void
XLockDisplay(
register Display* dpy)
{
#ifdef XTHREADS
LockDisplay(dpy);
if (dpy->lock)
(*dpy->lock->user_lock_display)(dpy);
/*
* We want the threads in the reply queue to all get out before
* XLockDisplay returns, in case they have any side effects the
* caller of XLockDisplay was trying to protect against.
* XLockDisplay puts itself at the head of the event waiters queue
* to wait for all the replies to come in.
*/
if (dpy->lock && dpy->lock->reply_awaiters) {
struct _XCVList *cvl;
cvl = (*dpy->lock->create_cvl)(dpy);
/* stuff ourselves on the head of the queue */
cvl->next = dpy->lock->event_awaiters;
dpy->lock->event_awaiters = cvl;
while (dpy->lock->reply_awaiters)
ConditionWait(dpy, cvl->cv);
UnlockNextEventReader(dpy); /* pass the signal on */
}
UnlockDisplay(dpy);
#endif
}
void GBASyncProduceAudio(struct GBASync* sync, bool wait) {
if (!sync) {
return;
}
if (sync->audioWait && wait) {
// TODO loop properly in event of spurious wakeups
ConditionWait(&sync->audioRequiredCond, &sync->audioBufferMutex);
}
MutexUnlock(&sync->audioBufferMutex);
}
void GBASyncPostFrame(struct GBASync* sync) {
if (!sync) {
return;
}
MutexLock(&sync->videoFrameMutex);
++sync->videoFramePending;
--sync->videoFrameSkip;
if (sync->videoFrameSkip < 0) {
do {
ConditionWake(&sync->videoFrameAvailableCond);
if (sync->videoFrameWait) {
ConditionWait(&sync->videoFrameRequiredCond, &sync->videoFrameMutex);
}
} while (sync->videoFrameWait && sync->videoFramePending);
}
MutexUnlock(&sync->videoFrameMutex);
}
void WorkerThread::Idle()
{
// decrease the active worker count
AtomicDecrement(&Pool_->ActiveWorkers_);
// were we the last active worker?
if(AtomicRead(&Pool_->ActiveWorkers_) == 1)
// notify the pool that everyone is now idle
ConditionWakeAll(Pool_->AllWorkersIdle_);
// wait until we get woken up by the pool, immediately unlock our locked local mutex
MutexLock(TaskMutex_);
ConditionWait(Pool_->WakeupNotifiction_, TaskMutex_);
MutexUnlock(TaskMutex_);
// increase the number of active workers
AtomicIncrement(&Pool_->ActiveWorkers_);
}
