LocalVmManager

extends Object

java.lang.Object
↳	sun.jvmstat.perfdata.monitor.protocol.local.LocalVmManager

Class Overview

Class for managing the LocalMonitoredVm instances on the local system.

This class is responsible for the mechanism that detects the active HotSpot Java Virtual Machines on the local host and possibly for a specific user. The ability to detect all possible HotSpot Java Virtual Machines on the local host may be limited by the permissions of the principal running this JVM.

Summary

Public Constructors
	LocalVmManager() Creates a LocalVmManager instance for the local system.
	LocalVmManager(String user) Creates a LocalVmManager instance for the given user.

Public Methods
synchronized Set<Integer>	activeVms() Return the current set of monitorable Java Virtual Machines.

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Inherited Methods

From class java.lang.Object

Object	clone() Creates and returns a copy of this object.
boolean	equals(Object obj) Indicates whether some other object is "equal to" this one.
void	finalize() Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.
final Class<?>	getClass() Returns the runtime class of this `Object`.
int	hashCode() Returns a hash code value for the object.
final void	notify() Wakes up a single thread that is waiting on this object's monitor.
final void	notifyAll() Wakes up all threads that are waiting on this object's monitor.
String	toString() Returns a string representation of the object.
final void	wait() Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object.
final void	wait(long timeout, int nanos) Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object, or some other thread interrupts the current thread, or a certain amount of real time has elapsed.
final void	wait(long timeout) Causes the current thread to wait until either another thread invokes the `notify()` method or the `notifyAll()` method for this object, or a specified amount of time has elapsed.

Public Constructors

public LocalVmManager ()

Creates a LocalVmManager instance for the local system.

Manages LocalMonitoredVm instances for which the principal has appropriate permissions.

public LocalVmManager (String user)

Creates a LocalVmManager instance for the given user.

Manages LocalMonitoredVm instances for all JVMs owned by the specified user.

Parameters

user	the name of the user

Public Methods

public synchronized Set<Integer> activeVms ()

Return the current set of monitorable Java Virtual Machines.

The set returned by this method depends on the user name passed to the constructor. If no user name was specified, then this method will return all candidate JVMs on the system. Otherwise, only the JVMs for the given user will be returned. This assumes that principal associated with this JVM has the appropriate permissions to access the target set of JVMs.

Returns

Set - the Set of monitorable Java Virtual Machines

Classes