/*

 * Copyright (c) 2004, 2018, 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.

 */

package nsk.monitoring.ThreadInfo.isSuspended;

import java.lang.management.*;

import java.io.*;

import nsk.share.*;

public class issuspended001 {

    private static Wicket mainEntrance = new Wicket();

    private static boolean testFailed = false;

    public static void main(String[] argv) {

        System.exit(Consts.JCK_STATUS_BASE + run(argv, System.out));

    }

    public static int run(String[] argv, PrintStream out) {

        ThreadMXBean mbean = ManagementFactory.getThreadMXBean();

        MyThread thread = new MyThread(out);

        thread.start();

        // Wait for MyThread to start

        mainEntrance.waitFor();

        long id = thread.getId();

        ThreadInfo info = mbean.getThreadInfo(id, Integer.MAX_VALUE);

        boolean isSuspended = info.isSuspended();

        if (isSuspended) {

            out.println("Failure 1.");

            out.println("ThreadInfo.isSuspended() returned true, before "

                      + "Thread.suspend() was invoked.");

            testFailed = true;

        }

        thread.suspend();

        info = mbean.getThreadInfo(id, Integer.MAX_VALUE);

        isSuspended = info.isSuspended();

        if (!isSuspended) {

            out.println("Failure 2.");

            out.println("ThreadInfo.isSuspended() returned false, after "

                      + "Thread.suspend() was invoked.");

            testFailed = true;

        }

        thread.resume();

        info = mbean.getThreadInfo(id, Integer.MAX_VALUE);

        isSuspended = info.isSuspended();

        if (isSuspended) {

            out.println("Failure 3.");

            out.println("ThreadInfo.isSuspended() returned true, after "

                      + "Thread.resume() was invoked.");

            testFailed = true;

        }

        thread.die = true;

        if (testFailed)

            out.println("TEST FAILED");

        return (testFailed) ? Consts.TEST_FAILED : Consts.TEST_PASSED;

    }

    private static class MyThread extends Thread {

        final static long WAIT_TIME = 500; // Milliseconds

        Object object = new Object();

        boolean die = false;

        PrintStream out;

        MyThread(PrintStream out) {

            this.out = out;

        }

        public void run() {

            // Notify "main" thread that MyThread has started

            mainEntrance.unlock();

            while (!die) {

                synchronized(object) {

                    try {

                        object.wait(WAIT_TIME);

                    } catch (InterruptedException e) {

                        out.println("Unexpected exception.");

                        e.printStackTrace(out);

                        testFailed = true;

                    }

                } // synchronized

            }

        } // run()

    } // MyThread

}