1), ((void (*)(void *__anonymous_object2038, _Bool __anonymous_object2039))__sepReset__F_R9sofstreamb__1), ((const char *(*)(void *__anonymous_object2040))__sepGetCur__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object2041, const char *__anonymous_object2042))__sepSetCur__F_R9sofstreamPCc__1), ((_Bool (*)(void *__anonymous_object2043))__getNL__Fb_R9sofstream__1), ((void (*)(void *__anonymous_object2044, _Bool __anonymous_object2045))__setNL__F_R9sofstreamb__1), ((void (*)(void *__anonymous_object2046))__sepOn__F_R9sofstream__1), ((void (*)(void *__anonymous_object2047))__sepOff__F_R9sofstream__1), ((_Bool (*)(void *__anonymous_object2048))__sepDisable__Fb_R9sofstream__1), ((_Bool (*)(void *__anonymous_object2049))__sepEnable__Fb_R9sofstream__1), ((const char *(*)(void *__anonymous_object2050))__sepGet__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object2051, const char *__anonymous_object2052))__sepSet__F_R9sofstreamPCc__1), ((const char *(*)(void *__anonymous_object2053))__sepGetTuple__FPCc_R9sofstream__1), ((void (*)(void *__anonymous_object2054, const char *__anonymous_object2055))__sepSetTuple__F_R9sofstreamPCc__1), ((signed int (*)(void *__anonymous_object2056))__fail__Fi_R9sofstream__1), ((signed int (*)(void *__anonymous_object2057))__flush__Fi_R9sofstream__1), ((void (*)(void *__os__R7tostype_1, const char *__name__PCc_1, const char *__mode__PCc_1))__open__F_R9sofstreamPCcPCc__1), ((void (*)(void *__os__R7tostype_1))__close__F_R9sofstream__1), ((void *(*)(void *__anonymous_object2058, const char *__anonymous_object2059, unsigned long int __anonymous_object2060))__write__FR9sofstream_R9sofstreamPCcUl__1), ((signed int (*)(void *__anonymous_object2061, const char *__fmt__PCc_1, ...))__fmt__Fi_R9sofstreamPCc__1), ((void *)__sout__R9sofstream_1), "size_t")))) , _tmp_cp_ret17)), __v__Ui_1)))) , _tmp_cp_ret18)), ((void *(*)(void *__anonymous_object2062))(&_thunk5)))))) , _tmp_cp_ret19));
    521591}
    522592signed int __main__Fi___1(){
  • src/tests/.expect/references.txt

    rb2fe1c9 r32cab5b  
    4413 1 12
    5514 14
     6x = 6 ; x2 = 789
     7x = 6 ; x2 = 999
     8x = 12345 ; x2 = 999
     9x = 22222 ; x2 = 999
    610Default constructing a Y
    711Copy constructing a Y
     
    2832Destructing a Y
    2933Destructing a Y
     343 3
     353
     363
     373 9 { 1, 7 }, [1, 2, 3]
    3038Destructing a Y
    3139Destructing a Y
  • src/tests/Makefile.am

    rb2fe1c9 r32cab5b  
    110110        ${CC} ${AM_CFLAGS} ${CFLAGS} -DERR1 ${<} -o ${@}
    111111
     112fallthrough-ERROR: fallthrough.c @CFA_BINDIR@/@CFA_NAME@
     113        ${CC} ${AM_CFLAGS} ${CFLAGS} -DERR1 ${<} -o ${@}
     114
    112115# Constructor/destructor tests
    113116raii/dtor-early-exit-ERR1: raii/dtor-early-exit.c @CFA_BINDIR@/@CFA_NAME@
  • src/tests/Makefile.in

    rb2fe1c9 r32cab5b  
    787787        ${CC} ${AM_CFLAGS} ${CFLAGS} -DERR1 ${<} -o ${@}
    788788
     789fallthrough-ERROR: fallthrough.c @CFA_BINDIR@/@CFA_NAME@
     790        ${CC} ${AM_CFLAGS} ${CFLAGS} -DERR1 ${<} -o ${@}
     791
    789792# Constructor/destructor tests
    790793raii/dtor-early-exit-ERR1: raii/dtor-early-exit.c @CFA_BINDIR@/@CFA_NAME@
  • src/tests/concurrent/examples/datingService.c

