com.ibm.wala.ipa.callgraph.propagation

Class PropagationGraph

java.lang.Object

com.ibm.wala.ipa.callgraph.propagation.PropagationGraph

All Implemented Interfaces:

com.ibm.wala.fixpoint.IFixedPointSystem<PointsToSetVariable>

public class PropagationGraph
extends Object
implements com.ibm.wala.fixpoint.IFixedPointSystem<PointsToSetVariable>

A dataflow graph implementation specialized for propagation-based pointer analysis

Constructor Summary

Constructors

Constructor and Description
PropagationGraph()

Method Summary

Methods

Modifier and Type	Method and Description
void	addStatement(com.ibm.wala.fixedpoint.impl.GeneralStatement<PointsToSetVariable> eq)
void	addStatement(com.ibm.wala.fixpoint.IFixedPointStatement<PointsToSetVariable> statement)
void	addStatement(com.ibm.wala.fixpoint.UnaryStatement<PointsToSetVariable> eq)
boolean	containsStatement(com.ibm.wala.fixpoint.IFixedPointStatement<PointsToSetVariable> eq)
boolean	containsVariable(PointsToSetVariable v)
com.ibm.wala.util.graph.NumberedGraph<PointsToSetVariable>	getAssignmentGraph() A graph of just the variables in the system.
com.ibm.wala.util.graph.Graph<PointsToSetVariable>	getFilterAssignmentGraph() A graph of just the variables in the system.
com.ibm.wala.util.graph.Graph<PointsToSetVariable>	getFlowGraphIncludingImplicitConstraints() NOTE: do not use this method unless you really know what you are doing.
int	getNumberOfStatementsThatDef(PointsToSetVariable v)
int	getNumberOfStatementsThatUse(PointsToSetVariable v) Note that this implementation consults the implicit relation for each and every operator cached.
Iterator<com.ibm.wala.fixpoint.AbstractStatement>	getStatements()
Iterator<com.ibm.wala.fixpoint.AbstractStatement>	getStatementsThatDef(PointsToSetVariable v)
Iterator<com.ibm.wala.fixpoint.AbstractStatement>	getStatementsThatUse(PointsToSetVariable v)
Iterator<PointsToSetVariable>	getVariables()
void	performVerboseAction()
void	removeStatement(com.ibm.wala.fixpoint.IFixedPointStatement<PointsToSetVariable> eq)
void	removeVariable(PointsToSetVariable p)
void	reorder()
String	spaceReport()

Methods inherited from class java.lang.Object

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

Constructor Detail

PropagationGraph

public PropagationGraph()

Method Detail

addStatement

public void addStatement(com.ibm.wala.fixedpoint.impl.GeneralStatement<PointsToSetVariable> eq)

Throws:

IllegalArgumentException - if eq is null

addStatement

public void addStatement(com.ibm.wala.fixpoint.UnaryStatement<PointsToSetVariable> eq)
                  throws IllegalArgumentException

Throws:

IllegalArgumentException

removeVariable

public void removeVariable(PointsToSetVariable p)

getStatements

public Iterator<com.ibm.wala.fixpoint.AbstractStatement> getStatements()

Specified by:

getStatements in interface com.ibm.wala.fixpoint.IFixedPointSystem<PointsToSetVariable>

removeStatement

public void removeStatement(com.ibm.wala.fixpoint.IFixedPointStatement<PointsToSetVariable> eq)
                     throws IllegalArgumentException

Specified by:

removeStatement in interface com.ibm.wala.fixpoint.IFixedPointSystem<PointsToSetVariable>

Throws:

IllegalArgumentException

reorder

public void reorder()

Specified by:

reorder in interface com.ibm.wala.fixpoint.IFixedPointSystem<PointsToSetVariable>

getStatementsThatUse

public Iterator<com.ibm.wala.fixpoint.AbstractStatement> getStatementsThatUse(PointsToSetVariable v)

Specified by:

getStatementsThatUse in interface com.ibm.wala.fixpoint.IFixedPointSystem<PointsToSetVariable>

getStatementsThatDef

public Iterator<com.ibm.wala.fixpoint.AbstractStatement> getStatementsThatDef(PointsToSetVariable v)

Specified by:

getStatementsThatDef in interface com.ibm.wala.fixpoint.IFixedPointSystem<PointsToSetVariable>

getNumberOfStatementsThatUse

public int getNumberOfStatementsThatUse(PointsToSetVariable v)

Note that this implementation consults the implicit relation for each and every operator cached. This will be inefficient if there are many implicit operators.

Specified by:

getNumberOfStatementsThatUse in interface com.ibm.wala.fixpoint.IFixedPointSystem<PointsToSetVariable>

Throws:

IllegalArgumentException - if v is null

getNumberOfStatementsThatDef

public int getNumberOfStatementsThatDef(PointsToSetVariable v)

Specified by:

getNumberOfStatementsThatDef in interface com.ibm.wala.fixpoint.IFixedPointSystem<PointsToSetVariable>

getVariables

public Iterator<PointsToSetVariable> getVariables()

Specified by:

getVariables in interface com.ibm.wala.fixpoint.IFixedPointSystem<PointsToSetVariable>

performVerboseAction

public void performVerboseAction()

containsStatement

public boolean containsStatement(com.ibm.wala.fixpoint.IFixedPointStatement<PointsToSetVariable> eq)
                          throws IllegalArgumentException

Specified by:

containsStatement in interface com.ibm.wala.fixpoint.IFixedPointSystem<PointsToSetVariable>

Throws:

IllegalArgumentException

containsVariable

public boolean containsVariable(PointsToSetVariable v)

Specified by:

containsVariable in interface com.ibm.wala.fixpoint.IFixedPointSystem<PointsToSetVariable>

addStatement

public void addStatement(com.ibm.wala.fixpoint.IFixedPointStatement<PointsToSetVariable> statement)
                  throws IllegalArgumentException,
                         com.ibm.wala.util.debug.UnimplementedError

Specified by:

addStatement in interface com.ibm.wala.fixpoint.IFixedPointSystem<PointsToSetVariable>

Throws:

IllegalArgumentException

com.ibm.wala.util.debug.UnimplementedError

getAssignmentGraph

public com.ibm.wala.util.graph.NumberedGraph<PointsToSetVariable> getAssignmentGraph()

A graph of just the variables in the system. v1 -> v2 iff there exists an assignment equation e s.t. e uses v1 and e defs v2.

getFilterAssignmentGraph

public com.ibm.wala.util.graph.Graph<PointsToSetVariable> getFilterAssignmentGraph()

A graph of just the variables in the system. v1 -> v2 iff there exists an Assingnment or Filter equation e s.t. e uses v1 and e defs v2.

getFlowGraphIncludingImplicitConstraints

public com.ibm.wala.util.graph.Graph<PointsToSetVariable> getFlowGraphIncludingImplicitConstraints()

NOTE: do not use this method unless you really know what you are doing. Functionality is fragile and may not work in the future.

spaceReport

public String spaceReport()