com.ibm.wala.ssa

Class SSACache

java.lang.Object

com.ibm.wala.ssa.SSACache

public class SSACache
extends Object

A mapping from IMethod -> SSAOptions -> SoftReference -> Something This doesn't work very well ... GCs don't do such a great job with SoftReferences ... revamp it.

Constructor Summary

Constructors

Constructor and Description
SSACache(IRFactory<IMethod> factory)

Method Summary

Methods

Modifier and Type	Method and Description
DefUse	findOrCreateDU(IMethod m, Context c, SSAOptions options)
DefUse	findOrCreateDU(IR ir, Context C)
IR	findOrCreateIR(IMethod m, Context c, SSAOptions options)
void	invalidate(IMethod method, Context c) Invalidate all cached information for a pair
void	invalidateDU(IMethod method, Context c) Invalidate the cached DefUse for a pair
void	invalidateIR(IMethod method, Context c) Invalidate the cached IR for a pair
void	wipe() The existence of this is unfortunate.

Methods inherited from class java.lang.Object

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

Constructor Detail

SSACache

public SSACache(IRFactory<IMethod> factory)

Parameters:

factory - a factory for creating IRs

Method Detail

findOrCreateIR

public IR findOrCreateIR(IMethod m,
                Context c,
                SSAOptions options)

Parameters:

m - a "normal" (bytecode-based) method

options - options governing ssa construction

Returns:

an IR for m, built according to the specified options. null if m is abstract or native.

Throws:

IllegalArgumentException - if m is null

findOrCreateDU

public DefUse findOrCreateDU(IMethod m,
                    Context c,
                    SSAOptions options)

Parameters:

m - a method

options - options governing ssa construction

Returns:

DefUse information for m, built according to the specified options. null if unavailable

Throws:

IllegalArgumentException - if m is null

findOrCreateDU

public DefUse findOrCreateDU(IR ir,
                    Context C)

Returns:

DefUse information for m, built according to the specified options. null if unavailable

Throws:

IllegalArgumentException - if ir is null

wipe

public void wipe()

The existence of this is unfortunate.

invalidateIR

public void invalidateIR(IMethod method,
                Context c)

Invalidate the cached IR for a pair

invalidateDU

public void invalidateDU(IMethod method,
                Context c)

Invalidate the cached DefUse for a pair

invalidate

public void invalidate(IMethod method,
              Context c)

Invalidate all cached information for a pair