protected override bool handleSpecialDownEvent(Event evt)
{
//We handle the view message differently to handle the situation
//where coordinator itself is leaving
if (evt.Type == Event.VIEW_BCAST_MSG)
{
Stack.NCacheLog.Error("TCP.handleSpecialDownEvent", evt.ToString());
down(new Event(Event.MSG, evt.Arg, evt.Priority));
Stack.NCacheLog.Error("TCP.handleSpecialDownEvent", "view broadcast is complete");
return false;
}
return base.handleSpecialDownEvent(evt);
}
/// <summary>Queues or passes up events. No queue sync. necessary, as this method is never called
/// concurrently.
/// </summary>
public override void up(Event evt)
{
switch (evt.Type)
{
case Event.MSG:
Message msg = (Message) evt.Arg;
object obj = msg.getHeader(HeaderType.GMS);
if (obj != null && obj is Gms.HDR)
{
Gms.HDR hdr = (Gms.HDR)obj;
if (hdr.type == Gms.HDR.VIEW || hdr.type == Gms.HDR.JOIN_RSP)
{
queingLock.AcquireWriterLock(Timeout.Infinite);
try
{
if (Stack.NCacheLog.IsInfoEnabled) Stack.NCacheLog.Info("Queue.Up()", "Received VIEW event, so we start up_queuing");
queueing_up = true; // starts up queuing
}
finally { queingLock.ReleaseWriterLock(); }
}
if(Stack.NCacheLog.IsInfoEnabled) Stack.NCacheLog.Info("Queue.up()", "Message Headers = " + Global.CollectionToString(msg.Headers));
passUp(evt);
return;
}
queingLock.AcquireReaderLock(Timeout.Infinite);
try
{
if (queueing_up)
{
if (Stack.NCacheLog.IsInfoEnabled) Stack.NCacheLog.Info("queued up event " + evt.ToString());
up_vec.Add(evt);
return;
}
}
finally { queingLock.ReleaseReaderLock(); }
break;
}
passUp(evt); // Pass up to the layer above us
}