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