--- rpl/src/instructions_s10.c	2013/05/22 09:05:20	1.75
+++ rpl/src/instructions_s10.c	2013/05/23 12:45:08	1.77
@@ -408,9 +408,21 @@ instruction_spawn(struct_processus *s_et
 	while((*s_argument_thread).thread_actif == d_faux)
 	{
 		scrutation_interruptions(s_etat_processus);
-		pthread_mutex_lock(&((*s_argument_thread).mutex));
+
+		if (pthread_mutex_unlock(&((*s_argument_thread).mutex)) != 0)
+		{
+			(*s_etat_processus).erreur_systeme = d_es_processus;
+			return;
+		}
+
 		nanosleep(&attente, NULL);
-		pthread_mutex_unlock(&((*s_argument_thread).mutex));
+
+		if (pthread_mutex_lock(&((*s_argument_thread).mutex)) != 0)
+		{
+			(*s_etat_processus).erreur_systeme = d_es_processus;
+			return;
+		}
+
 		INCR_GRANULARITE(attente.tv_nsec);
 	}
 
@@ -508,12 +520,6 @@ instruction_spawn(struct_processus *s_et
 						(*(*l_element_courant).donnee).objet)).thread)
 						.tid, (*s_argument_thread).tid) != 0)
 				{
-					if (pthread_mutex_unlock(&((*s_etat_processus).mutex)) != 0)
-					{
-						(*s_etat_processus).erreur_systeme = d_es_processus;
-						return;
-					}
-
 					scrutation_injection(s_etat_processus);
 
 					if ((*s_etat_processus).nombre_interruptions_non_affectees
@@ -527,6 +533,12 @@ instruction_spawn(struct_processus *s_et
 						traitement_interruptions_logicielles(s_etat_processus);
 					}
 
+					if (pthread_mutex_unlock(&((*s_etat_processus).mutex)) != 0)
+					{
+						(*s_etat_processus).erreur_systeme = d_es_processus;
+						return;
+					}
+
 					nanosleep(&attente, NULL);
 					INCR_GRANULARITE(attente.tv_nsec);