| /* |
| * 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. |
| */ |
| package org.apache.geode.internal.cache.ha; |
| |
| import java.io.IOException; |
| |
| import org.apache.logging.log4j.Logger; |
| |
| import org.apache.geode.cache.CacheException; |
| import org.apache.geode.internal.cache.InternalCache; |
| import org.apache.geode.internal.statistics.StatisticsClock; |
| import org.apache.geode.logging.internal.log4j.api.LogService; |
| |
| /** |
| * Test class for Blocking HA region queue functionalities |
| * |
| * |
| * |
| */ |
| |
| // TODO:Asif: Modify the test to allow working with the new class containing |
| // ReadWrite lock functionality |
| public class TestBlockingHARegionQueue extends TestOnlyHARegionQueue { |
| private static final Logger logger = LogService.getLogger(); |
| |
| /** |
| * Object on which to synchronize/wait |
| */ |
| private Object forWaiting = new Object(); |
| |
| boolean takeFirst = false; |
| |
| boolean takeWhenPeekInProgress = false; |
| |
| public TestBlockingHARegionQueue(String regionName, InternalCache cache, |
| StatisticsClock statisticsClock) |
| throws IOException, ClassNotFoundException, CacheException, InterruptedException { |
| super(regionName, cache, statisticsClock); |
| } |
| |
| /** |
| * Does a put and a notifyAll() multiple threads can possibly be waiting on this queue to put |
| * |
| * |
| * @return boolean whether object was successfully put onto the queue |
| */ |
| |
| @Override |
| public boolean put(Object object) throws CacheException, InterruptedException { |
| boolean putDone = super.put(object); |
| |
| if (takeFirst) { |
| this.take(); |
| this.takeFirst = false; |
| } |
| |
| synchronized (forWaiting) { |
| forWaiting.notifyAll(); |
| } |
| return putDone; |
| } |
| |
| /** |
| * blocking peek. This method will not return till it has acquired a legitimate object from the |
| * queue. |
| * |
| */ |
| |
| @Override |
| public Object peek() throws InterruptedException { |
| Object object = null; |
| while (true) { |
| |
| if (takeWhenPeekInProgress) { |
| try { |
| this.take(); |
| } catch (CacheException ce) { |
| throw new RuntimeException(ce) {}; |
| } |
| this.takeWhenPeekInProgress = false; |
| } |
| object = super.peek(); |
| if (object == null) { |
| synchronized (forWaiting) { |
| object = super.peek(); |
| |
| if (object == null) { |
| boolean interrupted = Thread.interrupted(); |
| try { |
| forWaiting.wait(); |
| } catch (InterruptedException e) { |
| interrupted = true; |
| /** ignore* */ |
| if (logger.isDebugEnabled()) { |
| logger.debug("Interrupted exception while wait for peek", e); |
| } |
| } finally { |
| if (interrupted) { |
| Thread.currentThread().interrupt(); |
| } |
| } |
| } else { |
| break; |
| } |
| } |
| } else { |
| break; |
| } |
| } |
| return object; |
| } |
| } |