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#include "pthread_impl.h"
int pthread_mutex_unlock(pthread_mutex_t *m)
{
if (m->_m_type == PTHREAD_MUTEX_RECURSIVE) {
if (a_fetch_add(&m->_m_lock, -1)==1 && m->_m_waiters)
__wake(&m->_m_lock, 1, 0);
return 0;
}
if (m->_m_type == PTHREAD_MUTEX_ERRORCHECK
&& m->_m_owner != pthread_self()->tid)
return EPERM;
m->_m_owner = 0;
m->_m_lock = 0;
if (m->_m_waiters) __wake(&m->_m_lock, 1, 0);
return 0;
}
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