1 #include "pthread_impl.h"
4 int mtx_trylock(mtx_t *m)
6 if (m->_m_type == PTHREAD_MUTEX_NORMAL)
7 return (a_cas(&m->_m_lock, 0, EBUSY) & EBUSY) ? thrd_busy : thrd_success;
9 int ret = __pthread_mutex_trylock((pthread_mutex_t *)m);
11 default: return thrd_error;
12 case 0: return thrd_success;
13 case EBUSY: return thrd_busy;