X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=src%2Fthread%2Fpthread_rwlock_timedwrlock.c;h=7f26dad1f5915e8cf5f81f6a39e9695a071d5005;hb=a9a9882fbe089a0a9f562d8ecd4c96e52b3548f1;hp=339a1679c252bba42edfebdfda136f864aa4a3f7;hpb=400c5e5c8307a2ebe44ef1f203f5a15669f20347;p=musl

diff --git a/src/thread/pthread_rwlock_timedwrlock.c b/src/thread/pthread_rwlock_timedwrlock.c
index 339a1679..7f26dad1 100644
--- a/src/thread/pthread_rwlock_timedwrlock.c
+++ b/src/thread/pthread_rwlock_timedwrlock.c
@@ -3,12 +3,19 @@
 int pthread_rwlock_timedwrlock(pthread_rwlock_t *restrict rw, const struct timespec *restrict at)
 {
 	int r, t;
+	
+	r = pthread_rwlock_trywrlock(rw);
+	if (r != EBUSY) return r;
+	
+	int spins = 100;
+	while (spins-- && rw->_rw_lock && !rw->_rw_waiters) a_spin();
+
 	while ((r=pthread_rwlock_trywrlock(rw))==EBUSY) {
 		if (!(r=rw->_rw_lock)) continue;
 		t = r | 0x80000000;
 		a_inc(&rw->_rw_waiters);
 		a_cas(&rw->_rw_lock, r, t);
-		r = __timedwait(&rw->_rw_lock, t, CLOCK_REALTIME, at, 0, 0, 0);
+		r = __timedwait(&rw->_rw_lock, t, CLOCK_REALTIME, at, rw->_rw_shared^128);
 		a_dec(&rw->_rw_waiters);
 		if (r && r != EINTR) return r;
 	}