grabs a lock when it tries to reset

diff --git a/Robust/src/Runtime/psemaphore.c b/Robust/src/Runtime/psemaphore.c
index 64cdda50ca68bb49d53f8500c227580a241c17d5..05c7a1550967394e5a2f533363dc0ec5607a9a38 100644 (file)
--- a/Robust/src/Runtime/psemaphore.c
+++ b/Robust/src/Runtime/psemaphore.c
@@ -42,12 +42,8 @@ void psem_give_tag( psemaphore* sem, int tag) {
 
 
 void psem_reset( psemaphore* sem ) {
 
 
 void psem_reset( psemaphore* sem ) {

-  // this should NEVER BE CALLED if it is possible
-  // the semaphore is still in use, NEVER
-  if( pthread_mutex_trylock( &(sem->lock) ) == EBUSY ) {
-    exit( -1 );
-  }
-  pthread_mutex_unlock( &(sem->lock) );
+  pthread_mutex_lock  ( &(sem->lock) );

   sem->tag++;
   sem->signaled = 0;
   sem->tag++;
   sem->signaled = 0;

+  pthread_mutex_unlock( &(sem->lock) );

 }
 }