Examples of OperatingSystemMXBean

com.sun.management.OperatingSystemMXBean
Platform-specific management interface for the operating system on which the Java virtual machine is running.
The OperatingSystemMXBean object returned by {@link java.lang.management.ManagementFactory#getOperatingSystemMXBean()}is an instance of the implementation class of this interface or {@link UnixOperatingSystemMXBean} interface depending onits underlying operating system. @author Mandy Chung @since 1.5
java.lang.management.OperatingSystemMXBean
The management interface for the operating system on which the Java virtual machine is running.
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#getOperatingSystemMXBean} method orfrom the {@link ManagementFactory#getPlatformMBeanServer platform MBeanServer} method.
The ObjectName for uniquely identifying the MXBean for the operating system within an MBeanServer is:
{@link ManagementFactory#OPERATING_SYSTEM_MXBEAN_NAME java.lang:type=OperatingSystem}

This interface defines several convenient methods for accessing system properties about the operating system on which the Java virtual machine is running. @see JMX Specification. @see Ways to Access MXBeans @author Mandy Chung @version 1.11, 12/09/05 @since 1.5

Examples of java.lang.management.OperatingSystemMXBean

    }


    public void tearDown() throws Exception {
        LOG.info("TearDown started");


        OperatingSystemMXBean osMbean = ManagementFactory.getOperatingSystemMXBean();
        if (osMbean != null && osMbean instanceof UnixOperatingSystemMXBean) {
            UnixOperatingSystemMXBean unixos = (UnixOperatingSystemMXBean) osMbean;
            LOG.info("fdcount after test is: " + unixos.getOpenFileDescriptorCount());
        }

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Examples of java.lang.management.OperatingSystemMXBean

    writeJsonObjectToResponse(memStats, request);
  }


  private void processOsStats(DatabusRequest request) throws IOException
  {
    OperatingSystemMXBean osStats = ManagementFactory.getOperatingSystemMXBean();
    writeJsonObjectToResponse(osStats, request);
  }

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Examples of java.lang.management.OperatingSystemMXBean

        /* some useful information - log the number of fds used before
         * and after a test is run. Helps to verify we are freeing resources
         * correctly. Unfortunately this only works on unix systems (the
         * only place sun has implemented as part of the mgmt bean api.
         */
        OperatingSystemMXBean osMbean =
            ManagementFactory.getOperatingSystemMXBean();
        if (osMbean != null && osMbean instanceof UnixOperatingSystemMXBean) {
            UnixOperatingSystemMXBean unixos =
                (UnixOperatingSystemMXBean)osMbean;
            LOG.info("Initial fdcount is: "

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Examples of java.lang.management.OperatingSystemMXBean

        /* some useful information - log the number of fds used before
         * and after a test is run. Helps to verify we are freeing resources
         * correctly. Unfortunately this only works on unix systems (the
         * only place sun has implemented as part of the mgmt bean api.
         */
        OperatingSystemMXBean osMbean =
            ManagementFactory.getOperatingSystemMXBean();
        if (osMbean != null && osMbean instanceof UnixOperatingSystemMXBean) {
            UnixOperatingSystemMXBean unixos =
                (UnixOperatingSystemMXBean)osMbean;
            LOG.info("fdcount after test is: "

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Examples of java.lang.management.OperatingSystemMXBean

         String cname = oname.getCanonicalName();
         PlatformMBeanIDC mpidc = new PlatformMBeanIDC(server, oname, mbean);
         mbeans.put(cname, mpidc);
      }
      // OperatingSystemMXBean
      OperatingSystemMXBean osbean = ManagementFactory.getOperatingSystemMXBean();
      ObjectName osname = new ObjectName(ManagementFactory.OPERATING_SYSTEM_MXBEAN_NAME);
      PlatformMBeanIDC osidc = new PlatformMBeanIDC(server, osname, osbean);
      mbeans.put(osname.getCanonicalName(), osidc);


