/*

 * Copyright (c) 2012, 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.

 */

/*

 * Portions Copyright (c) 2012 IBM Corporation

 */

/**

 * @test

 * @bug 7164191

 * @summary properties.putAll API may fail with ConcurrentModifcationException on multi-thread scenario

 * @modules java.management/sun.management

 * @author Deven You

 */

import java.util.Properties;

import sun.management.Agent;

public class AgentCMETest {

    static Class<?> agentClass;

    /**

     * In sun.management.Agent.loadManagementProperties(), call

     * properties.putAll API may fail with ConcurrentModifcationException if the

     * system properties are modified simultaneously by another thread

     *

     * @param args

     * @throws Exception

     */

    public static void main(String[] args) throws Exception {

        System.out.println("Start...");

        final Properties properties = System.getProperties();

        Thread t1 = new Thread(new Runnable() {

            public void run() {

                for (int i = 0; i < 100; i++) {

                    properties.put(String.valueOf(i), "");

                    try {

                        Thread.sleep(1);

                    } catch (InterruptedException e) {

                        // do nothing

                    }

                }

            }

        });

        t1.start();

        for (int i = 0; i < 10000; i++) {

            Agent.loadManagementProperties();

        }

        System.out.println("Finished...");

    }

}