1 /*
   2  * Copyright (c) 2013, 2015, 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  * @bug 8013563
  27  * @summary Tests that windows are removed from windows list
  28  * @modules java.desktop/sun.awt
  29  * @run main/othervm -Xms32M -Xmx32M WindowsLeak
  30 */
  31 
  32 import java.awt.*;
  33 import sun.awt.AppContext;
  34 
  35 import java.lang.ref.WeakReference;
  36 
  37 import java.util.Vector;
  38 
  39 public class WindowsLeak {
  40 
  41     public static void main(String[] args) {
  42         for (int i = 0; i < 100; i++)
  43         {
  44             Frame f = new Frame();
  45             f.pack();
  46             f.dispose();
  47         }
  48 
  49         Vector garbage = new Vector();
  50         while (true)
  51         {
  52             try
  53             {
  54                 garbage.add(new byte[1000]);
  55             }
  56             catch (OutOfMemoryError e)
  57             {
  58                 break;
  59             }
  60         }
  61         garbage = null;
  62 
  63         Vector<WeakReference<Window>> windowList =
  64                         (Vector<WeakReference<Window>>) AppContext.getAppContext().get(Window.class);
  65 
  66         if (windowList != null && !windowList.isEmpty()) {
  67             throw new RuntimeException("Test FAILED: Window list is not empty: " + windowList.size());
  68         }
  69 
  70         System.out.println("Test PASSED");
  71     }
  72 }