X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=src%2Fthread%2Fpthread_mutex_timedlock.c;h=9867f3895f65962fe70281510e37b1eaa0b5d1f1;hb=7b384c42b73ca1a1e150b3f255990ec53cedec60;hp=116a8b7b3cd4112fc6e34f88f75537f05291307e;hpb=97a7512b6819014d15c679c8998caa0006d13c29;p=musl diff --git a/src/thread/pthread_mutex_timedlock.c b/src/thread/pthread_mutex_timedlock.c index 116a8b7b..9867f389 100644 --- a/src/thread/pthread_mutex_timedlock.c +++ b/src/thread/pthread_mutex_timedlock.c @@ -1,32 +1,35 @@ #include "pthread_impl.h" -int pthread_mutex_timedlock(pthread_mutex_t *restrict m, const struct timespec *restrict at) +int __pthread_mutex_timedlock(pthread_mutex_t *restrict m, const struct timespec *restrict at) { if ((m->_m_type&15) == PTHREAD_MUTEX_NORMAL && !a_cas(&m->_m_lock, 0, EBUSY)) return 0; - int r, t, priv = (m->_m_type & 128) ^ 128; + int type = m->_m_type; + int r, t, priv = (type & 128) ^ 128; r = pthread_mutex_trylock(m); if (r != EBUSY) return r; int spins = 100; - while (spins-- && m->_m_lock) a_spin(); + while (spins-- && m->_m_lock && !m->_m_waiters) a_spin(); - while ((r=pthread_mutex_trylock(m)) == EBUSY) { - if (!(r=m->_m_lock) || ((r&0x40000000) && (m->_m_type&4))) + while ((r=__pthread_mutex_trylock(m)) == EBUSY) { + if (!(r=m->_m_lock) || ((r&0x40000000) && (type&4))) continue; - if ((m->_m_type&3) == PTHREAD_MUTEX_ERRORCHECK + if ((type&3) == PTHREAD_MUTEX_ERRORCHECK && (r&0x7fffffff) == __pthread_self()->tid) return EDEADLK; a_inc(&m->_m_waiters); t = r | 0x80000000; a_cas(&m->_m_lock, r, t); - r = __timedwait(&m->_m_lock, t, CLOCK_REALTIME, at, 0, 0, priv); + r = __timedwait(&m->_m_lock, t, CLOCK_REALTIME, at, priv); a_dec(&m->_m_waiters); if (r && r != EINTR) break; } return r; } + +weak_alias(__pthread_mutex_timedlock, pthread_mutex_timedlock);