1 /* xbt_synchro -- Synchronization virtualized depending on whether we are */
2 /* in simulation or real life (act on simulated processes) */
4 /* This is the real life implementation, using xbt_os_thread to be portable */
5 /* to windows and linux. */
7 /* Copyright (c) 2007, 2008, 2009, 2010. The SimGrid Team.
8 * All rights reserved. */
10 /* This program is free software; you can redistribute it and/or modify it
11 * under the terms of the license (GNU LGPL) which comes with this package. */
13 #include "xbt/sysdep.h"
17 #include "xbt/synchro.h" /* This module */
18 #include "xbt/xbt_os_thread.h" /* The implementation we use */
20 /* the implementation would be cleaner (and faster) with ELF symbol aliasing */
21 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(xbt_sync, xbt,
22 "Synchronization mechanism");
24 typedef struct s_xbt_thread_ {
25 xbt_os_thread_t os_thread;
30 static void *xbt_thread_create_wrapper(void *p)
32 xbt_thread_t t = (xbt_thread_t) p;
33 DEBUG1("I'm thread %p", p);
34 (*t->code) (t->userparam);
39 xbt_thread_t xbt_thread_create(const char *name, void_f_pvoid_t code,
40 void *param, int joinable)
43 xbt_thread_t res = xbt_new0(s_xbt_thread_t, 1);
44 res->userparam = param;
46 DEBUG1("Create thread %p", res);
47 res->os_thread = xbt_os_thread_create(name, xbt_thread_create_wrapper, res);
51 const char *xbt_thread_name(xbt_thread_t t)
53 return xbt_os_thread_name(t->os_thread);
56 const char *xbt_thread_self_name(void)
58 return xbt_os_thread_self_name();
61 void xbt_thread_join(xbt_thread_t thread)
63 DEBUG1("Join thread %p", thread);
64 xbt_os_thread_join(thread->os_thread, NULL);
68 void xbt_thread_exit()
70 DEBUG0("Thread exits");
71 xbt_os_thread_exit(NULL);
74 xbt_thread_t xbt_thread_self(void)
76 return (xbt_thread_t) xbt_os_thread_self();
79 void xbt_thread_yield(void)
81 DEBUG0("Thread yields");
82 xbt_os_thread_yield();
85 void xbt_thread_cancel(xbt_thread_t t)
87 DEBUG1("Cancel thread %p", t);
88 xbt_os_thread_cancel(t->os_thread);
91 /****** mutex related functions ******/
93 /* KEEP IT IN SYNC WITH OS IMPLEMENTATION (both win and lin) */
97 CRITICAL_SECTION lock;
101 xbt_mutex_t xbt_mutex_init(void)
103 xbt_mutex_t res = (xbt_mutex_t) xbt_os_mutex_init();
104 DEBUG1("Create mutex %p", res);
108 void xbt_mutex_acquire(xbt_mutex_t mutex)
110 DEBUG1("Acquire mutex %p", mutex);
111 xbt_os_mutex_acquire((xbt_os_mutex_t) mutex);
114 void xbt_mutex_timedacquire(xbt_mutex_t mutex, double delay)
116 DEBUG2("Acquire mutex %p with delay %lf", mutex, delay);
117 xbt_os_mutex_timedacquire((xbt_os_mutex_t) mutex, delay);
120 void xbt_mutex_release(xbt_mutex_t mutex)
122 DEBUG1("Unlock mutex %p", mutex);
123 xbt_os_mutex_release((xbt_os_mutex_t) mutex);
126 void xbt_mutex_destroy(xbt_mutex_t mutex)
128 DEBUG1("Destroy mutex %p", mutex);
129 xbt_os_mutex_destroy((xbt_os_mutex_t) mutex);
133 enum { /* KEEP IT IN SYNC WITH OS IMPLEM */
140 /***** condition related functions *****/
141 typedef struct xbt_cond_ {
142 /* KEEP IT IN SYNC WITH OS IMPLEMENTATION (both win and lin) */
143 #ifdef HAVE_PTHREAD_H
146 HANDLE events[MAX_EVENTS];
148 unsigned int waiters_count; /* the number of waiters */
149 CRITICAL_SECTION waiters_count_lock; /* protect access to waiters_count */
153 xbt_cond_t xbt_cond_init(void)
155 xbt_cond_t res = (xbt_cond_t) xbt_os_cond_init();
156 DEBUG1("Create cond %p", res);
160 void xbt_cond_wait(xbt_cond_t cond, xbt_mutex_t mutex)
162 DEBUG2("Wait cond %p, mutex %p", cond, mutex);
163 xbt_os_cond_wait((xbt_os_cond_t) cond, (xbt_os_mutex_t) mutex);
166 void xbt_cond_timedwait(xbt_cond_t cond, xbt_mutex_t mutex, double delay)
168 DEBUG3("Wait cond %p, mutex %p for %f sec", cond, mutex, delay);
169 xbt_os_cond_timedwait((xbt_os_cond_t) cond, (xbt_os_mutex_t) mutex, delay);
170 DEBUG3("Done waiting cond %p, mutex %p for %f sec", cond, mutex, delay);
173 void xbt_cond_signal(xbt_cond_t cond)
175 DEBUG1("Signal cond %p", cond);
176 xbt_os_cond_signal((xbt_os_cond_t) cond);
179 void xbt_cond_broadcast(xbt_cond_t cond)
181 DEBUG1("Broadcast cond %p", cond);
182 xbt_os_cond_broadcast((xbt_os_cond_t) cond);
185 void xbt_cond_destroy(xbt_cond_t cond)
187 DEBUG1("Destroy cond %p", cond);
188 xbt_os_cond_destroy((xbt_os_cond_t) cond);