This class is not part of the public API.

Class: sun.management.OperatingSystemImpl

Implementation class for the operating system. Standard and committed hotspot-specific metrics if any. ManagementFactory.getOperatingSystemMXBean() returns an instance of this class.

Inheritance

Superclass tree: Implements:

Methods

  • OperatingSystemImpltop

    protected OperatingSystemImpl(VMManagement vm)
    Constructor of OperatingSystemImpl class.
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  • getArchtop

    public String getArch()
    Returns the operating system architecture. This method is equivalent to System.getProperty("os.arch").
    Return:
    @return the operating system architecture.
    Specified by:
    getArch from OperatingSystemMXBean
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  • getAvailableProcessorstop

    public int getAvailableProcessors()
    Returns the number of processors available to the Java virtual machine. This method is equivalent to the Runtime.availableProcessors() method.

    This value may change during a particular invocation of the virtual machine.

    Return:
    @return the number of processors available to the virtual machine; never smaller than one.
    Specified by:
    getAvailableProcessors from OperatingSystemMXBean
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  • getNametop

    public String getName()
    Returns the operating system name. This method is equivalent to System.getProperty("os.name").
    Return:
    @return the operating system name.
    Specified by:
    getName from OperatingSystemMXBean
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  • getSystemLoadAveragetop

    public double getSystemLoadAverage()
    Returns the system load average for the last minute. The system load average is the sum of the number of runnable entities queued to the available processors and the number of runnable entities running on the available processors averaged over a period of time. The way in which the load average is calculated is operating system specific but is typically a damped time-dependent average.

    If the load average is not available, a negative value is returned.

    This method is designed to provide a hint about the system load and may be queried frequently. The load average may be unavailable on some platform where it is expensive to implement this method.

    Return:
    @return the system load average; or a negative value if not available.
    Specified by:
    getSystemLoadAverage from OperatingSystemMXBean
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  • getVersiontop

    public String getVersion()
    Returns the operating system version. This method is equivalent to System.getProperty("os.version").
    Return:
    @return the operating system version.
    Specified by:
    getVersion from OperatingSystemMXBean
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Fields

  • jvm

    final private VMManagement jvm

  • loadavg

    private double[] loadavg

  • unsafe

    static final private Unsafe unsafe