Package org.eclipse.mat.parser.model

Class XClassHistogramRecord

java.lang.Object

org.eclipse.mat.snapshot.HistogramRecord

org.eclipse.mat.snapshot.ClassHistogramRecord

org.eclipse.mat.parser.model.XClassHistogramRecord

All Implemented Interfaces:

Serializable

public final class XClassHistogramRecord
extends ClassHistogramRecord

Holds details about a class, the number of instances and the shallow and retained sizes. This hold a direct link to the class instance.

See Also:

• Serialized Form

Field Summary

Fields inherited from class org.eclipse.mat.snapshot.HistogramRecord

COMPARATOR_FOR_LABEL, COMPARATOR_FOR_NUMBEROFOBJECTS, COMPARATOR_FOR_RETAINEDHEAPSIZE, COMPARATOR_FOR_USEDHEAPSIZE

Constructor Summary

Constructors

Constructor	Description
XClassHistogramRecord(ClassImpl classInstance)	Create an XClassHistogramRecord by retrieving information from the class

Method Summary

Modifier and Type	Method	Description
long	calculateRetainedSize(ISnapshot snapshot, boolean calculateIfNotAvailable, boolean approximation, IProgressListener listener)	Find out the retained size
int	getClassId()	Get id of the class this class histogram record stands for.
int[]	getObjectIds()	Get ids of the objects this class histogram record stands for.

Methods inherited from class org.eclipse.mat.snapshot.ClassHistogramRecord

toString

Methods inherited from class org.eclipse.mat.snapshot.HistogramRecord

getLabel, getNumberOfObjects, getRetainedHeapSize, getUsedHeapSize, incNumberOfObjects, incNumberOfObjects, incRetainedHeapSize, incUsedHeapSize, reverseComparator, setLabel, setNumberOfObjects, setRetainedHeapSize, setUsedHeapSize

Methods inherited from class java.lang.Object

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

Constructor Details

XClassHistogramRecord

public XClassHistogramRecord(ClassImpl classInstance)
                      throws SnapshotException

Create an XClassHistogramRecord by retrieving information from the class

Parameters:

classInstance - the class

Throws:

SnapshotException

Method Details

getClassId

public int getClassId()

Description copied from class: ClassHistogramRecord

Get id of the class this class histogram record stands for.

Overrides:

getClassId in class ClassHistogramRecord

Returns:

id of the class this class histogram record stands for

getObjectIds

public int[] getObjectIds()

Description copied from class: ClassHistogramRecord

Get ids of the objects this class histogram record stands for.

Overrides:

getObjectIds in class ClassHistogramRecord

Returns:

ids of the objects this class histogram record stands for

calculateRetainedSize

public long calculateRetainedSize(ISnapshot snapshot,
 boolean calculateIfNotAvailable,
 boolean approximation,
 IProgressListener listener)
                           throws SnapshotException

Description copied from class: ClassHistogramRecord

Find out the retained size

Overrides:

calculateRetainedSize in class ClassHistogramRecord

Parameters:

snapshot - the snapshot

calculateIfNotAvailable - whether to calculate the size if not already available

approximation - whether to use an approximation to the retained size (sum of the individual retained sizes)

listener - to report progress and errors

Returns:

the retained size, negated if approximate, 0 if not available

Throws:

SnapshotException