Module openj9.dtfj

Package com.ibm.j9ddr.vm29.tools.ddrinteractive

Class ClassWalker

java.lang.Object

com.ibm.j9ddr.vm29.tools.ddrinteractive.ClassWalker

Direct Known Subclasses:

RamClassWalker, RomClassWalker

public abstract class ClassWalker
extends Object

Field Summary

Fields

Modifier and Type	Field	Description
protected IClassWalkCallbacks	classWalkerCallback
protected StructurePointer	clazz
protected HashMap<String,String>	debugExtMap

Constructor Summary

Constructors

Constructor	Description
ClassWalker()

Method Summary

Modifier and Type	Method	Description
protected void	addObjectsasSlot(StructurePointer methodClass)
protected void	addObjectsAsSlot(StructurePointer methodClass, HashMap<String,String> renameFields)	It walks through each field in this structure that is represented by methodClass and registers each field as a slot into ClassWalkerCallBack It uses the StructureDescriptor of J9DDR to get the FieldDescriptor of a structure.
abstract void	allSlotsInObjectDo(IClassWalkCallbacks classWalker)	Walks every slots in an object and send the values to the classWalker
protected void	fillDebugExtMap()
IClassWalkCallbacks	getClassWalkerCallbacks()
StructurePointer	getClazz()
abstract Context	getContext()
protected String	getDebugExtForMethodName(String methodName)

Methods declared in class java.lang.Object

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

Field Detail

debugExtMap

protected HashMap<String,String> debugExtMap

clazz

protected StructurePointer clazz

classWalkerCallback

protected IClassWalkCallbacks classWalkerCallback

Constructor Detail

ClassWalker

public ClassWalker()

Method Detail

allSlotsInObjectDo

public abstract void allSlotsInObjectDo(IClassWalkCallbacks classWalker)
                                 throws CorruptDataException

Walks every slots in an object and send the values to the classWalker

Parameters:

classWalker - a class that will receive the slot and sections of the object

Throws:

CorruptDataException

getContext

public abstract Context getContext()

fillDebugExtMap

protected void fillDebugExtMap()

getClazz

public StructurePointer getClazz()

getClassWalkerCallbacks

public IClassWalkCallbacks getClassWalkerCallbacks()

getDebugExtForMethodName

protected String getDebugExtForMethodName(String methodName)

addObjectsAsSlot

protected void addObjectsAsSlot(StructurePointer methodClass,
                                HashMap<String,String> renameFields)
                         throws CorruptDataException

It walks through each field in this structure that is represented by methodClass and registers each field as a slot into ClassWalkerCallBack It uses the StructureDescriptor of J9DDR to get the FieldDescriptor of a structure. The name, type and address are found in the FieldDescriptor. The name, type and address are guaranteed to match the current core file, since they are taken from it.

Parameters:

methodClass - pointer class that is generated for the VM structure

renameFields - list of names to rename the original field names in the structure

Throws:

CorruptDataException

addObjectsasSlot

protected void addObjectsasSlot(StructurePointer methodClass)
                         throws CorruptDataException

Throws:

CorruptDataException