org.openjdk.jol.info
Class GraphLayout

java.lang.Object
  org.openjdk.jol.info.GraphLayout

public class GraphLayout
extends Object

Holds the object graph layout info.

Constructor Summary

GraphLayout(Object root)

Method Summary

SortedSet<Long>	addresses() Answer the set of addresses for the discovered objects
long	endAddress() Answer the ending address of observed memory chunk
Multiset<Class<?>>	getClassCounts() Answer the class counts
Set<Class<?>>	getClasses() Answer the set of observed classes
Multiset<Class<?>>	getClassSizes() Answer the class sizes.
static GraphLayout	parseInstance(Object root) Parse the object graph starting from the given instance.
GraphPathRecord	record(long address) Get the object descriptor for the given address
long	startAddress() Answer the starting address of observed memory chunk
String	toFootprint() Get the stringly representation of footprint table
void	toImage(String fileName) Put the graphical representation of object graph into the file.
String	toPrintable() Get the stringly representation of object graph
long	totalCount() Answer the total instance count
long	totalSize() Answer the total instance footprint

Methods inherited from class java.lang.Object

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

Constructor Detail

GraphLayout

public GraphLayout(Object root)

Method Detail

parseInstance

public static GraphLayout parseInstance(Object root)

Parse the object graph starting from the given instance.

Parameters:

root - root instance to start from

Returns:

object graph

getClassSizes

public Multiset<Class<?>> getClassSizes()

Answer the class sizes.

Returns:

class sizes multiset

getClassCounts

public Multiset<Class<?>> getClassCounts()

Answer the class counts

Returns:

class counts multiset

getClasses

public Set<Class<?>> getClasses()

Answer the set of observed classes

Returns:

observed classes set

totalCount

public long totalCount()

Answer the total instance count

Returns:

total instance count

totalSize

public long totalSize()

Answer the total instance footprint

Returns:

total instance footprint, bytes

startAddress

public long startAddress()

Answer the starting address of observed memory chunk

Returns:

starting address

endAddress

public long endAddress()

Answer the ending address of observed memory chunk

Returns:

ending address

addresses

public SortedSet<Long> addresses()

Answer the set of addresses for the discovered objects

Returns:

sorted set of addresses

See Also:

record(long)

record

public GraphPathRecord record(long address)

Get the object descriptor for the given address

Parameters:

address - address

Returns:

object descriptor

toFootprint

public String toFootprint()

Get the stringly representation of footprint table

Returns:

footprint table

toPrintable

public String toPrintable()

Get the stringly representation of object graph

Returns:

linearized text form of object graph

toImage

public void toImage(String fileName)
             throws IOException

Put the graphical representation of object graph into the file.

Parameters:

fileName - filename

Throws:

IOException