diff options
Diffstat (limited to 'dotnet/Qpid.Client/Client/Util/FlowControlQueue.cs')
-rw-r--r-- | dotnet/Qpid.Client/Client/Util/FlowControlQueue.cs | 98 |
1 files changed, 0 insertions, 98 deletions
diff --git a/dotnet/Qpid.Client/Client/Util/FlowControlQueue.cs b/dotnet/Qpid.Client/Client/Util/FlowControlQueue.cs deleted file mode 100644 index a06de9eac8..0000000000 --- a/dotnet/Qpid.Client/Client/Util/FlowControlQueue.cs +++ /dev/null @@ -1,98 +0,0 @@ -/* - * - * Licensed to the Apache Software Foundation (ASF) under one - * or more contributor license agreements. See the NOTICE file - * distributed with this work for additional information - * regarding copyright ownership. The ASF licenses this file - * to you under the Apache License, Version 2.0 (the - * "License"); you may not use this file except in compliance - * with the License. You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, - * software distributed under the License is distributed on an - * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY - * KIND, either express or implied. See the License for the - * specific language governing permissions and limitations - * under the License. - * - */ -using System; -using System.Collections; -using System.Text; -using System.Threading; -using Apache.Qpid.Collections; -using Apache.Qpid.Common; - -namespace Apache.Qpid.Client.Util -{ - internal delegate void ThresholdMethod(int currentCount); - - /// <summary> - /// Basic bounded queue used to implement prefetching. - /// Notice we do the callbacks here asynchronously to - /// avoid adding more complexity to the channel impl. - /// </summary> - internal class FlowControlQueue - { - private BlockingQueue _queue = new LinkedBlockingQueue(); - private int _itemCount; - private int _lowerBound; - private int _upperBound; - private ThresholdMethod _underThreshold; - private ThresholdMethod _overThreshold; - - public FlowControlQueue( - int lowerBound, - int upperBound, - ThresholdMethod underThreshold, - ThresholdMethod overThreshold - ) - { - _lowerBound = lowerBound; - _upperBound = upperBound; - _underThreshold = underThreshold; - _overThreshold = overThreshold; - } - - public void Enqueue(object item) - { - _queue.EnqueueBlocking(item); - int count = Interlocked.Increment(ref _itemCount); - if ( _overThreshold != null ) - { - if ( count == _upperBound ) - { - _overThreshold.BeginInvoke( - count, new AsyncCallback(OnAsyncCallEnd), - _overThreshold - ); - } - } - } - - public object Dequeue() - { - object item = _queue.DequeueBlocking(); - int count = Interlocked.Decrement(ref _itemCount); - if ( _underThreshold != null ) - { - if ( count == _lowerBound ) - { - _underThreshold.BeginInvoke( - count, new AsyncCallback(OnAsyncCallEnd), - _underThreshold - ); - } - } - return item; - } - - private void OnAsyncCallEnd(IAsyncResult res) - { - ThresholdMethod method = (ThresholdMethod)res.AsyncState; - method.EndInvoke(res); - } - } -} |