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test/jdk/java/util/concurrent/atomic/VMSupportsCS8.java

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rev 59105 : imported patch corelibs


  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 
  32 import java.lang.reflect.Field;
  33 
  34 public class VMSupportsCS8 {
  35     public static void main(String[] args) throws Exception {
  36         String isalist = System.getProperty("sun.cpu.isalist");
  37         if (isalist != null && isalist.matches
  38             (".*\\b(sparcv9|pentium_pro|ia64|amd64).*")
  39             ||
  40             System.getProperty("os.arch").matches
  41             (".*\\b(ia64|amd64).*")) {
  42 
  43             System.out.println("This system is known to have hardware CS8");
  44 
  45             Class klass = Class.forName("java.util.concurrent.atomic.AtomicLong");
  46             Field field = klass.getDeclaredField("VM_SUPPORTS_LONG_CAS");
  47             field.setAccessible(true);
  48             boolean VMSupportsCS8 = field.getBoolean(null);
  49             if (! VMSupportsCS8)
  50                 throw new Exception("Unexpected value for VMSupportsCS8");
  51         }
  52     }
  53 }


  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 
  32 import java.lang.reflect.Field;
  33 
  34 public class VMSupportsCS8 {
  35     public static void main(String[] args) throws Exception {
  36         String isalist = System.getProperty("sun.cpu.isalist");
  37         if (isalist != null && isalist.matches
  38             (".*\\b(pentium_pro|ia64|amd64).*")
  39             ||
  40             System.getProperty("os.arch").matches
  41             (".*\\b(ia64|amd64).*")) {
  42 
  43             System.out.println("This system is known to have hardware CS8");
  44 
  45             Class klass = Class.forName("java.util.concurrent.atomic.AtomicLong");
  46             Field field = klass.getDeclaredField("VM_SUPPORTS_LONG_CAS");
  47             field.setAccessible(true);
  48             boolean VMSupportsCS8 = field.getBoolean(null);
  49             if (! VMSupportsCS8)
  50                 throw new Exception("Unexpected value for VMSupportsCS8");
  51         }
  52     }
  53 }
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