Ignore:
Timestamp:
Dec 15, 2020, 12:51:15 PM (12 months ago)
Author:
Thierry Delisle <tdelisle@…>
Branches:
arm-eh, jacob/cs343-translation, master, new-ast-unique-expr
Children:
2dd0689, 54eb1bb3, 72a3aff
Parents:
90ecade
Message:

Some previous in progress work.
Commited only so it stops showing in my git status.

File:
1 edited

Legend:

Unmodified
Added
Removed
  • doc/theses/thierry_delisle_PhD/code/readQ_example/thrdlib/thread.cpp

    r90ecade r72b1800  
    1 #include "thread.hpp"
     1#if !defined(WITH_PTHREADS) && !defined(WITH_LIBFIBRE) && !defined(WITH_CFORALL)
     2#error must define WITH_PTHREADS, WITH_LIBFIBRE or WITH_CFORALL
     3#endif
    24
    3 #include <cstdarg>                                                                              // va_start, va_end
    4 #include <cstdio>
    5 #include <cstring>                                                                              // strlen
    6 extern "C" {
    7         #include <unistd.h>                                                                             // _exit, getpid
    8         #include <signal.h>
    9         #include <dlfcn.h>                                                                              // dlopen, dlsym
    10         #include <execinfo.h>                                                                   // backtrace, messages
    11 }
     5#ifdef WITH_PTHREADS
     6#include "pthread.hpp"
     7#endif
     8#ifdef WITH_LIBFIBRE
     9#include "fibre.hpp"
     10#endif
     11#ifdef WITH_CFORALL
     12#include "cforall.hpp"
     13#endif
    1214
    13 #include <iostream>
    14 #include <string>
     15namespace thrdlib {
     16        //--------------------
     17        // Basic thread support
     18        void * create( void (*main)( void * ) ) { return (thread_t)thrdlib_create(  (void (*)( thread_t )) main ); }
     19        void join  ( void * handle ) { thrdlib_join  ((thread_t)handle); }
     20        void park  ( void * handle ) { thrdlib_park  ((thread_t)handle); }
     21        void unpark( void * handle ) { thrdlib_unpark((thread_t)handle); }
     22        void yield( void )  { thrdlib_yield(); }
    1523
    16 using thrdlib::thread_t;
    17 
    18 thread_t (*thrdlib::create)( void (*main)( thread_t ) ) = nullptr;
    19 void (*thrdlib::join)( thread_t handle ) = nullptr;
    20 void (*thrdlib::park)( thread_t handle ) = nullptr;
    21 void (*thrdlib::unpark)( thread_t handle ) = nullptr;
    22 void (*thrdlib::yield)( void ) = nullptr;
    23 void (*lib_clean)(void) = nullptr;
    24 
    25 typedef void (*fptr_t)();
    26 static fptr_t open_symbol( void * library, const char * symbol, bool required ) {
    27         void * ptr = dlsym( library, symbol );
    28 
    29         const char * error = dlerror();
    30         if ( required && error ) {
    31                 std::cerr << "Fetching symbol '" << symbol << "' failed with error '" << error << "'\n";
    32                 std::abort();
    33         }
    34 
    35         return (fptr_t)ptr;
    36 }
    37 
    38 //--------------------
    39 // Basic kernel features
    40 void thrdlib::init( const char * name, int procs ) {
    41         std::string file = __FILE__;
    42         std::size_t found = file.find_last_of("/");
    43         std::string libname = file.substr(0,found+1) + name + ".so";
    44 
    45         std::cout << "Use framework " << name << "(" << libname << ")\n";
    46 
    47         void * library = dlopen( libname.c_str(), RTLD_NOW );
    48         if ( const char * error = dlerror() ) {
    49                 std::cerr << "Could not open library '" << libname << "' from name '" << name <<"'\n";
    50                 std::cerr << "Error was : '" << error << "'\n";
    51                 std::abort();
    52         }
    53 
    54         void (*lib_init)( int ) = (void (*)( int ))open_symbol( library, "thrdlib_init", false );
    55         lib_clean = open_symbol( library, "thrdlib_clean" , false );
    56 
    57         thrdlib::create = (typeof(thrdlib::create))open_symbol( library, "thrdlib_create", true  );
    58         thrdlib::join   = (typeof(thrdlib::join  ))open_symbol( library, "thrdlib_join"  , true  );
    59         thrdlib::park   = (typeof(thrdlib::park  ))open_symbol( library, "thrdlib_park"  , true  );
    60         thrdlib::unpark = (typeof(thrdlib::unpark))open_symbol( library, "thrdlib_unpark", true  );
    61         thrdlib::yield  = (typeof(thrdlib::yield ))open_symbol( library, "thrdlib_yield" , true  );
    62 
    63         lib_init( procs );
    64 }
    65 
    66 void thrdlib::clean( void ) {
    67         if(lib_clean) lib_clean();
    68 }
     24        //--------------------
     25        // Basic kernel features
     26        void init( int procs ) { thrdlib_init(procs); }
     27        void clean( void ) { thrdlib_clean(); }
     28};
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