Rich Felker
e882756311
this allows sys/types.h to provide the pthread types, as required by POSIX. this design also facilitates forcing ABI-compatible sizes in the arch-specific alltypes.h, while eliminating the need for developers changing the internals of the pthread types to poke around with arch-specific headers they may not be able to test.
16 lines
382 B
C
16 lines
382 B
C
#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->_m_waiters), w++;
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if (__timedwait(&m->_m_lock, 1, CLOCK_REALTIME, at, 0) == ETIMEDOUT) {
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if (w) a_dec(&m->_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->_m_waiters);
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return r;
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}
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