Deadlock.java revision 1870:4aa2e64eff30 
1/*
2 * Copyright (c) 2015, 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/*
26 * @test
27 * @summary Deadlocked client
28 */
29public class Deadlock {
30    public double e;
31    private volatile int i;
32
33    public static void main(String[] args) {
34        new Deadlock().test();
35    }
36    private void test() {
37        final Object a = new Object();
38        final Object b = new Object();
39
40        new Thread(new Runnable() {
41            @Override
42            public void run() {
43                synchronized (a) {
44                    do {
45                        i |= 1;
46                    } while (i != 3);
47
48                    synchronized (b) {
49                        e = 1;
50                    }
51                }
52            }}).start();
53
54        synchronized (b) {
55            do {
56                i |= 2;
57            } while (i != 3);
58            synchronized (a) {
59                e = 2;
60            }
61        }
62    }
63}
64