    rb2fe1c9 r32cab5b  
    88// Created On       : Mon Oct 30 12:56:20 2017
    99// Last Modified By : Peter A. Buhr
    10 // Last Modified On : Tue Jan  2 12:19:01 2018
    11 // Update Count     : 22
     10// Last Modified On : Wed Mar 14 22:48:40 2018
     11// Update Count     : 23
    1212//
    1313
     
    8888int main() {
    8989        DatingService TheExchange;
    90         Girl *girls[NoOfPairs];
    91         Boy  *boys[NoOfPairs];
     90        Girl * girls[NoOfPairs];
     91        Boy  * boys[NoOfPairs];
    9292
    9393        srandom( /*getpid()*/ 103 );
  • src/tests/concurrent/preempt.c

    rb2fe1c9 r32cab5b  
    11#include <kernel>
    22#include <thread>
     3#include <time>
    34
    45#ifndef PREEMPTION_RATE
    5 #define PREEMPTION_RATE 10_000ul
     6#define PREEMPTION_RATE 10`ms
    67#endif
    78
    8 unsigned int default_preemption() {
     9Duration default_preemption() {
    910        return PREEMPTION_RATE;
    1011}
  • src/tests/concurrent/signal/barge.c

    rb2fe1c9 r32cab5b  
    1616
    1717#ifndef PREEMPTION_RATE
    18 #define PREEMPTION_RATE 10_000ul
     18#define PREEMPTION_RATE 10`ms
    1919#endif
    2020
    21 unsigned int default_preemption() {
     21Duration default_preemption() {
    2222        return 0;
    2323}
  • src/tests/concurrent/signal/block.c

    rb2fe1c9 r32cab5b  
    1212#include <stdlib>
    1313#include <thread>
    14 
    15 #include <time.h>
     14#include <time>
    1615
    1716#ifdef LONG_TEST
     
    2221
    2322#ifndef PREEMPTION_RATE
    24 #define PREEMPTION_RATE 10_000ul
     23#define PREEMPTION_RATE 10`ms
    2524#endif
    2625
    27 unsigned int default_preemption() {
     26Duration default_preemption() {
    2827        return PREEMPTION_RATE;
    2928}
     
    5150//------------------------------------------------------------------------------
    5251void wait_op( global_data_t & mutex a, global_data_t & mutex b, unsigned i ) {
    53         wait( cond, (uintptr_t)this_thread );
     52    wait( cond, (uintptr_t)active_thread() );
    5453
    5554        yield( random( 10 ) );
     
    6059        }
    6160
    62         a.last_thread = b.last_thread = this_thread;
     61        a.last_thread = b.last_thread = active_thread();
    6362
    6463        yield( random( 10 ) );
     
    7675        yield( random( 10 ) );
    7776
    78         [a.last_thread, b.last_thread, a.last_signaller, b.last_signaller] = this_thread;
     77        [a.last_thread, b.last_thread, a.last_signaller, b.last_signaller] = active_thread();
    7978
    8079        if( !is_empty( cond ) ) {
     
    106105//------------------------------------------------------------------------------
    107106void barge_op( global_data_t & mutex a ) {
    108         a.last_thread = this_thread;
     107        a.last_thread = active_thread();
    109108}
    110109
  • src/tests/concurrent/signal/disjoint.c

    rb2fe1c9 r32cab5b  
    33#include <monitor>
    44#include <thread>
    5 
    6 #include <time.h>
     5#include <time>
    76
    87#ifdef LONG_TEST
     
    1312
    1413#ifndef PREEMPTION_RATE
    15 #define PREEMPTION_RATE 10_000ul
     14#define PREEMPTION_RATE 10`ms
    1615#endif
    1716
    18 unsigned int default_preemption() {
     17Duration default_preemption() {
    1918        return PREEMPTION_RATE;
    2019}
  • src/tests/concurrent/signal/wait.c

    rb2fe1c9 r32cab5b  
    1010#include <stdlib>
    1111#include <thread>
    12 
    13 #include <time.h>
     12#include <time>
    1413
    1514#ifdef LONG_TEST
     
