jdk/test/javax/management/remote/mandatory/connection/MultiOpenCloseTest.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) 2003, 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 CloseUnconnectedTest.java 1.1 03/08/28
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 * @bug 1234567
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 * @summary Open, connect then close multi-connectors.
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 * @author Shanliang JIANG
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 * @modules java.management
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 * @run clean MultiOpenCloseTest
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 * @run build MultiOpenCloseTest
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 * @run main MultiOpenCloseTest
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 */
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/*
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 * Test that we can create a connection, call connect() on it,
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 * then close it without anything surprising happening.
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 */
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import java.net.MalformedURLException;
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import java.io.IOException;
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import javax.management.*;
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import javax.management.remote.*;
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public class MultiOpenCloseTest {
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    private static final String[] protocols = {"rmi", "iiop", "jmxmp"};
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    private static final MBeanServer mbs = MBeanServerFactory.createMBeanServer();
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    public static void main(String[] args) {
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        System.out.println("Open, connect then close multi-connectors.");
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        boolean ok = true;
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        for (int i = 0; i < protocols.length; i++) {
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            try {
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                if (!test(protocols[i])) {
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                    System.out.println("Test failed for " + protocols[i]);
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                    ok = false;
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                } else {
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                    System.out.println("Test successed for " + protocols[i]);
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                }
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            } catch (Exception e) {
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                System.out.println("Test failed for " + protocols[i]);
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                e.printStackTrace(System.out);
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                ok = false;
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            }
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        }
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        if (ok) {
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            System.out.println("Test passed");
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            return;
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        } else {
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            System.out.println("TEST FAILED");
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            System.exit(1);
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        }
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    }
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    private static boolean test(String proto)
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            throws Exception {
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        System.out.println("Test for protocol " + proto);
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        JMXServiceURL u = new JMXServiceURL(proto, null, 0);
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        JMXConnectorServer s;
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        try {
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            s = JMXConnectorServerFactory.newJMXConnectorServer(u, null, mbs);
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        } catch (MalformedURLException e) {
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            System.out.println("Skipping unsupported URL " + u);
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            return true;
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        }
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        s.start();
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        JMXServiceURL a = s.getAddress();
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        final int MAX_ITERS = 10;
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        System.out.println("Looping for " + MAX_ITERS + "iterations...");
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        for (int i=0; i<MAX_ITERS; i++) {
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            JMXConnector c = JMXConnectorFactory.newJMXConnector(a, null);
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            c.connect(null);
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            c.close();
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        }
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        JMXConnector[] cs = new JMXConnector[MAX_ITERS];
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        for (int i=0; i<MAX_ITERS; i++) {
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            cs[i] = JMXConnectorFactory.newJMXConnector(a, null);
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            cs[i].connect(null);
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        }
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        for (int i=0; i<MAX_ITERS; i++) {
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            cs[i].close();
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        }
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        try {
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            Thread.sleep(100);
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        } catch (Exception ee) {
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            // should not
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        }
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        // check state
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        for (int i=0; i<MAX_ITERS; i++) {
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            try {
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                cs[i].getMBeanServerConnection(null);
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                // no exception
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                System.out.println("Did not get an IOException as expected, failed to close a client.");
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                return false;
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            } catch (IOException ioe) {
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                // as expected
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            }
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        }
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        s.stop();
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        return true;
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    }
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}