Module openj9.dtfj

Package com.ibm.j9ddr.vm29.j9.gc

Class GCScavengerForwardedHeader

java.lang.Object

com.ibm.j9ddr.vm29.j9.gc.GCScavengerForwardedHeader

public abstract class GCScavengerForwardedHeader
extends Object

Field Summary

Fields

Modifier and Type	Field	Description
protected com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer	objectPointer

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	GCScavengerForwardedHeader(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer object)

Method Summary

Modifier and Type	Method	Description
static GCScavengerForwardedHeader	fromJ9Object(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer object)	Factory method to construct an appropriate scavenger forwarded header
abstract com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer	getForwardedObject()	If the object has been forwarded, return the forwarded version of the object, otherwise return NULL.
com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer	getObject()
abstract UDATA	getObjectSize()
abstract com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer	getReverseForwardedPointer()	Get the reverse forwarded pointer for this object.
abstract boolean	isForwardedPointer()	Determine if the current object is forwarded.
abstract boolean	isReverseForwardedPointer()	Determine if the current object is a reverse forwarded object.

Methods declared in class java.lang.Object

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

Field Detail

objectPointer

protected com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer objectPointer

Constructor Detail

GCScavengerForwardedHeader

protected GCScavengerForwardedHeader(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer object)

Method Detail

fromJ9Object

public static GCScavengerForwardedHeader fromJ9Object(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer object)
                                               throws CorruptDataException

Factory method to construct an appropriate scavenger forwarded header

Parameters:

object - the "J9Object" structure to view as a ScavengerForwardedHeader

Returns:

an instance of GCScavengerForwardedHeader

Throws:

CorruptDataException

isForwardedPointer

public abstract boolean isForwardedPointer()
                                    throws CorruptDataException

Determine if the current object is forwarded.

Returns:

true if the current object is forwarded, false otherwise

Throws:

CorruptDataException

isReverseForwardedPointer

public abstract boolean isReverseForwardedPointer()
                                           throws CorruptDataException

Determine if the current object is a reverse forwarded object.

Returns:

true if the current object is reverse forwarded, false otherwise

Throws:

CorruptDataException

getForwardedObject

public abstract com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer getForwardedObject()
                                                                                 throws CorruptDataException

If the object has been forwarded, return the forwarded version of the object, otherwise return NULL.

Returns:

the forwarded version of this object or NULL

Throws:

CorruptDataException

getReverseForwardedPointer

public abstract com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer getReverseForwardedPointer()
                                                                                         throws CorruptDataException

Get the reverse forwarded pointer for this object.

Returns:

the reverse forwarded value

Throws:

CorruptDataException

getObject

public com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer getObject()

Returns:

the object pointer represented by the receiver

getObjectSize

public abstract UDATA getObjectSize()
                             throws CorruptDataException

Throws:

CorruptDataException