/*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
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* 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).
*
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* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
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*/
/*
* @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");
}
}
}