Module openj9.dtfjview

Package com.ibm.jvm.dtfjview.heapdump.portable

Class ObjectRecord

java.lang.Object

com.ibm.jvm.dtfjview.heapdump.portable.PortableHeapDumpRecord

com.ibm.jvm.dtfjview.heapdump.portable.ObjectRecord

Direct Known Subclasses:

LongObjectRecord, MediumObjectRecord, ShortObjectRecord

public abstract class ObjectRecord
extends PortableHeapDumpRecord

Object record. Base class for anything that looks like an object (has a classAddress, a size and a hashcode in addition to the address, previousAddress and references required to be a PortableHeapDumpRecord).

Field Summary

Fields

Modifier and Type	Field	Description
protected final long	_classAddress
protected final int	_hashCode
protected final boolean	_is32BitHash

Fields declared in class com.ibm.jvm.dtfjview.heapdump.portable.PortableHeapDumpRecord

_baseAddress, _gapPreceding, _gapSize, _numberOfReferences, _referenceFieldSize, _references, ADDRESS_SHIFT_SIZE, EIGHT_BYTE_REF, FOUR_BYTE_REF, ONE_BYTE_REF, TWO_BYTE_REF

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	ObjectRecord(long address, long previousAddress, long classAddress, int hashCode, ReferenceIterator references, boolean is32BitHash)

Method Summary

Modifier and Type	Method	Description
static ObjectRecord	getObjectRecord(long address, long previousAddress, long classAddress, int hashCode, ReferenceIterator references, PortableHeapDumpClassCache cache, boolean is64Bit, boolean is32BitHash)	Static factory method to pick the appropriate factory method
protected static boolean	isShortObjectEligible(long current, long previous)

Methods declared in class com.ibm.jvm.dtfjview.heapdump.portable.PortableHeapDumpRecord

getAddressDifference, getDifferenceReferences, sizeofReference, writeHeapDump, writeReference, writeReferences

Methods declared in class java.lang.Object

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

Field Details

_hashCode

protected final int _hashCode

_classAddress

protected final long _classAddress

_is32BitHash

protected final boolean _is32BitHash

Constructor Details

ObjectRecord

protected ObjectRecord(long address,
 long previousAddress,
 long classAddress,
 int hashCode,
 ReferenceIterator references,
 boolean is32BitHash)

Method Details

isShortObjectEligible

protected static boolean isShortObjectEligible(long current,
 long previous)

getObjectRecord

public static ObjectRecord getObjectRecord(long address,
 long previousAddress,
 long classAddress,
 int hashCode,
 ReferenceIterator references,
 PortableHeapDumpClassCache cache,
 boolean is64Bit,
 boolean is32BitHash)

Static factory method to pick the appropriate factory method

Returns:

ObjectRecord for this object