1 /*
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   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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   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
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  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  * @key headful
  27  * @bug 6464022
  28  * @summary Memory leak in JOptionPane.createDialog
  29  * @author Pavel Porvatov
  30  * @library ../../regtesthelpers
  31  * @build Util
  32  * @run main bug6464022
  33  */
  34 
  35 import javax.swing.*;
  36 import java.lang.ref.WeakReference;
  37 import java.util.ArrayList;
  38 import java.util.List;
  39 
  40 public class bug6464022 {
  41     private static JOptionPane pane;
  42 
  43     public static void main(String[] args) throws Exception {
  44         final List<WeakReference<JDialog>> references = new ArrayList<WeakReference<JDialog>>();
  45 
  46         SwingUtilities.invokeAndWait(new Runnable() {
  47             public void run() {
  48                 pane = new JOptionPane(null, JOptionPane.UNDEFINED_CONDITION);
  49 
  50                 for (int i = 0; i < 10; i++) {
  51                     JDialog dialog = pane.createDialog(null, "Test " + i);
  52 
  53                     references.add(new WeakReference<JDialog>(dialog));
  54 
  55                     dialog.dispose();
  56 
  57                     System.out.println("Disposing Dialog:" + dialog.hashCode());
  58                 }
  59             }
  60         });
  61 
  62         Util.generateOOME();
  63 
  64         SwingUtilities.invokeAndWait(new Runnable() {
  65             public void run() {
  66                 int allocatedCount = 0;
  67 
  68                 for (WeakReference<JDialog> ref : references) {
  69                     if (ref.get() != null) {
  70                         allocatedCount++;
  71 
  72                         System.out.println(ref.get().hashCode() + " is still allocated");
  73                     }
  74                 }
  75 
  76                 if (allocatedCount > 0) {
  77                     throw new RuntimeException("Some dialogs still exist in memory. Test failed");
  78                 } else {
  79                     System.out.println("All dialogs were GCed. Test passed.");
  80                 }
  81             }
  82         });
  83     }
  84 }