01: /*
02: * Distributed as part of c3p0 v.0.9.1.2
03: *
04: * Copyright (C) 2005 Machinery For Change, Inc.
05: *
06: * Author: Steve Waldman <swaldman@mchange.com>
07: *
08: * This library is free software; you can redistribute it and/or modify
09: * it under the terms of the GNU Lesser General Public License version 2.1, as
10: * published by the Free Software Foundation.
11: *
12: * This software is distributed in the hope that it will be useful,
13: * but WITHOUT ANY WARRANTY; without even the implied warranty of
14: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15: * GNU Lesser General Public License for more details.
16: *
17: * You should have received a copy of the GNU Lesser General Public License
18: * along with this software; see the file LICENSE. If not, write to the
19: * Free Software Foundation, Inc., 59 Temple Place, Suite 330,
20: * Boston, MA 02111-1307, USA.
21: */
22:
23: package com.mchange.v2.holders;
24:
25: import java.io.*;
26: import com.mchange.v2.ser.UnsupportedVersionException;
27:
28: public class SynchronizedIntHolder implements ThreadSafeIntHolder,
29: Serializable {
30: transient int value;
31:
32: public SynchronizedIntHolder(int value) {
33: this .value = value;
34: }
35:
36: public SynchronizedIntHolder() {
37: this (0);
38: }
39:
40: public synchronized int getValue() {
41: return value;
42: }
43:
44: public synchronized void setValue(int value) {
45: this .value = value;
46: }
47:
48: public synchronized void increment() {
49: ++value;
50: }
51:
52: public synchronized void decrement() {
53: --value;
54: }
55:
56: //Serialization
57: static final long serialVersionUID = 1; //override to take control of versioning
58: private final static short VERSION = 0x0001;
59:
60: private void writeObject(ObjectOutputStream out) throws IOException {
61: out.writeShort(VERSION);
62: out.writeInt(value);
63: }
64:
65: private void readObject(ObjectInputStream in) throws IOException {
66: short version = in.readShort();
67: switch (version) {
68: case 0x0001:
69: this .value = in.readInt();
70: break;
71: default:
72: throw new UnsupportedVersionException(this, version);
73: }
74: }
75: }
|