1 /*
   2  * Copyright (c) 2013, 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 /*
  25  * @test
  26  * @key headful
  27  * @bug 8013563 8028486
  28  * @summary Tests that windows are removed from windows list
  29  * @library /javax/swing/regtesthelpers
  30  * @build Util
  31  * @run main/othervm -Xms32M -Xmx32M WindowsLeak
  32 */
  33 
  34 import java.awt.Frame;
  35 import java.awt.Robot;
  36 import java.awt.Window;
  37 import java.lang.ref.WeakReference;
  38 import java.util.Vector;
  39 
  40 import sun.awt.AppContext;
  41 import sun.java2d.Disposer;
  42 
  43 public class WindowsLeak {
  44 
  45     private static volatile boolean disposerPhantomComplete;
  46 
  47     public static void main(String[] args) throws Exception {
  48         Robot r = new Robot();
  49         for (int i = 0; i < 100; i++) {
  50             Frame f = new Frame();
  51             f.pack();
  52             f.dispose();
  53         }
  54         r.waitForIdle();
  55 
  56         Disposer.addRecord(new Object(), () -> disposerPhantomComplete = true);
  57 
  58         while (!disposerPhantomComplete) {
  59             Util.generateOOME();
  60         }
  61 
  62         Vector<WeakReference<Window>> windowList =
  63                         (Vector<WeakReference<Window>>) AppContext.getAppContext().get(Window.class);
  64 
  65         if (windowList != null && !windowList.isEmpty()) {
  66             throw new RuntimeException("Test FAILED: Window list is not empty: " + windowList.size());
  67         }
  68 
  69         System.out.println("Test PASSED");
  70     }
  71 }