Package java.lang.management

Examples of java.lang.management.MemoryMXBean

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        outPW.printf(INDENT_KEY_VALUE_FORMAT, "total", formatLong(mxBean.getTotalLoadedClassCount())).println();
        outPW.printf(INDENT_KEY_VALUE_FORMAT, "unloaded", formatLong(mxBean.getUnloadedClassCount())).println();
    }

    private void dumpMemoryInformation(final PrintWriter outPW) {
        final MemoryMXBean mxBean = ManagementFactory.getMemoryMXBean();
        if( null == mxBean) {
            return;
        }
        final MemoryUsage heapMemoryUsage = mxBean.getHeapMemoryUsage();
        final MemoryUsage nonHeapMemoryUsage = mxBean.getNonHeapMemoryUsage();
        if( heapMemoryUsage != null ) {
            outPW.println("HEAP Memory:");
            outPW.printf(INDENT_KEY_VALUE_FORMAT, "commited", printMemory(heapMemoryUsage.getCommitted())).println();
            outPW.printf(INDENT_KEY_VALUE_FORMAT, "init", printMemory(heapMemoryUsage.getInit())).println();
            outPW.printf(INDENT_KEY_VALUE_FORMAT, "used", printMemory(heapMemoryUsage.getUsed())).println();
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    private void dumpGCInformation(final PrintWriter outPW) {
        final List<GarbageCollectorMXBean> mxBeans = ManagementFactory.getGarbageCollectorMXBeans();
        if( null == mxBeans || mxBeans.isEmpty()) {
            return;
        }
        final MemoryMXBean memoryMxBean = ManagementFactory.getMemoryMXBean();
        if( memoryMxBean != null ) {
            outPW.printf(INDENT_KEY_VALUE_FORMAT, "pending objects", formatLong(memoryMxBean.getObjectPendingFinalizationCount())).println();
        }
        final String gcFormat ="'%1$s' collections: %2$s\ttime: %3$s";
        outPW.println();
        for (final GarbageCollectorMXBean mxBean : mxBeans) {
            if( null == mxBean) {
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        super("memory.txt");
    }

    @Override
    protected void writeDump(OutputStreamWriter outputStream) throws Exception {
        MemoryMXBean memoryMXBean = ManagementFactory.getMemoryMXBean();

        outputStream.write("Number of objects waiting finalization: " + memoryMXBean.getObjectPendingFinalizationCount() + "\n\n");

        outputStream.write("Heap:\n");
        outputStream.write("\tInit:      " + memoryMXBean.getHeapMemoryUsage().getInit() + "\n");
        outputStream.write("\tUser:      " + memoryMXBean.getHeapMemoryUsage().getUsed() + "\n");
        outputStream.write("\tCommitted: " + memoryMXBean.getHeapMemoryUsage().getCommitted() + "\n");
        outputStream.write("\tMax:       " + memoryMXBean.getHeapMemoryUsage().getMax() + "\n");

        outputStream.write("Non-Heap: \n");
        outputStream.write("\tInit:      " + memoryMXBean.getNonHeapMemoryUsage().getInit() + "\n");
        outputStream.write("\tUser:      " + memoryMXBean.getNonHeapMemoryUsage().getUsed() + "\n");
        outputStream.write("\tCommitted: " + memoryMXBean.getNonHeapMemoryUsage().getCommitted() + "\n");
        outputStream.write("\tMax:       " + memoryMXBean.getNonHeapMemoryUsage().getMax() + "\n");
    }
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        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);
        }
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        return kernel.getBootTime();
    }

    public Stats getStats() {
        RuntimeMXBean runmxbean = ManagementFactory.getRuntimeMXBean();
        MemoryMXBean memmxbean = ManagementFactory.getMemoryMXBean();
        MemoryUsage memUsage = memmxbean.getHeapMemoryUsage();
        CountStatisticImpl upTime;
        BoundedRangeStatisticImpl heapSize;

        if (stats == null) {
            stats = new JVMStatsImpl();
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        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("Pid", maxNameLen, getPid());
        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);
        }
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  public String admin() {
    return OUTCOME_ADMIN;
  }

  public boolean getUpdateMemory() {
    MemoryMXBean memoryBean = ManagementFactory.getMemoryMXBean();
    MemoryUsage memory = memoryBean.getHeapMemoryUsage();
    memoryUsage = new DefaultBoundedRangeModel(Long.valueOf(memory.getUsed()/1024).intValue(),
        0, 0, Long.valueOf(memory.getMax()/1024).intValue());
    int percentValue = memoryUsage.getValue()/(memoryUsage.getMaximum()*100);
    if (percentValue <= 80) {
      state = "ok";
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        return kernel.getBootTime();
    }

    public Stats getStats() {
        RuntimeMXBean runmxbean = ManagementFactory.getRuntimeMXBean();
        MemoryMXBean memmxbean = ManagementFactory.getMemoryMXBean();
        MemoryUsage memUsage = memmxbean.getHeapMemoryUsage();
        CountStatisticImpl upTime;
        BoundedRangeStatisticImpl heapSize;
       
        if (stats == null) {
            stats = new JVMStatsImpl();
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    }
    reader.close();
  }

  public static void setupJvmMetrics() {
    final MemoryMXBean memoryMXBean = ManagementFactory.getMemoryMXBean();
    final OperatingSystemMXBean operatingSystemMXBean = ManagementFactory.getOperatingSystemMXBean();

    Metrics.newGauge(new MetricName(ORG_APACHE_BLUR, SYSTEM, LOAD_AVERAGE), new Gauge<Double>() {
      @Override
      public Double value() {
        return operatingSystemMXBean.getSystemLoadAverage();
      }
    });
    Metrics.newGauge(new MetricName(ORG_APACHE_BLUR, JVM, HEAP_USED), new Gauge<Long>() {
      @Override
      public Long value() {
        MemoryUsage usage = memoryMXBean.getHeapMemoryUsage();
        return usage.getUsed();
      }
    });
    Method processCpuTimeMethod = null;
    for (Method method : operatingSystemMXBean.getClass().getDeclaredMethods()) {
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    final AtomicReference<BlurException> error = new AtomicReference<BlurException>();
    final AtomicBoolean fail = new AtomicBoolean();

    System.gc();
    System.gc();
    MemoryMXBean memoryMXBean = ManagementFactory.getMemoryMXBean();
    MemoryUsage usage = memoryMXBean.getHeapMemoryUsage();
    long max = usage.getMax();
    System.out.println("Max Heap [" + max + "]");
    long used = usage.getUsed();
    System.out.println("Used Heap [" + used + "]");
    long limit = (long) (max * 0.80);
 
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