jdk.internal.jvmci.code

Class VirtualObject

java.lang.Object

jdk.internal.jvmci.meta.AbstractValue

jdk.internal.jvmci.code.VirtualObject

All Implemented Interfaces:

JavaValue, KindProvider, TrustedInterface, Value

public final class VirtualObject
extends AbstractValue
implements JavaValue

An instance of this class represents an object whose allocation was removed by escape analysis. The information stored in the VirtualObject is used during deoptimization to recreate the object.

Nested Class Summary

Nested classes/interfaces inherited from interface jdk.internal.jvmci.meta.Value

Value.IllegalValue

Field Summary

Fields

Modifier and Type	Field and Description
private int	id
private ResolvedJavaType	type
private Value[]	values

Fields inherited from class jdk.internal.jvmci.meta.AbstractValue

ILLEGAL

Fields inherited from interface jdk.internal.jvmci.meta.Value

NO_VALUES

Constructor Summary

Constructors

Modifier	Constructor and Description
private	VirtualObject(ResolvedJavaType type, Value[] values, int id)

Method Summary

Modifier and Type	Method and Description
private static StringBuilder	appendValue(StringBuilder buf, Value value, Set<VirtualObject> visited)
private static boolean	checkValues(ResolvedJavaType type, Value[] values)
boolean	equals(Object o)
static VirtualObject	get(ResolvedJavaType type, Value[] values, int id) Creates a new VirtualObject for the given type, with the given fields.
int	getId() Returns the unique id that identifies the object within the debug information for one position in the compiled code.
ResolvedJavaType	getType() Returns the type of the object whose allocation was removed during compilation.
Value[]	getValues() Returns an array containing all the values to be stored into the object when it is recreated.
int	hashCode()
private static boolean	same(Object o1, Object o2)
void	setValues(Value[] values) Overwrites the current set of values with a new one.
String	toString()

Methods inherited from class jdk.internal.jvmci.meta.AbstractValue

getKind, getKindSuffix, getLIRKind, getPlatformKind, identityEquals

Methods inherited from class java.lang.Object

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

Methods inherited from interface jdk.internal.jvmci.meta.JavaValue

getKind

Methods inherited from interface jdk.internal.jvmci.meta.Value

identityEquals

Field Detail

type

private final ResolvedJavaType type

values

private Value[] values

id

private final int id

Constructor Detail

VirtualObject

private VirtualObject(ResolvedJavaType type,
                      Value[] values,
                      int id)

Method Detail

get

public static VirtualObject get(ResolvedJavaType type,
                                Value[] values,
                                int id)

Creates a new VirtualObject for the given type, with the given fields. If type is an instance class then values provides the values for the fields returned by getInstanceFields(true). If type is an array then the length of the values array determines the reallocated array length.

Parameters:

type - the type of the object whose allocation was removed during compilation. This can be either an instance of an array type.

values - an array containing all the values to be stored into the object when it is recreated

id - a unique id that identifies the object within the debug information for one position in the compiled code.

Returns:

a new VirtualObject instance.

appendValue

private static StringBuilder appendValue(StringBuilder buf,
                                         Value value,
                                         Set<VirtualObject> visited)

toString

public String toString()

Overrides:

toString in class Object

getType

public ResolvedJavaType getType()

Returns the type of the object whose allocation was removed during compilation. This can be either an instance of an array type.

getValues

public Value[] getValues()

Returns an array containing all the values to be stored into the object when it is recreated.

getId

public int getId()

Returns the unique id that identifies the object within the debug information for one position in the compiled code.

checkValues

private static boolean checkValues(ResolvedJavaType type,
                                   Value[] values)

setValues

public void setValues(Value[] values)

Overwrites the current set of values with a new one.

Parameters:

values - an array containing all the values to be stored into the object when it is recreated.

hashCode

public int hashCode()

Overrides:

hashCode in class AbstractValue

equals

public boolean equals(Object o)

Overrides:

equals in class AbstractValue

same

private static boolean same(Object o1,
                            Object o2)