1 #include "pthread_impl.h"
3 int __pthread_mutex_unlock(pthread_mutex_t *m)
6 int waiters = m->_m_waiters;
8 int type = m->_m_type & 15;
9 int priv = (m->_m_type & 128) ^ 128;
11 if (type != PTHREAD_MUTEX_NORMAL) {
12 self = __pthread_self();
13 if ((m->_m_lock&0x7fffffff) != self->tid)
15 if ((type&3) == PTHREAD_MUTEX_RECURSIVE && m->_m_count)
16 return m->_m_count--, 0;
18 self->robust_list.pending = &m->_m_next;
21 volatile void *prev = m->_m_prev;
22 volatile void *next = m->_m_next;
23 *(volatile void *volatile *)prev = next;
24 if (next != &self->robust_list.head) *(volatile void *volatile *)
25 ((char *)next - sizeof(void *)) = prev;
27 cont = a_swap(&m->_m_lock, (type & 8) ? 0x40000000 : 0);
28 if (type != PTHREAD_MUTEX_NORMAL && !priv) {
29 self->robust_list.pending = 0;
32 if (waiters || cont<0)
33 __wake(&m->_m_lock, 1, priv);
37 weak_alias(__pthread_mutex_unlock, pthread_mutex_unlock);