Examples of java.lang.management.RuntimeMXBean

java.lang.management.RuntimeMXBean
The management interface for the runtime system of the Java virtual machine.
A Java virtual machine has a single instance of the implementation class of this interface. This instance implementing this interface is an MXBean that can be obtained by calling the {@link ManagementFactory#getRuntimeMXBean} method orfrom the {@link ManagementFactory#getPlatformMBeanServer platform MBeanServer} method.
The ObjectName for uniquely identifying the MXBean for the runtime system within an MBeanServer is:
{@link ManagementFactory#RUNTIME_MXBEAN_NAME java.lang:type=Runtime}

This interface defines several convenient methods for accessing system properties about the Java virtual machine. @see JMX Specification. @see Ways to Access MXBeans @author Mandy Chung @version 1.14, 11/17/05 @since 1.5

   * dump and bring up resultant hprof in something like jprofiler which
   * allows you get 'deep size' on objects.
   * @param args main args
   */
  public static void main(String [] args) {
    RuntimeMXBean runtime = ManagementFactory.getRuntimeMXBean();
    LOG.info("vmName=" + runtime.getVmName() + ", vmVendor=" +
      runtime.getVmVendor() + ", vmVersion=" + runtime.getVmVersion());
    LOG.info("vmInputArguments=" + runtime.getInputArguments());
    MemStore memstore1 = new MemStore();
    // TODO: x32 vs x64
    long size = 0;
    final int count = 10000;
    byte [] fam = Bytes.toBytes("col");

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  /**
   * @return the setting of -XX:MaxDirectMemorySize as a long. Returns 0 if
   *         -XX:MaxDirectMemorySize is not set.
   */
  public static long getDirectMemorySize() {
    RuntimeMXBean runtimemxBean = ManagementFactory.getRuntimeMXBean();
    List<String> arguments = runtimemxBean.getInputArguments();
    long multiplier = 1; //for the byte case.
    for (String s : arguments) {
      if (s.contains("-XX:MaxDirectMemorySize=")) {
        String memSize = s.toLowerCase()
            .replace("-xx:maxdirectmemorysize=", "").trim();

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   * dump and bring up resultant hprof in something like jprofiler which
   * allows you get 'deep size' on objects.
   * @param args
   */
  public static void main(String [] args) {
    RuntimeMXBean runtime = ManagementFactory.getRuntimeMXBean();
    LOG.info("vmName=" + runtime.getVmName() + ", vmVendor=" +
      runtime.getVmVendor() + ", vmVersion=" + runtime.getVmVersion());
    LOG.info("vmInputArguments=" + runtime.getInputArguments());
    MemStore memstore1 = new MemStore();
    // TODO: x32 vs x64
    long size = 0;
    final int count = 10000;
    byte [] column = Bytes.toBytes("col:umn");

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          // LocalHBaseCluster.  It manages 'local' clusters.
          if (LocalHBaseCluster.isLocal(conf)) {
            LOG.warn("Not starting a distinct region server because " +
              HConstants.CLUSTER_DISTRIBUTED + " is false");
          } else {
            RuntimeMXBean runtime = ManagementFactory.getRuntimeMXBean();
            if (runtime != null) {
              LOG.info("vmInputArguments=" + runtime.getInputArguments());
            }
            Constructor<? extends HRegionServer> c =
              regionServerClass.getConstructor(HBaseConfiguration.class);
            HRegionServer hrs = c.newInstance(conf);
            Thread t = new Thread(hrs);

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        }
    }


    private int getPID()
    {
        RuntimeMXBean rtb = ManagementFactory.getRuntimeMXBean();
        String processName = rtb.getName();
        if (processName != null && processName.indexOf('@')>0)
        {
            try
            {
                return Integer.parseInt(processName.substring(0,processName.indexOf('@')));

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   * dump and bring up resultant hprof in something like jprofiler which
   * allows you get 'deep size' on objects.
   * @param args main args
   */
  public static void main(String [] args) {
    RuntimeMXBean runtime = ManagementFactory.getRuntimeMXBean();
    LOG.info("vmName=" + runtime.getVmName() + ", vmVendor=" +
      runtime.getVmVendor() + ", vmVersion=" + runtime.getVmVersion());
    LOG.info("vmInputArguments=" + runtime.getInputArguments());
    MemStore memstore1 = new MemStore();
    // TODO: x32 vs x64
    long size = 0;
    final int count = 10000;
    byte [] fam = Bytes.toBytes("col");

View Full Code Here

      }


      if (cmd.equalsIgnoreCase("start")) {
        try {
          // Print out vm stats before starting up.
          RuntimeMXBean runtime = ManagementFactory.getRuntimeMXBean();
          if (runtime != null) {
            LOG.info("vmName=" + runtime.getVmName() + ", vmVendor=" +
              runtime.getVmVendor() + ", vmVersion=" + runtime.getVmVersion());
            LOG.info("vmInputArguments=" + runtime.getInputArguments());
          }
          // If 'local', defer to LocalHBaseCluster instance.  Starts master
          // and regionserver both in the one JVM.
          if (LocalHBaseCluster.isLocal(conf)) {
            final MiniZooKeeperCluster zooKeeperCluster =

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          // LocalHBaseCluster.  It manages 'local' clusters.
          if (LocalHBaseCluster.isLocal(conf)) {
            LOG.warn("Not starting a distinct region server because " +
              HConstants.CLUSTER_DISTRIBUTED + " is false");
          } else {
            RuntimeMXBean runtime = ManagementFactory.getRuntimeMXBean();
            if (runtime != null) {
              LOG.info("vmInputArguments=" + runtime.getInputArguments());
            }
            HRegionServer hrs = constructRegionServer(regionServerClass, conf);
            startRegionServer(hrs);
          }
        } catch (Throwable t) {

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    }


    private static void writePid(String pidFile) {
        try {
            if (pidFile != null) {
                RuntimeMXBean rtb = ManagementFactory.getRuntimeMXBean();
                String processName = rtb.getName();
                Pattern pattern = Pattern.compile("^([0-9]+)@.+$", Pattern.CASE_INSENSITIVE);
                Matcher matcher = pattern.matcher(processName);
                if (matcher.matches()) {
                    int pid = Integer.parseInt(matcher.group(1));
                    Writer w = new OutputStreamWriter(new FileOutputStream(pidFile));

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    protected void setupShutdown(Properties props) {
        try {
            String pidFile = props.getProperty(KARAF_SHUTDOWN_PID_FILE);
            if (pidFile != null) {
                RuntimeMXBean rtb = ManagementFactory.getRuntimeMXBean();
                String processName = rtb.getName();
                Pattern pattern = Pattern.compile("^([0-9]+)@.+$", Pattern.CASE_INSENSITIVE);
                Matcher matcher = pattern.matcher(processName);
                if (matcher.matches()) {
                    int pid = Integer.parseInt(matcher.group(1));
                    Writer w = new OutputStreamWriter(new FileOutputStream(pidFile));

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