      // RuntimeMXBean

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Examples of java.lang.management.OperatingSystemMXBean

  public void test(TestHarness h)
  {
    try
      {
  Exception caught = null;
  OperatingSystemMXBean bean = ManagementFactory.getOperatingSystemMXBean();


  bg.install();


  // Check getName
        caught = null;
        try
          {
            bean.getName();
          }
        catch (Exception ex)
          {
            caught = ex;
          }
        h.check(caught instanceof SecurityException, "name");


  // Check getArch
        caught = null;
        try
          {
            bean.getArch();
          }
        catch (Exception ex)
          {
            caught = ex;
          }
        h.check(caught instanceof SecurityException, "arch");


  // Check getVersion
        caught = null;
        try
          {
            bean.getVersion();
          }
        catch (Exception ex)
          {
            caught = ex;
          }

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Examples of java.lang.management.OperatingSystemMXBean

     *
     * @throws Throwable
     */
    @Test
    public void testClientCleanup() throws Throwable {
        OperatingSystemMXBean osMbean =
            ManagementFactory.getOperatingSystemMXBean();
        if (osMbean == null 
                || !(osMbean instanceof UnixOperatingSystemMXBean))
        {
            LOG.warn("skipping testClientCleanup, only available on Unix");

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Examples of java.lang.management.OperatingSystemMXBean


    protected Object doExecute() throws Exception {
        int maxNameLen;


        RuntimeMXBean runtime = ManagementFactory.getRuntimeMXBean();
        OperatingSystemMXBean os = ManagementFactory.getOperatingSystemMXBean();
        ThreadMXBean threads = ManagementFactory.getThreadMXBean();
        MemoryMXBean mem = ManagementFactory.getMemoryMXBean();
        ClassLoadingMXBean cl = ManagementFactory.getClassLoadingMXBean();


        //
        // print Karaf informations
        //
        maxNameLen = 25;
        System.out.println("Karaf");
        printValue("Karaf version", maxNameLen, System.getProperty("karaf.version"));
        printValue("Karaf home", maxNameLen, System.getProperty("karaf.home"));
        printValue("Karaf base", maxNameLen, System.getProperty("karaf.base"));
        printValue("OSGi Framework", maxNameLen, bundleContext.getBundle(0).getSymbolicName() + " - " +
                bundleContext.getBundle(0).getVersion());
        System.out.println();


        System.out.println("JVM");
        printValue("Java Virtual Machine", maxNameLen, runtime.getVmName() + " version " + runtime.getVmVersion());
        printValue("Version", maxNameLen, System.getProperty("java.version"));
        printValue("Vendor", maxNameLen, runtime.getVmVendor());
        printValue("Uptime", maxNameLen, printDuration(runtime.getUptime()));
        try {
            printValue("Process CPU time", maxNameLen, printDuration(getSunOsValueAsLong(os, "getProcessCpuTime") / 1000000));
        } catch (Throwable t) {
        }
        printValue("Total compile time", maxNameLen, printDuration(ManagementFactory.getCompilationMXBean().getTotalCompilationTime()));


        System.out.println("Threads");
        printValue("Live threads", maxNameLen, Integer.toString(threads.getThreadCount()));
        printValue("Daemon threads", maxNameLen, Integer.toString(threads.getDaemonThreadCount()));
        printValue("Peak", maxNameLen, Integer.toString(threads.getPeakThreadCount()));
        printValue("Total started", maxNameLen, Long.toString(threads.getTotalStartedThreadCount()));


