org.jikesrvm.adaptive.measurements.listeners

Class NullListener

java.lang.Object

org.jikesrvm.adaptive.measurements.listeners.Listener

org.jikesrvm.adaptive.measurements.listeners.NullListener

Direct Known Subclasses:

CallDensityListener, YieldCounterListener

public abstract class NullListener
extends Listener

A NullListener is an object that is invoked when online measurement information must be collected.

Defines update's interface.

Constructor Summary

Constructors

Constructor and Description
NullListener()

Method Summary

Modifier and Type	Method and Description
abstract void	update(int whereFrom) This method is called when its time to record that a yield point has occurred.

Methods inherited from class org.jikesrvm.adaptive.measurements.listeners.Listener

activate, activateOrganizer, isActive, passivate, report, reset, setOrganizer

Methods inherited from class java.lang.Object

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

Constructor Detail

NullListener

public NullListener()

Method Detail

update

public abstract void update(int whereFrom)

This method is called when its time to record that a yield point has occurred.

Parameters:

whereFrom - Was this a yieldpoint in a PROLOGUE, BACKEDGE, or EPILOGUE?