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/* * Copyright (c) %YEARS% Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ /* * Portions Copyright (c) %YEARS% IBM Corporation */ import java.lang.management.BufferPoolMXBean; import java.lang.management.ManagementFactory; import java.util.List; import java.util.concurrent.LinkedBlockingQueue; import java.util.concurrent.ThreadPoolExecutor; import java.util.concurrent.TimeUnit; public class BufferPoolMXBeanObjectNameStressTest { /** * This test exercises the BufferPoolMXBean getObjectName() method to ensure * it functions under load. * The getObjectName() method uses lazy instantiation which could fail if * accessed via multiple threads. * * */ public static void main(String[] args) throws Exception { final ThreadPoolExecutor pool = new ThreadPoolExecutor(10,100,10,TimeUnit.SECONDS,new LinkedBlockingQueue()); for(int i=0;i<10000;i++) { pool.execute(new Runnable() { @Override public void run() { List byteBufferPools = ManagementFactory.getPlatformMXBeans(BufferPoolMXBean.class); for (BufferPoolMXBean bean: byteBufferPools) { // Name should not be blank or null if(bean.getObjectName()==null) { System.out.println("TEST FAILED: bean name is null"); System.exit(-1); } if(bean.getObjectName().equals("")) { System.out.println("TEST FAILED: bean name is empty"); System.exit(-1); } } }}); } pool.awaitTermination(1,TimeUnit.SECONDS); System.out.println("TEST PASSED"); } }