YieldCounterListener (Jikes RVM API)

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org.jikesrvm.adaptive.measurements.listeners
Class YieldCounterListener

java.lang.Object
  org.jikesrvm.adaptive.measurements.listeners.Listener
      org.jikesrvm.adaptive.measurements.listeners.NullListener
          org.jikesrvm.adaptive.measurements.listeners.YieldCounterListener

public final class YieldCounterListener
extends NullListener
extends NullListener

A YieldCounterListener samples yield points, and notifies an Organizer when a threshold is reached. In effect, this class provides a way to "wake up" an infrequent service periodically.

Field Summary
`private int`	`numYields`
`private int`	`totalYields`
`private int`	`yieldThreshold`

Constructor Summary
`YieldCounterListener(int yieldThreshold)` Constructor

Method Summary
`void`	`report()` Entry point to dump what has been collected.
`void`	`reset()` reset the listeners data structures
`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, setOrganizer`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Field Detail

yieldThreshold

private int yieldThreshold

numYields

private int numYields

totalYields

private int totalYields

Constructor Detail

YieldCounterListener

public YieldCounterListener(int yieldThreshold)

Constructor

Parameters:: yieldThreshold - the threshold of when to call organizer

Method Detail

update

public void update(int whereFrom)

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

Specified by:: update in class NullListener

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

report

public void report()

Description copied from class: Listener

Entry point to dump what has been collected.

Specified by:: report in class Listener

reset

public void reset()