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| author | Rich Felker <dalias@aerifal.cx> | 2011-03-17 13:35:08 -0400 |
|---|---|---|
| committer | Rich Felker <dalias@aerifal.cx> | 2011-03-17 13:35:08 -0400 |
| commit | 18c7ea8055cf733f168d2c74d7cc8523a360f5f1 (patch) | |
| tree | 853806a94f1f044ba64e136b2abe2e6ff54db456 /src/thread/pthread_mutex_unlock.c | |
| parent | 93cc986ab37b14f8c6b624439ce2a2beca7b3cf7 (diff) | |
| download | musl-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.c | 2 |
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; |