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/*
* 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
* @key headful
* @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();
}
}
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