- 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;