Package stdlib

Class ValueMap

java.lang.Object

stdlib.ValueMap

class ValueMap
extends Object

Keeps track of values in order to spot changes. This keeps copies of stack variables (frames) and arrays. Does not store objects, since direct changes to fields can be trapped by the JDI.

Author:

James Riely, jriely@cs.depaul.edu, August 2014

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
private static class	ValueMap.CallTree

Field Summary

Fields

Modifier and Type	Field	Description
private HashMap<ArrayReference,Object[]>	arrays
private ValueMap.CallTree	callTree
private HashMap<ThreadReference,Stack<HashMap<LocalVariable,Value>>>	stacks
private HashMap<ArrayReference,String>	staticArrayNames
private HashMap<ArrayReference,Object[]>	staticArrays

Constructor Summary

Constructors

Constructor	Description
ValueMap()

Method Summary

Modifier and Type	Method	Description
private boolean	arrayFieldHasChanged(Boolean show, ThreadReference thr, ObjectReference objRef, IndentPrinter printer)
private boolean	arrayStaticFieldHasChanged(Boolean show, ThreadReference thr, IndentPrinter printer)
private boolean	arrayValueHasChanged(ArrayReference oldArray, ArrayReference newArray)
private boolean	arrayValueHasChangedHelper(Object[] oldObjArray, ArrayReference newArray)
void	clearCallTree()
private static Object[]	copyArray(ArrayReference oldArrayReference)
boolean	maybeAdjustAfterException(ThreadReference thr)
int	numFrames(ThreadReference thr)
int	numThreads()
void	printCallTree()
void	registerArray(ArrayReference val)
boolean	registerStaticArray(ArrayReference val, String name)
void	stackCreate(ThreadReference thr)
void	stackDestroy(ThreadReference thr)
void	stackPopFrame(ThreadReference thr)
void	stackPushFrame(StackFrame currFrame, ThreadReference thr)
void	stackUpdateFrame(Method meth, ThreadReference thr, IndentPrinter printer)
private boolean	valueHasChanged(Value oldValue, Value newValue)

Methods inherited from class java.lang.Object

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

Field Details

stacks

private HashMap<ThreadReference,Stack<HashMap<LocalVariable,Value>>> stacks

arrays

private HashMap<ArrayReference,Object[]> arrays

staticArrays

private HashMap<ArrayReference,Object[]> staticArrays

staticArrayNames

private HashMap<ArrayReference,String> staticArrayNames

callTree

private ValueMap.CallTree callTree

Constructor Details

ValueMap

ValueMap()

Method Details

numThreads

public int numThreads()

clearCallTree

public void clearCallTree()

printCallTree

public void printCallTree()

maybeAdjustAfterException

public boolean maybeAdjustAfterException(ThreadReference thr)

numFrames

public int numFrames(ThreadReference thr)

stackCreate

public void stackCreate(ThreadReference thr)

stackDestroy

public void stackDestroy(ThreadReference thr)

stackPushFrame

public void stackPushFrame(StackFrame currFrame,
 ThreadReference thr)

stackPopFrame

public void stackPopFrame(ThreadReference thr)

stackUpdateFrame

public void stackUpdateFrame(Method meth,
 ThreadReference thr,
 IndentPrinter printer)

registerArray

public void registerArray(ArrayReference val)

registerStaticArray

public boolean registerStaticArray(ArrayReference val,
 String name)

copyArray

private static Object[] copyArray(ArrayReference oldArrayReference)

valueHasChanged

private boolean valueHasChanged(Value oldValue,
 Value newValue)

arrayStaticFieldHasChanged

private boolean arrayStaticFieldHasChanged(Boolean show,
 ThreadReference thr,
 IndentPrinter printer)

arrayFieldHasChanged

private boolean arrayFieldHasChanged(Boolean show,
 ThreadReference thr,
 ObjectReference objRef,
 IndentPrinter printer)

arrayValueHasChanged

private boolean arrayValueHasChanged(ArrayReference oldArray,
 ArrayReference newArray)

arrayValueHasChangedHelper

private boolean arrayValueHasChangedHelper(Object[] oldObjArray,
 ArrayReference newArray)