J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 1998 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 21 | * have any questions. |
| 22 | */ |
| 23 | |
| 24 | /* @test |
| 25 | * @clean A |
| 26 | * @bug 4146453 |
| 27 | * @summary Test that regrow of object/handle table of ObjectOutputStream works. |
| 28 | */ |
| 29 | |
| 30 | import java.io.*; |
| 31 | import java.util.HashSet; |
| 32 | import java.util.Iterator; |
| 33 | |
| 34 | class A implements Serializable { |
| 35 | static HashSet writeObjectExtent = new HashSet(); |
| 36 | |
| 37 | private void writeObject(ObjectOutputStream out) throws IOException { |
| 38 | if (writeObjectExtent.contains(this)) { |
| 39 | throw new InvalidObjectException("writeObject: object " + |
| 40 | this.toString() + " has already " |
| 41 | + "been serialized and should " + |
| 42 | "have be serialized by reference."); |
| 43 | } else { |
| 44 | writeObjectExtent.add(this); |
| 45 | } |
| 46 | out.defaultWriteObject(); |
| 47 | } |
| 48 | |
| 49 | A() { |
| 50 | } |
| 51 | } |
| 52 | |
| 53 | public class VerifyDynamicObjHandleTable { |
| 54 | public static void main(String args[]) |
| 55 | throws IOException, ClassNotFoundException |
| 56 | { |
| 57 | ObjectOutputStream out = |
| 58 | new ObjectOutputStream(new ByteArrayOutputStream(3000)); |
| 59 | for (int i = 0; i < 1000; i++) { |
| 60 | out.writeObject(new A()); |
| 61 | } |
| 62 | |
| 63 | // Make sure that serialization subsystem does not |
| 64 | // allow writeObject to be called on any objects that |
| 65 | // have already been serialized. These objects should be |
| 66 | // written out by reference. |
| 67 | Iterator iter = A.writeObjectExtent.iterator(); |
| 68 | while (iter.hasNext()) { |
| 69 | out.writeObject(iter.next()); |
| 70 | } |
| 71 | |
| 72 | out.close(); |
| 73 | } |
| 74 | } |