Package org.openjdk.jmc.common.util

Class MCOldObject

java.lang.Object

org.openjdk.jmc.common.util.MCOldObject

All Implemented Interfaces:

IMCOldObject

public class MCOldObject
extends Object
implements IMCOldObject

Base implementation of the IMCOldObject interface.

Constructor Summary

Constructors

Constructor	Description
MCOldObject(IQuantity address, IMCType type, String objectDescription, IMCOldObject referrer, String field, IQuantity fieldModifier, IQuantity arraySize, IQuantity arrayIndex)	Create a new old object instance.

Method Summary

Modifier and Type	Method	Description
boolean	equals(Object obj)
IQuantity	getAddress()	The address of the object, used for identity purposes.
String	getDescription()	Returns a description of the object.
IMCOldObject	getReferrer()	Returns the object that refers to this object in the heap reference chain.
IMCOldObjectArray	getReferrerArray()	If the object is referred to by an object in an array it returns the information about that array, otherwise it returns null.
IMCOldObjectField	getReferrerField()	If the object is referred to by an object in a field it returns a representation of the field, null otherwise.
int	getReferrerSkip()	Returns the number of steps away in the reference chain this object is from the next object referring to it.
IMCType	getType()	The type of the object, as an IMCType
int	hashCode()
String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Details

MCOldObject

public MCOldObject(IQuantity address,
 IMCType type,
 String objectDescription,
 IMCOldObject referrer,
 String field,
 IQuantity fieldModifier,
 IQuantity arraySize,
 IQuantity arrayIndex)

Create a new old object instance.

Parameters:

address - object address, see IMCOldObject.getAddress()

type - object type

objectDescription - object description

referrer - Referrer object, see IMCOldObject.getReferrer(). null if there is no referring object.

field - Name of the referring field, see IMCOldObjectField.getName(). null if there is no referring field.

fieldModifier - Modifier of the referring field, see IMCOldObjectField.getModifier(). null if there is no referring field.

arraySize - The array size if field refers to an array, see IMCOldObjectArray.getSize(). null if the field is not an array.

arrayIndex - The array index that refers to this object if field refers to an array, see IMCOldObjectArray.getIndex(). null if the field is not an array.

Method Details

getAddress

public IQuantity getAddress()

Description copied from interface: IMCOldObject

The address of the object, used for identity purposes.

Specified by:

getAddress in interface IMCOldObject

Returns:

the address of the object

getReferrerArray

public IMCOldObjectArray getReferrerArray()

Description copied from interface: IMCOldObject

If the object is referred to by an object in an array it returns the information about that array, otherwise it returns null.

Specified by:

getReferrerArray in interface IMCOldObject

Returns:

a representation of the array data for the object referring to this old object

getReferrerField

public IMCOldObjectField getReferrerField()

Description copied from interface: IMCOldObject

If the object is referred to by an object in a field it returns a representation of the field, null otherwise.

Specified by:

getReferrerField in interface IMCOldObject

Returns:

a representation of the field that refers to this object

getDescription

public String getDescription()

Description copied from interface: IMCOldObject

Returns a description of the object.

Specified by:

getDescription in interface IMCOldObject

Returns:

the object description

getReferrer

public IMCOldObject getReferrer()

Description copied from interface: IMCOldObject

Returns the object that refers to this object in the heap reference chain.

Specified by:

getReferrer in interface IMCOldObject

Returns:

the object that refers to this object

getType

public IMCType getType()

Description copied from interface: IMCOldObject

The type of the object, as an IMCType

Specified by:

getType in interface IMCOldObject

Returns:

the type of the object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object

getReferrerSkip

public int getReferrerSkip()

Description copied from interface: IMCOldObject

Returns the number of steps away in the reference chain this object is from the next object referring to it. If this is greater than 0, it means that there are objects between this one and the referrer that were omitted when committing the traces to the Flight Recording file.

Specified by:

getReferrerSkip in interface IMCOldObject

Returns:

the number of steps between this object and the next one towards the root in the reference chain