jdk/test/javax/management/loading/ParserInfiniteLoopTest.java
author dbuck
Tue, 18 Aug 2015 04:29:28 -0700
changeset 32417 6859107fc6c3
parent 30376 2ccf2cf7ea48
child 44423 306c020eb154
permissions -rw-r--r--
8133666: OperatingSystemMXBean reports abnormally high machine CPU consumption on Linux Reviewed-by: sla, mgronlun
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/*
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 * Copyright (c) 2005, 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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/*
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 * @test
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 * @bug 5042364
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 * @summary Malformed MLet text file causes infinite loop in parser.
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 * The MLetParser goes into an infinite loop when a tag is not
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 * terminated with the corresponding '>' and an opening '<' for
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 * the subsequent tag is encountered.
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 * @author Luis-Miguel Alventosa
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 * @modules java.management
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 * @run clean ParserInfiniteLoopTest
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 * @run build ParserInfiniteLoopTest
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 * @run main/othervm/timeout=5 ParserInfiniteLoopTest mlet1.html
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 * @run main/othervm/timeout=5 ParserInfiniteLoopTest mlet2.html
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 * @run main/othervm/timeout=5 ParserInfiniteLoopTest mlet3.html
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 */
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import java.io.File;
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import java.io.IOException;
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import javax.management.MBeanServer;
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import javax.management.MBeanServerFactory;
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import javax.management.ObjectName;
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import javax.management.ServiceNotFoundException;
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import javax.management.loading.MLet;
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public class ParserInfiniteLoopTest {
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    public static void main(String[] args) throws Exception {
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        boolean error = false;
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        // Instantiate the MBean server
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        //
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        System.out.println("Create the MBean server");
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        MBeanServer mbs = MBeanServerFactory.createMBeanServer();
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        // Instantiate an MLet
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        //
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        System.out.println("Create the MLet");
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        MLet mlet = new MLet();
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        // Register the MLet MBean with the MBeanServer
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        //
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        System.out.println("Register the MLet MBean");
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        ObjectName mletObjectName = new ObjectName("Test:type=MLet");
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        mbs.registerMBean(mlet, mletObjectName);
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        // Call getMBeansFromURL
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        //
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        System.out.println("Call mlet.getMBeansFromURL(<url>)");
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        String testSrc = System.getProperty("test.src");
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        System.out.println("test.src = " + testSrc);
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        String urlCodebase;
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        if (testSrc.startsWith("/")) {
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            urlCodebase =
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                "file:" + testSrc.replace(File.separatorChar, '/') + "/";
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        } else {
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            urlCodebase =
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                "file:/" + testSrc.replace(File.separatorChar, '/') + "/";
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        }
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        String mletFile = urlCodebase + args[0];
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        System.out.println("MLet File = " + mletFile);
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        try {
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            mlet.getMBeansFromURL(mletFile);
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            System.out.println(
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                "TEST FAILED: Expected ServiceNotFoundException not thrown");
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            error = true;
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        } catch (ServiceNotFoundException e) {
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            if (e.getCause() == null) {
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                System.out.println("TEST FAILED: Got unexpected null cause " +
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                    "in ServiceNotFoundException");
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                error = true;
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            } else if (!(e.getCause() instanceof IOException)) {
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                System.out.println("TEST FAILED: Got unexpected non-null " +
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                    "cause in ServiceNotFoundException");
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                error = true;
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            } else {
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                System.out.println("TEST PASSED: Got expected non-null " +
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                    "cause in ServiceNotFoundException");
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                error = false;
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            }
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            e.printStackTrace(System.out);
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        }
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        // Unregister the MLet MBean
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        //
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        System.out.println("Unregister the MLet MBean");
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        mbs.unregisterMBean(mletObjectName);
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        // Release MBean server
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        //
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        System.out.println("Release the MBean server");
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        MBeanServerFactory.releaseMBeanServer(mbs);
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        // End Test
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        //
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        System.out.println("Bye! Bye!");
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        if (error) System.exit(1);
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    }
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}