com.oracle.svm.core.heap

Class ReferenceAccessImpl

java.lang.Object

com.oracle.svm.core.heap.ReferenceAccessImpl

All Implemented Interfaces:

ReferenceAccess

public final class ReferenceAccessImpl
extends Object
implements ReferenceAccess

Method Summary

Modifier and Type	Method and Description
org.graalvm.word.UnsignedWord	getCompressedRepresentation(Object obj) Return the compressed representation of an object reference.
org.graalvm.compiler.core.common.CompressEncoding	getCompressEncoding() Returns the default compression encoding.
boolean	haveCompressedReferences() Returns true iff compressed references are available.
org.graalvm.compiler.word.Word	readObjectAsUntrackedPointer(org.graalvm.word.Pointer p, boolean compressed) Read the absolute address of the object referenced by the object reference at address p and return it as a word which is not tracked by garbage collection.
Object	readObjectAt(org.graalvm.word.Pointer p, boolean compressed) Read the object reference at address p and return it.
Object	uncompressReference(org.graalvm.word.UnsignedWord ref) Get an object reference from its compressed representation.
void	writeObjectAt(org.graalvm.word.Pointer p, Object value, boolean compressed) Write the location of object value to the object reference at address p.
void	writeObjectBarrieredAt(Object object, org.graalvm.word.UnsignedWord offsetInObject, Object value, boolean compressed)

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.oracle.svm.core.heap.ReferenceAccess

singleton

Method Detail

readObjectAsUntrackedPointer

public org.graalvm.compiler.word.Word readObjectAsUntrackedPointer(org.graalvm.word.Pointer p,
                                                                   boolean compressed)

Description copied from interface: ReferenceAccess

Read the absolute address of the object referenced by the object reference at address p and return it as a word which is not tracked by garbage collection.

Specified by:

readObjectAsUntrackedPointer in interface ReferenceAccess

readObjectAt

public Object readObjectAt(org.graalvm.word.Pointer p,
                           boolean compressed)

Description copied from interface: ReferenceAccess

Read the object reference at address p and return it.

Specified by:

readObjectAt in interface ReferenceAccess

writeObjectAt

public void writeObjectAt(org.graalvm.word.Pointer p,
                          Object value,
                          boolean compressed)

Description copied from interface: ReferenceAccess

Write the location of object value to the object reference at address p.

Specified by:

writeObjectAt in interface ReferenceAccess

writeObjectBarrieredAt

public void writeObjectBarrieredAt(Object object,
                                   org.graalvm.word.UnsignedWord offsetInObject,
                                   Object value,
                                   boolean compressed)

Specified by:

writeObjectBarrieredAt in interface ReferenceAccess

getCompressedRepresentation

public org.graalvm.word.UnsignedWord getCompressedRepresentation(Object obj)

Description copied from interface: ReferenceAccess

Return the compressed representation of an object reference.

Specified by:

getCompressedRepresentation in interface ReferenceAccess

uncompressReference

public Object uncompressReference(org.graalvm.word.UnsignedWord ref)

Description copied from interface: ReferenceAccess

Get an object reference from its compressed representation.

Specified by:

uncompressReference in interface ReferenceAccess

haveCompressedReferences

public boolean haveCompressedReferences()

Description copied from interface: ReferenceAccess

Returns true iff compressed references are available.

Specified by:

haveCompressedReferences in interface ReferenceAccess

getCompressEncoding

public org.graalvm.compiler.core.common.CompressEncoding getCompressEncoding()

Description copied from interface: ReferenceAccess

Returns the default compression encoding.

Specified by:

getCompressEncoding in interface ReferenceAccess