static void
wake_one_timeout(evutil_socket_t fd, short what, void *arg)
{
struct cond_wait *cw = arg;
EVLOCK_LOCK(cw->lock, 0);
EVTHREAD_COND_SIGNAL(cw->cond);
EVLOCK_UNLOCK(cw->lock, 0);
}
static void
count_incr(void)
{
EVLOCK_LOCK(count_lock, 0);
count++;
EVTHREAD_COND_BROADCAST(count_cond);
EVLOCK_UNLOCK(count_lock, 0);
}
static THREAD_FN
basic_thread(void *arg)
{
struct cond_wait cw;
struct event_base *base = arg;
struct event ev;
int i = 0;
EVTHREAD_ALLOC_LOCK(cw.lock, 0);
EVTHREAD_ALLOC_COND(cw.cond);
assert(cw.lock);
assert(cw.cond);
evtimer_assign(&ev, base, wake_all_timeout, &cw);
for (i = 0; i < NUM_ITERATIONS; i++) {
struct timeval tv;
evutil_timerclear(&tv);
tv.tv_sec = 0;
tv.tv_usec = 3000;
EVLOCK_LOCK(cw.lock, 0);
/* we need to make sure that event does not happen before
* we get to wait on the conditional variable */
assert(evtimer_add(&ev, &tv) == 0);
assert(EVTHREAD_COND_WAIT(cw.cond, cw.lock) == 0);
EVLOCK_UNLOCK(cw.lock, 0);
EVLOCK_LOCK(count_lock, 0);
++count;
EVLOCK_UNLOCK(count_lock, 0);
}
/* exit the loop only if all threads fired all timeouts */
EVLOCK_LOCK(count_lock, 0);
if (count >= NUM_THREADS * NUM_ITERATIONS)
event_base_loopexit(base, NULL);
EVLOCK_UNLOCK(count_lock, 0);
EVTHREAD_FREE_LOCK(cw.lock, 0);
EVTHREAD_FREE_COND(cw.cond);
THREAD_RETURN();
}
static THREAD_FN
wait_for_condition(void *arg)
{
struct alerted_record *rec = arg;
int r;
EVLOCK_LOCK(rec->cond->lock, 0);
if (rec->delay.tv_sec || rec->delay.tv_usec) {
r = EVTHREAD_COND_WAIT_TIMED(rec->cond->cond, rec->cond->lock,
&rec->delay);
} else {
r = EVTHREAD_COND_WAIT(rec->cond->cond, rec->cond->lock);
}
EVLOCK_UNLOCK(rec->cond->lock, 0);
evutil_gettimeofday(&rec->alerted_at, NULL);
if (r == 1)
rec->timed_out = 1;
THREAD_RETURN();
}
static int
count_wait_for(int i, int ms)
{
struct timeval tv;
DWORD elapsed;
int rv = -1;
EVLOCK_LOCK(count_lock, 0);
while (ms > 0 && count != i) {
tv.tv_sec = 0;
tv.tv_usec = ms * 1000;
elapsed = GetTickCount();
EVTHREAD_COND_WAIT_TIMED(count_cond, count_lock, &tv);
elapsed = GetTickCount() - elapsed;
ms -= elapsed;
}
if (count == i)
rv = 0;
EVLOCK_UNLOCK(count_lock, 0);
return rv;
}