    2019
    2120#ifndef PREEMPTION_RATE
    22 #define PREEMPTION_RATE 10_000ul
     21#define PREEMPTION_RATE 10`ms
    2322#endif
    2423
    25 unsigned int default_preemption() {
     24Duration default_preemption() {
    2625        return PREEMPTION_RATE;
    2726}
  • src/tests/concurrent/waitfor/simple.c

    rb2fe1c9 r32cab5b  
    1010
    1111#ifndef PREEMPTION_RATE
    12 #define PREEMPTION_RATE 10_000ul
     12#define PREEMPTION_RATE 10`ms
    1313#endif
    1414
    15 unsigned int default_preemption() {
     15Duration default_preemption() {
    1616        return PREEMPTION_RATE;
    1717}
  • src/tests/coroutine/fibonacci.c

    rb2fe1c9 r32cab5b  
    1010// Created On       : Thu Jun  8 07:29:37 2017
    1111// Last Modified By : Peter A. Buhr
    12 // Last Modified On : Tue Dec  5 22:27:54 2017
    13 // Update Count     : 14
     12// Last Modified On : Thu Mar 22 22:45:44 2018
     13// Update Count     : 15
    1414//
    1515
     
    2121void ?{}( Fibonacci & fib ) with( fib ) { fn = 0; }
    2222
     23// main automatically called on first resume
    2324void main( Fibonacci & fib ) with( fib ) {
    2425        int fn1, fn2;                                                                           // retained between resumes
    25 
    26         fn = 0; fn1 = fn;                                                                       // 1st case
     26        fn = 0;  fn1 = fn;                                                                      // 1st case
    2727        suspend();                                                                                      // restart last resume
    28 
    29         fn = 1; fn2 = fn1;  fn1 = fn;                                           // 2nd case
     28        fn = 1;  fn2 = fn1;  fn1 = fn;                                          // 2nd case
    3029        suspend();                                                                                      // restart last resume
    31 
    3230        for ( ;; ) {
    3331                fn = fn1 + fn2; fn2 = fn1;  fn1 = fn;                   // general case
  • src/tests/minmax.c

    rb2fe1c9 r32cab5b  
    77// minmax.c --
    88//
    9 // Author           : Richard C. Bilson
     9// Author           : Peter A. Buhr
    1010// Created On       : Wed May 27 17:56:53 2015
    1111// Last Modified By : Peter A. Buhr
    12 // Last Modified On : Mon Feb 29 23:45:16 2016
    13 // Update Count     : 49
     12// Last Modified On : Tue Apr 10 17:29:09 2018
     13// Update Count     : 50
    1414//
    1515
  • src/tests/operators.c

    rb2fe1c9 r32cab5b  
    2727        a(b);
    2828        a + b;
    29         struct accumulator ?+?; // why not, eh?
    30         a + b;
    3129}
    3230
  • src/tests/preempt_longrun/create.c

    rb2fe1c9 r32cab5b  
    55
    66#ifndef PREEMPTION_RATE
    7 #define PREEMPTION_RATE 10_000ul
     7#define PREEMPTION_RATE 10`ms
    88#endif
    99
    10 unsigned int default_preemption() {
     10Duration default_preemption() {
    1111        return PREEMPTION_RATE;
    1212}
  • src/tests/preempt_longrun/enter.c

    rb2fe1c9 r32cab5b  
    66
    77#ifndef PREEMPTION_RATE
    8 #define PREEMPTION_RATE 10_000ul
     8#define PREEMPTION_RATE 10`ms
    99#endif
    1010
    11 unsigned int default_preemption() {
     11Duration default_preemption() {
    1212        return PREEMPTION_RATE;
    1313}
  • src/tests/preempt_longrun/enter3.c

