/* * * 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.Generic; using System.Threading ; namespace org.apache.qpid.console { /** * Holds state during asynchronous calls to the broker. */ public class SequenceManager { long sequence = 0 ; Dictionary pending = new Dictionary() ; Object lockObject = new Object() ; public SequenceManager() { } public long Reserve(Object data) { long returnValue = 0 ; lock(lockObject) { returnValue = sequence ; sequence += 1 ; pending.Add(returnValue, data) ; } return returnValue; } public Object Release(long seq) { Object returnValue = null ; lock(lockObject) { returnValue = pending[seq] ; pending.Remove(seq) ; } return returnValue ; } } }