JDK-8011893.js revision 877:cf4d2252d444 
1/*
2 * Copyright (c) 2010, 2013, 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 * JDK-8011893: JS Object builtin prototype is not thread safe
26 *
27 * @test
28 * @run
29 */
30
31var a = {};
32var thread = new java.lang.Thread(new java.lang.Runnable() {
33    run: function() {
34        print("Thread starts");
35        for (var i = 0; i < 1000000; i++) {
36            // Unsubscribe to builtin, subscribe to new proto
37            var b = Object.create(a);
38        }
39        print("Thread done");
40    }
41});
42
43print("Main starts");
44thread.start();
45for (var j = 0; j < 1000000; j++) {
46    // Subscribe to builtin prototype.
47    a = {};
48}
49
50thread.join();
51print("Main done");
52