public bool Dequeue(TimeSpan timeout, out T value)
{
bool flag;
InputQueue <T> .WaitQueueReader waitQueueReader = null;
InputQueue <T> .Item item = new InputQueue <T> .Item();
lock (this.ThisLock)
{
if (this.queueState == InputQueue <T> .QueueState.Open)
{
if (!this.itemQueue.HasAvailableItem)
{
waitQueueReader = new InputQueue <T> .WaitQueueReader(this);
this.readerQueue.Enqueue(waitQueueReader);
}
else
{
item = this.itemQueue.DequeueAvailableItem();
}
}
else if (this.queueState != InputQueue <T> .QueueState.Shutdown)
{
value = default(T);
flag = true;
return(flag);
}
else if (this.itemQueue.HasAvailableItem)
{
item = this.itemQueue.DequeueAvailableItem();
}
else if (!this.itemQueue.HasAnyItem)
{
value = default(T);
flag = true;
return(flag);
}
else
{
waitQueueReader = new InputQueue <T> .WaitQueueReader(this);
this.readerQueue.Enqueue(waitQueueReader);
}
if (waitQueueReader != null)
{
return(waitQueueReader.Wait(timeout, out value));
}
InputQueue <T> .InvokeDequeuedCallback(item.DequeuedCallback);
value = item.GetValue();
return(true);
}
return(flag);
}
public IAsyncResult BeginDequeue(TimeSpan timeout, AsyncCallback callback, object state)
{
IAsyncResult asyncResult;
InputQueue <T> .Item item = new InputQueue <T> .Item();
lock (this.ThisLock)
{
if (this.queueState == InputQueue <T> .QueueState.Open)
{
if (!this.itemQueue.HasAvailableItem)
{
InputQueue <T> .AsyncQueueReader asyncQueueReader = new InputQueue <T> .AsyncQueueReader(this, timeout, callback, state);
this.readerQueue.Enqueue(asyncQueueReader);
asyncResult = asyncQueueReader;
return(asyncResult);
}
else
{
item = this.itemQueue.DequeueAvailableItem();
}
}
else if (this.queueState == InputQueue <T> .QueueState.Shutdown)
{
if (this.itemQueue.HasAvailableItem)
{
item = this.itemQueue.DequeueAvailableItem();
}
else if (this.itemQueue.HasAnyItem)
{
InputQueue <T> .AsyncQueueReader asyncQueueReader1 = new InputQueue <T> .AsyncQueueReader(this, timeout, callback, state);
this.readerQueue.Enqueue(asyncQueueReader1);
asyncResult = asyncQueueReader1;
return(asyncResult);
}
}
InputQueue <T> .InvokeDequeuedCallback(item.DequeuedCallback);
return(new CompletedAsyncResult <T>(item.GetValue(), callback, state));
}
return(asyncResult);
}