com.oracle.svm.core.heap

Class ReferenceInternals

java.lang.Object

com.oracle.svm.core.heap.ReferenceInternals

public final class ReferenceInternals
extends Object

Methods implementing the internals of Reference or providing access to them. These are not injected into Target_java_lang_ref_Reference so that subclasses of Reference cannot interfere with them.

Field Summary

Fields

Modifier and Type	Field and Description
static String	REFERENT_FIELD_NAME

Method Summary

Modifier and Type	Method and Description
static void	clear(Reference<?> instance)
static <T> org.graalvm.word.Pointer	getDiscoveredPointer(Reference<T> instance) Barrier-less read of Target_java_lang_ref_Reference.discovered as a pointer.
static <T> Reference<?>	getNextDiscovered(Reference<T> instance) Read Target_java_lang_ref_Reference.discovered.
static long	getNextDiscoveredFieldOffset()
static jdk.vm.ci.meta.ResolvedJavaType	getReferenceType(jdk.vm.ci.meta.MetaAccessProvider metaAccess)
static <T> T	getReferent(Reference<T> instance)
static jdk.vm.ci.meta.ResolvedJavaField	getReferentField(jdk.vm.ci.meta.MetaAccessProvider metaAccess)
static <T> org.graalvm.word.Pointer	getReferentFieldAddress(Reference<T> instance)
static long	getReferentFieldOffset()
static <T> org.graalvm.word.Pointer	getReferentPointer(Reference<T> instance) Barrier-less read of Target_java_lang_ref_Reference.referent as a pointer.
static long	getSoftReferenceClock()
static long	getSoftReferenceTimestamp(SoftReference<?> instance)
static boolean	hasQueue(Reference<?> instance)
static void	processPendingReferences()
static boolean	refersTo(Reference<?> instance, Object value)
static <T> void	setNextDiscovered(Reference<T> instance, Reference<?> newNext) Write Target_java_lang_ref_Reference.discovered.
static void	setReferent(Reference<?> instance, Object value) Write Target_java_lang_ref_Reference.referent.
static void	updateSoftReferenceClock()
static void	waitForPendingReferences()
static boolean	waitForReferenceProcessing()

Methods inherited from class java.lang.Object

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

Field Detail

REFERENT_FIELD_NAME

public static final String REFERENT_FIELD_NAME

See Also:

Constant Field Values

Method Detail

getReferentPointer

public static <T> org.graalvm.word.Pointer getReferentPointer(Reference<T> instance)

Barrier-less read of Target_java_lang_ref_Reference.referent as a pointer.

getReferent

public static <T> T getReferent(Reference<T> instance)

setReferent

public static void setReferent(Reference<?> instance,
                               Object value)

Write Target_java_lang_ref_Reference.referent.

refersTo

public static boolean refersTo(Reference<?> instance,
                               Object value)

clear

public static void clear(Reference<?> instance)

getReferentFieldAddress

public static <T> org.graalvm.word.Pointer getReferentFieldAddress(Reference<T> instance)

getReferentFieldOffset

public static long getReferentFieldOffset()

getNextDiscovered

public static <T> Reference<?> getNextDiscovered(Reference<T> instance)

Read Target_java_lang_ref_Reference.discovered.

getDiscoveredPointer

public static <T> org.graalvm.word.Pointer getDiscoveredPointer(Reference<T> instance)

Barrier-less read of Target_java_lang_ref_Reference.discovered as a pointer.

getNextDiscoveredFieldOffset

public static long getNextDiscoveredFieldOffset()

setNextDiscovered

public static <T> void setNextDiscovered(Reference<T> instance,
                                         Reference<?> newNext)

Write Target_java_lang_ref_Reference.discovered.

hasQueue

public static boolean hasQueue(Reference<?> instance)

waitForPendingReferences

public static void waitForPendingReferences()
                                     throws InterruptedException

Throws:

InterruptedException

processPendingReferences

public static void processPendingReferences()

waitForReferenceProcessing

public static boolean waitForReferenceProcessing()
                                          throws InterruptedException

Throws:

InterruptedException

getSoftReferenceClock

public static long getSoftReferenceClock()

updateSoftReferenceClock

public static void updateSoftReferenceClock()

getSoftReferenceTimestamp

public static long getSoftReferenceTimestamp(SoftReference<?> instance)

getReferenceType

public static jdk.vm.ci.meta.ResolvedJavaType getReferenceType(jdk.vm.ci.meta.MetaAccessProvider metaAccess)

getReferentField

public static jdk.vm.ci.meta.ResolvedJavaField getReferentField(jdk.vm.ci.meta.MetaAccessProvider metaAccess)