public ReceiveDataHandler GetReceiveDataHandler(Topic topic)
{
ReceiveDataHandler rdh = this.receiveDataHandlerFactory.GetReceiveDataHandler(topic, this);
if (rdh != null)
{
lock (partInfoData)
{
partInfoData.subscribeTopics.Add(new TopicInfoData(topic));
}
}
return(rdh);
}
/// Protection is not needed since all calls go through the participant which is synched
public ReceiveDataHandler GetReceiveDataHandler(Topic top, Participant participant)
{
// In the case that we use the same port for several topics, we need to find the receiver for the transport::address::port used
string key = MakeKey(top);
if (ReceiveDataHandlers.ContainsKey(key))
{
ReceiveDataHandler rdh = ReceiveDataHandlers[key];
// Check if any of the topics have a sample size larger than MAX_SEGMENT_SIZE
// This will lead to a problem when using the same port, if samples becomes > MAX_SEGMENT_SIZE
if ((rdh.GetSampleMaxSize() > Globals.MAX_SEGMENT_SIZE) || (top.GetSampleMaxSize() > Globals.MAX_SEGMENT_SIZE))
{
if (top.GetTransport().Equals(Topic.TRANSPORT_UDP))
{
Logger.ExceptionLogger.LogMessage("Warning: UDP transport is used with Topics with 'sampleMaxSize' > " + Globals.MAX_SEGMENT_SIZE);
}
else
{
Logger.ExceptionLogger.LogMessage("Warning: Same port (" + top.GetPort() + ") is used with Topics with 'sampleMaxSize' > " + Globals.MAX_SEGMENT_SIZE);
}
}
return(rdh);
}
// Get the local interface, doing a translation from subnet if necessary
string localIF = InetAddress.DoSubnetTranslation(top.GetLocalInterface());
// Didn't exist, create one if transport is known
if ((top.GetTransport().Equals(Topic.TRANSPORT_MC)) || (top.GetTransport().Equals(Topic.TRANSPORT_TCP)))
{
ReceiveDataHandlers.Add(key,
new ReceiveDataHandler(top, participant, ReceiverFactory.CreateReceiver(top, localIF)));
return(ReceiveDataHandlers[key]);
}
else if (top.GetTransport().Equals(Topic.TRANSPORT_UDP))
{
IReceiver rec = ReceiverFactory.CreateReceiver(top, localIF);
ReceiveDataHandlers.Add(key, new ReceiveDataHandler(top, participant, rec));
if (key.Equals(Topic.TRANSPORT_UDP))
{
participant.SetUdpTransportInfo(((UdpReceiver)rec).IP, ((UdpReceiver)rec).Port);
}
return(ReceiveDataHandlers[key]);
}
return(null);
}
public void Start()
{
if (!this.active)
{
timeLastDataForTimeBase = System.DateTime.Now.Ticks;
// A call to "SetDeadlineQoS" enables dead line notification if current timeout is > 0.
SetDeadlineQoS(deadlineTimeout / 10000);
receiveDataHandler = participant.GetReceiveDataHandler(topic);
receiveDataHandler.AddSubscriber(this);
inProcessTransport.AddSubscriber(this);
this.active = true;
}
}
// The ReceiveDataHandler calls our "NotifyNewOPSMessage" from a synchronized context.
// The "RemoveSubscriber" call below on receiveDataHandler is also synchronized in ReceiveDataHandler.
// Both "Stop" and "NotifyNewOPSMessage" can therefore NOT be Synchronized (could lead to deadlock)
// The same scenario is possible for the deadlineNotifier.
// That's why we have commented the synchronize attribute below.
/////[MethodImpl(MethodImplOptions.Synchronized)]
public bool Stop()
{
bool retVal = true;
if (this.active)
{
this.active = false;
deadlineNotifier.Remove(this);
inProcessTransport.RemoveSubscriber(this);
retVal = receiveDataHandler.RemoveSubscriber(this);
receiveDataHandler = null;
participant.ReleaseReceiveDataHandler(topic);
}
return(retVal);
}
/// Protection is not needed since all calls go through the participant which is synched
public void ReleaseReceiveDataHandler(Topic top, Participant participant)
{
// In the case that we use the same port for several topics, we need to find the receiver for the transport::address::port used
string key = MakeKey(top);
if (ReceiveDataHandlers.ContainsKey(key))
{
ReceiveDataHandler rdh = ReceiveDataHandlers[key];
if (rdh.GetNrOfSubscribers() == 0)
{
ReceiveDataHandlers.Remove(key);
if (rdh.GetTransport().Equals(Topic.TRANSPORT_UDP))
{
participant.SetUdpTransportInfo("", 0);
}
}
}
}
// The ReceiveDataHandler calls our "NotifyNewOPSMessage" from a synchronized context.
// The "RemoveSubscriber" call below on receiveDataHandler is also synchronized in ReceiveDataHandler.
// Both "Stop" and "NotifyNewOPSMessage" can therefore NOT be Synchronized (could lead to deadlock)
// The same scenario is possible for the deadlineNotifier.
// That's why we have commented the synchronize attribute below.
/////[MethodImpl(MethodImplOptions.Synchronized)]
public bool Stop()
{
bool retVal = true;
if (this.active)
{
this.active = false;
deadlineNotifier.Remove(this);
inProcessTransport.RemoveSubscriber(this);
retVal = receiveDataHandler.RemoveSubscriber(this);
receiveDataHandler = null;
participant.ReleaseReceiveDataHandler(topic);
}
return retVal;
}
public void Start()
{
if (!this.active)
{
timeLastDataForTimeBase = System.DateTime.Now.Ticks;
// A call to "SetDeadlineQoS" enables dead line notification if current timeout is > 0.
SetDeadlineQoS(deadlineTimeout / 10000);
receiveDataHandler = participant.GetReceiveDataHandler(topic);
receiveDataHandler.AddSubscriber(this);
inProcessTransport.AddSubscriber(this);
this.active = true;
}
}