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authorRich Felker <dalias@aerifal.cx>2011-03-24 23:05:17 -0400
committerRich Felker <dalias@aerifal.cx>2011-03-24 23:05:17 -0400
commitc322fe4e1a9bcc20f7a2ded1ac0e1674ea282bc0 (patch)
treed09602930aeb632a17ad271e0775499790a02b2e /src
parent8ae2fa65636b732e04e19b2521edc335867ba53b (diff)
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optimize spinlock spin
Diffstat (limited to 'src')
-rw-r--r--src/thread/pthread_spin_lock.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/thread/pthread_spin_lock.c b/src/thread/pthread_spin_lock.c
index 59fa6ea8..9e43f475 100644
--- a/src/thread/pthread_spin_lock.c
+++ b/src/thread/pthread_spin_lock.c
@@ -2,6 +2,6 @@
 
 int pthread_spin_lock(pthread_spinlock_t *s)
 {
-	while (a_xchg(s, 1));
+	while (*s || a_xchg(s, 1));
 	return 0;
 }