--- rpl/src/instructions_s1.c	2019/02/09 13:36:40	1.100
+++ rpl/src/instructions_s1.c	2019/02/12 14:38:43	1.102
@@ -3406,6 +3406,8 @@ instruction_syseval(struct_processus *s_
 	struct sigaction			action_courante;
 	struct sigaction			action_passee;
 
+	struct timespec				attente;
+
 	unsigned char				*ligne;
 	unsigned char				*ptr;
 	unsigned char				*ptr2;
@@ -3671,7 +3673,34 @@ instruction_syseval(struct_processus *s_
 
 		fflush(NULL);
 
-		verrouillage_threads_concurrents(s_etat_processus);
+		attente.tv_sec = 0;
+		attente.tv_nsec = GRANULARITE_us * 1000;
+
+		while(pthread_mutex_trylock(&mutex_sigaction) != 0)
+		{
+#			ifndef SEMAPHORES_NOMMES
+				if (sem_post(&((*s_etat_processus).semaphore_fork)) != 0)
+#			else
+				if (sem_post((*s_etat_processus).semaphore_fork) != 0)
+#			endif
+			{
+				(*s_etat_processus).erreur_systeme = d_es_processus;
+				return;
+			}
+
+			nanosleep(&attente, NULL);
+			INCR_GRANULARITE(attente.tv_nsec);
+
+#			ifndef SEMAPHORES_NOMMES
+				while(sem_wait(&((*s_etat_processus).semaphore_fork)) != 0)
+#			else
+				while(sem_wait((*s_etat_processus).semaphore_fork) != 0)
+#			endif
+			{
+				(*s_etat_processus).erreur_systeme = d_es_processus;
+				return;
+			}
+		}
 
 		action_courante.sa_handler = SIG_IGN;
 		action_courante.sa_flags = 0;
@@ -3690,6 +3719,8 @@ instruction_syseval(struct_processus *s_
 			return;
 		}
 
+		verrouillage_threads_concurrents(s_etat_processus);
+
 		pid = fork();
 
 		if (pid < 0)
@@ -3837,6 +3868,12 @@ instruction_syseval(struct_processus *s_
 				return;
 			}
 
+			if (pthread_mutex_unlock(&mutex_sigaction) != 0)
+			{
+				(*s_etat_processus).erreur_systeme = d_es_processus;
+				return;
+			}
+
 			deverrouillage_threads_concurrents(s_etat_processus);
 
 			if (close(pipes_entree[0]) != 0)