source: src/libcfa/concurrency/invoke.h @ 39fea2f

aaron-thesisarm-ehcleanup-dtorsdeferred_resndemanglerjacob/cs343-translationjenkins-sandboxnew-astnew-ast-unique-exprnew-envno_listpersistent-indexerresolv-newwith_gc
Last change on this file since 39fea2f was 39fea2f, checked in by Thierry Delisle <tdelisle@…>, 4 years ago

Implemented proper support for full-coroutines. Stack unwinding still not done.

  • Property mode set to 100644
File size: 5.5 KB
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1//
2// Cforall Version 1.0.0 Copyright (C) 2016 University of Waterloo
3//
4// The contents of this file are covered under the licence agreement in the
5// file "LICENCE" distributed with Cforall.
6//
7// invoke.h --
8//
9// Author           : Thierry Delisle
10// Created On       : Tue Jan 17 12:27:26 2016
11// Last Modified By : Peter A. Buhr
12// Last Modified On : Fri Jul 21 22:28:56 2017
13// Update Count     : 1
14//
15
16#include <stdbool.h>
17#include <stdint.h>
18
19#ifdef __CFORALL__
20extern "C" {
21#endif
22
23#if ! defined(__CFA_INVOKE_PRIVATE__)
24#ifndef _INVOKE_H_
25#define _INVOKE_H_
26
27      #define unlikely(x)    __builtin_expect(!!(x), 0)
28      #define thread_local _Thread_local
29
30      typedef void (*fptr_t)();
31
32      struct spinlock {
33            volatile int lock;
34            #ifdef __CFA_DEBUG__
35                  const char * prev_name;
36                  void* prev_thrd;
37            #endif
38      };
39
40      struct __thread_queue_t {
41            struct thread_desc * head;
42            struct thread_desc ** tail;
43      };
44
45      struct __condition_stack_t {
46            struct __condition_criterion_t * top;
47      };
48
49      #ifdef __CFORALL__
50      extern "Cforall" {
51            void ?{}( struct __thread_queue_t & );
52            void append( struct __thread_queue_t *, struct thread_desc * );
53            struct thread_desc * pop_head( struct __thread_queue_t * );
54            struct thread_desc * remove( struct __thread_queue_t *, struct thread_desc ** );
55
56            void ?{}( struct __condition_stack_t & );
57            void push( struct __condition_stack_t *, struct __condition_criterion_t * );
58            struct __condition_criterion_t * pop( struct __condition_stack_t * );
59
60            void ?{}(spinlock & this);
61            void ^?{}(spinlock & this);
62      }
63      #endif
64
65      struct coStack_t {
66            unsigned int size;                        // size of stack
67            void *storage;                            // pointer to stack
68            void *limit;                              // stack grows towards stack limit
69            void *base;                               // base of stack
70            void *context;                            // address of cfa_context_t
71            void *top;                                // address of top of storage
72            bool userStack;                           // whether or not the user allocated the stack
73      };
74
75      enum coroutine_state { Halted, Start, Inactive, Active, Primed };
76
77      struct coroutine_desc {
78            struct coStack_t stack;                   // stack information of the coroutine
79            const char *name;                         // textual name for coroutine/task, initialized by uC++ generated code
80            int errno_;                               // copy of global UNIX variable errno
81            enum coroutine_state state;               // current execution status for coroutine
82            struct coroutine_desc * starter;          // first coroutine to resume this one
83            struct coroutine_desc * last;             // last coroutine to resume this one
84      };
85
86      struct monitor_desc {
87            struct spinlock lock;                     // spinlock to protect internal data
88            struct thread_desc * owner;               // current owner of the monitor
89            struct __thread_queue_t entry_queue;      // queue of threads that are blocked waiting for the monitor
90            struct __condition_stack_t signal_stack;  // stack of conditions to run next once we exit the monitor
91            unsigned int recursion;                   // monitor routines can be called recursively, we need to keep track of that
92
93            struct __acceptable_t * acceptables;      // list of acceptable functions, null if any
94            unsigned short acceptable_count;          // number of acceptable functions
95            short accepted_index;                     // the index of the accepted function, -1 if none
96       };
97
98      struct thread_desc {
99            // Core threading fields
100            struct coroutine_desc cor;                // coroutine body used to store context
101            struct monitor_desc mon;                  // monitor body used for mutual exclusion
102
103            // Link lists fields
104            struct thread_desc * next;                // instrusive link field for threads
105
106            // Current status related to monitors
107            struct monitor_desc ** current_monitors;  // currently held monitors
108            unsigned short current_monitor_count;     // number of currently held monitors
109            fptr_t current_monitor_func;              // last function that acquired monitors
110     };
111
112#endif //_INVOKE_H_
113#else //! defined(__CFA_INVOKE_PRIVATE__)
114#ifndef _INVOKE_PRIVATE_H_
115#define _INVOKE_PRIVATE_H_
116
117      struct machine_context_t {
118            void *SP;
119            void *FP;
120            void *PC;
121      };
122
123      // assembler routines that performs the context switch
124      extern void CtxInvokeStub( void );
125      void CtxSwitch( void * from, void * to ) asm ("CtxSwitch");
126
127      #if   defined( __x86_64__ )
128      #define CtxGet( ctx ) __asm__ ( \
129                  "movq %%rsp,%0\n"   \
130                  "movq %%rbp,%1\n"   \
131            : "=rm" (ctx.SP), "=rm" (ctx.FP) )
132      #elif defined( __i386__ )
133      #define CtxGet( ctx ) __asm__ ( \
134                  "movl %%esp,%0\n"   \
135                  "movl %%ebp,%1\n"   \
136            : "=rm" (ctx.SP), "=rm" (ctx.FP) )
137      #endif
138
139#endif //_INVOKE_PRIVATE_H_
140#endif //! defined(__CFA_INVOKE_PRIVATE__)
141#ifdef __CFORALL__
142}
143#endif
144
145// Local Variables: //
146// mode: c //
147// tab-width: 4 //
148// End: //
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