Package org.eclipse.mat.snapshot

Class MultiplePathsFromGCRootsClassRecord

java.lang.Object

org.eclipse.mat.snapshot.MultiplePathsFromGCRootsClassRecord

public class MultiplePathsFromGCRootsClassRecord
extends Object

Holds one level of multiple paths from Garbage Collection roots merged by class.

Constructor Summary

Constructors

Constructor	Description
MultiplePathsFromGCRootsClassRecord(IClass clazz, int level, boolean fromRoots, ISnapshot snapshot)	Constructor

Method Summary

Modifier and Type	Method	Description
void	addPath(int[] path)	This method is used only when the record is built.
IClass	getClazz()
static Comparator<MultiplePathsFromGCRootsClassRecord>	getComparatorByNumberOfReferencedObjects()
static Comparator<MultiplePathsFromGCRootsClassRecord>	getComparatorByReferencedHeapSize()	Returns a Comparator ordering the records descending by the total size of referenced objects.
int	getCount()	Get the number of paths going through this object
int	getDistinctCount()	Get the number of distinct objects of this class
int	getLevel()
List<int[]>	getPaths()	Get all the paths going through the object (getObjectId())
long	getReferencedHeapSize()	Get the total net heap size of all referenced objects (see getReferencedObjects())
int[]	getReferencedObjects()	Get the "end" objects for each path.
boolean	isFromRoots()
MultiplePathsFromGCRootsClassRecord[]	nextLevel()	Go down to the next level

Methods inherited from class java.lang.Object

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

Constructor Details

MultiplePathsFromGCRootsClassRecord

public MultiplePathsFromGCRootsClassRecord(IClass clazz,
 int level,
 boolean fromRoots,
 ISnapshot snapshot)

Constructor

Parameters:

clazz - the class in question

level -

fromRoots - true means from roots, false means to roots

snapshot -

Method Details

nextLevel

public MultiplePathsFromGCRootsClassRecord[] nextLevel()
                                                throws SnapshotException

Go down to the next level

Returns:

an array of records from the next level

Throws:

SnapshotException

addPath

public void addPath(int[] path)

This method is used only when the record is built. Adds one path to the set of paths

Parameters:

path -

getPaths

public List<int[]> getPaths()

Get all the paths going through the object (getObjectId())

Returns:

List<int[]> each element in the list is an int[] representing a path

getCount

public int getCount()

Get the number of paths going through this object

getDistinctCount

public int getDistinctCount()

Get the number of distinct objects of this class

getReferencedHeapSize

public long getReferencedHeapSize()
                           throws SnapshotException

Get the total net heap size of all referenced objects (see getReferencedObjects())

Returns:

- the total heap size of all referenced objects

Throws:

SnapshotException

getReferencedObjects

public int[] getReferencedObjects()

Get the "end" objects for each path. This is equal to getting all the paths and looking at their element [0]

Returns:

- an array with all the objects at the end of the paths

getComparatorByNumberOfReferencedObjects

public static Comparator<MultiplePathsFromGCRootsClassRecord> getComparatorByNumberOfReferencedObjects()

getComparatorByReferencedHeapSize

public static Comparator<MultiplePathsFromGCRootsClassRecord> getComparatorByReferencedHeapSize()

Returns a Comparator ordering the records descending by the total size of referenced objects.

getClazz

public IClass getClazz()

isFromRoots

public boolean isFromRoots()

getLevel

public int getLevel()