コード例 #1
0
  public void attemptManageC3P0Registry() {
    try {
      ObjectName name = new ObjectName(regName);
      C3P0RegistryManager mbean = new C3P0RegistryManager();

      if (mbs.isRegistered(name)) {
        if (logger.isLoggable(MLevel.WARNING)) {
          logger.warning(
              "A C3P0Registry mbean is already registered. "
                  + "This probably means that an application using c3p0 was undeployed, "
                  + "but not all PooledDataSources were closed prior to undeployment. "
                  + "This may lead to resource leaks over time. Please take care to close "
                  + "all PooledDataSources.");
        }
        mbs.unregisterMBean(name);
      }
      mbs.registerMBean(mbean, name);
    } catch (Exception e) {
      if (logger.isLoggable(MLevel.WARNING))
        logger.log(
            MLevel.WARNING,
            "Failed to set up C3P0RegistryManager mBean. "
                + "[c3p0 will still function normally, but management via JMX may not be possible.]",
            e);
    }
  }
コード例 #2
0
  private static void checkThreadInfo() throws Exception {
    // assume all threads stay alive
    long[] ids = (long[]) server.getAttribute(thread, "AllThreadIds");
    Object result = server.invoke(thread, "getThreadInfo", new Object[] {ids}, new String[] {"[J"});
    for (CompositeData cd : (CompositeData[]) result) {
      printThreadInfo(cd);
    }

    result =
        server.invoke(
            thread,
            "getThreadInfo",
            new Object[] {ids, new Integer(2)},
            new String[] {"[J", "int"});
    for (CompositeData cd : (CompositeData[]) result) {
      printThreadInfo(cd);
    }

    long id = Thread.currentThread().getId();
    result =
        server.invoke(thread, "getThreadInfo", new Object[] {new Long(id)}, new String[] {"long"});
    printThreadInfo((CompositeData) result);

    result =
        server.invoke(
            thread,
            "getThreadInfo",
            new Object[] {new Long(id), new Integer(2)},
            new String[] {"long", "int"});
    printThreadInfo((CompositeData) result);
  }
コード例 #3
0
 public static void main(String[] args) throws Exception {
   MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
   final Boolean isNotificationSupported =
       AccessController.doPrivileged(
           new PrivilegedAction<Boolean>() {
             public Boolean run() {
               try {
                 Class cl = Class.forName("sun.management.VMManagementImpl");
                 Field f = cl.getDeclaredField("gcNotificationSupport");
                 f.setAccessible(true);
                 return f.getBoolean(null);
               } catch (ClassNotFoundException e) {
                 return false;
               } catch (NoSuchFieldException e) {
                 return false;
               } catch (IllegalAccessException e) {
                 return false;
               }
             }
           });
   if (!isNotificationSupported) {
     System.out.println("GC Notification not supported by the JVM, test skipped");
     return;
   }
   final ObjectName gcMXBeanPattern = new ObjectName("java.lang:type=GarbageCollector,*");
   Set<ObjectName> names = mbs.queryNames(gcMXBeanPattern, null);
   if (names.isEmpty()) throw new Exception("Test incorrect: no GC MXBeans");
   number = names.size();
   for (ObjectName n : names) {
     if (mbs.isInstanceOf(n, "javax.management.NotificationEmitter")) {
       listenerInvoked.put(n.getCanonicalName(), null);
       GcListener listener = new GcListener();
       mbs.addNotificationListener(n, listener, null, null);
     }
   }
   // Invocation of System.gc() to trigger major GC
   System.gc();
   // Allocation of many short living and small objects to trigger minor GC
   Object data[] = new Object[32];
   for (int i = 0; i < 100000000; i++) {
     data[i % 32] = new int[8];
   }
   int wakeup = 0;
   synchronized (synchronizer) {
     while (count != number) {
       synchronizer.wait(10000);
       wakeup++;
       if (wakeup > 10) break;
     }
   }
   for (GarbageCollectionNotificationInfo notif : listenerInvoked.values()) {
     checkGarbageCollectionNotificationInfoContent(notif);
   }
   System.out.println("Test passed");
 }
コード例 #4
0
  private static void checkEnum() throws Exception {
    String type = (String) server.getAttribute(heapPool, "Type");
    if (!type.equals("HEAP")) {
      throw new RuntimeException("TEST FAILED: " + " incorrect memory type for " + heapPool);
    }

