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Java example source code file (VMSupportsCS8.java)
The VMSupportsCS8.java Java example source code/* * 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 * @compile -source 1.5 VMSupportsCS8.java * @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"); } } } Other Java examples (source code examples)Here is a short list of links related to this Java VMSupportsCS8.java source code file: |
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