X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=src%2Fthread%2Fpthread_mutex_lock.c;h=99c15bd8f6f649c79f61c807341d049b878a3396;hb=4c4e22d781d75a461097cccc2ecac5adbafb1a59;hp=477b3d808175164ed1c1c2b3460b7673d19dce71;hpb=047e434ef5fd5437a74f98f63c40a77a683f7f3f;p=musl

diff --git a/src/thread/pthread_mutex_lock.c b/src/thread/pthread_mutex_lock.c
index 477b3d80..99c15bd8 100644
--- a/src/thread/pthread_mutex_lock.c
+++ b/src/thread/pthread_mutex_lock.c
@@ -3,6 +3,10 @@
 int pthread_mutex_lock(pthread_mutex_t *m)
 {
 	int r;
+
+	if (m->_m_type == PTHREAD_MUTEX_NORMAL && !a_swap(&m->_m_lock, EBUSY))
+		return 0;
+
 	while ((r=pthread_mutex_trylock(m)) == EBUSY) {
 		if (!(r=m->_m_lock) || (r&0x40000000)) continue;
 		if ((m->_m_type&3) == PTHREAD_MUTEX_ERRORCHECK