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  * @bug 8013563 8028486
  27  * @summary Tests that windows are removed from windows list
  28  * @library /javax/swing/regtesthelpers
  29  * @modules java.desktop/sun.awt
  30  *          java.desktop/sun.java2d
  31  * @build Util
  32  * @run main/othervm -Xms32M -Xmx32M WindowsLeak
  33 */
  34 
  35 import java.awt.Frame;
  36 import java.awt.Robot;
  37 import java.awt.Window;
  38 import java.lang.ref.WeakReference;
  39 import java.util.Vector;
  40 
  41 import sun.awt.AppContext;
  42 import sun.java2d.Disposer;
  43 
  44 public class WindowsLeak {
  45 
  46     private static volatile boolean disposerPhantomComplete;
  47 
  48     public static void main(String[] args) throws Exception {
  49         Robot r = new Robot();
  50         for (int i = 0; i < 100; i++) {
  51             Frame f = new Frame();
  52             f.pack();
  53             f.dispose();
  54         }
  55         r.waitForIdle();
  56 
  57         Disposer.addRecord(new Object(), () -> disposerPhantomComplete = true);
  58 
  59         while (!disposerPhantomComplete) {
  60             Util.generateOOME();
  61         }
  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 }