optimize spinlock spin

15 years ago · c322fe4e1a
1 changed files with 1 additions and 1 deletions
--- 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;
 }