public IAsyncResult BeginPoll(string device, string operation, AsyncCallback callback, object state)
{
var pollCompletionSource = new PollCompletionSource(device, operation, callback, state);
NotificationListener.Create().Register(device, operation, pollCompletionSource);
return(pollCompletionSource.Task);
}
public void Register(string device, string operation, PollCompletionSource pollCompletionSource)
{
try
{
_disposing.EnterReadLock();
if (_disposed || _cancellationSource.IsCancellationRequested)
{
throw new ObjectDisposedException(GetType().FullName);
}
_devices.AddOrUpdate(string.Format(FORMAT_KEY_DEVICE, device, operation), pollCompletionSource,
(ekey, epcs) =>
{
epcs.Done();
return(pollCompletionSource);
});
}
finally
{
_disposing.ExitReadLock();
}
}