bug6464022.java revision 15235:fe58d505fffd 
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
21 * questions.
22 */
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
35import javax.swing.*;
36import java.lang.ref.WeakReference;
37import java.util.ArrayList;
38import java.util.List;
39
40public 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}
85