_thr_umutex_trylock2
ret = _thr_umutex_trylock2(&m->m_lock, TID(curthread));
if (_thr_umutex_trylock2(mtx, id) == 0)
if (_thr_umutex_trylock2(mtx, id) == 0)
if (_thr_umutex_trylock2(mtx, id) == 0)