| /* |
| * Copyright (c) 2011, 2015, 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. |
| */ |
| |
| /* @test |
| * @bug 7068328 |
| * @summary Test if getObjectName handles properly when called by |
| * multiple threads simultaneously. Run in othervm mode to |
| * make sure the object name is not initialized to begin with. |
| * |
| * @run main/othervm GetObjectName |
| */ |
| |
| import java.lang.management.BufferPoolMXBean; |
| import java.lang.management.ManagementFactory; |
| import java.lang.management.PlatformLoggingMXBean; |
| import java.lang.management.PlatformManagedObject; |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.concurrent.ExecutorService; |
| import java.util.concurrent.Executors; |
| import java.util.concurrent.LinkedBlockingQueue; |
| import java.util.concurrent.TimeUnit; |
| |
| public class GetObjectName { |
| private static boolean failed = false; |
| public static void main(String[] args) throws Exception { |
| int tasks = 10000; |
| ExecutorService executor = Executors.newFixedThreadPool(10); |
| submitTasks(executor, tasks); |
| executor.shutdown(); |
| executor.awaitTermination(10, TimeUnit.SECONDS); |
| if (!failed) { |
| System.out.println("Test passed."); |
| } |
| } |
| |
| static void submitTasks(ExecutorService executor, int count) { |
| for (int i=0; i < count && !failed; i++) { |
| executor.execute(new Runnable() { |
| @Override |
| public void run() { |
| List<PlatformManagedObject> mbeans = new ArrayList<>(); |
| mbeans.add(ManagementFactory.getPlatformMXBean(PlatformLoggingMXBean.class)); |
| mbeans.addAll(ManagementFactory.getPlatformMXBeans(BufferPoolMXBean.class)); |
| for (PlatformManagedObject pmo : mbeans) { |
| // Name should not be null |
| if (pmo.getObjectName() == null) { |
| failed = true; |
| throw new RuntimeException("TEST FAILED: getObjectName() returns null"); |
| } |
| } |
| } |
| }); |
| } |
| } |
| } |