public void Enqueue(object item)
{
_queue.EnqueueBlocking(item);
int count = Interlocked.Increment(ref _itemCount);
if ( _overThreshold != null )
{
if ( count == _upperBound )
{
_overThreshold.BeginInvoke(
count, new AsyncCallback(OnAsyncCallEnd),
_overThreshold
);
}
}
}
public object Dequeue()
{
object item = _queue.DequeueBlocking();
int count = Interlocked.Decrement(ref _itemCount);
if ( _underThreshold != null )
{
if ( count == _lowerBound )
{
_underThreshold.BeginInvoke(
count, new AsyncCallback(OnAsyncCallEnd),
_underThreshold
);
}
}
return item;
}