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     4530538
  27  * @summary Basic unit test of memory management testing:
  28  *          1) setUsageThreshold() and getUsageThreshold()
  29  *          2) test low memory detection on the old generation.
  30  *
  31  * @author  Mandy Chung
  32  *
  33  * @library /lib/testlibrary/

  34  * @build jdk.testlibrary.* LowMemoryTest MemoryUtil RunUtil
  35   * @run main/timeout=600 LowMemoryTest
  36  * @requires vm.opt.ExplicitGCInvokesConcurrent != "true"
  37  * @requires vm.opt.ExplicitGCInvokesConcurrentAndUnloadsClasses != "true"
  38  * @requires vm.opt.DisableExplicitGC != "true"
  39  */
  40 
  41 import java.lang.management.*;
  42 import java.util.*;
  43 import java.util.concurrent.Phaser;
  44 import javax.management.*;
  45 import javax.management.openmbean.CompositeData;
  46 
  47 public class LowMemoryTest {
  48     private static final MemoryMXBean mm = ManagementFactory.getMemoryMXBean();
  49     private static final List<MemoryPoolMXBean> pools = ManagementFactory.getMemoryPoolMXBeans();
  50     private static final Phaser phaser = new Phaser(2);
  51     private static MemoryPoolMXBean mpool = null;
  52     private static boolean trace = false;
  53     private static boolean testFailed = false;

  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     4530538
  27  * @summary Basic unit test of memory management testing:
  28  *          1) setUsageThreshold() and getUsageThreshold()
  29  *          2) test low memory detection on the old generation.
  30  *
  31  * @author  Mandy Chung
  32  *
  33  * @library /lib/testlibrary/
  34  * @modules java.management
  35  * @build jdk.testlibrary.* LowMemoryTest MemoryUtil RunUtil
  36   * @run main/timeout=600 LowMemoryTest
  37  * @requires vm.opt.ExplicitGCInvokesConcurrent != "true"
  38  * @requires vm.opt.ExplicitGCInvokesConcurrentAndUnloadsClasses != "true"
  39  * @requires vm.opt.DisableExplicitGC != "true"
  40  */
  41 
  42 import java.lang.management.*;
  43 import java.util.*;
  44 import java.util.concurrent.Phaser;
  45 import javax.management.*;
  46 import javax.management.openmbean.CompositeData;
  47 
  48 public class LowMemoryTest {
  49     private static final MemoryMXBean mm = ManagementFactory.getMemoryMXBean();
  50     private static final List<MemoryPoolMXBean> pools = ManagementFactory.getMemoryPoolMXBeans();
  51     private static final Phaser phaser = new Phaser(2);
  52     private static MemoryPoolMXBean mpool = null;
  53     private static boolean trace = false;
  54     private static boolean testFailed = false;