about summary refs log tree commit diff
path: root/src/thread/pthread_mutex_unlock.c
diff options
context:
space:
mode:
authorRich Felker <dalias@aerifal.cx>2011-03-17 13:35:08 -0400
committerRich Felker <dalias@aerifal.cx>2011-03-17 13:35:08 -0400
commit18c7ea8055cf733f168d2c74d7cc8523a360f5f1 (patch)
tree853806a94f1f044ba64e136b2abe2e6ff54db456 /src/thread/pthread_mutex_unlock.c
parent93cc986ab37b14f8c6b624439ce2a2beca7b3cf7 (diff)
downloadmusl-18c7ea8055cf733f168d2c74d7cc8523a360f5f1.tar.gz
musl-18c7ea8055cf733f168d2c74d7cc8523a360f5f1.tar.xz
musl-18c7ea8055cf733f168d2c74d7cc8523a360f5f1.zip
avoid function call to pthread_self in mutex unlock
if the mutex was previously locked, we can assume pthread_self was
already called at the time of locking, and thus that the thread
pointer is initialized.
Diffstat (limited to 'src/thread/pthread_mutex_unlock.c')
-rw-r--r--src/thread/pthread_mutex_unlock.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/thread/pthread_mutex_unlock.c b/src/thread/pthread_mutex_unlock.c
index 61a2b947..3733788d 100644
--- a/src/thread/pthread_mutex_unlock.c
+++ b/src/thread/pthread_mutex_unlock.c
@@ -3,7 +3,7 @@
 int pthread_mutex_unlock(pthread_mutex_t *m)
 {
 	if (m->_m_type != PTHREAD_MUTEX_NORMAL) {
-		if (m->_m_lock != pthread_self()->tid)
+		if (!m->_m_lock || m->_m_lock != __pthread_self()->tid)
 		 	return EPERM;
 		if (m->_m_type == PTHREAD_MUTEX_RECURSIVE && --m->_m_count)
 			return 0;