| #include "pthread_impl.h" | |
| #include <threads.h> | |
| int mtx_trylock(mtx_t *m) | |
| { | |
| if (m->_m_type == PTHREAD_MUTEX_NORMAL) | |
| return (a_cas(&m->_m_lock, 0, EBUSY) & EBUSY) ? thrd_busy : thrd_success; | |
| int ret = __pthread_mutex_trylock((pthread_mutex_t *)m); | |
| switch (ret) { | |
| default: return thrd_error; | |
| case 0: return thrd_success; | |
| case EBUSY: return thrd_busy; | |
| } | |
| } |