Last change
on this file was 444, checked in by coas-nagasima, 4 years ago |
muslのソースコードを追加
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File size:
390 bytes
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1 | #include "pthread_impl.h"
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2 | #include <threads.h>
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3 |
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4 | int __pthread_mutex_trylock(mtx_t *);
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5 |
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6 | int mtx_trylock(mtx_t *m)
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7 | {
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8 | if (m->_m_type == PTHREAD_MUTEX_NORMAL)
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9 | return (a_cas(&m->_m_lock, 0, EBUSY) & EBUSY) ? thrd_busy : thrd_success;
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10 |
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11 | int ret = __pthread_mutex_trylock(m);
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12 | switch (ret) {
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13 | default: return thrd_error;
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14 | case 0: return thrd_success;
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15 | case EBUSY: return thrd_busy;
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16 | }
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17 | }
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