        System.out.println("Memory");
        printValue("Current heap size", maxNameLen, printSizeInKb(mem.getHeapMemoryUsage().getUsed()));
        printValue("Maximum heap size", maxNameLen, printSizeInKb(mem.getHeapMemoryUsage().getMax()));
        printValue("Committed heap size", maxNameLen, printSizeInKb(mem.getHeapMemoryUsage().getCommitted()));
        printValue("Pending objects", maxNameLen, Integer.toString(mem.getObjectPendingFinalizationCount()));
        for (GarbageCollectorMXBean gc : ManagementFactory.getGarbageCollectorMXBeans()) {
            String val = "Name = '" + gc.getName() + "', Collections = " + gc.getCollectionCount() + ", Time = " + printDuration(gc.getCollectionTime());
            printValue("Garbage collector", maxNameLen, val);
        }


        System.out.println("Classes");
        printValue("Current classes loaded", maxNameLen, printLong(cl.getLoadedClassCount()));
        printValue("Total classes loaded", maxNameLen, printLong(cl.getTotalLoadedClassCount()));
        printValue("Total classes unloaded", maxNameLen, printLong(cl.getUnloadedClassCount()));


        System.out.println("Operating system");
        printValue("Name", maxNameLen, os.getName() + " version " + os.getVersion());
        printValue("Architecture", maxNameLen, os.getArch());
        printValue("Processors", maxNameLen, Integer.toString(os.getAvailableProcessors()));
        try {
            printValue("Total physical memory", maxNameLen, printSizeInKb(getSunOsValueAsLong(os, "getTotalPhysicalMemorySize")));
            printValue("Free physical memory", maxNameLen, printSizeInKb(getSunOsValueAsLong(os, "getFreePhysicalMemorySize")));
            printValue("Committed virtual memory", maxNameLen, printSizeInKb(getSunOsValueAsLong(os, "getCommittedVirtualMemorySize")));
            printValue("Total swap space", maxNameLen, printSizeInKb(getSunOsValueAsLong(os, "getTotalSwapSpaceSize")));

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Examples of java.lang.management.OperatingSystemMXBean

   */
  public static SimpleOrderedMap<Object> getSystemInfo() throws Exception 
  {
    SimpleOrderedMap<Object> info = new SimpleOrderedMap<Object>();
    
    OperatingSystemMXBean os = ManagementFactory.getOperatingSystemMXBean();
    info.add( "name", os.getName() );
    info.add( "version", os.getVersion() );
    info.add( "arch", os.getArch() );


    // Java 1.6
    addGetterIfAvaliable( os, "systemLoadAverage", info );


    // com.sun.management.UnixOperatingSystemMXBean
    addGetterIfAvaliable( os, "openFileDescriptorCount", info );
    addGetterIfAvaliable( os, "maxFileDescriptorCount", info );


    // com.sun.management.OperatingSystemMXBean
    addGetterIfAvaliable( os, "committedVirtualMemorySize", info );
    addGetterIfAvaliable( os, "totalPhysicalMemorySize", info );
    addGetterIfAvaliable( os, "totalSwapSpaceSize", info );
    addGetterIfAvaliable( os, "processCpuTime", info );


    try { 
      if( !os.getName().toLowerCase(Locale.ENGLISH).startsWith( "windows" ) ) {
        // Try some command line things
        info.add( "uname",  execute( "uname -a" ) );
        info.add( "ulimit", execute( "ulimit -n" ) );
        info.add( "uptime", execute( "uptime" ) );
      }

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Examples of java.lang.management.OperatingSystemMXBean


public class SystemInfoHandlerTest extends LuceneTestCase {


  public void testMagickGetter() {


    OperatingSystemMXBean os = ManagementFactory.getOperatingSystemMXBean();


    // make one directly
    SimpleOrderedMap<Object> info = new SimpleOrderedMap<Object>();
    info.add( "name", os.getName() );
    info.add( "version", os.getVersion() );
    info.add( "arch", os.getArch() );


    // make another using addGetterIfAvaliable 
    SimpleOrderedMap<Object> info2 = new SimpleOrderedMap<Object>();
    SystemInfoHandler.addGetterIfAvaliable( os, "name", info2 );
    SystemInfoHandler.addGetterIfAvaliable( os, "version", info2 );

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