Module openj9.dtfj

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

Class LinearDumper

java.lang.Object

com.ibm.j9ddr.vm29.tools.ddrinteractive.LinearDumper

All Implemented Interfaces:

IClassWalkCallbacks

public class LinearDumper
extends Object
implements IClassWalkCallbacks

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	LinearDumper.J9ClassRegion	Private class used to store the regions.
static class	LinearDumper.J9ClassRegionNode

Nested classes/interfaces declared in interface com.ibm.j9ddr.vm29.tools.ddrinteractive.IClassWalkCallbacks

IClassWalkCallbacks.SlotType

Constructor Summary

Constructors

Constructor	Description
LinearDumper()

Method Summary

Modifier and Type	Method	Description
void	addRegion(StructurePointer clazz, IClassWalkCallbacks.SlotType type, AbstractPointer slotPtr, String slotName, long length, boolean computePadding)
void	addSection(StructurePointer clazz, AbstractPointer address, long length, String name, boolean computePadding)	It is a high level section of an object walked.
void	addSlot(StructurePointer clazz, IClassWalkCallbacks.SlotType type, AbstractPointer slotPtr, String slotName)	The information of one slot is sent back.
void	addSlot(StructurePointer clazz, IClassWalkCallbacks.SlotType type, AbstractPointer slotPtr, String slotName, String additionalInfo)	The information of one slot is sent back.
void	gatherLayoutInfo(PrintStream out, ClassWalker classWalker, long nestingThreshold)	Prints a class in a linear way to the PrintStream
LinearDumper.J9ClassRegionNode	getAllRegions(ClassWalker classWalker)	Returns a tree of regions and slots.
static void	printAllRegions(PrintStream out, StructurePointer clazz, long nestingThreshold, LinearDumper.J9ClassRegionNode regionNode, int nesting)

Methods declared in class java.lang.Object

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

Constructor Details

LinearDumper

public LinearDumper()

Method Details

addSlot

public void addSlot(StructurePointer clazz,
 IClassWalkCallbacks.SlotType type,
 AbstractPointer slotPtr,
 String slotName)
             throws CorruptDataException

Description copied from interface: IClassWalkCallbacks

The information of one slot is sent back.

Specified by:

addSlot in interface IClassWalkCallbacks

Parameters:

clazz - the object walked

type - the type of the slot, it is a com.ibm.j9ddr.vm29.tools.ddrinteractive.Type

slotPtr - an AbstractPointer of the slot currently walked

slotName -

Throws:

CorruptDataException

addSlot

public void addSlot(StructurePointer clazz,
 IClassWalkCallbacks.SlotType type,
 AbstractPointer slotPtr,
 String slotName,
 String additionalInfo)
             throws CorruptDataException

Description copied from interface: IClassWalkCallbacks

The information of one slot is sent back.

Specified by:

addSlot in interface IClassWalkCallbacks

Parameters:

clazz - the object walked

type - the type of the slot, it is a com.ibm.j9ddr.vm29.tools.ddrinteractive.Type

slotPtr - an AbstractPointer of the slot currently walked

slotName -

additionalInfo -

Throws:

CorruptDataException

addRegion

public void addRegion(StructurePointer clazz,
 IClassWalkCallbacks.SlotType type,
 AbstractPointer slotPtr,
 String slotName,
 long length,
 boolean computePadding)
               throws CorruptDataException

Throws:

CorruptDataException

addSection

public void addSection(StructurePointer clazz,
 AbstractPointer address,
 long length,
 String name,
 boolean computePadding)
                throws CorruptDataException

Description copied from interface: IClassWalkCallbacks

It is a high level section of an object walked. If two sections have the same address, they will be nested

Specified by:

addSection in interface IClassWalkCallbacks

Parameters:

clazz - the object walked

address - starting address of the section

length - length of the section

name -

computePadding - If true, compute the padding before and after this section

Throws:

CorruptDataException

getAllRegions

public LinearDumper.J9ClassRegionNode getAllRegions(ClassWalker classWalker)
                                             throws CorruptDataException

Returns a tree of regions and slots. Each slot is under a region. The root element is always null.

Parameters:

classWalker -

Returns:

J9ClassRegionNode tree of J9ClassRegion

Throws:

CorruptDataException

gatherLayoutInfo

public void gatherLayoutInfo(PrintStream out,
 ClassWalker classWalker,
 long nestingThreshold)
                      throws CorruptDataException

Prints a class in a linear way to the PrintStream

Parameters:

out -

classWalker - an instance of a IClassWalker

nestingThreshold - the level of detail. Level 1 prints the sections and the sizes. Level 2 prints more details.

Throws:

CorruptDataException

printAllRegions

public static void printAllRegions(PrintStream out,
 StructurePointer clazz,
 long nestingThreshold,
 LinearDumper.J9ClassRegionNode regionNode,
 int nesting)
                            throws CorruptDataException

Throws:

CorruptDataException