3 /* xbt_synchro -- Synchronization virtualized depending on whether we are */
4 /* in simulation or real life (act on simulated processes) */
6 /* This is the real life implementation, using xbt_os_thread to be portable */
7 /* to windows and linux. */
9 /* Copyright 2006,2007 Malek Cherier, Martin Quinson
10 * All right reserved. */
12 /* This program is free software; you can redistribute it and/or modify it
13 * under the terms of the license (GNU LGPL) which comes with this package. */
15 #include "xbt/sysdep.h"
19 #include "xbt/synchro.h" /* This module */
20 #include "xbt/xbt_os_thread.h" /* The implementation we use */
22 /* the implementation would be cleaner (and faster) with ELF symbol aliasing */
23 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(xbt_sync_rl,xbt,"Synchronization mechanism (RL)");
25 typedef struct s_xbt_thread_ {
26 xbt_os_thread_t os_thread;
31 static void *xbt_thread_create_wrapper(void *p) {
32 xbt_thread_t t = (xbt_thread_t)p;
33 (*t->code)(t->userparam);
38 xbt_thread_t xbt_thread_create(void_f_pvoid_t* code, void* param) {
40 xbt_thread_t res = xbt_new0(s_xbt_thread_t,1);
41 res->userparam = param;
43 res->os_thread = xbt_os_thread_create(xbt_thread_create_wrapper,res);
44 DEBUG1("Create thread %p",res);
49 xbt_thread_join(xbt_thread_t thread) {
50 DEBUG1("Join thread %p",thread);
51 xbt_os_thread_join( thread->os_thread, NULL );
54 void xbt_thread_exit() {
55 DEBUG0("Thread exits");
56 xbt_os_thread_exit(NULL);
59 xbt_thread_t xbt_thread_self(void) {
60 return (xbt_thread_t)xbt_os_thread_getparam();
63 void xbt_thread_yield(void) {
64 DEBUG0("Thread yields");
65 xbt_os_thread_yield();
67 void xbt_thread_cancel(xbt_thread_t t) {
68 DEBUG1("Cancel thread %p",t);
69 xbt_os_thread_cancel(t->os_thread);
71 /****** mutex related functions ******/
73 /* KEEP IT IN SYNC WITH OS IMPLEMENTATION (both win and lin) */
77 CRITICAL_SECTION lock;
81 xbt_mutex_t xbt_mutex_init(void) {
82 xbt_mutex_t res = (xbt_mutex_t)xbt_os_mutex_init();
83 DEBUG1("Create mutex %p", res);
87 void xbt_mutex_lock(xbt_mutex_t mutex) {
88 DEBUG1("Lock mutex %p", mutex);
89 xbt_os_mutex_lock( (xbt_os_mutex_t)mutex );
92 void xbt_mutex_unlock(xbt_mutex_t mutex) {
93 DEBUG1("Unlock mutex %p", mutex);
94 xbt_os_mutex_unlock( (xbt_os_mutex_t)mutex );
97 void xbt_mutex_destroy(xbt_mutex_t mutex) {
98 DEBUG1("Destroy mutex %p", mutex);
99 xbt_os_mutex_destroy( (xbt_os_mutex_t)mutex );
103 enum { /* KEEP IT IN SYNC WITH OS IMPLEM */
110 /***** condition related functions *****/
111 typedef struct xbt_cond_ {
112 /* KEEP IT IN SYNC WITH OS IMPLEMENTATION (both win and lin) */
113 #ifdef HAVE_PTHREAD_H
116 HANDLE events[MAX_EVENTS];
118 unsigned int waiters_count; /* the number of waiters */
119 CRITICAL_SECTION waiters_count_lock; /* protect access to waiters_count */
123 xbt_cond_t xbt_cond_init(void) {
124 xbt_cond_t res = (xbt_cond_t) xbt_os_cond_init();
125 DEBUG1("Create cond %p", res);
126 return (xbt_cond_t) xbt_os_cond_init();
129 void xbt_cond_wait(xbt_cond_t cond, xbt_mutex_t mutex) {
130 DEBUG2("Wait cond %p, mutex %p", cond, mutex);
131 xbt_os_cond_wait( (xbt_os_cond_t)cond, (xbt_os_mutex_t)mutex );
134 void xbt_cond_timedwait(xbt_cond_t cond, xbt_mutex_t mutex, double delay) {
135 DEBUG3("Wait cond %p, mutex %p for %f sec", cond, mutex,delay);
136 xbt_os_cond_timedwait( (xbt_os_cond_t)cond, (xbt_os_mutex_t)mutex, delay );
139 void xbt_cond_signal(xbt_cond_t cond) {
140 DEBUG1("Signal cond %p", cond);
141 xbt_os_cond_signal( (xbt_os_cond_t)cond );
144 void xbt_cond_broadcast(xbt_cond_t cond){
145 DEBUG1("Broadcast cond %p", cond);
146 xbt_os_cond_broadcast( (xbt_os_cond_t)cond );
148 void xbt_cond_destroy(xbt_cond_t cond){
149 DEBUG1("Destroy cond %p", cond);
150 xbt_os_cond_destroy( (xbt_os_cond_t)cond );