1 /*

     2  * Copyright (c) 2016, 2017, 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 

    24 /**

    25  * @test

    26  * @key headful

    27  * @bug 8158325

    28  * @summary Memory leak in com.apple.laf.ScreenMenu: removed JMenuItems are still referenced

    29  * @requires (os.family == "mac")

    30  * @run main/timeout=300/othervm -Xmx16m ScreenMenuMemoryLeakTest

    31  */

    32 

    33 import java.awt.EventQueue;

    34 import java.lang.ref.WeakReference;

    35 import java.lang.reflect.InvocationTargetException;

    36 import java.util.Objects;

    37 

    38 import javax.swing.JFrame;

    39 import javax.swing.JLabel;

    40 import javax.swing.JMenu;

    41 import javax.swing.JMenuBar;

    42 import javax.swing.JMenuItem;

    43 import javax.swing.WindowConstants;

    44 

    45 public class ScreenMenuMemoryLeakTest {

    46 

    47     private static byte[] sBytes;

    48 

    49     private static WeakReference<JMenuItem> sMenuItem;

    50     private static JFrame sFrame;

    51     private static JMenu sMenu;

    52 

    53     public static void main(String[] args) throws InvocationTargetException, InterruptedException {

    54         EventQueue.invokeAndWait(new Runnable() {

    55             @Override

    56             public void run() {

    57                 System.setProperty("apple.laf.useScreenMenuBar", "true");

    58                 showUI();

    59             }

    60         });

    61 

    62         EventQueue.invokeAndWait(new Runnable() {

    63             @Override

    64             public void run() {

    65                 removeMenuItemFromMenu();

    66             }

    67         });

    68         System.gc();

    69         System.runFinalization();

    70         JMenuItem menuItem = sMenuItem.get();

    71         EventQueue.invokeAndWait(new Runnable() {

    72             @Override

    73             public void run() {

    74                 sFrame.dispose();

    75             }

    76         });

    77         if (menuItem != null) {

    78             throw new RuntimeException("The menu item should have been GC-ed");

    79         }

    80     }

    81 

    82     private static void showUI() {

    83         sFrame = new JFrame();

    84         sFrame.add(new JLabel("Some dummy content"));

    85 

    86         JMenuBar menuBar = new JMenuBar();

    87 

    88         sMenu = new JMenu("Menu");

    89         JMenuItem item = new JMenuItem("Item");

    90         sMenu.add(item);

    91 

    92         sMenuItem = new WeakReference<>(item);

    93 

    94         menuBar.add(sMenu);

    95 

    96         sFrame.setJMenuBar(menuBar);

    97 

    98         sFrame.setDefaultCloseOperation(WindowConstants.DO_NOTHING_ON_CLOSE);

    99         sFrame.pack();

   100         sFrame.setVisible(true);

   101     }

   102 

   103     private static void removeMenuItemFromMenu() {

   104         JMenuItem menuItem = sMenuItem.get();

   105         Objects.requireNonNull(menuItem, "The menu item should still be available at this point");

   106         sMenu.remove(menuItem);

   107     }

   108 }