com.oracle.graal.replacements

Class SnippetCounterNode

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.replacements.SnippetCounterNode

All Implemented Interfaces:

NodeInterface, Lowerable, Cloneable, Formattable, KindProvider

public class SnippetCounterNode
extends FixedWithNextNode
implements Lowerable

This node can be used to add a counter to the code that will estimate the dynamic number of calls by adding an increment to the compiled code. This should of course only be used for debugging/testing purposes. A unique counter will be created for each unique name passed to the constructor. Depending on the value of withContext, the name of the root method is added to the counter's name.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
(package private) static class	SnippetCounterNode.SnippetCounterSnippets

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 SnippetCounter	counter
protected ValueNode	increment
static LocationIdentity	SNIPPET_COUNTER_LOCATION We do not want to use the LocationIdentity of the SnippetCounter.value field, so that the usage in snippets is always possible.
static NodeClass<SnippetCounterNode>	TYPE

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
SnippetCounterNode(SnippetCounter counter, ValueNode increment)

Method Summary

Modifier and Type	Method and Description
static void	add(SnippetCounter counter, int increment)
static LocationIdentity[]	addSnippetCounters(LocationIdentity[] privateLocations) When #SnippetCounters are enabled make sure SNIPPET_COUNTER_LOCATION is part of the private locations.
SnippetCounter	getCounter()
ValueNode	getIncrement()
static void	increment(SnippetCounter counter)
void	lower(LoweringTool tool) Expand this node into lower level nodes expressing the same semantics.

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<SnippetCounterNode> TYPE

increment

protected ValueNode increment

counter

protected final SnippetCounter counter

SNIPPET_COUNTER_LOCATION

public static final LocationIdentity SNIPPET_COUNTER_LOCATION

We do not want to use the LocationIdentity of the SnippetCounter.value field, so that the usage in snippets is always possible. If a method accesses the counter via the field and the snippet, the result might not be correct though.

Constructor Detail

SnippetCounterNode

public SnippetCounterNode(SnippetCounter counter,
                          ValueNode increment)

Method Detail

getCounter

public SnippetCounter getCounter()

getIncrement

public ValueNode getIncrement()

add

public static void add(SnippetCounter counter,
                       int increment)

increment

public static void increment(SnippetCounter counter)

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

addSnippetCounters

public static LocationIdentity[] addSnippetCounters(LocationIdentity[] privateLocations)

When #SnippetCounters are enabled make sure SNIPPET_COUNTER_LOCATION is part of the private locations.

Parameters:

privateLocations -

Returns:

a copy of privateLocations with any needed locations added