org.jikesrvm.adaptive.database.callgraph
Class WeightedCallTargets.SingleTarget

java.lang.Object
  org.jikesrvm.adaptive.database.callgraph.WeightedCallTargets
      org.jikesrvm.adaptive.database.callgraph.WeightedCallTargets.SingleTarget

Enclosing class:

WeightedCallTargets

private static final class WeightedCallTargets.SingleTarget
extends WeightedCallTargets

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

target

private final RVMMethod target

weight

private float weight

WeightedCallTargets.SingleTarget

WeightedCallTargets.SingleTarget(RVMMethod t,
                                 double w)

visitTargets

public void visitTargets(WeightedCallTargets.Visitor func)

Description copied from class: WeightedCallTargets

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 WeightedCallTargets

Parameters:

func - the function to evaluate on each target

augmentCount

public WeightedCallTargets augmentCount(RVMMethod t,
                                        double v)

Description copied from class: WeightedCallTargets

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 WeightedCallTargets accordingly to avoid losing the update.

Specified by:

augmentCount in class WeightedCallTargets

decay

public void decay(double rate)

Description copied from class: WeightedCallTargets

Decay the weights of all call targets by the specified amount

Specified by:

decay in class WeightedCallTargets

Parameters:

rate - the value to decay by

totalWeight

public double totalWeight()

Description copied from class: WeightedCallTargets

totalWeight of all call targets

Specified by:

totalWeight in class WeightedCallTargets

filter

public WeightedCallTargets filter(RVMMethod goal,
                                  boolean isPrecise)

Specified by:

filter in class WeightedCallTargets

Parameters:

goal - RVMMethod that is the statically possible target

isPrecise - whether or not goal is a precise target, or should be interpreted as being the root of a virtual method family, any of which are statically possible.

Returns:

the filtered call targets or null if no such target exists