HRESULT ListenerRecord::enqueue (IEvent* aEvent)
{
AssertMsg(!mActive, ("must be passive\n"));
// put an event the queue
::RTCritSectEnter(&mcsQLock);
// If there was no events reading from the listener for the long time,
// and events keep coming, or queue is oversized we shall unregister this listener.
uint64_t sinceRead = RTTimeMilliTS() - mLastRead;
size_t queueSize = mQueue.size();
if ( (queueSize > 1000) || ((queueSize > 500) && (sinceRead > 60 * 1000)))
{
::RTCritSectLeave(&mcsQLock);
return E_ABORT;
}
if (queueSize != 0 && mQueue.back() == aEvent)
/* if same event is being pushed multiple times - it's reusable event and
we don't really need multiple instances of it in the queue */
(void)aEvent;
else
mQueue.push_back(aEvent);
::RTCritSectLeave(&mcsQLock);
// notify waiters
::RTSemEventSignal(mQEvent);
return S_OK;
}
HRESULT ListenerRecord::enqueue(IEvent *aEvent)
{
AssertMsg(!mActive, ("must be passive\n"));
// put an event the queue
::RTCritSectEnter(&mcsQLock);
// If there was no events reading from the listener for the long time,
// and events keep coming, or queue is oversized we shall unregister this listener.
uint64_t sinceRead = RTTimeMilliTS() - mLastRead;
size_t queueSize = mQueue.size();
if (queueSize > 1000 || (queueSize > 500 && sinceRead > 60 * 1000))
{
::RTCritSectLeave(&mcsQLock);
return E_ABORT;
}
RTSEMEVENT hEvt = mQEvent;
if (queueSize != 0 && mQueue.back() == aEvent)
/* if same event is being pushed multiple times - it's reusable event and
we don't really need multiple instances of it in the queue */
hEvt = NIL_RTSEMEVENT;
else if (hEvt != NIL_RTSEMEVENT) /* don't bother queuing after shutdown */
{
mQueue.push_back(aEvent);
ASMAtomicIncS32(&mQEventBusyCnt);
}
::RTCritSectLeave(&mcsQLock);
// notify waiters unless we've been shut down.
if (hEvt != NIL_RTSEMEVENT)
{
::RTSemEventSignal(hEvt);
ASMAtomicDecS32(&mQEventBusyCnt);
}
return S_OK;
}