org.apache.zookeeper.server.util

Class OSMXBean

java.lang.Object

org.apache.zookeeper.server.util.OSMXBean

public class OSMXBean
extends Object

This class is a wrapper for the implementation of com.sun.management.UnixOperatingSystemMXBean It will decide to use the sun api or its own implementation depending on the runtime (vendor) used.

Constructor Summary

Constructors

Constructor and Description
OSMXBean() Constructor.

Method Summary

Modifier and Type	Method and Description
long	getMaxFileDescriptorCount() Get the number of the maximum file descriptors the system can use.
long	getOpenFileDescriptorCount() Get the number of opened filed descriptor for the runtime jvm.
boolean	getUnix() Check if the OS is unix.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

OSMXBean

public OSMXBean()

Constructor. Get the running Operating System instance

Method Detail

getUnix

public boolean getUnix()

Check if the OS is unix. If using the IBM java runtime, this will only work for linux.

Returns:

whether this is unix or not.

getOpenFileDescriptorCount

public long getOpenFileDescriptorCount()

Get the number of opened filed descriptor for the runtime jvm. If sun java, it will use the com.sun.management interfaces. Otherwise, this methods implements it (linux only).

Returns:

number of open file descriptors for the jvm

getMaxFileDescriptorCount

public long getMaxFileDescriptorCount()

Get the number of the maximum file descriptors the system can use. If sun java, it will use the com.sun.management interfaces. Otherwise, this methods implements it (linux only).

Returns:

max number of file descriptors the operating system can use.