1/*
2 * Copyright (c) 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
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22 */
23/*
24 * @test
25 * @bug 8158325
26 * @summary Memory leak in com.apple.laf.ScreenMenu: removed JMenuItems are still referenced
27 * @requires (os.family == "mac")
28 * @run main/timeout=300/othervm -Xmx16m ScreenMenuMemoryLeakTest
29 */
30import java.awt.EventQueue;
31import java.lang.ref.WeakReference;
32import java.lang.reflect.InvocationTargetException;
33import java.util.Objects;
34
35import javax.swing.JFrame;
36import javax.swing.JLabel;
37import javax.swing.JMenu;
38import javax.swing.JMenuBar;
39import javax.swing.JMenuItem;
40import javax.swing.WindowConstants;
41
42public class ScreenMenuMemoryLeakTest {
43
44    private static byte[] sBytes;
45
46    private static WeakReference<JMenuItem> sMenuItem;
47    private static JFrame sFrame;
48    private static JMenu sMenu;
49
50    public static void main(String[] args) throws InvocationTargetException, InterruptedException {
51        EventQueue.invokeAndWait(new Runnable() {
52            @Override
53            public void run() {
54                System.setProperty("apple.laf.useScreenMenuBar", "true");
55                showUI();
56            }
57        });
58
59        EventQueue.invokeAndWait(new Runnable() {
60            @Override
61            public void run() {
62                removeMenuItemFromMenu();
63            }
64        });
65        System.gc();
66        System.runFinalization();
67        JMenuItem menuItem = sMenuItem.get();
68        EventQueue.invokeAndWait(new Runnable() {
69            @Override
70            public void run() {
71                sFrame.dispose();
72            }
73        });
74        if (menuItem != null) {
75            throw new RuntimeException("The menu item should have been GC-ed");
76        }
77    }
78
79    private static void showUI() {
80        sFrame = new JFrame();
81        sFrame.add(new JLabel("Some dummy content"));
82
83        JMenuBar menuBar = new JMenuBar();
84
85        sMenu = new JMenu("Menu");
86        JMenuItem item = new JMenuItem("Item");
87        sMenu.add(item);
88
89        sMenuItem = new WeakReference<>(item);
90
91        menuBar.add(sMenu);
92
93        sFrame.setJMenuBar(menuBar);
94
95        sFrame.setDefaultCloseOperation(WindowConstants.DO_NOTHING_ON_CLOSE);
96        sFrame.pack();
97        sFrame.setVisible(true);
98    }
99
100    private static void removeMenuItemFromMenu() {
101        JMenuItem menuItem = sMenuItem.get();
102        Objects.requireNonNull(menuItem, "The menu item should still be available at this point");
103        sMenu.remove(menuItem);
104    }
105}
106