Package com.ibm.wala.ipa.slicer.thin

Class CISlicer

java.lang.Object

com.ibm.wala.ipa.slicer.thin.CISlicer

Direct Known Subclasses:

ThinSlicer

public class CISlicer
extends Object

A cheap, context-insensitive slicer based on reachability over a custom SDG.

This is a prototype implementation; not tuned.

Currently supports backward slices only.

TODO: Introduce a slicer interface common between this and the CS slicer. TODO: This hasn't been tested much. Need regression tests.

Constructor Summary

Constructors

Constructor	Description
CISlicer(CallGraph cg, PointerAnalysis<InstanceKey> pa, ModRef<InstanceKey> modRef, Slicer.DataDependenceOptions dOptions, Slicer.ControlDependenceOptions cOptions)
CISlicer(CallGraph cg, PointerAnalysis<InstanceKey> pa, Slicer.DataDependenceOptions dOptions, Slicer.ControlDependenceOptions cOptions)
CISlicer(SDG<InstanceKey> sdg, PointerAnalysis<InstanceKey> pa, ModRef<InstanceKey> modRef)

Method Summary

Modifier and Type	Method	Description
Collection<Statement>	computeBackwardThinSlice(Statement seed)
Collection<Statement>	computeBackwardThinSlice(Collection<Statement> seeds)
static Map<Statement,Set<PointerKey>>	scanForMod(SDG<InstanceKey> sdg, PointerAnalysis<InstanceKey> pa)	Compute the set of pointer keys each statement mods
static Map<Statement,Set<PointerKey>>	scanForMod(SDG<InstanceKey> sdg, PointerAnalysis<InstanceKey> pa, boolean ignoreAllocHeapDefs, ModRef<InstanceKey> modRef)	Compute the set of pointer keys each statement mods.
static Map<Statement,Set<PointerKey>>	scanForMod(SDG<InstanceKey> sdg, PointerAnalysis<InstanceKey> pa, ModRef<InstanceKey> modRef)	Compute the set of pointer keys each statement mods
static Map<Statement,Set<PointerKey>>	scanForRef(SDG<InstanceKey> sdg, PointerAnalysis<InstanceKey> pa)	Compute the set of pointer keys each statement refs
static Map<Statement,Set<PointerKey>>	scanForRef(SDG<InstanceKey> sdg, PointerAnalysis<InstanceKey> pa, ModRef<InstanceKey> modRef)	Compute the set of PointerKeys each statement refs.Be careful to avoid eager PDG construction here! That means ..

Methods inherited from class java.lang.Object

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

Constructor Details

CISlicer

public CISlicer(CallGraph cg,
 PointerAnalysis<InstanceKey> pa,
 Slicer.DataDependenceOptions dOptions,
 Slicer.ControlDependenceOptions cOptions)

CISlicer

public CISlicer(CallGraph cg,
 PointerAnalysis<InstanceKey> pa,
 ModRef<InstanceKey> modRef,
 Slicer.DataDependenceOptions dOptions,
 Slicer.ControlDependenceOptions cOptions)
         throws IllegalArgumentException

Throws:

IllegalArgumentException

CISlicer

public CISlicer(SDG<InstanceKey> sdg,
 PointerAnalysis<InstanceKey> pa,
 ModRef<InstanceKey> modRef)

Method Details

computeBackwardThinSlice

public Collection<Statement> computeBackwardThinSlice(Statement seed)

computeBackwardThinSlice

public Collection<Statement> computeBackwardThinSlice(Collection<Statement> seeds)

scanForMod

public static Map<Statement,Set<PointerKey>> scanForMod(SDG<InstanceKey> sdg,
 PointerAnalysis<InstanceKey> pa)

Compute the set of pointer keys each statement mods

scanForRef

public static Map<Statement,Set<PointerKey>> scanForRef(SDG<InstanceKey> sdg,
 PointerAnalysis<InstanceKey> pa)

Compute the set of pointer keys each statement refs

scanForMod

public static Map<Statement,Set<PointerKey>> scanForMod(SDG<InstanceKey> sdg,
 PointerAnalysis<InstanceKey> pa,
 ModRef<InstanceKey> modRef)

Compute the set of pointer keys each statement mods

scanForMod

public static Map<Statement,Set<PointerKey>> scanForMod(SDG<InstanceKey> sdg,
 PointerAnalysis<InstanceKey> pa,
 boolean ignoreAllocHeapDefs,
 ModRef<InstanceKey> modRef)

Compute the set of pointer keys each statement mods. Be careful to avoid eager PDG construction here! That means .. don't iterate over SDG statements!

scanForRef

public static Map<Statement,Set<PointerKey>> scanForRef(SDG<InstanceKey> sdg,
 PointerAnalysis<InstanceKey> pa,
 ModRef<InstanceKey> modRef)

Compute the set of PointerKeys each statement refs.Be careful to avoid eager PDG construction here! That means .. don't iterate over SDG statements!