add the ability to specify a timeout on waiting a condition in every interfaces ...

[simgrid.git] / src / xbt / xbt_os_thread.c

diff --git a/src/xbt/xbt_os_thread.c b/src/xbt/xbt_os_thread.c
index 73fe3a4..81c86e9 100644 (file)
--- a/src/xbt/xbt_os_thread.c
+++ b/src/xbt/xbt_os_thread.c
@@ -13,6 +13,7 @@
 #include "xbt/sysdep.h"
 #include "xbt/ex.h"
 #include "portable.h"
+#include "xbt/xbt_os_time.h" /* Portable time facilities */
 #include "xbt/xbt_os_thread.h" /* This module */
 #include "xbt_modinter.h" /* Initialization/finalization of this module */
 
@@ -165,6 +166,24 @@ void xbt_os_cond_wait(xbt_os_cond_t cond, xbt_os_mutex_t mutex) {
            cond,mutex, strerror(errcode));
 }
 
+#include <time.h>
+#include <math.h>
+void xbt_os_cond_timedwait(xbt_os_cond_t cond, xbt_os_mutex_t mutex, double delay) {
+   int errcode;
+   struct timespec ts_end;
+   double end = delay + xbt_os_time();
+   ts_end.tv_sec = (time_t) floor(end);
+   ts_end.tv_nsec = (long)  ( ( end - ts_end.tv_sec) * 1000000000);
+   switch ( (errcode=pthread_cond_timedwait(&(cond->c),&(mutex->m), &ts_end)) ) {
+    case ETIMEDOUT:
+     THROW3(timeout_error,errcode,"condition %p (mutex %p) wasn't signaled before timeout (%f)",
+           cond,mutex, delay);
+    default:
+     THROW4(system_error,errcode,"pthread_cond_timedwait(%p,%p,%f) failed: %s",
+           cond,mutex, delay, strerror(errcode));
+   }   
+}
+
 void xbt_os_cond_signal(xbt_os_cond_t cond) {
    int errcode;
    if ((errcode=pthread_cond_signal(&(cond->c))))
@@ -396,6 +415,9 @@ void xbt_os_cond_wait(xbt_os_cond_t cond, xbt_os_mutex_t mutex) {
    /* relock the mutex associated with the condition in accordance with the posix thread specification */
    EnterCriticalSection (& mutex->lock);
 }
+void xbt_os_cond_timedwait(xbt_os_cond_t cond, xbt_os_mutex_t mutex, double delay) {
+   THROW_UNIMPLEMENTED;
+}
 
 void xbt_os_cond_signal(xbt_os_cond_t cond) {
    int have_waiters;