Package org.eclipse.mat.snapshot

Class ClassLoaderHistogramRecord

java.lang.Object

org.eclipse.mat.snapshot.HistogramRecord

org.eclipse.mat.snapshot.ClassLoaderHistogramRecord

All Implemented Interfaces:

Serializable

Direct Known Subclasses:

XClassLoaderHistogramRecord

public class ClassLoaderHistogramRecord
extends HistogramRecord

This class holds the histogram data on the objects found in the object set for which a histogram was computed (aggregated per class loader).

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
ClassLoaderHistogramRecord(String label, int classLoaderId, ArrayList<ClassHistogramRecord> classHistogramRecords, long numberOfObjects, long usedHeapSize, long retainedHeapSize)	Details of a class loader

Method Summary

Modifier and Type	Method	Description
long	calculateRetainedSize(ISnapshot snapshot, boolean calculateIfNotAvailable, boolean approximation, IProgressListener listener)	Find out the retained size
Collection<ClassHistogramRecord>	getClassHistogramRecords()	Get collection of the class histogram records this class loader histogram record stands for.
int	getClassLoaderId()	Get id of the class loader this class loader histogram record stands for.
int[]	getObjectIds()	Get ids of the objects this class loader histogram record stands for.
String	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

ClassLoaderHistogramRecord

public ClassLoaderHistogramRecord(String label,
 int classLoaderId,
 ArrayList<ClassHistogramRecord> classHistogramRecords,
 long numberOfObjects,
 long usedHeapSize,
 long retainedHeapSize)

Details of a class loader

Parameters:

label - the name of the loader

classLoaderId - the id of the class loader object

classHistogramRecords - the histogram details of all the classes loaded by this loader

numberOfObjects -

usedHeapSize -

retainedHeapSize -

Method Details

getClassLoaderId

public int getClassLoaderId()

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

Returns:

id of the class loader this class loader histogram record stands for

getClassHistogramRecords

public Collection<ClassHistogramRecord> getClassHistogramRecords()

Get collection of the class histogram records this class loader histogram record stands for.

Returns:

collection of the class histogram records this class loader histogram record stands for

getObjectIds

public int[] getObjectIds()
                   throws SnapshotException

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

Returns:

ids of the objects this class loader histogram record stands for

Throws:

SnapshotException

calculateRetainedSize

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

Find out the retained size

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, and 0 if unavailable

Throws:

SnapshotException

toString

public String toString()

Overrides:

toString in class Object