001    /**
002     * Copyright (c) 2000-2012 Liferay, Inc. All rights reserved.
003     *
004     * This library is free software; you can redistribute it and/or modify it under
005     * the terms of the GNU Lesser General Public License as published by the Free
006     * Software Foundation; either version 2.1 of the License, or (at your option)
007     * any later version.
008     *
009     * This library is distributed in the hope that it will be useful, but WITHOUT
010     * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
011     * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
012     * details.
013     */
014    
015    package com.liferay.portal.kernel.concurrent;
016    
017    /**
018     * @author Shuyang Zhou
019     */
020    public class CallerRunsPolicy implements RejectedExecutionHandler {
021    
022            public void rejectedExecution(
023                    Runnable runnable, ThreadPoolExecutor threadPoolExecutor) {
024    
025                    if (threadPoolExecutor.isShutdown()) {
026                            return;
027                    }
028    
029                    ThreadPoolHandler threadPoolHandler =
030                            threadPoolExecutor.getThreadPoolHandler();
031    
032                    Throwable throwable = null;
033    
034                    threadPoolHandler.beforeExecute(Thread.currentThread(), runnable);
035    
036                    try {
037                            runnable.run();
038                    }
039                    catch (RuntimeException re) {
040                            throwable = re;
041    
042                            throw re;
043                    }
044                    finally {
045                            threadPoolHandler.afterExecute(runnable, throwable);
046                    }
047            }
048    
049    }