--- rpl/src/instructions_s10.c	2013/05/21 12:10:12	1.74
+++ rpl/src/instructions_s10.c	2013/05/23 12:45:08	1.77
@@ -399,13 +399,39 @@ instruction_spawn(struct_processus *s_et
 	attente.tv_sec = 0;
 	attente.tv_nsec = GRANULARITE_us * 1000;
 
+	if (pthread_mutex_lock(&((*s_argument_thread).mutex)) != 0)
+	{
+		(*s_etat_processus).erreur_systeme = d_es_processus;
+		return;
+	}
+
 	while((*s_argument_thread).thread_actif == d_faux)
 	{
 		scrutation_interruptions(s_etat_processus);
+
+		if (pthread_mutex_unlock(&((*s_argument_thread).mutex)) != 0)
+		{
+			(*s_etat_processus).erreur_systeme = d_es_processus;
+			return;
+		}
+
 		nanosleep(&attente, NULL);
+
+		if (pthread_mutex_lock(&((*s_argument_thread).mutex)) != 0)
+		{
+			(*s_etat_processus).erreur_systeme = d_es_processus;
+			return;
+		}
+
 		INCR_GRANULARITE(attente.tv_nsec);
 	}
 
+	if (pthread_mutex_unlock(&((*s_argument_thread).mutex)) != 0)
+	{
+		(*s_etat_processus).erreur_systeme = d_es_processus;
+		return;
+	}
+
 	if (pthread_attr_destroy(&attributs) != 0)
 	{
 		(*s_etat_processus).erreur_systeme = d_es_processus;
@@ -494,12 +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
@@ -513,6 +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);