/*

 * Copyright (c) 2002, 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

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 */

package nsk.jdb.threadgroup.threadgroup002;

import nsk.share.*;

import nsk.share.jpda.*;

import nsk.share.jdb.*;

import java.io.*;

/* This is debuggee aplication */

public class threadgroup002a {

    public static void main(String args[]) {

        threadgroup002a _threadgroup002a = new threadgroup002a();

        System.exit(threadgroup002.JCK_STATUS_BASE + _threadgroup002a.runIt(args, System.out));

    }

    static void lastBreak () {}

    static int numThreadGroups = 3;

    static int numThreads      = 15;

    static Object waitnotify   = new Object();

    final static String THREADGROUP_NAME = "MyThreadGroup#";

    public int runIt(String args[], PrintStream out) {

        JdbArgumentHandler argumentHandler = new JdbArgumentHandler(args);

        Log log = new Log(out, argumentHandler);

        ThreadGroup tgHolder[] = new ThreadGroup[numThreadGroups];

        Thread holder [] = new Thread[numThreads];

        Lock lock = new Lock();

        for (int i = 0; i < numThreadGroups ; i++ )

            tgHolder[i] = new ThreadGroup(THREADGROUP_NAME + i);

        try {

            lock.setLock();

            int factor = numThreads / numThreadGroups;

            int k;

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

                for (int j = 0; j < factor ; j++) {

                    k = i * factor + j;

                    holder[k] = new MyThread(lock, tgHolder[i], "MyThread#");

                    synchronized (waitnotify) {

                        holder[k].start();

                        waitnotify.wait();

                    }

                }

            }

        } catch (Exception e) {

            System.err.println("TEST ERROR: Caught unexpected Exception while waiting in main thread: " +

                e.getMessage());

            System.exit(threadgroup002.FAILED);

        }

        lastBreak();   // When jdb stops here, there should be 5 running MyThreads.

        lock.releaseLock();

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

            if (holder[i].isAlive()) {

                try {

                    holder[i].join(argumentHandler.getWaitTime() * 60000);

                } catch (InterruptedException e) {

                    throw new Failure("Unexpected InterruptedException catched while waiting for join of: " + holder[i]);

                }

            }

        }

        log.display("Debuggee PASSED");

        return threadgroup002.PASSED;

    }

}

class Lock {

    boolean lockSet;

    synchronized void setLock() throws InterruptedException {

        while (lockSet == true)

            wait();

        lockSet = true;

    }

    synchronized void releaseLock() {

        if (lockSet == true) {

            lockSet = false;

            notify();

        }

    }

}

class MyThread extends Thread {

    Lock lock;

    MyThread (Lock l, ThreadGroup group, String name) {

        super(group, name);

        this.lock = l;

    }

    public void run() {

        synchronized (threadgroup002a.waitnotify) {

            threadgroup002a.waitnotify.notifyAll();

        }

        try {

            lock.setLock();

        } catch(Exception e) {

            System.err.println("TEST ERROR: Caught unexpected Exception while waiting in MyThread: " +

                e.getMessage());

            System.exit(threadgroup002.FAILED);

        }

        lock.releaseLock();

    }

}