    type = (String) server.getAttribute(nonHeapPool, "Type");
    if (!type.equals("NON_HEAP")) {
      throw new RuntimeException("TEST FAILED: " + " incorrect memory type for " + nonHeapPool);
    }
  }
コード例 #5
0
 private static void checkPlatformMBeans() throws Exception {
   MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
   Set<ObjectName> mbeanNames = mbs.queryNames(null, null);
   for (ObjectName name : mbeanNames) {
     if (!mbs.isInstanceOf(name, NotificationBroadcaster.class.getName())) {
       System.out.println(name + ": not a NotificationBroadcaster");
     } else {
       MBeanInfo mbi = mbs.getMBeanInfo(name);
       check(name.toString(), mbi.getNotifications());
     }
   }
 }
コード例 #6
0
 public void attemptUnmanageC3P0Registry() {
   try {
     ObjectName name = new ObjectName(regName);
     if (mbs.isRegistered(name)) {
       mbs.unregisterMBean(name);
       if (logger.isLoggable(MLevel.FINER))
         logger.log(MLevel.FINER, "C3P0Registry mbean unregistered.");
     } else if (logger.isLoggable(MLevel.FINE))
       logger.fine(
           "The C3P0Registry mbean was not found in the registry, so could not be unregistered.");
   } catch (Exception e) {
     if (logger.isLoggable(MLevel.WARNING))
       logger.log(
           MLevel.WARNING,
           "An Exception occurred while trying to unregister the C3P0RegistryManager mBean." + e);
   }
 }
コード例 #7
0
 public void attemptUnmanagePooledDataSource(PooledDataSource pds) {
   String nameStr = getPdsObjectNameStr(pds);
   try {
     ObjectName name = new ObjectName(nameStr);
     if (mbs.isRegistered(name)) {
       mbs.unregisterMBean(name);
       if (logger.isLoggable(MLevel.FINER))
         logger.log(MLevel.FINER, "MBean: " + nameStr + " unregistered.");
     } else if (logger.isLoggable(MLevel.FINE))
       logger.fine(
           "The mbean "
               + nameStr
               + " was not found in the registry, so could not be unregistered.");
   } catch (Exception e) {
     if (logger.isLoggable(MLevel.WARNING))
       logger.log(
           MLevel.WARNING,
           "An Exception occurred while unregistering mBean. [" + nameStr + "] " + e);
   }
 }
コード例 #8
0
 private static void checkSunGC() throws Exception {
   // Test com.sun.management proxy
   List<GarbageCollectorMXBean> gcs = getGarbageCollectorMXBeans();
   for (GarbageCollectorMXBean gc : gcs) {
     ObjectName sunGc =
         new ObjectName(GARBAGE_COLLECTOR_MXBEAN_DOMAIN_TYPE + ",name=" + gc.getName());
     CompositeData cd = (CompositeData) server.getAttribute(sunGc, "LastGcInfo");
     if (cd != null) {
       System.out.println("GC statistic for : " + gc.getName());
       printGcInfo(cd);
     }
   }
 }
コード例 #9
0
  public static void main(String[] argv) throws Exception {
    memory = new ObjectName(MEMORY_MXBEAN_NAME);
    runtime = new ObjectName(RUNTIME_MXBEAN_NAME);
    thread = new ObjectName(THREAD_MXBEAN_NAME);
    os = new ObjectName(OPERATING_SYSTEM_MXBEAN_NAME);

    List<MemoryPoolMXBean> pools = getMemoryPoolMXBeans();
    for (MemoryPoolMXBean p : pools) {
      if (heapPool == null
          && p.getType() == MemoryType.HEAP
          && p.isUsageThresholdSupported()
          && p.isCollectionUsageThresholdSupported()) {
        heapPool = new ObjectName(MEMORY_POOL_MXBEAN_DOMAIN_TYPE + ",name=" + p.getName());
      }
      if (nonHeapPool == null
          && p.getType() == MemoryType.NON_HEAP
          && p.isUsageThresholdSupported()) {
        nonHeapPool = new ObjectName(MEMORY_POOL_MXBEAN_DOMAIN_TYPE + ",name=" + p.getName());
      }
    }

    // Check notification emitters
    MyListener listener = new MyListener();
    server.addNotificationListener(memory, listener, null, null);
    server.removeNotificationListener(memory, listener);

    checkEnum();
    checkList();
    checkMap();
    checkMemoryUsage();
    checkThreadInfo();

    checkOS();
    checkSunGC();

