X-Git-Url: http://nsz.repo.hu/git/?p=musl;a=blobdiff_plain;f=src%2Fthread%2Fpthread_rwlock_trywrlock.c;h=bb3d3a992d1f3dd8a4919de9945b7fad75786a6a;hp=c029b87408081b30c9ddcc39ed637e3b5e47d8ae;hb=f143458223f90262a9c2d929f9e815a74e3aa139;hpb=0b44a0315b47dd8eced9f3b7f31580cf14bbfc01

diff --git a/src/thread/pthread_rwlock_trywrlock.c b/src/thread/pthread_rwlock_trywrlock.c
index c029b874..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->__wrlock, 1))
-		return EAGAIN;
-	if (rw->__readers) {
-		a_store(&rw->__wrlock, 0);
-		return EAGAIN;
-	}
-	rw->__owner = pthread_self()->tid;
+	if (a_cas(&rw->_rw_lock, 0, 0x7fffffff)) return EBUSY;
 	return 0;
 }