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 6303187
  27  * @summary Test that no locks are held when a monitor attribute is sampled
  28  * or notif delivered.
  29  * @author Eamonn McManus
  30  *
  31  * @library /lib/testlibrary
  32  *
  33  * @run clean GaugeMonitorDeadlockTest
  34  * @run build GaugeMonitorDeadlockTest
  35  * @run main GaugeMonitorDeadlockTest 1
  36  * @run main GaugeMonitorDeadlockTest 2
  37  * @run main GaugeMonitorDeadlockTest 3
  38  * @run main GaugeMonitorDeadlockTest 4
  39  */
  40 
  41 import java.lang.management.ManagementFactory;
  42 import java.lang.management.ThreadInfo;
  43 import java.lang.management.ThreadMXBean;
  44 import java.util.concurrent.atomic.AtomicInteger;
  45 import javax.management.JMX;
  46 import javax.management.MBeanServer;
  47 import javax.management.Notification;
  48 import javax.management.NotificationListener;
  49 import javax.management.ObjectName;
  50 import javax.management.monitor.GaugeMonitor;
  51 import javax.management.monitor.GaugeMonitorMBean;
  52 
  53 import jdk.testlibrary.Utils;
  54 
  55 public class GaugeMonitorDeadlockTest {
  56     private static enum When {IN_GET_ATTRIBUTE, IN_NOTIFY};
  57     private static long checkingTime;
  58 
  59     public static void main(String[] args) throws Exception {
  60         if (args.length != 1)
  61             throw new Exception("Arg should be test number");
  62         checkingTime = Utils.adjustTimeout(1000); // default 1s timeout
  63         System.out.println("=== checkingTime = " + checkingTime + "ms");
  64 
  65         int testNo = Integer.parseInt(args[0]) - 1;
  66         TestCase test = testCases[testNo];
  67         System.out.println("Test: " + test.getDescription());
  68         test.run();
  69         System.out.println("Test passed");
  70     }
  71 
  72     private static abstract class TestCase {
  73         TestCase(String description, When when) {

  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 6303187
  27  * @summary Test that no locks are held when a monitor attribute is sampled
  28  * or notif delivered.
  29  * @author Eamonn McManus
  30  *
  31  * @library /test/lib
  32  *
  33  * @run clean GaugeMonitorDeadlockTest
  34  * @run build GaugeMonitorDeadlockTest
  35  * @run main GaugeMonitorDeadlockTest 1
  36  * @run main GaugeMonitorDeadlockTest 2
  37  * @run main GaugeMonitorDeadlockTest 3
  38  * @run main GaugeMonitorDeadlockTest 4
  39  */
  40 
  41 import java.lang.management.ManagementFactory;
  42 import java.lang.management.ThreadInfo;
  43 import java.lang.management.ThreadMXBean;
  44 import java.util.concurrent.atomic.AtomicInteger;
  45 import javax.management.JMX;
  46 import javax.management.MBeanServer;
  47 import javax.management.Notification;
  48 import javax.management.NotificationListener;
  49 import javax.management.ObjectName;
  50 import javax.management.monitor.GaugeMonitor;
  51 import javax.management.monitor.GaugeMonitorMBean;
  52 
  53 import jdk.test.lib.Utils;
  54 
  55 public class GaugeMonitorDeadlockTest {
  56     private static enum When {IN_GET_ATTRIBUTE, IN_NOTIFY};
  57     private static long checkingTime;
  58 
  59     public static void main(String[] args) throws Exception {
  60         if (args.length != 1)
  61             throw new Exception("Arg should be test number");
  62         checkingTime = Utils.adjustTimeout(1000); // default 1s timeout
  63         System.out.println("=== checkingTime = " + checkingTime + "ms");
  64 
  65         int testNo = Integer.parseInt(args[0]) - 1;
  66         TestCase test = testCases[testNo];
  67         System.out.println("Test: " + test.getDescription());
  68         test.run();
  69         System.out.println("Test passed");
  70     }
  71 
  72     private static abstract class TestCase {
  73         TestCase(String description, When when) {