    rb2fe1c9 r32cab5b  
    66
    77#ifndef PREEMPTION_RATE
    8 #define PREEMPTION_RATE 10_000ul
     8#define PREEMPTION_RATE 10`ms
    99#endif
    1010
    11 unsigned int default_preemption() {
     11Duration default_preemption() {
    1212        return PREEMPTION_RATE;
    1313}
  • src/tests/preempt_longrun/processor.c

    rb2fe1c9 r32cab5b  
    55
    66#ifndef PREEMPTION_RATE
    7 #define PREEMPTION_RATE 10_000ul
     7#define PREEMPTION_RATE 10`ms
    88#endif
    99
    10 unsigned int default_preemption() {
     10Duration default_preemption() {
    1111        return PREEMPTION_RATE;
    1212}
  • src/tests/preempt_longrun/stack.c

    rb2fe1c9 r32cab5b  
    55
    66#ifndef PREEMPTION_RATE
    7 #define PREEMPTION_RATE 10_000ul
     7#define PREEMPTION_RATE 10`ms
    88#endif
    99
    10 unsigned int default_preemption() {
     10Duration default_preemption() {
    1111        return PREEMPTION_RATE;
    1212}
  • src/tests/preempt_longrun/yield.c

    rb2fe1c9 r32cab5b  
    99
    1010#ifndef PREEMPTION_RATE
    11 #define PREEMPTION_RATE 10_000ul
     11#define PREEMPTION_RATE 10`ms
    1212#endif
    1313
    14 unsigned int default_preemption() {
     14Duration default_preemption() {
    1515        return PREEMPTION_RATE;
    1616}
  • src/tests/references.c

    rb2fe1c9 r32cab5b  
    4646
    4747int main() {
    48         int x = 123456, *p1 = &x, **p2 = &p1, ***p3 = &p2,
     48        int x = 123456, x2 = 789, *p1 = &x, **p2 = &p1, ***p3 = &p2,
    4949                &r1 = x,    &&r2 = r1,   &&&r3 = r2;
    5050        ***p3 = 3;                          // change x
     
    5252        *p3 = &p1;                          // change p2
    5353        int y = 0, z = 11, & ar[3] = { x, y, z };    // initialize array of references
     54        // &ar[1] = &z;                        // change reference array element
     55        // typeof( ar[1] ) p;                  // is int, i.e., the type of referenced object
     56        // typeof( &ar[1] ) q;                 // is int &, i.e., the type of reference
     57        // sizeof( ar[1] ) == sizeof( int );   // is true, i.e., the size of referenced object
     58        // sizeof( &ar[1] ) == sizeof( int *); // is true, i.e., the size of a reference
    5459
     60        ((int*&)&r3) = &x;                  // change r1, (&*)**r3
     61        x = 3;
    5562        // test that basic reference properties are true - r1 should be an alias for x
    5663        printf("%d %d %d\n", x, r1, &x == &r1);
     
    6875        printf("%d %d\n", r1, x);
    6976
     77        ((int&)r3) = 6;                       // change x, ***r3
     78        printf("x = %d ; x2 = %d\n", x, x2);  // check that x was changed
     79        ((int*&)&r3) = &x2;                   // change r1 to refer to x2, (&*)**r3
     80        ((int&)r3) = 999;                     // modify x2
     81        printf("x = %d ; x2 = %d\n", x, x2);  // check that x2 was changed
     82        ((int**&)&&r3) = p2;                  // change r2, (&(&*)*)*r3
     83        ((int&)r3) = 12345;                   // modify x
     84        printf("x = %d ; x2 = %d\n", x, x2);  // check that x was changed
     85        ((int***&)&&&r3) = p3;                // change r3 to p3, (&(&(&*)*)*)r3
     86        ((int&)r3) = 22222;                   // modify x
     87        printf("x = %d ; x2 = %d\n", x, x2);  // check that x was changed
     88
    7089        // test that reference members are not implicitly constructed/destructed/assigned
    7190        X x1, x2 = x1;
     
