int pthread_mutex_lock(pthread_mutex_t *m)
{
- int r;
-
- if (m->_m_type == PTHREAD_MUTEX_NORMAL && !a_swap(&m->_m_lock, EBUSY))
+ if (m->_m_type == PTHREAD_MUTEX_NORMAL && !a_cas(&m->_m_lock, 0, 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
- && (r&0x1fffffff) == pthread_self()->tid)
- return EDEADLK;
- __wait(&m->_m_lock, &m->_m_waiters, r, 0);
- }
- return r;
+ return pthread_mutex_timedlock(m, 0);
}