X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/19bdb25835da6ee353675dfb995cf9ca886361b2..55053de21d932fb0cc93eec52ec22ebc38ae936f:/src/xbt/context.c

diff --git a/src/xbt/context.c b/src/xbt/context.c
index d62813704e..fce1e64c3c 100644
--- a/src/xbt/context.c
+++ b/src/xbt/context.c
@@ -44,11 +44,17 @@ static void __xbt_context_yield(xbt_context_t context)
 #ifdef USE_PTHREADS
   if (context) {
     xbt_context_t self = current_context;
+    DEBUG0("**** Locking ****");
     pthread_mutex_lock(&(context->mutex));
+    DEBUG0("**** Updating current_context ****");
     current_context = context;
+    DEBUG0("**** Releasing the prisonner ****");
     pthread_cond_signal(&(context->cond));
+    DEBUG0("**** Going to jail ****");
     pthread_cond_wait(&(context->cond), &(context->mutex));
+    DEBUG0("**** Unlocking ****");
     pthread_mutex_unlock(&(context->mutex));
+    DEBUG0("**** Updating current_context ****");
     current_context = self;
   }
 #else
@@ -102,6 +108,8 @@ static void *__context_wrapper(void *c)
   int i;
 
 #ifdef USE_PTHREADS
+  pthread_mutex_lock(&(context->mutex));
+  pthread_cond_signal(&(context->cond));
   pthread_cond_wait(&(context->cond), &(context->mutex));
   pthread_mutex_unlock(&(context->mutex));
 #endif
@@ -167,11 +175,12 @@ void xbt_context_empty_trash(void)
 void xbt_context_start(xbt_context_t context) 
 {
 #ifdef USE_PTHREADS
-  pthread_mutex_lock(&(context->mutex));
-
   /* Launch the thread */
+  pthread_mutex_lock(&(context->mutex));
   xbt_assert0(!pthread_create(context->thread, NULL, __context_wrapper, context),
 	      "Unable to create a thread.");
+  pthread_cond_wait(&(context->cond), &(context->mutex));
+  pthread_mutex_unlock(&(context->mutex));  
 #else
   makecontext (&(context->uc), (void (*) (void)) __context_wrapper,
 	       1, context);