1 #include "pthread_impl.h"
3 int __pthread_mutex_timedlock(pthread_mutex_t *restrict m, const struct timespec *restrict at)
5 if ((m->_m_type&15) == PTHREAD_MUTEX_NORMAL
6 && !a_cas(&m->_m_lock, 0, EBUSY))
10 int r, t, priv = (type & 128) ^ 128;
12 r = pthread_mutex_trylock(m);
13 if (r != EBUSY) return r;
16 while (spins-- && m->_m_lock && !m->_m_waiters) a_spin();
18 while ((r=__pthread_mutex_trylock(m)) == EBUSY) {
20 int own = r & 0x3fffffff;
21 if (!own && (!r || (type&4)))
23 if ((type&3) == PTHREAD_MUTEX_ERRORCHECK
24 && own == __pthread_self()->tid)
27 a_inc(&m->_m_waiters);
29 a_cas(&m->_m_lock, r, t);
30 r = __timedwait(&m->_m_lock, t, CLOCK_REALTIME, at, priv);
31 a_dec(&m->_m_waiters);
32 if (r && r != EINTR) break;
37 weak_alias(__pthread_mutex_timedlock, pthread_mutex_timedlock);