blob: 40a8b8c2977212c3006b91f5072be3a514beb5b2 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
|
#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;
}
}
|
