From a113434cd68ce30642c4995b1caadcd084be6f09 Mon Sep 17 00:00:00 2001 From: Rich Felker Date: Wed, 6 Apr 2011 12:24:34 -0400 Subject: major semaphore improvements (performance and correctness) 1. make sem_[timed]wait interruptible by signals, per POSIX 2. keep a waiter count in order to avoid unnecessary futex wake syscalls --- src/thread/pthread_cond_timedwait.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'src/thread/pthread_cond_timedwait.c') diff --git a/src/thread/pthread_cond_timedwait.c b/src/thread/pthread_cond_timedwait.c index 1439aace..7a19fc55 100644 --- a/src/thread/pthread_cond_timedwait.c +++ b/src/thread/pthread_cond_timedwait.c @@ -16,7 +16,8 @@ int pthread_cond_timedwait(pthread_cond_t *c, pthread_mutex_t *m, const struct t if ((r=pthread_mutex_unlock(m))) return r; CANCELPT_BEGIN; - e = __timedwait(&c->_c_block, 1, c->_c_clock, ts, 0); + do e = __timedwait(&c->_c_block, 1, c->_c_clock, ts, 0); + while (e == EINTR); CANCELPT_END; pthread_cleanup_pop(0); -- cgit v1.2.1