| /* |
| * Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* |
| * @test |
| * @bug 4992443 4994819 |
| * @modules java.base/java.util.concurrent.atomic:open |
| * @run main VMSupportsCS8 |
| * @summary Checks that the value of VMSupportsCS8 matches system properties. |
| */ |
| |
| import java.lang.reflect.Field; |
| |
| public class VMSupportsCS8 { |
| public static void main(String[] args) throws Exception { |
| if (System.getProperty("sun.cpu.isalist").matches |
| (".*\\b(sparcv9|pentium_pro|ia64|amd64).*") |
| || |
| System.getProperty("os.arch").matches |
| (".*\\b(ia64|amd64).*")) { |
| |
| System.out.println("This system is known to have hardware CS8"); |
| |
| Class klass = Class.forName("java.util.concurrent.atomic.AtomicLong"); |
| Field field = klass.getDeclaredField("VM_SUPPORTS_LONG_CAS"); |
| field.setAccessible(true); |
| boolean VMSupportsCS8 = field.getBoolean(null); |
| if (! VMSupportsCS8) |
| throw new Exception("Unexpected value for VMSupportsCS8"); |
| } |
| } |
| } |