com.oracle.graal.pointsto.heap

Class ImageHeapConstant

java.lang.Object

com.oracle.graal.pointsto.heap.ImageHeapConstant

All Implemented Interfaces:

jdk.vm.ci.meta.JavaConstant, org.graalvm.compiler.core.common.type.CompressibleConstant, org.graalvm.compiler.core.common.type.TypedConstant

Direct Known Subclasses:

ImageHeapArray, ImageHeapInstance

public abstract class ImageHeapConstant
extends Object
implements org.graalvm.compiler.core.common.type.TypedConstant, org.graalvm.compiler.core.common.type.CompressibleConstant

It represents an object snapshot. It stores the replaced object, i.e., the result of applying object replacers on the original hosted object, and the instance field values or array elements of this object. The field values are stored as JavaConstant to also encode primitive values. ImageHeapObject are created only after an object is processed through the object replacers.

Field Summary

Fields

Modifier and Type	Field and Description
protected boolean	compressed
protected JavaConstant	hostedObject Stores the hosted object, already processed by the object transformers.
protected int	identityHashCode
protected ResolvedJavaType	type Stores the type of this object.

Method Summary

Modifier and Type	Method and Description
boolean	asBoolean()
Object	asBoxedPrimitive()
double	asDouble()
float	asFloat()
int	asInt()
long	asLong()
boolean	equals(Object o)
abstract ImageHeapConstant	forObjectClone() Returns a new image heap instance, as if Object.clone() was called on the original object.
JavaConstant	getHostedObject()
int	getIdentityHashCode()
JavaKind	getJavaKind()
ResolvedJavaType	getType(MetaAccessProvider provider)
int	hashCode()
boolean	isBackedByHostedObject()
boolean	isCompressed()
boolean	isDefaultForKind()
boolean	isNull()
boolean	isReachable()
boolean	markReachable(ObjectScanner.ScanReason reason)
void	setType(ResolvedJavaType type)
String	toValueString()

Methods inherited from class java.lang.Object

clone, getClass, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.graalvm.compiler.core.common.type.CompressibleConstant

compress, uncompress

Field Detail

type

protected ResolvedJavaType type

Stores the type of this object.

hostedObject

protected final JavaConstant hostedObject

Stores the hosted object, already processed by the object transformers. It is null for instances of partially evaluated classes.

identityHashCode

protected final int identityHashCode

compressed

protected final boolean compressed

Method Detail

markReachable

public boolean markReachable(ObjectScanner.ScanReason reason)

isReachable

public boolean isReachable()

getIdentityHashCode

public int getIdentityHashCode()

Specified by:

getIdentityHashCode in interface org.graalvm.compiler.core.common.type.TypedConstant

getHostedObject

public JavaConstant getHostedObject()

isBackedByHostedObject

public boolean isBackedByHostedObject()

getJavaKind

public JavaKind getJavaKind()

isNull

public boolean isNull()

isDefaultForKind

public boolean isDefaultForKind()

getType

public ResolvedJavaType getType(MetaAccessProvider provider)

Specified by:

getType in interface org.graalvm.compiler.core.common.type.TypedConstant

setType

public void setType(ResolvedJavaType type)

asBoxedPrimitive

public Object asBoxedPrimitive()

asInt

public int asInt()

asBoolean

public boolean asBoolean()

asLong

public long asLong()

asFloat

public float asFloat()

asDouble

public double asDouble()

isCompressed

public boolean isCompressed()

Specified by:

isCompressed in interface org.graalvm.compiler.core.common.type.CompressibleConstant

toValueString

public String toValueString()

forObjectClone

public abstract ImageHeapConstant forObjectClone()

Returns a new image heap instance, as if Object.clone() was called on the original object. If the type is not cloneable, then null is returned.

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object