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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
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;