| /* |
| * 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(); |
| } |
| } |