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16 lines
378 B
16 lines
378 B
15 years ago
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#include "pthread_impl.h"
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int pthread_mutex_timedlock(pthread_mutex_t *m, const struct timespec *at)
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{
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int r, w=0;
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while ((r=pthread_mutex_trylock(m)) == EBUSY) {
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if (!w) a_inc(&m->__waiters), w++;
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if (__timedwait(&m->__lock, 1, CLOCK_REALTIME, at, 0) == ETIMEDOUT) {
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if (w) a_dec(&m->__waiters);
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return ETIMEDOUT;
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}
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}
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if (w) a_dec(&m->__waiters);
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return r;
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}
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