com.oracle.graal.hotspot.nodes

Class G1ReferentFieldReadBarrier

java.lang.Object

com.oracle.graal.graph.Node

com.oracle.graal.nodes.ValueNode

com.oracle.graal.nodes.FixedNode

com.oracle.graal.nodes.FixedWithNextNode

com.oracle.graal.hotspot.nodes.WriteBarrier

com.oracle.graal.hotspot.nodes.ObjectWriteBarrier

com.oracle.graal.hotspot.nodes.G1ReferentFieldReadBarrier

All Implemented Interfaces:

NodeInterface, Lowerable, Cloneable, Formattable, KindProvider

public final class G1ReferentFieldReadBarrier
extends ObjectWriteBarrier

The G1ReferentFieldReadBarrier is added when a read access is performed to the referent field of a Reference object (through a LoadFieldNode or an UnsafeLoadNode). The return value of the read is passed to the snippet implementing the read barrier and consequently is added to the SATB queue if the concurrent marker is enabled.

Nested Class Summary

Nested classes/interfaces inherited from class com.oracle.graal.graph.Node

Node.ConstantNodeParameter, Node.InjectedNodeParameter, Node.Input, Node.NodeIntrinsic, Node.OptionalInput, Node.Successor, Node.ValueNumberable

Field Summary

Fields

Modifier and Type	Field and Description
protected boolean	doLoad
static NodeClass<G1ReferentFieldReadBarrier>	TYPE

Fields inherited from class com.oracle.graal.hotspot.nodes.ObjectWriteBarrier

address, precise, value

Fields inherited from class com.oracle.graal.nodes.FixedWithNextNode

next

Fields inherited from class com.oracle.graal.nodes.ValueNode

stamp

Fields inherited from class com.oracle.graal.graph.Node

NODE_LIST, NOT_ITERABLE, USE_UNSAFE_TO_CLONE, WithAllEdges, WithNoEdges, WithOnlyInputEdges, WithOnlySucessorEdges

Constructor Summary

Constructors

Constructor and Description
G1ReferentFieldReadBarrier(AddressNode address, ValueNode expectedObject, boolean doLoad)

Method Summary

Modifier and Type	Method and Description
boolean	doLoad()
ValueNode	getExpectedObject()

Methods inherited from class com.oracle.graal.hotspot.nodes.ObjectWriteBarrier

getAddress, getValue, usePrecise

Methods inherited from class com.oracle.graal.hotspot.nodes.WriteBarrier

lower

Methods inherited from class com.oracle.graal.nodes.FixedWithNextNode

asNode, next, setNext

Methods inherited from class com.oracle.graal.nodes.FixedNode

verify

Methods inherited from class com.oracle.graal.nodes.ValueNode

asConstant, asJavaConstant, getKind, graph, inferStamp, isAllowedUsageType, isConstant, isConstantPredicate, isNullConstant, setStamp, stamp, updateStamp

Methods inherited from class com.oracle.graal.graph.Node

acceptInputs, acceptSuccessors, afterClone, assertFalse, assertTrue, cfgPredecessors, cfgSuccessors, clearInputs, clearSuccessors, copyWithInputs, copyWithInputs, equals, fail, formatTo, getDebugProperties, getDebugProperties, getId, getNodeClass, getUsageAt, getUsageCount, hashCode, hasNoUsages, hasUsages, inputs, isAlive, isDeleted, markDeleted, modCount, newIdentityMap, newIdentityMap, newIdentityMap, newMap, newMap, newMap, newSet, newSet, predecessor, pushInputs, removeUsage, replaceAndDelete, replaceAtMatchingUsages, replaceAtPredecessor, replaceAtUsages, replaceAtUsages, replaceAtUsages, replaceFirstInput, replaceFirstSuccessor, safeDelete, simplify, successors, toString, toString, updatePredecessor, updateUsages, updateUsagesInterface, usages, valueEquals, verifyEdges, verifyInputs

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.oracle.graal.nodes.spi.Lowerable

asNode

Field Detail

TYPE

public static final NodeClass<G1ReferentFieldReadBarrier> TYPE

doLoad

protected final boolean doLoad

Constructor Detail

G1ReferentFieldReadBarrier

public G1ReferentFieldReadBarrier(AddressNode address,
                                  ValueNode expectedObject,
                                  boolean doLoad)

Method Detail

getExpectedObject

public ValueNode getExpectedObject()

doLoad

public boolean doLoad()