X-Git-Url: http://nsz.repo.hu/git/?p=musl;a=blobdiff_plain;f=src%2Fthread%2Fpthread_rwlock_trywrlock.c;h=bb3d3a992d1f3dd8a4919de9945b7fad75786a6a;hp=202e256aa0471de4e20d21696b312191e6fa703a;hb=3b5e69052a867e9d99cf4c655d775bd06e3437f1;hpb=e5dd18319bbd47c89aac5e1571771958a43e067d

diff --git a/src/thread/pthread_rwlock_trywrlock.c b/src/thread/pthread_rwlock_trywrlock.c
index 202e256a..bb3d3a99 100644
--- a/src/thread/pthread_rwlock_trywrlock.c
+++ b/src/thread/pthread_rwlock_trywrlock.c
@@ -2,12 +2,6 @@
 
 int pthread_rwlock_trywrlock(pthread_rwlock_t *rw)
 {
-	if (a_xchg(&rw->_rw_wrlock, 1))
-		return EBUSY;
-	if (rw->_rw_readers) {
-		a_store(&rw->_rw_wrlock, 0);
-		return EBUSY;
-	}
-	rw->_rw_owner = pthread_self()->tid;
+	if (a_cas(&rw->_rw_lock, 0, 0x7fffffff)) return EBUSY;
 	return 0;
 }