001    /**
002     * Copyright (c) 2000-2013 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            @Override
023            public void rejectedExecution(
024                    Runnable runnable, ThreadPoolExecutor threadPoolExecutor) {
025    
026                    if (threadPoolExecutor.isShutdown()) {
027                            return;
028                    }
029    
030                    ThreadPoolHandler threadPoolHandler =
031                            threadPoolExecutor.getThreadPoolHandler();
032    
033                    Throwable throwable = null;
034    
035                    threadPoolHandler.beforeExecute(Thread.currentThread(), runnable);
036    
037                    try {
038                            runnable.run();
039                    }
040                    catch (RuntimeException re) {
041                            throwable = re;
042    
043                            throw re;
044                    }
045                    finally {
046                            threadPoolHandler.afterExecute(runnable, throwable);
047                    }
048            }
049    
050    }