Example usage for java.lang.management OperatingSystemMXBean getClass

Introduction

In this page you can find the example usage for java.lang.management OperatingSystemMXBean getClass.

Prototype

@HotSpotIntrinsicCandidate
public final native Class<?> getClass();

Source Link

Document

Returns the runtime class of this Object .

Usage

From source file:api.Status.java

public static Result getStatus() {
    ObjectNode metrics = Json.newObject();

    OperatingSystemMXBean os = ManagementFactory.getOperatingSystemMXBean();
    TreeMap<String, Object> values = new TreeMap<String, Object>();
    for (Method method : os.getClass().getDeclaredMethods()) {
        method.setAccessible(true);/*  ww  w  .j  av a2 s .  co  m*/
        if (method.getName().startsWith("get") && Modifier.isPublic(method.getModifiers())) {
            Object value;
            try {
                value = method.invoke(os);
                values.put(method.getName(), value);
            } catch (Exception e) {
                Logger.warn("Error when invoking " + os.getClass().getName()
                        + " (OperatingSystemMXBean) method " + method.getName() + ": " + e);
            } // try
        } // if
    } // for

    metrics.put("jvmLoad", (Double) values.get("getProcessCpuLoad"));
    metrics.put("cpuLoad", (Double) values.get("getSystemCpuLoad"));
    metrics.put("openFD", (Long) values.get("getOpenFileDescriptorCount"));
    metrics.put("maxFD", (Long) values.get("getMaxFileDescriptorCount"));
    metrics.put("freeMemory", (Long) values.get("getFreePhysicalMemorySize"));
    metrics.put("totalMemory", (Long) values.get("getTotalPhysicalMemorySize"));

    return ok(metrics.toString());
}

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From source file:net.bull.javamelody.internal.model.JavaInformations.java

private static boolean isSunUnixMBean(OperatingSystemMXBean operatingSystem) {
    for (final Class<?> inter : operatingSystem.getClass().getInterfaces()) {
        if ("com.sun.management.UnixOperatingSystemMXBean".equals(inter.getName())) {
            return true;
        }//  ww w . j  a  v a 2  s .  com
    }
    return false;
}

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From source file:net.ftb.util.OSUtils.java

private static long getOSMemory(String methodName, String warning) {
    long ram = 0;

    OperatingSystemMXBean operatingSystemMXBean = ManagementFactory.getOperatingSystemMXBean();
    Method m;//www . j  ava 2s .  co  m
    try {
        m = operatingSystemMXBean.getClass().getDeclaredMethod(methodName);
        m.setAccessible(true);
        Object value = m.invoke(operatingSystemMXBean);
        if (value != null) {
            ram = Long.valueOf(value.toString()) / 1024 / 1024;
        } else {
            Logger.logWarn(warning);
            ram = 1024;
        }
    } catch (Exception e) {
        Logger.logError("Error while getting OS memory info", e);
    }

    return ram;
}

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From source file:net.centro.rtb.monitoringcenter.infos.OperatingSystemInfo.java

public static OperatingSystemInfo create() {
    OperatingSystemInfo operatingSystemInfo = new OperatingSystemInfo();

    OperatingSystemMXBean operatingSystemMXBean = ManagementFactory.getOperatingSystemMXBean();

    operatingSystemInfo.name = operatingSystemMXBean.getName();
    operatingSystemInfo.version = operatingSystemMXBean.getVersion();

    if (SystemUtils.IS_OS_LINUX) {
        operatingSystemInfo.distributionName = resolveLinuxDistributionName();
    }//ww  w .  jav  a 2  s  . c o  m

    operatingSystemInfo.architecture = operatingSystemMXBean.getArch();
    operatingSystemInfo.numberOfLogicalProcessors = operatingSystemMXBean.getAvailableProcessors();

    if (com.sun.management.OperatingSystemMXBean.class.isAssignableFrom(operatingSystemMXBean.getClass())) {
        com.sun.management.OperatingSystemMXBean sunOsMxBean = com.sun.management.OperatingSystemMXBean.class
                .cast(operatingSystemMXBean);
        operatingSystemInfo.physicalMemorySizeInBytes = sunOsMxBean.getTotalPhysicalMemorySize();
        operatingSystemInfo.swapSpaceSizeInBytes = sunOsMxBean.getTotalSwapSpaceSize();
    }

    Map<String, Long> diskSpaceInBytesByRootPaths = new HashMap<>();
    for (File rootFile : File.listRoots()) {
        diskSpaceInBytesByRootPaths.put(rootFile.getAbsolutePath(), rootFile.getTotalSpace());
    }
    operatingSystemInfo.diskSpaceInBytesByRootPaths = diskSpaceInBytesByRootPaths;

    return operatingSystemInfo;
}

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From source file:net.bull.javamelody.internal.model.JavaInformations.java

private static boolean isSunOsMBean(OperatingSystemMXBean operatingSystem) {
    // on ne teste pas operatingSystem instanceof com.sun.management.OperatingSystemMXBean
    // car le package com.sun n'existe  priori pas sur une jvm tierce
    final String className = operatingSystem.getClass().getName();
    return "com.sun.management.OperatingSystem".equals(className)
            || "com.sun.management.UnixOperatingSystem".equals(className)
            // sun.management.OperatingSystemImpl pour java 8
            || "sun.management.OperatingSystemImpl".equals(className);
}

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From source file:org.jenkinsci.remoting.engine.HandlerLoopbackLoadStress.java

private static Method _getProcessCpuTime(OperatingSystemMXBean operatingSystemMXBean) {
    Method getProcessCpuTime;/*ww  w .j  a  v a2 s.  co m*/
    try {
        getProcessCpuTime = operatingSystemMXBean.getClass().getMethod("getProcessCpuTime");
        getProcessCpuTime.setAccessible(true);
    } catch (ClassCastException e) {
        getProcessCpuTime = null;
    } catch (NoSuchMethodException e) {
        getProcessCpuTime = null;
    }
    return getProcessCpuTime;
}

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