org.eclipse.mat.parser.model
Class XClassHistogramRecord

java.lang.Object
  extended by org.eclipse.mat.snapshot.HistogramRecord
      extended by org.eclipse.mat.snapshot.ClassHistogramRecord
          extended by org.eclipse.mat.parser.model.XClassHistogramRecord
All Implemented Interfaces:
java.io.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
XClassHistogramRecord(ClassImpl classInstance)
          Create an XClassHistogramRecord by retrieving information from the class
 
Method Summary
 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 Detail

XClassHistogramRecord

public XClassHistogramRecord(ClassImpl classInstance)
                      throws SnapshotException
Create an XClassHistogramRecord by retrieving information from the class

Parameters:
classInstance - the class
Throws:
SnapshotException
Method Detail

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