    7695        &z1.r = &z1r;
    7796        &z2.r = &z2r;
     97
    7898        z1 = z2;
     99
     100        // test rvalue-to-reference conversion
     101        {
     102                struct S { double x, y; };
     103                void f( int & i, int & j, S & s, int v[] ) {
     104                        printf("%d %d { %g, %g }, [%d, %d, %d]\n", i, j, s.[x, y], v[0], v[1], v[2]);
     105                }
     106                void g(int & i) { printf("%d\n", i); }
     107                void h(int &&& i) { printf("%d\n", i); }
     108
     109                int &&& r = 3;  // rvalue to reference
     110                int i = r;
     111                printf("%d %d\n", i, r);  // both 3
     112
     113                g( 3 );          // rvalue to reference
     114                h( (int &&&)3 ); // rvalue to reference
     115
     116                int a = 5, b = 4;
     117                f( 3, a + b, (S){ 1.0, 7.0 }, (int [3]){ 1, 2, 3 } ); // two rvalue to reference
     118        }
    79119}
    80120
  • src/tests/switch.c

    rb2fe1c9 r32cab5b  
    1010// Created On       : Tue Jul 12 06:50:22 2016
    1111// Last Modified By : Peter A. Buhr
    12 // Last Modified On : Sat Aug 26 10:14:21 2017
    13 // Update Count     : 33
     12// Last Modified On : Thu Mar  8 07:33:05 2018
     13// Update Count     : 36
    1414//
    1515
     
    8787                S s;
    8888          case 19:
    89           case 'A' ... 'Z':
    90           case 0 ... 6:
     89          case 'A'...'Z':
     90          case 0 ...6:                                                                          // space required, or lexed as decimal point
    9191          case 20, 30, 40:
    9292                i = 3;
     
    9696          case 8~10:
    9797                f( 3 );
    98                 fallthru
     98                fallthru;
    9999          case 'd':
    100100                j = 5;
  • tools/prettyprinter/Makefile.am

    rb2fe1c9 r32cab5b  
    1111## Created On       : Wed Jun 28 12:07:10 2017
    1212## Last Modified By : Peter A. Buhr
    13 ## Last Modified On : Wed Jun 28 23:11:56 2017
    14 ## Update Count     : 15
     13## Last Modified On : Mon Apr 16 09:43:23 2018
     14## Update Count     : 20
    1515###############################################################################
    1616
  • tools/prettyprinter/lex.ll

    rb2fe1c9 r32cab5b  
    1010 * Created On       : Sat Dec 15 11:45:59 2001
    1111 * Last Modified By : Peter A. Buhr
    12  * Last Modified On : Tue Aug 29 17:33:36 2017
    13  * Update Count     : 268
     12 * Last Modified On : Sun Apr 15 21:28:33 2018
     13 * Update Count     : 271
    1414 */
    1515
     
    5050<INITIAL,C_CODE>"/*" {                                                                  // C style comments */
    5151#if defined(DEBUG_ALL) | defined(DEBUG_COMMENT)
    52     cerr << "\"/*\" : " << yytext << endl;
     52                cerr << "\"/*\" : " << yytext << endl;
    5353#endif
    54     if ( YYSTATE == C_CODE ) code_str += yytext;
    55     else comment_str += yytext;
    56     yy_push_state(C_COMMENT);
     54                if ( YYSTATE == C_CODE ) code_str += yytext;
     55                else comment_str += yytext;
     56                yy_push_state(C_COMMENT);
    5757}
    5858<C_COMMENT>(.|"\n")     {                                                                       // C style comments
    5959#if defined(DEBUG_ALL) | defined(DEBUG_COMMENT)
    60     cerr << "<C_COMMENT>(.|\\n) : " << yytext << endl;
     60                cerr << "<C_COMMENT>(.|\\n) : " << yytext << endl;
    6161#endif
    62     if ( yy_top_state() == C_CODE ) code_str += yytext;
    63     else comment_str += yytext;
     62                if ( yy_top_state() == C_CODE ) code_str += yytext;
     63                else comment_str += yytext;
    6464}
    6565<C_COMMENT>"*/" {                                                                               // C style comments
     
