1/*
2 * Copyright (c) 2014, 2016, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24import java.awt.Window;
25
26/**
27 * @test
28 * @key headful
29 * @bug 8064468
30 * @author Alexander Scherbatiy
31 * @summary ownedWindowList access requires synchronization in
32 *     Window.setAlwaysOnTop() method
33 * @run main SyncAlwaysOnTopFieldTest
34 */
35public class SyncAlwaysOnTopFieldTest {
36
37    private static final int WINDOWS_COUNT = 200;
38    private static final int STEPS_COUNT = 20;
39
40    public static void main(String[] args) throws Exception {
41        final Window rootWindow = createWindow(null);
42
43        new Thread(() -> {
44            for (int i = 0; i < WINDOWS_COUNT; i++) {
45                createWindow(rootWindow);
46            }
47        }).start();
48
49        boolean alwaysOnTop = true;
50        for (int i = 0; i < STEPS_COUNT; i++) {
51            Thread.sleep(10);
52            rootWindow.setAlwaysOnTop(alwaysOnTop);
53            alwaysOnTop = !alwaysOnTop;
54        }
55    }
56
57    private static Window createWindow(Window parent) {
58        Window window = new Window(parent);
59        window.setSize(200, 200);
60        window.setVisible(true);
61        return window;
62    }
63}
64