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 21 * questions. 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 */ 30 import java.awt.EventQueue; 31 import java.lang.ref.WeakReference; 32 import java.lang.reflect.InvocationTargetException; 33 import java.util.Objects; 34 35 import javax.swing.JFrame; 36 import javax.swing.JLabel; 37 import javax.swing.JMenu; 38 import javax.swing.JMenuBar; 39 import javax.swing.JMenuItem; 40 import javax.swing.WindowConstants; 41 42 public 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 }