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))
9 int r, t, priv = (m->_m_type & 128) ^ 128;
11 r = pthread_mutex_trylock(m);
12 if (r != EBUSY) return r;
15 while (spins-- && m->_m_lock && !m->_m_waiters) a_spin();
17 while ((r=pthread_mutex_trylock(m)) == EBUSY) {
18 if (!(r=m->_m_lock) || ((r&0x40000000) && (m->_m_type&4)))
20 if ((m->_m_type&3) == PTHREAD_MUTEX_ERRORCHECK
21 && (r&0x7fffffff) == __pthread_self()->tid)
24 a_inc(&m->_m_waiters);
26 a_cas(&m->_m_lock, r, t);
27 r = __timedwait(&m->_m_lock, t, CLOCK_REALTIME, at, priv);
28 a_dec(&m->_m_waiters);
29 if (r && r != EINTR) break;
34 weak_alias(__pthread_mutex_timedlock, pthread_mutex_timedlock);