/*

 * Copyright (c) 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.

 */

import java.awt.Frame;

import java.awt.GraphicsConfiguration;

import java.awt.Window;

import static java.util.concurrent.TimeUnit.MINUTES;

import static java.util.concurrent.TimeUnit.NANOSECONDS;

/**

 * @test

 * @bug 8138764

 */

public final class TreeLockDeadlock extends Frame {

    @Override

    public synchronized GraphicsConfiguration getGraphicsConfiguration() {

        return super.getGraphicsConfiguration();

    }

    @Override

    public synchronized void reshape(int x, int y, int width, int height) {

        super.reshape(x, y, width, height);

    }

    @Override

    public synchronized float getOpacity() {

        return super.getOpacity();

    }

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

        final Window window = new TreeLockDeadlock();

        window.setSize(300, 300);

        test(window);

    }

    private static void test(final Window window) throws Exception {

        final long start = System.nanoTime();

        final long end = start + NANOSECONDS.convert(1, MINUTES);

        final Runnable r1 = () -> {

            while (System.nanoTime() < end) {

                window.setBounds(window.getBounds());

            }

        };

        final Runnable r2 = () -> {

            while (System.nanoTime() < end) {

                window.getGraphicsConfiguration();

                window.getOpacity();

            }

        };

        final Thread t1 = new Thread(r1);

        final Thread t2 = new Thread(r1);

        final Thread t3 = new Thread(r2);

        final Thread t4 = new Thread(r2);

        t1.start();

        t2.start();

        t3.start();

        t4.start();

        t1.join();

        t2.join();

        t3.join();

        t4.join();

    }

}