X-Git-Url: http://git.liburcu.org/?p=userspace-rcu.git;a=blobdiff_plain;f=urcu.c;h=c5abeafa06d3bd796a2148a1effdf90c2c959dd1;hp=1d4bf7afb04030155f7cb88d4dcb2cf8e2518a66;hb=7a3e2ed26a6be1deac2cfde1d062526497d4ae9f;hpb=ed42f6768d2116c47ca9ef2c17927a45f6b98f04

diff --git a/urcu.c b/urcu.c
index 1d4bf7a..c5abeaf 100644
--- a/urcu.c
+++ b/urcu.c
@@ -224,9 +224,22 @@ static void wait_gp(void)
 {
 	/* Read reader_gp before read futex */
 	smp_mb_master(RCU_MB_GROUP);
-	if (uatomic_read(&gp_futex) == -1)
-		futex_async(&gp_futex, FUTEX_WAIT, -1,
-		      NULL, NULL, 0);
+	if (uatomic_read(&gp_futex) != -1)
+		return;
+	while (futex_async(&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);
+		}
+	}
 }
 
 /*