1 /*
   2  * Copyright (c) 2011, 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
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  23 
  24 /*
  25  * @test
  26  * @bug 6464022
  27  * @summary Memory leak in JOptionPane.createDialog
  28  * @author Pavel Porvatov
  29  * @library ../../regtesthelpers
  30  * @build Util
  31  * @run main bug6464022
  32  */
  33 
  34 import javax.swing.*;
  35 import java.lang.ref.WeakReference;
  36 import java.util.ArrayList;
  37 import java.util.List;
  38 
  39 public class bug6464022 {
  40     private static JOptionPane pane;
  41 
  42     public static void main(String[] args) throws Exception {
  43         final List<WeakReference<JDialog>> references = new ArrayList<WeakReference<JDialog>>();
  44 
  45         SwingUtilities.invokeAndWait(new Runnable() {
  46             public void run() {
  47                 pane = new JOptionPane(null, JOptionPane.UNDEFINED_CONDITION);
  48 
  49                 for (int i = 0; i < 10; i++) {
  50                     JDialog dialog = pane.createDialog(null, "Test " + i);
  51 
  52                     references.add(new WeakReference<JDialog>(dialog));
  53 
  54                     dialog.dispose();
  55 
  56                     System.out.println("Disposing Dialog:" + dialog.hashCode());
  57                 }
  58             }
  59         });
  60 
  61         Util.generateOOME();
  62 
  63         SwingUtilities.invokeAndWait(new Runnable() {
  64             public void run() {
  65                 int allocatedCount = 0;
  66 
  67                 for (WeakReference<JDialog> ref : references) {
  68                     if (ref.get() != null) {
  69                         allocatedCount++;
  70 
  71                         System.out.println(ref.get().hashCode() + " is still allocated");
  72                     }
  73                 }
  74 
  75                 if (allocatedCount > 0) {
  76                     throw new RuntimeException("Some dialogs still exist in memory. Test failed");
  77                 } else {
  78                     System.out.println("All dialogs were GCed. Test passed.");
  79                 }
  80             }
  81         });
  82     }
  83 }