Examples of org.jboss.profiler.jvmti.InventoryDataPoint

org.jboss.profiler.jvmti.InventoryDataPoint
Used to return quantity of instances and bytes per class

      Map inventory2 = jvmti.produceInventory();
      
      log.info("inventory1.size=" + inventory1.size());
      log.info("inventory2.size=" + inventory2.size());
      
      assertTrue("Test produced unexpected objects",jvmti.compareInventories(System.out, inventory1,inventory2,null, null, new InventoryDataPoint[] {new InventoryDataPoint(Object.class,10)}));
            
      conn.close();
      
      conn = null;

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      Map inventory2 = jvmti.produceInventory();
      
      log.info("inventory1.size=" + inventory1.size());
      log.info("inventory2.size=" + inventory2.size());
      
      assertTrue("Test produced unexpected objects",jvmti.compareInventories(System.out, inventory1,inventory2,null, null, new InventoryDataPoint[] {new InventoryDataPoint(Object.class,10)}));
      
      conn.close();
      
      conn = null;

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         jvmti.forceReleaseOnSoftReferences();
         jvmti.forceGC();


         Map inventory2 = jvmti.produceInventory();


         InventoryDataPoint dataPoint = (InventoryDataPoint) inventory2.get(ProducerState.class);
         if (dataPoint.getInstances() > 1)
         {
            // We should only have this producerState... we will look for where are the
            // other references
            ProducerState originalState = (ProducerState )
                ((DelegateSupport)p1.getDelegate()).getState();
            Object obj[] = jvmti.getAllObjects(ProducerState.class);


            for (int i = 0; i < obj.length; i++)
            {
               if (obj[i] != originalState)
               {
                  log.info("Exploring references on " + obj[i]);
                  Object[] holders = jvmti.getReferenceHolders(new Object[]{obj[i]});


                  for (int j = 0; j < holders.length; j++)
                  {
                     log.info("Holder[" + j + "] = " + holders[j]);
                  }


               }
            }


         }


         assertTrue("Test produced unexpected objects", jvmti.compareInventories(System.out,
            inventory1, inventory2, null, null,
            new InventoryDataPoint[]{new InventoryDataPoint(Object.class, 10)}));


      }
      finally
      {
         if (conn != null)

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      validateInstances(jvmti, FailoverValve2.class, inventory2, 1);
      validateInstances(jvmti, ClientConsumer.class, inventory2, 1);


      assertTrue("Test produced unexpected objects", jvmti.compareInventories(System.out,
          inventory1, inventory2, null, null,
          new InventoryDataPoint[]{new InventoryDataPoint(java.lang.ref.SoftReference.class, 10),
                                   new InventoryDataPoint(jvmti.getClassByName("java.io.ObjectStreamClass$WeakClassKey"), 100),
             new InventoryDataPoint(jvmti.getClassByName("java.util.concurrent.ConcurrentHashMap$HashEntry"), 100),
             new InventoryDataPoint(jvmti.getClassByName("java.util.WeakHashMap$Entry"), 500)


                                   }));


   }

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   /** Look on the HEAP information if a given class produced more objects than expected.
    *  If it happened, a report will be generated on the System.out */
   protected void validateInstances(JVMTIInterface jvmti, Class clazz, Map inventory, int maxExpectedResult)
   {
      InventoryDataPoint dataPoint = (InventoryDataPoint) inventory.get(clazz);
      if (dataPoint != null && dataPoint.getInstances() > 1)
      {
         log.info(clazz.getName() + " report -> " + jvmti.exploreObjectReferences(clazz.getName(),5,true));
         fail("Produced unexpected objects (" + dataPoint.getInstances() + " objects, while it was expecting " + maxExpectedResult + ") on " + clazz.getName());
      }
   }

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      tests[i] = new TestClass(); // allocating 1000 objects
    }
     
    Map secondMap = jvmti.produceInventory(); // the second inventory
    
    InventoryDataPoint point1 = (InventoryDataPoint)secondMap.get(TestClass.class);
    InventoryDataPoint point2 = (InventoryDataPoint)firstMap.get(TestClass.class);
    
    assertEquals(1000,point1.getInstances()-point2.getInstances()); // you can manually compare it
    
    assertTrue(jvmti.compareInventories(System.out,firstMap,secondMap,new Class[]{WeakHashMap.class},new String[]{"[Ljava.util.WeakHashMap$Entry;","java.lang.ref"}, new InventoryDataPoint[]{new InventoryDataPoint(TestClass.class,2000)}));
    assertFalse(jvmti.compareInventories(System.out,firstMap,secondMap,new Class[]{WeakHashMap.class},new String[]{"[Ljava.util.WeakHashMap$Entry;","java.lang.ref"}, new InventoryDataPoint[]{new InventoryDataPoint(TestClass.class,100)}));


  }

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      Map inventory2 = jvmti.produceInventory();
      
      log.info("inventory1.size=" + inventory1.size());
      log.info("inventory2.size=" + inventory2.size());
      
      assertTrue("Test produced unexpected objects",jvmti.compareInventories(System.out, inventory1,inventory2,null, null, new InventoryDataPoint[] {new InventoryDataPoint(Object.class,10)}));
            
      conn.close();
      
      conn = null;

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      Map inventory2 = jvmti.produceInventory();
      
      log.info("inventory1.size=" + inventory1.size());
      log.info("inventory2.size=" + inventory2.size());
      
      assertTrue("Test produced unexpected objects",jvmti.compareInventories(System.out, inventory1,inventory2,null, null, new InventoryDataPoint[] {new InventoryDataPoint(Object.class,10)}));
      
      conn.close();
      
      conn = null;

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Related Classes of org.jboss.profiler.jvmti.InventoryDataPoint

org.jboss.profiler.jvmtitest.JVMTITest

org.jboss.test.messaging.jms.clustering.ClusterLeakTest

org.jboss.test.messaging.jms.MemLeakTest

java.lang.ref.WeakReference

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