org.jikesrvm.adaptive.util

Class UnResolvedWeightedCallTargets.UnResolvedSingleTarget

java.lang.Object

org.jikesrvm.adaptive.util.UnResolvedWeightedCallTargets

org.jikesrvm.adaptive.util.UnResolvedWeightedCallTargets.UnResolvedSingleTarget

Enclosing class:

UnResolvedWeightedCallTargets

private static final class UnResolvedWeightedCallTargets.UnResolvedSingleTarget
extends UnResolvedWeightedCallTargets

An implementation for storing a call site distribution that has a single target.

Nested Class Summary

Nested classes/interfaces inherited from class org.jikesrvm.adaptive.util.UnResolvedWeightedCallTargets

UnResolvedWeightedCallTargets.Visitor

Field Summary

Fields

Modifier and Type	Field and Description
private MethodReference	target
private float	weight

Constructor Summary

Constructors

Constructor and Description
UnResolvedSingleTarget(MethodReference t, double w)

Method Summary

Modifier and Type	Method and Description
UnResolvedWeightedCallTargets	augmentCount(MethodReference t, double v) Augment the weight associated with the argument method by the argument amount.
void	decay(double rate) Decay the weights of all call targets by the specified amount
UnResolvedWeightedCallTargets	filter(MethodReference goal)
double	totalWeight()
void	visitTargets(UnResolvedWeightedCallTargets.Visitor func) Iterate over all of the targets, evaluating the argument function on each edge.

Methods inherited from class org.jikesrvm.adaptive.util.UnResolvedWeightedCallTargets

create, incrementCount

Methods inherited from class java.lang.Object

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

Field Detail

target

private final MethodReference target

weight

private float weight

Constructor Detail

UnResolvedSingleTarget

UnResolvedSingleTarget(MethodReference t,
                       double w)

Method Detail

visitTargets

public void visitTargets(UnResolvedWeightedCallTargets.Visitor func)

Description copied from class: UnResolvedWeightedCallTargets

Iterate over all of the targets, evaluating the argument function on each edge. NOTE: We guarantee that the targets will be iterated in monotonically decreasing edge weight. This simplifies the coding of the inlining clients that consume this information.

Specified by:

visitTargets in class UnResolvedWeightedCallTargets

Parameters:

func - the function to evaluate on each target

augmentCount

public UnResolvedWeightedCallTargets augmentCount(MethodReference t,
                                                  double v)

Description copied from class: UnResolvedWeightedCallTargets

Augment the weight associated with the argument method by the argument amount. NOTE: This method may change the representation of the target method. The caller must be sure to update their backing store of UnResolvedWeightedCallTargets accordingly to avoid losing the update.

Specified by:

augmentCount in class UnResolvedWeightedCallTargets

Parameters:

t - the target method

v - the amount to add

Returns:

the object representing the method's targets

decay

public void decay(double rate)

Description copied from class: UnResolvedWeightedCallTargets

Decay the weights of all call targets by the specified amount

Specified by:

decay in class UnResolvedWeightedCallTargets

Parameters:

rate - the value to decay by

totalWeight

public double totalWeight()

Specified by:

totalWeight in class UnResolvedWeightedCallTargets

Returns:

total weight of all call targets

filter

public UnResolvedWeightedCallTargets filter(MethodReference goal)

Specified by:

filter in class UnResolvedWeightedCallTargets

Parameters:

goal - MethodReference that is the only statically possible target

Returns:

the filtered call targets or null if no such target exists