1/*
2 * Copyright (c) 1998, 2012, 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/* @test
25 * @bug 4146453
26 * @summary Test that regrow of object/handle table of ObjectOutputStream works.
27 */
28
29import java.io.*;
30import java.util.HashSet;
31import java.util.Iterator;
32
33class A implements Serializable {
34    static HashSet writeObjectExtent = new HashSet();
35
36    private void writeObject(ObjectOutputStream out) throws IOException {
37        if (writeObjectExtent.contains(this)) {
38            throw new InvalidObjectException("writeObject: object " +
39                                             this.toString() + " has already "
40                                             + "been serialized and should " +
41                                             "have be serialized by reference.");
42        } else {
43            writeObjectExtent.add(this);
44        }
45        out.defaultWriteObject();
46    }
47
48    A() {
49    }
50}
51
52public class VerifyDynamicObjHandleTable {
53    public static void main(String args[])
54        throws IOException, ClassNotFoundException
55    {
56        ObjectOutputStream out =
57            new ObjectOutputStream(new ByteArrayOutputStream(3000));
58        for (int i = 0; i < 1000; i++) {
59            out.writeObject(new A());
60        }
61
62        // Make sure that serialization subsystem does not
63        // allow writeObject to be called on any objects that
64        // have already been serialized. These objects should be
65        // written out by reference.
66        Iterator iter = A.writeObjectExtent.iterator();
67        while (iter.hasNext()) {
68            out.writeObject(iter.next());
69        }
70
71        out.close();
72    }
73}
74