1/*
2 * Copyright (c) 2004, 2010, 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 * @test
26 * @bug 4992443 4994819
27 * @modules java.base/java.util.concurrent.atomic:open
28 * @run main VMSupportsCS8
29 * @summary Checks that the value of VMSupportsCS8 matches system properties.
30 */
31
32import java.lang.reflect.Field;
33
34public class VMSupportsCS8 {
35    public static void main(String[] args) throws Exception {
36        if (System.getProperty("sun.cpu.isalist").matches
37            (".*\\b(sparcv9|pentium_pro|ia64|amd64).*")
38            ||
39            System.getProperty("os.arch").matches
40            (".*\\b(ia64|amd64).*")) {
41
42            System.out.println("This system is known to have hardware CS8");
43
44            Class klass = Class.forName("java.util.concurrent.atomic.AtomicLong");
45            Field field = klass.getDeclaredField("VM_SUPPORTS_LONG_CAS");
46            field.setAccessible(true);
47            boolean VMSupportsCS8 = field.getBoolean(null);
48            if (! VMSupportsCS8)
49                throw new Exception("Unexpected value for VMSupportsCS8");
50        }
51    }
52}
53