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test/serviceability/dcmd/gc/FinalizerInfoTest.java

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  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 import org.testng.annotations.Test;
  25 import org.testng.Assert;
  26 
  27 import java.util.concurrent.TimeUnit;
  28 import java.util.concurrent.locks.Condition;
  29 import java.util.concurrent.locks.ReentrantLock;
  30 
  31 import jdk.test.lib.OutputAnalyzer;
  32 import jdk.test.lib.dcmd.CommandExecutor;
  33 import jdk.test.lib.dcmd.PidJcmdExecutor;
  34 
  35 /*
  36  * @test
  37  * @summary
  38  * @library /testlibrary
  39  * @modules java.base/jdk.internal.misc
  40  * @modules java.xml
  41  *          java.management
  42  * @build jdk.test.lib.*
  43  * @build jdk.test.lib.dcmd.*
  44  * @run testng FinalizerInfoTest
  45  */
  46 public class FinalizerInfoTest {
  47     static ReentrantLock lock = new ReentrantLock();
  48     static volatile int wasInitialized = 0;
  49     static volatile int wasTrapped = 0;
  50     static final String cmd = "GC.finalizer_info";
  51     static final int objectsCount = 1000;
  52 
  53     class MyObject {
  54         public MyObject() {
  55             // Make sure object allocation/deallocation is not optimized out
  56             wasInitialized += 1;
  57         }
  58 
  59         protected void finalize() {
  60             // Trap the object in a finalization queue
  61             wasTrapped += 1;
  62             lock.lock();
  63         }




  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 import org.testng.annotations.Test;
  25 import org.testng.Assert;
  26 
  27 import java.util.concurrent.TimeUnit;
  28 import java.util.concurrent.locks.Condition;
  29 import java.util.concurrent.locks.ReentrantLock;
  30 
  31 import jdk.test.lib.process.OutputAnalyzer;
  32 import jdk.test.lib.dcmd.CommandExecutor;
  33 import jdk.test.lib.dcmd.PidJcmdExecutor;
  34 
  35 /*
  36  * @test
  37  * @summary
  38  * @library /test/lib
  39  * @modules java.base/jdk.internal.misc
  40  * @modules java.xml
  41  *          java.management


  42  * @run testng FinalizerInfoTest
  43  */
  44 public class FinalizerInfoTest {
  45     static ReentrantLock lock = new ReentrantLock();
  46     static volatile int wasInitialized = 0;
  47     static volatile int wasTrapped = 0;
  48     static final String cmd = "GC.finalizer_info";
  49     static final int objectsCount = 1000;
  50 
  51     class MyObject {
  52         public MyObject() {
  53             // Make sure object allocation/deallocation is not optimized out
  54             wasInitialized += 1;
  55         }
  56 
  57         protected void finalize() {
  58             // Trap the object in a finalization queue
  59             wasTrapped += 1;
  60             lock.lock();
  61         }


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