X-Git-Url: https://git.liburcu.org/?p=urcu.git;a=blobdiff_plain;f=urcu.c;fp=urcu.c;h=e77306584d77f0fc012f6bfbae466452b3556b74;hp=94d1131e3dba6df7982a33def88f6ec3908c2bf2;hb=b0a841b4ff807dd29fe0cdbfe24900312f0e627b;hpb=f4fe930941ad7e73ca2064c8be1abc31626ec50b

diff --git a/urcu.c b/urcu.c
index 94d1131..e773065 100644
--- a/urcu.c
+++ b/urcu.c
@@ -236,9 +236,22 @@ static void wait_gp(void)
 {
 	/* Read reader_gp before read futex */
 	smp_mb_master(RCU_MB_GROUP);
-	if (uatomic_read(&rcu_gp.futex) == -1)
-		futex_async(&rcu_gp.futex, FUTEX_WAIT, -1,
-		      NULL, NULL, 0);
+	if (uatomic_read(&rcu_gp.futex) != -1)
+		return;
+	while (futex_async(&rcu_gp.futex, FUTEX_WAIT, -1,
+			NULL, NULL, 0)) {
+		switch (errno) {
+		case EWOULDBLOCK:
+			/* Value already changed. */
+			return;
+		case EINTR:
+			/* Retry if interrupted by signal. */
+			break;	/* Get out of switch. */
+		default:
+			/* Unexpected error. */
+			urcu_die(errno);
+		}
+	}
 }
 
 /*