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Diffstat (limited to 'src/thread/pthread_mutex_trylock.c')
| -rw-r--r-- | src/thread/pthread_mutex_trylock.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/thread/pthread_mutex_trylock.c b/src/thread/pthread_mutex_trylock.c index af421472..6fc604fe 100644 --- a/src/thread/pthread_mutex_trylock.c +++ b/src/thread/pthread_mutex_trylock.c @@ -5,7 +5,7 @@ int pthread_mutex_trylock(pthread_mutex_t *m) int tid; if (m->_m_type == PTHREAD_MUTEX_NORMAL) - return -a_xchg(&m->_m_lock, 1) & EBUSY; + return (m->_m_lock || a_swap(&m->_m_lock, 1)) ? EBUSY : 0; tid = pthread_self()->tid; |