com.oracle.graal.nodes.java

Class LoweredCompareAndSwapNode

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.nodes.DeoptimizingFixedWithNextNode

com.oracle.graal.nodes.memory.FixedAccessNode

com.oracle.graal.nodes.java.LoweredCompareAndSwapNode

All Implemented Interfaces:

NodeInterface, DeoptimizingNode, DeoptimizingNode.DeoptBefore, GuardedNode, Access, HeapAccess, MemoryCheckpoint, MemoryCheckpoint.Single, MemoryNode, LIRLowerable, NodeWithState, StateSplit, Cloneable, Formattable, KindProvider

public final class LoweredCompareAndSwapNode
extends FixedAccessNode
implements StateSplit, LIRLowerable, MemoryCheckpoint.Single

Represents the lowered version of an atomic compare-and-swap operationCompareAndSwapNode.

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

Nested classes/interfaces inherited from interface com.oracle.graal.nodes.memory.MemoryCheckpoint

MemoryCheckpoint.Multi, MemoryCheckpoint.Single, MemoryCheckpoint.TypeAssertion

Nested classes/interfaces inherited from interface com.oracle.graal.nodes.memory.HeapAccess

HeapAccess.BarrierType

Nested classes/interfaces inherited from interface com.oracle.graal.nodes.DeoptimizingNode

DeoptimizingNode.DeoptAfter, DeoptimizingNode.DeoptBefore, DeoptimizingNode.DeoptDuring

Field Summary

Fields

Modifier and Type	Field and Description
(package private) ValueNode	expectedValue
(package private) ValueNode	newValue
(package private) FrameState	stateAfter
static NodeClass<LoweredCompareAndSwapNode>	TYPE

Fields inherited from class com.oracle.graal.nodes.memory.FixedAccessNode

barrierType, guard, location, nullCheck

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

stateBefore

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
LoweredCompareAndSwapNode(AddressNode address, LocationIdentity location, ValueNode expectedValue, ValueNode newValue, HeapAccess.BarrierType barrierType)

Method Summary

Modifier and Type	Method and Description
boolean	canNullCheck()
void	generate(NodeLIRBuilderTool gen)
ValueNode	getExpectedValue()
ValueNode	getNewValue()
boolean	hasSideEffect() Determines if this node has a side-effect.
void	setStateAfter(FrameState x) Sets the FrameState corresponding to the state of the JVM after execution of this node.
FrameState	stateAfter() Gets the FrameState corresponding to the state of the JVM after execution of this node.

Methods inherited from class com.oracle.graal.nodes.memory.FixedAccessNode

canDeoptimize, getAddress, getBarrierType, getGuard, getLocationIdentity, getNullCheck, setAddress, setGuard, setNullCheck

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

setStateBefore, stateBefore

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.StateSplit

asNode

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

states

Methods inherited from interface com.oracle.graal.nodes.memory.MemoryCheckpoint.Single

getLocationIdentity

Methods inherited from interface com.oracle.graal.nodes.extended.GuardedNode

asNode

Field Detail

TYPE

public static final NodeClass<LoweredCompareAndSwapNode> TYPE

expectedValue

ValueNode expectedValue

newValue

ValueNode newValue

stateAfter

FrameState stateAfter

Constructor Detail

LoweredCompareAndSwapNode

public LoweredCompareAndSwapNode(AddressNode address,
                                 LocationIdentity location,
                                 ValueNode expectedValue,
                                 ValueNode newValue,
                                 HeapAccess.BarrierType barrierType)

Method Detail

stateAfter

public FrameState stateAfter()

Description copied from interface: StateSplit

Gets the FrameState corresponding to the state of the JVM after execution of this node.

Specified by:

stateAfter in interface StateSplit

setStateAfter

public void setStateAfter(FrameState x)

Description copied from interface: StateSplit

Sets the FrameState corresponding to the state of the JVM after execution of this node.

Specified by:

setStateAfter in interface StateSplit

hasSideEffect

public boolean hasSideEffect()

Description copied from interface: StateSplit

Determines if this node has a side-effect. Such nodes cannot be safely re-executed because they modify state which is visible to other threads or modify state beyond what is captured in FrameState nodes.

Specified by:

hasSideEffect in interface StateSplit

getExpectedValue

public ValueNode getExpectedValue()

getNewValue

public ValueNode getNewValue()

canNullCheck

public boolean canNullCheck()

Specified by:

canNullCheck in interface Access

generate

public void generate(NodeLIRBuilderTool gen)

Specified by:

generate in interface LIRLowerable