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 }