| /* |
| * Copyright (c) 2008, 2016, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
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| * |
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| */ |
| |
| /* |
| @test |
| @key headful |
| @bug 6758673 |
| @summary Tests that windows are removed from owner's child windows list |
| @modules java.desktop/java.awt:open |
| @author art: area=awt.toplevel |
| @run main/othervm -mx128m OwnedWindowsLeak |
| */ |
| |
| import java.awt.Frame; |
| import java.awt.Window; |
| import java.lang.ref.WeakReference; |
| import java.lang.reflect.Field; |
| import java.util.Vector; |
| |
| public class OwnedWindowsLeak |
| { |
| public static void main(String[] args) |
| { |
| Frame owner = new Frame("F"); |
| |
| // First, create many windows |
| Vector<WeakReference<Window>> children = |
| new Vector<WeakReference<Window>>(); |
| for (int i = 0; i < 1000; i++) |
| { |
| Window child = new Window(owner); |
| children.add(new WeakReference<Window>(child)); |
| } |
| |
| // Second, make sure all the memory is allocated |
| Vector garbage = new Vector(); |
| while (true) |
| { |
| try |
| { |
| garbage.add(new byte[1000]); |
| } |
| catch (OutOfMemoryError e) |
| { |
| break; |
| } |
| } |
| garbage = null; |
| |
| // Third, make sure all the weak references are null |
| for (WeakReference<Window> ref : children) |
| { |
| if (ref.get() != null) |
| { |
| throw new RuntimeException("Test FAILED: some of child windows are not GCed"); |
| } |
| } |
| |
| // Fourth, make sure owner's children list contains no elements |
| try |
| { |
| Field f = Window.class.getDeclaredField("ownedWindowList"); |
| f.setAccessible(true); |
| Vector ownersChildren = (Vector)f.get(owner); |
| if (ownersChildren.size() > 0) |
| { |
| throw new RuntimeException("Test FAILED: some of the child windows are not removed from owner's children list"); |
| } |
| } |
| catch (NoSuchFieldException z) |
| { |
| System.out.println("Test PASSED: no 'ownedWindowList' field in Window class"); |
| return; |
| } |
| catch (Exception z) |
| { |
| throw new RuntimeException("Test FAILED: unexpected exception", z); |
| } |
| |
| // Test passed |
| System.out.println("Test PASSED"); |
| |
| owner.dispose(); |
| } |
| } |