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https://github.com/fluencelabs/musl
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20 lines
405 B
C
20 lines
405 B
C
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#include "pthread_impl.h"
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int pthread_mutex_unlock(pthread_mutex_t *m)
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{
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if (m->__type == PTHREAD_MUTEX_RECURSIVE) {
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if (a_fetch_add(&m->__lock, -1)==1 && m->__waiters)
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__wake(&m->__lock, 1, 0);
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return 0;
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}
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if (m->__type == PTHREAD_MUTEX_ERRORCHECK
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&& m->__owner != pthread_self())
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return EPERM;
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m->__owner = 0;
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m->__lock = 0;
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if (m->__waiters) __wake(&m->__lock, 1, 0);
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return 0;
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}
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