X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=src%2Fthread%2Fpthread_mutex_timedlock.c;h=c24270d8f54ee6e36d30067b6ffee8b67a2a6652;hb=ac562aa1ef4012f617583f474a8d8e5c972ed6ee;hp=20ce01283816fcd108662c424ae3f88d91ea3e53;hpb=e882756311c7b06e59fcc8e582f03852b7dcfd30;p=musl

diff --git a/src/thread/pthread_mutex_timedlock.c b/src/thread/pthread_mutex_timedlock.c
index 20ce0128..c24270d8 100644
--- a/src/thread/pthread_mutex_timedlock.c
+++ b/src/thread/pthread_mutex_timedlock.c
@@ -1,15 +1,24 @@
 #include "pthread_impl.h"
 
-int pthread_mutex_timedlock(pthread_mutex_t *m, const struct timespec *at)
+int pthread_mutex_timedlock(pthread_mutex_t *restrict m, const struct timespec *restrict at)
 {
-	int r, w=0;
+	int r, t;
+
+	if (m->_m_type == PTHREAD_MUTEX_NORMAL && !a_cas(&m->_m_lock, 0, EBUSY))
+		return 0;
+
 	while ((r=pthread_mutex_trylock(m)) == EBUSY) {
-		if (!w) a_inc(&m->_m_waiters), w++;
-		if (__timedwait(&m->_m_lock, 1, CLOCK_REALTIME, at, 0) == ETIMEDOUT) {
-			if (w) a_dec(&m->_m_waiters);
-			return ETIMEDOUT;
-		}
+		if (!(r=m->_m_lock) || (r&0x40000000)) continue;
+		if ((m->_m_type&3) == PTHREAD_MUTEX_ERRORCHECK
+		 && (r&0x1fffffff) == pthread_self()->tid)
+			return EDEADLK;
+
+		a_inc(&m->_m_waiters);
+		t = r | 0x80000000;
+		a_cas(&m->_m_lock, r, t);
+		r = __timedwait(&m->_m_lock, t, CLOCK_REALTIME, at, 0, 0, 0);
+		a_dec(&m->_m_waiters);
+		if (r && r != EINTR) break;
 	}
-	if (w) a_dec(&m->_m_waiters);
 	return r;
 }