Notification* TimedNotificationQueue::waitDequeueNotification()
{
for (;;)
{
_mutex.lock();
NfQueue::iterator it = _nfQueue.begin();
if (it != _nfQueue.end())
{
_mutex.unlock();
Clock::ClockDiff sleep = -it->first.elapsed();
if (sleep <= 0)
{
return dequeueOne(it).duplicate();
}
else if (!wait(sleep))
{
return dequeueOne(it).duplicate();
}
else continue;
}
else
{
_mutex.unlock();
}
_nfAvailable.wait();
}
}
void PriorityNotificationQueue::dispatch(NotificationCenter& notificationCenter)
{
FastMutex::ScopedLock lock(_mutex);
Notification::Ptr pNf = dequeueOne();
while (pNf)
{
notificationCenter.postNotification(pNf);
pNf = dequeueOne();
}
}
Notification* PriorityNotificationQueue::waitDequeueNotification(long milliseconds)
{
Notification::Ptr pNf;
WaitInfo* pWI = 0;
{
FastMutex::ScopedLock lock(_mutex);
pNf = dequeueOne();
if (pNf) return pNf.duplicate();
pWI = new WaitInfo;
_waitQueue.push_back(pWI);
}
if (pWI->nfAvailable.tryWait(milliseconds))
{
pNf = pWI->pNf;
}
else
{
FastMutex::ScopedLock lock(_mutex);
pNf = pWI->pNf;
for (WaitQueue::iterator it = _waitQueue.begin(); it != _waitQueue.end(); ++it)
{
if (*it == pWI)
{
_waitQueue.erase(it);
break;
}
}
}
delete pWI;
return pNf.duplicate();
}
Notification* TimedNotificationQueue::waitDequeueNotification(long milliseconds)
{
while (milliseconds >= 0)
{
_mutex.lock();
NfQueue::iterator it = _nfQueue.begin();
if (it != _nfQueue.end())
{
_mutex.unlock();
Clock now;
Clock::ClockDiff sleep = it->first - now;
if (sleep <= 0)
{
return dequeueOne(it).duplicate();
}
else if (sleep <= 1000*Clock::ClockDiff(milliseconds))
{
if (!wait(sleep))
{
return dequeueOne(it).duplicate();
}
else
{
milliseconds -= static_cast<long>((now.elapsed() + 999)/1000);
continue;
}
}
}
else
{
_mutex.unlock();
}
if (milliseconds > 0)
{
Clock now;
_nfAvailable.tryWait(milliseconds);
milliseconds -= static_cast<long>((now.elapsed() + 999)/1000);
}
else return 0;
}
return 0;
}
Notification* PriorityNotificationQueue::waitDequeueNotification()
{
Notification::Ptr pNf;
WaitInfo* pWI = 0;
{
FastMutex::ScopedLock lock(_mutex);
pNf = dequeueOne();
if (pNf) return pNf.duplicate();
pWI = new WaitInfo;
_waitQueue.push_back(pWI);
}
pWI->nfAvailable.wait();
pNf = pWI->pNf;
delete pWI;
return pNf.duplicate();
}
Notification* PriorityNotificationQueue::dequeueNotification()
{
FastMutex::ScopedLock lock(_mutex);
return dequeueOne().duplicate();
}
Notification* NotificationQueue::dequeueNotification()
{
FastMutex::ScopedLock lock(_mutex);
return dequeueOne();
}
