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 */
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);
48 xbt_thread_join(xbt_thread_t thread) {
49 xbt_os_thread_join( thread->os_thread, NULL );
52 void xbt_thread_exit() {
53 xbt_os_thread_exit(NULL);
56 xbt_thread_t xbt_thread_self(void) {
57 return (xbt_thread_t)xbt_os_thread_getparam();
60 void xbt_thread_yield(void) {
61 xbt_os_thread_yield();
63 void xbt_thread_cancel(xbt_thread_t t) {
64 xbt_os_thread_cancel(t->os_thread);
66 /****** mutex related functions ******/
68 /* KEEP IT IN SYNC WITH OS IMPLEMENTATION (both win and lin) */
72 CRITICAL_SECTION lock;
76 xbt_mutex_t xbt_mutex_init(void) {
77 return (xbt_mutex_t)xbt_os_mutex_init();
80 void xbt_mutex_lock(xbt_mutex_t mutex) {
81 xbt_os_mutex_lock( (xbt_os_mutex_t)mutex );
84 void xbt_mutex_unlock(xbt_mutex_t mutex) {
85 xbt_os_mutex_unlock( (xbt_os_mutex_t)mutex );
88 void xbt_mutex_destroy(xbt_mutex_t mutex) {
89 xbt_os_mutex_destroy( (xbt_os_mutex_t)mutex );
93 enum { /* KEEP IT IN SYNC WITH OS IMPLEM */
100 /***** condition related functions *****/
101 typedef struct xbt_cond_ {
102 /* KEEP IT IN SYNC WITH OS IMPLEMENTATION (both win and lin) */
103 #ifdef HAVE_PTHREAD_H
106 HANDLE events[MAX_EVENTS];
108 unsigned int waiters_count; /* the number of waiters */
109 CRITICAL_SECTION waiters_count_lock; /* protect access to waiters_count */
113 xbt_cond_t xbt_cond_init(void) {
114 return (xbt_cond_t) xbt_os_cond_init();
117 void xbt_cond_wait(xbt_cond_t cond, xbt_mutex_t mutex) {
118 xbt_os_cond_wait( (xbt_os_cond_t)cond, (xbt_os_mutex_t)mutex );
121 void xbt_cond_timedwait(xbt_cond_t cond, xbt_mutex_t mutex, double delay) {
122 xbt_os_cond_timedwait( (xbt_os_cond_t)cond, (xbt_os_mutex_t)mutex, delay );
125 void xbt_cond_signal(xbt_cond_t cond) {
126 xbt_os_cond_signal( (xbt_os_cond_t)cond );
129 void xbt_cond_broadcast(xbt_cond_t cond){
130 xbt_os_cond_broadcast( (xbt_os_cond_t)cond );
132 void xbt_cond_destroy(xbt_cond_t cond){
133 xbt_os_cond_destroy( (xbt_os_cond_t)cond );