protected void OnNewWorkerAvailable(WorkerProcess worker)
{
lock (this.workers)
{
worker.Queue = this;
workers.Add(worker);
// offload draining the IO queues to this new worker on a different thread
ActionItem.Schedule(dispatchToNewWorkerCallback, worker);
}
}
internal virtual void Unregister(WorkerProcess worker)
{
Debug.Print("MessageQueue.Unregister() worker: " + worker.ProcessId);
lock (registry)
{
Fx.Assert(object.Equals(this, worker.Queue), "MessageQueue.Unregister() cannot unregister a worker registered with a queue different than this.");
workers.Remove(worker);
Debug.Print("MessageQueue.Unregister() left with workers: " + workers.Count);
if (workers.Count == 0)
{
OnUnregisterLastWorker();
}
}
}
internal static ListenerExceptionStatus Register(BaseUriWithWildcard path, WorkerProcess worker)
{
MessageQueue queue = null;
lock (registry)
{
if (registry.TryGetValue(path, out queue))
{
if (!queue.CanShare)
{
return(ListenerExceptionStatus.ConflictingRegistration);
}
}
else
{
queue = new MessageQueue();
ListenerExceptionStatus status = ListenerExceptionStatus.FailedToListen;
try
{
status = queue.Register(path);
}
catch (Exception exception)
{
if (Fx.IsFatal(exception))
{
throw;
}
if (DiagnosticUtility.ShouldTraceError)
{
ListenerTraceUtility.TraceEvent(TraceEventType.Error, ListenerTraceCode.RoutingTableCannotListen, SR.GetString(SR.TraceCodeRoutingTableCannotListen), new StringTraceRecord("Path", path.ToString()), null, exception);
}
}
if (status != ListenerExceptionStatus.Success)
{
// not setting the worker.queue is not a problem, since we can't use this WorkerProcess
return(status);
}
registry.Add(path, queue);
}
}
queue.OnNewWorkerAvailable(worker);
return(ListenerExceptionStatus.Success);
}
void EnqueueWorkerAndDispatch(WorkerProcess worker, bool canDispatchOnThisThread)
{
lock (SessionLock)
{
sessionWorkers.Enqueue(worker);
}
if (canDispatchOnThisThread)
{
DispatchSession();
}
else
{
ActionItem.Schedule(dispatchSessionCallback, this);
}
}
void DispatchSession()
{
for (;;)
{
ListenerSessionConnection session = null;
lock (SessionLock)
{
if (sessionMessages.Count > 0)
{
WorkerProcess worker = null;
while (sessionWorkers.Count > 0)
{
worker = sessionWorkers.Dequeue();
if (worker.IsRegistered)
{
break;
}
worker = null;
}
if (worker == null)
{
// There is no more active worker. So break the loop.
break;
}
// For better performance, we may want to check whether the message has been timed out in the future.
session = sessionMessages.Dequeue();
session.WorkerProcess = worker;
}
}
if (session == null)
{
// There is mo more message left. So break the loop.
break;
}
StartDispatchSession(session);
}
}
static void DispatchToNewWorkerCallback(object state)
{
WorkerProcess worker = state as WorkerProcess;
worker.Queue.EnqueueWorkerAndDispatch(worker, true);
}
internal static ListenerExceptionStatus Register(int listenerChannelId, Guid token, WorkerProcess worker)
{
Debug.Print("ActivatedMessageQueue.Register() listenerChannelId: " + listenerChannelId + " token: " + token + " worker: " + worker.ProcessId);
ActivatedMessageQueue thisPtr = null;
lock (listenerChannelIds)
{
thisPtr = Find(listenerChannelId);
if (thisPtr == null)
{
// this is an error.
return ListenerExceptionStatus.InvalidArgument;
}
if (!token.Equals(thisPtr.listenerChannelContext.Token))
{
return ListenerExceptionStatus.InvalidArgument;
}
}
thisPtr.OnListenerChannelConnected();
thisPtr.OnNewWorkerAvailable(worker);
return ListenerExceptionStatus.Success;
}
internal virtual void Unregister(WorkerProcess worker)
{
Debug.Print("MessageQueue.Unregister() worker: " + worker.ProcessId);
lock (registry)
{
Fx.Assert(object.Equals(this, worker.Queue), "MessageQueue.Unregister() cannot unregister a worker registered with a queue different than this.");
workers.Remove(worker);
Debug.Print("MessageQueue.Unregister() left with workers: " + workers.Count);
if (workers.Count == 0)
{
OnUnregisterLastWorker();
}
}
}
internal static ListenerExceptionStatus Register(BaseUriWithWildcard path, WorkerProcess worker)
{
MessageQueue queue = null;
lock (registry)
{
if (registry.TryGetValue(path, out queue))
{
if (!queue.CanShare)
{
return ListenerExceptionStatus.ConflictingRegistration;
}
}
else
{
queue = new MessageQueue();
ListenerExceptionStatus status = ListenerExceptionStatus.FailedToListen;
try
{
status = queue.Register(path);
}
catch (Exception exception)
{
if (Fx.IsFatal(exception))
{
throw;
}
if (DiagnosticUtility.ShouldTraceError)
{
ListenerTraceUtility.TraceEvent(TraceEventType.Error, ListenerTraceCode.RoutingTableCannotListen, SR.GetString(SR.TraceCodeRoutingTableCannotListen), new StringTraceRecord("Path", path.ToString()), null, exception);
}
}
if (status != ListenerExceptionStatus.Success)
{
// not setting the worker.queue is not a problem, since we can't use this WorkerProcess
return status;
}
registry.Add(path, queue);
}
}
queue.OnNewWorkerAvailable(worker);
return ListenerExceptionStatus.Success;
}
protected void OnNewWorkerAvailable(WorkerProcess worker)
{
lock (this.workers)
{
worker.Queue = this;
workers.Add(worker);
// offload draining the IO queues to this new worker on a different thread
ActionItem.Schedule(dispatchToNewWorkerCallback, worker);
}
}
void EnqueueWorkerAndDispatch(WorkerProcess worker, bool canDispatchOnThisThread)
{
lock (SessionLock)
{
sessionWorkers.Enqueue(worker);
}
if (canDispatchOnThisThread)
{
DispatchSession();
}
else
{
ActionItem.Schedule(dispatchSessionCallback, this);
}
}
internal static ListenerExceptionStatus Register(int listenerChannelId, Guid token, WorkerProcess worker)
{
Debug.Print("ActivatedMessageQueue.Register() listenerChannelId: " + listenerChannelId + " token: " + token + " worker: " + worker.ProcessId);
ActivatedMessageQueue thisPtr = null;
lock (listenerChannelIds)
{
thisPtr = Find(listenerChannelId);
if (thisPtr == null)
{
// this is an error.
return(ListenerExceptionStatus.InvalidArgument);
}
if (!token.Equals(thisPtr.listenerChannelContext.Token))
{
return(ListenerExceptionStatus.InvalidArgument);
}
}
thisPtr.OnListenerChannelConnected();
thisPtr.OnNewWorkerAvailable(worker);
return(ListenerExceptionStatus.Success);
}