    123123<C_CODE>"%}"    { RETURN_TOKEN( RCURL ) }
    124124
    125 ^"%union"       { RETURN_TOKEN( UNION ) }
    126 ^"%start"       { RETURN_TOKEN( START ) }
    127 ^"%token"       { RETURN_TOKEN( TOKEN ) }
    128 ^"%type"            { RETURN_TOKEN( TYPE ) }
    129 ^"%left"            { RETURN_TOKEN( LEFT ) }
    130 ^"%right"           { RETURN_TOKEN( RIGHT ) }
    131 ^"%nonassoc"    { RETURN_TOKEN( NONASSOC ) }
    132 ^"%precedence"  { RETURN_TOKEN( PRECEDENCE ) }
     125^"%define"[^\n]*"\n" { RETURN_TOKEN( DEFINE ) }
     126^"%expect"              { RETURN_TOKEN( EXPECT ) }
     127^"%left"                { RETURN_TOKEN( LEFT ) }
     128^"%locations"   { RETURN_TOKEN( LOCATIONS ) }
     129^"%nonassoc"    { RETURN_TOKEN( NONASSOC ) }
     130^"%precedence"  { RETURN_TOKEN( PRECEDENCE ) }
    133131^"%pure_parser" { RETURN_TOKEN( PURE_PARSER ) }
     132^"%right"               { RETURN_TOKEN( RIGHT ) }
    134133^"%semantic_parser"     { RETURN_TOKEN( SEMANTIC_PARSER ) }
    135 ^"%expect"      { RETURN_TOKEN( EXPECT ) }
    136 ^"%thong"               { RETURN_TOKEN( THONG ) }
     134^"%start"               { RETURN_TOKEN( START ) }
     135^"%thong"               { RETURN_TOKEN( THONG ) }
     136^"%token"               { RETURN_TOKEN( TOKEN ) }
     137^"%type"                { RETURN_TOKEN( TYPE ) }
     138^"%union"               { RETURN_TOKEN( UNION ) }
    137139
    138 "%prec"                 { RETURN_TOKEN( PREC ) }
     140"%prec"                 { RETURN_TOKEN( PREC ) }
    139141
    140 {integer}           { RETURN_TOKEN( INTEGER ); }
    141 [']{c_char}[']  { RETURN_TOKEN( CHARACTER ); }
    142 {identifier}    { RETURN_TOKEN( IDENTIFIER ); }
     142{integer}               { RETURN_TOKEN( INTEGER ); }
     143[']{c_char}[']  { RETURN_TOKEN( CHARACTER ); }
     144{identifier}    { RETURN_TOKEN( IDENTIFIER ); }
    143145
    144146<C_CODE>["]{s_char}*["] {                                                               // hide braces "{}" in strings
     
    160162%%
    161163void lexC(void) {
    162     BEGIN(C_CODE);
     164        BEGIN(C_CODE);
    163165}
    164166
    165167string lexYacc(void) {
    166     BEGIN(INITIAL);
    167     //cerr << "CODE: " << endl << code_str << endl;
    168     string temp( code_str );
    169     code_str = "";
    170     return temp;
     168        BEGIN(INITIAL);
     169        //cerr << "CODE: " << endl << code_str << endl;
     170        string temp( code_str );
     171        code_str = "";
     172        return temp;
    171173}
    172174
  • tools/prettyprinter/parser.yy

    rb2fe1c9 r32cab5b  
    1010// Created On       : Sat Dec 15 13:44:21 2001
    1111// Last Modified By : Peter A. Buhr
    12 // Last Modified On : Tue Aug 29 16:34:10 2017
    13 // Update Count     : 1047
     12// Last Modified On : Sun Apr 15 21:40:30 2018
     13// Update Count     : 1052
    1414//
    1515
     
