77 lines
3.0 KiB
Java
77 lines
3.0 KiB
Java
/*
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* Copyright (c) 2011, 2015, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/* @test
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* @bug 7068328
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* @summary Test if getObjectName handles properly when called by
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* multiple threads simultaneously. Run in othervm mode to
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* make sure the object name is not initialized to begin with.
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*
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* @run main/othervm GetObjectName
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*/
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import java.lang.management.BufferPoolMXBean;
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import java.lang.management.ManagementFactory;
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import java.lang.management.PlatformLoggingMXBean;
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import java.lang.management.PlatformManagedObject;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.concurrent.ExecutorService;
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import java.util.concurrent.Executors;
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import java.util.concurrent.LinkedBlockingQueue;
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import java.util.concurrent.TimeUnit;
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public class GetObjectName {
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private static boolean failed = false;
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public static void main(String[] args) throws Exception {
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int tasks = 10000;
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ExecutorService executor = Executors.newFixedThreadPool(10);
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submitTasks(executor, tasks);
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executor.shutdown();
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executor.awaitTermination(10, TimeUnit.SECONDS);
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if (!failed) {
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System.out.println("Test passed.");
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}
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}
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static void submitTasks(ExecutorService executor, int count) {
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for (int i=0; i < count && !failed; i++) {
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executor.execute(new Runnable() {
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@Override
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public void run() {
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List<PlatformManagedObject> mbeans = new ArrayList<>();
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mbeans.add(ManagementFactory.getPlatformMXBean(PlatformLoggingMXBean.class));
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mbeans.addAll(ManagementFactory.getPlatformMXBeans(BufferPoolMXBean.class));
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for (PlatformManagedObject pmo : mbeans) {
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// Name should not be null
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if (pmo.getObjectName() == null) {
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failed = true;
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throw new RuntimeException("TEST FAILED: getObjectName() returns null");
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}
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}
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}
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});
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}
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}
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}
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