    System.out.println("Test passed.");
  }
コード例 #10
0
 private static void checkList() throws Exception {
   String[] args = (String[]) server.getAttribute(runtime, "InputArguments");
   if (args.length < 1) {
     throw new RuntimeException("TEST FAILED: " + " empty input arguments");
   }
   // check if -verbose:gc exists
   boolean found = false;
   for (String option : args) {
     if (option.equals(OPTION)) {
       found = true;
       break;
     }
   }
   if (!found) {
     throw new RuntimeException("TEST FAILED: " + "VM option " + OPTION + " not found");
   }
 }
コード例 #11
0
 private static void checkMemoryUsage() throws Exception {
   // sanity check to have non-zero usage
   Object u1 = server.getAttribute(memory, "HeapMemoryUsage");
   Object u2 = server.getAttribute(memory, "NonHeapMemoryUsage");
   Object u3 = server.getAttribute(heapPool, "Usage");
   Object u4 = server.getAttribute(nonHeapPool, "Usage");
   if (getCommitted(u1) <= 0
       || getCommitted(u2) <= 0
       || getCommitted(u3) <= 0
       || getCommitted(u4) <= 0) {
     throw new RuntimeException("TEST FAILED: " + " expected non-zero committed usage");
   }
   server.invoke(memory, "gc", new Object[0], new String[0]);
   Object u5 = server.getAttribute(heapPool, "CollectionUsage");
   if (getCommitted(u5) <= 0) {
     throw new RuntimeException("TEST FAILED: " + " expected non-zero committed collected usage");
   }
 }
コード例 #12
0
  private static void checkMap() throws Exception {
    // Add new system properties
    System.setProperty(KEY1, VALUE1);
    System.setProperty(KEY2, VALUE2);

    TabularData props1 = (TabularData) server.getAttribute(runtime, "SystemProperties");

    String value1 = getProperty(props1, KEY1);
    if (value1 == null || !value1.equals(VALUE1)) {
      throw new RuntimeException(
          "TEST FAILED: "
              + KEY1
              + " property found"
              + " with value = "
              + value1
              + " but expected to be "
              + VALUE1);
    }

    String value2 = getProperty(props1, KEY2);
    if (value2 == null || !value2.equals(VALUE2)) {
      throw new RuntimeException(
          "TEST FAILED: "
              + KEY2
              + " property found"
              + " with value = "
              + value2
              + " but expected to be "
              + VALUE2);
    }

    String value3 = getProperty(props1, KEY3);
    if (value3 != null) {
      throw new RuntimeException(
          "TEST FAILED: " + KEY3 + " property found" + " but should not exist");
    }
  }
コード例 #13
0
  public void attemptManagePooledDataSource(PooledDataSource pds) {
    String name = null;
    try {
      name = getPdsObjectNameStr(pds);
      ObjectName oname = new ObjectName(name);
      if (mbs.isRegistered(oname)) {
        if (logger.isLoggable(MLevel.WARNING))
          logger.warning(
              "You are attempting to register an mbean '"
                  + name
                  + "', but an mbean by that name is already registered. "
                  + "The new mbean will replace the old one in the MBean server. "
                  + (EXCLUDE_IDENTITY_TOKEN
                      ? "Since you have excluded the guaranteed-unique identity token, you must take care to give each PooledDataSource a unique dataSourceName."
                      : "This should not happen unless you have (pathologically) modified the DataSource's guaranteed-unique identityToken."));
      }

      // PooledDataSourceManager mbean = new PooledDataSourceManager( pds );
      // mbs.registerMBean(mbean, ObjectName.getInstance(name));
      // if (logger.isLoggable(MLevel.FINER))
      //    logger.log(MLevel.FINER, "MBean: " + name + " registered.");

      // DynamicPooledDataSourceManagerMBean registers itself on construction (and logs its own
      // registration)
      DynamicPooledDataSourceManagerMBean mbean =
          new DynamicPooledDataSourceManagerMBean(pds, name, mbs);
    } catch (Exception e) {
      if (logger.isLoggable(MLevel.WARNING))
        logger.log(
            MLevel.WARNING,
            "Failed to set up a PooledDataSourceManager mBean. [ "
                + (name == null ? pds.toString() : name)
                + " ] c3p0 will still function normally, but management of this DataSource by JMX may not be possible.",
            e);
    }
  }
コード例 #14
0
 private static void checkOS() throws Exception {
   Integer cpus = (Integer) server.getAttribute(os, "AvailableProcessors");
   System.out.println("# CPUs = " + cpus);
   Long vmem = (Long) server.getAttribute(os, "CommittedVirtualMemorySize");
   System.out.println("Committed virtual memory = " + vmem);
 }