    6161%token<tokenp>  CODE                                                                    // C code
    6262
    63 %token<tokenp>  START                                                                   // %start
    64 %token<tokenp>  UNION                                                                   // %union
    65 %token<tokenp>  TOKEN                                                                   // %token
     63%token<tokenp>  DEFINE                                                                  // %define
     64%token<tokenp>  EXPECT                                                                  // %expect
    6665%token<tokenp>  LEFT                                                                    // %left
    67 %token<tokenp>  RIGHT                                                                   // %right
     66%token<tokenp>  LOCATIONS                                                               // %locations
    6867%token<tokenp>  NONASSOC                                                                // %nonassoc
    6968%token<tokenp>  PRECEDENCE                                                              // %precedence
     69%token<tokenp>  PURE_PARSER                                                             // %pure_parser
     70%token<tokenp>  RIGHT                                                                   // %right
     71%token<tokenp>  SEMANTIC_PARSER                                                 // %semantic_parser
     72%token<tokenp>  START                                                                   // %start
     73%token<tokenp>  THONG                                                                   // %thong
     74%token<tokenp>  TOKEN                                                                   // %token
    7075%token<tokenp>  TYPE                                                                    // %type
    71 %token<tokenp>  PURE_PARSER                                                             // %pure_parser
    72 %token<tokenp>  SEMANTIC_PARSER                                                 // %semantic_parser
    73 %token<tokenp>  EXPECT                                                                  // %expect
    74 %token<tokenp>  THONG                                                                   // %thong
     76%token<tokenp>  UNION                                                                   // %union
    7577
    7678%token<tokenp>  PREC                                                                    // %prec
    7779
    78 %token          END_TERMINALS                                                           // ALL TERMINAL TOKEN NAMES MUST APPEAR BEFORE THIS
     80%token                  END_TERMINALS                                                   // ALL TERMINAL TOKEN NAMES MUST APPEAR BEFORE THIS
    7981
    8082%type<tokenp>   sections
    81 %token          _SECTIONS
     83%token                  _SECTIONS
    8284%type<tokenp>   mark
    8385%type<tokenp>   defsection_opt
    84 %token          _DEFSECTION_OPT
     86%token                  _DEFSECTION_OPT
    8587%type<tokenp>   declarations
    8688%type<tokenp>   literalblock
    87 %token          _LITERALBLOCK
     89%token                  _LITERALBLOCK
    8890%type<tokenp>   declaration
    89 %token          _DECLARATION
     91%token                  _DECLARATION
    9092%type<tokenp>   union
    9193%type<tokenp>   rword
    9294%type<tokenp>   tag_opt
    93 %token          _TAG_OPT
     95%token                  _TAG_OPT
    9496%type<tokenp>   namenolist
    95 %token          _NAMENOLIST
     97%token                  _NAMENOLIST
    9698%type<tokenp>   nameno
    97 %token          _NAMENO
     99%token                  _NAMENO
    98100%type<tokenp>   namelist
    99 %token          _NAMELIST
     101%token                  _NAMELIST
    100102%type<tokenp>   name
    101103%type<tokenp>   rulesection
    102 %token          _RULESECTION
     104%token                  _RULESECTION
    103105%type<tokenp>   rules
    104 %token          _RULE
     106%token                  _RULE
    105107%type<tokenp>   lhs
    106 %token          _LHS
     108%token                  _LHS
    107109%type<tokenp>   rhs
    108 %token          _RHS
     110%token                  _RHS
    109111%type<tokenp>   prod
    110112%type<tokenp>   prec
    111 %token          _PREC
     113%token                  _PREC
    112114%type<tokenp>   action
    113 %token          _ACTION
     115%token                  _ACTION
    114116%type<tokenp>   usersection_opt
    115 %token          _USERSECTION_OPT
     117%token                  _USERSECTION_OPT
    116118%type<tokenp>   ccode_opt
    117119%type<tokenp>   blocks
     
    234236                    $$ = $1;
    235237                }
     238        | DEFINE                                                                                        // bison
     239        | LOCATIONS
    236240        | THONG                                                                                         // bison
    237241        ;
  • tools/prettyprinter/test.y

    rb2fe1c9 r32cab5b  
    66
    77/* adsad2 */
    8 
     8%locations
     9%define parse.error verbose
    910%%
    1011
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