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) {
19 if (!(r=m->_m_lock) || ((r&0x40000000) && (type&4)))
21 if ((type&3) == PTHREAD_MUTEX_ERRORCHECK
22 && (r&0x7fffffff) == __pthread_self()->tid)
25 a_inc(&m->_m_waiters);
27 a_cas(&m->_m_lock, r, t);
28 r = __timedwait(&m->_m_lock, t, CLOCK_REALTIME, at, priv);
29 a_dec(&m->_m_waiters);
30 if (r && r != EINTR) break;
35 weak_alias(__pthread_mutex_timedlock, pthread_mutex_timedlock);