-xbt_os_cond_t xbt_os_cond_init(void) {
-
- xbt_os_cond_t res = xbt_new0(s_xbt_os_cond_t,1);
-
- memset(& res->waiters_count_lock,0,sizeof(CRITICAL_SECTION));
-
- /* initialize the critical section object */
- InitializeCriticalSection(& res->waiters_count_lock);
-
- res->waiters_count = 0;
-
- /* Create an auto-reset event */
- res->events[SIGNAL] = CreateEvent (NULL, FALSE, FALSE, NULL);
-
- if(!res->events[SIGNAL]){
- DeleteCriticalSection(& res->waiters_count_lock);
- free(res);
- THROW0(system_error,0,"CreateEvent failed for the signals");
- }
-
- /* Create a manual-reset event. */
- res->events[BROADCAST] = CreateEvent (NULL, TRUE, FALSE,NULL);
-
- if(!res->events[BROADCAST]){
-
- DeleteCriticalSection(& res->waiters_count_lock);
- CloseHandle(res->events[SIGNAL]);
- free(res);
- THROW0(system_error,0,"CreateEvent failed for the broadcasts");
- }
-
- return res;
-}
-
-void xbt_os_cond_wait(xbt_os_cond_t cond, xbt_os_mutex_t mutex) {
-
- unsigned long wait_result;
- int is_last_waiter;
-
- /* lock the threads counter and increment it */
- EnterCriticalSection (& cond->waiters_count_lock);
- cond->waiters_count++;
- LeaveCriticalSection (& cond->waiters_count_lock);
-
- /* unlock the mutex associate with the condition */
- LeaveCriticalSection (& mutex->lock);
-
- /* wait for a signal (broadcast or no) */
- wait_result = WaitForMultipleObjects (2, cond->events, FALSE, INFINITE);
-
- if(wait_result == WAIT_FAILED)
- THROW0(system_error,0,"WaitForMultipleObjects failed, so we cannot wait on the condition");
-
- /* we have a signal lock the condition */
- EnterCriticalSection (& cond->waiters_count_lock);
- cond->waiters_count--;
-
- /* it's the last waiter or it's a broadcast ? */
- is_last_waiter = ((wait_result == WAIT_OBJECT_0 + BROADCAST - 1) && (cond->waiters_count == 0));
-
- LeaveCriticalSection (& cond->waiters_count_lock);
-
- /* yes it's the last waiter or it's a broadcast
- * only reset the manual event (the automatic event is reset in the WaitForMultipleObjects() function
- * by the system.
- */
- if (is_last_waiter)
- if(!ResetEvent (cond->events[BROADCAST]))
- THROW0(system_error,0,"ResetEvent failed");
-
- /* 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;
-
- EnterCriticalSection (& cond->waiters_count_lock);
- have_waiters = cond->waiters_count > 0;
- LeaveCriticalSection (& cond->waiters_count_lock);
-
- if (have_waiters)
- if(!SetEvent(cond->events[SIGNAL]))
- THROW0(system_error,0,"SetEvent failed");
-
- xbt_os_thread_yield();
-}
-
-void xbt_os_cond_broadcast(xbt_os_cond_t cond){
- int have_waiters;
-
- EnterCriticalSection (& cond->waiters_count_lock);
- have_waiters = cond->waiters_count > 0;
- LeaveCriticalSection (& cond->waiters_count_lock);
-
- if (have_waiters)
- SetEvent(cond->events[BROADCAST]);
-}
-
-void xbt_os_cond_destroy(xbt_os_cond_t cond){
- int error = 0;
-
- if (!cond) return;
-
- if(!CloseHandle(cond->events[SIGNAL]))
- error = 1;
-
- if(!CloseHandle(cond->events[BROADCAST]))
- error = 1;
-
- DeleteCriticalSection(& cond->waiters_count_lock);
-
- xbt_free(cond);
-
- if (error)
- THROW0(system_error,0,"Error while destroying the condition");