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optimize spinlock spin
[oweals/musl.git]
/
src
/
thread
/
pthread_spin_lock.c
diff --git
a/src/thread/pthread_spin_lock.c
b/src/thread/pthread_spin_lock.c
index 59fa6ea89ad2e322f0071724c7ab09275a4a3258..9e43f47539d6dad5661936900ffb20e0c9c36b50 100644
(file)
--- 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;
}