com.oracle.graal.nodes.java

Class CompareAndSwapNode

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.AbstractStateSplit

com.oracle.graal.nodes.memory.AbstractMemoryCheckpoint

com.oracle.graal.nodes.java.CompareAndSwapNode

All Implemented Interfaces:

NodeInterface, MemoryCheckpoint, MemoryCheckpoint.Single, MemoryNode, Lowerable, NodeWithState, StateSplit, Cloneable, Formattable, KindProvider

public final class CompareAndSwapNode
extends AbstractMemoryCheckpoint
implements Lowerable, MemoryCheckpoint.Single

Represents an atomic compare-and-swap operation The result is a boolean that contains whether the value matched the expected value.

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

Field Summary

Fields

Modifier and Type	Field and Description
(package private) ValueNode	expected
protected LocationIdentity	locationIdentity
(package private) ValueNode	newValue
(package private) ValueNode	object
(package private) ValueNode	offset
static NodeClass<CompareAndSwapNode>	TYPE
protected Kind	valueKind

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

stateAfter

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
CompareAndSwapNode(ValueNode object, ValueNode offset, ValueNode expected, ValueNode newValue, Kind valueKind, LocationIdentity locationIdentity)

Method Summary

Modifier and Type	Method and Description
ValueNode	expected()
LocationIdentity	getLocationIdentity() This method is used to determine which memory location is killed by this node.
Kind	getValueKind()
void	lower(LoweringTool tool) Expand this node into lower level nodes expressing the same semantics.
ValueNode	newValue()
ValueNode	object()
ValueNode	offset()

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

hasSideEffect, setStateAfter, stateAfter

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

Methods inherited from interface com.oracle.graal.nodes.StateSplit

asNode

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

states

Field Detail

TYPE

public static final NodeClass<CompareAndSwapNode> TYPE

object

ValueNode object

offset

ValueNode offset

expected

ValueNode expected

newValue

ValueNode newValue

valueKind

protected final Kind valueKind

locationIdentity

protected final LocationIdentity locationIdentity

Constructor Detail

CompareAndSwapNode

public CompareAndSwapNode(ValueNode object,
                          ValueNode offset,
                          ValueNode expected,
                          ValueNode newValue,
                          Kind valueKind,
                          LocationIdentity locationIdentity)

Method Detail

object

public ValueNode object()

offset

public ValueNode offset()

expected

public ValueNode expected()

newValue

public ValueNode newValue()

getValueKind

public Kind getValueKind()

getLocationIdentity

public LocationIdentity getLocationIdentity()

Description copied from interface: MemoryCheckpoint.Single

This method is used to determine which memory location is killed by this node. Returning the special value LocationIdentity.any() will kill all memory locations.

Specified by:

getLocationIdentity in interface MemoryCheckpoint.Single

Returns:

the identity of the location killed by this node.

lower

public void lower(LoweringTool tool)

Description copied from interface: Lowerable

Expand this node into lower level nodes expressing the same semantics. If the introduced nodes are themselves lowerable, they should be recursively lowered as part of this call.

Specified by:

lower in interface Lowerable