com.oracle.graal.nodes

Class BreakpointNode

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.BreakpointNode

All Implemented Interfaces:

LIRLowerable, Cloneable, Formattable, KindProvider

public final class BreakpointNode
extends FixedWithNextNode
implements LIRLowerable

A node that results in a platform dependent breakpoint instruction being emitted. A number of arguments can be associated with such a node for placing values of interest in the Java ABI specified parameter locations corresponding to the kinds of the values. That is, the arguments are set up as if the breakpoint instruction was a call to a compiled Java method.

A breakpoint is usually place by defining a node intrinsic method as follows:

      @NodeIntrinsic(BreakpointNode.class)
     static void breakpoint(Object object, Word mark, Word value) {
          throw new JVMCIError("");
     }
 

Note that the signature is arbitrary. It's sole purpose is to capture values you may want to inspect in the native debugger when the breakpoint is hit.

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
(package private) NodeInputList<ValueNode>	arguments
static NodeClass<BreakpointNode>	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
BreakpointNode(ValueNode... arguments)

Method Summary

Modifier and Type	Method and Description
NodeInputList<ValueNode>	arguments()
static void	breakpoint()
void	generate(NodeLIRBuilderTool gen)

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

Field Detail

TYPE

public static final NodeClass<BreakpointNode> TYPE

arguments

NodeInputList<ValueNode> arguments

Constructor Detail

BreakpointNode

public BreakpointNode(ValueNode... arguments)

Method Detail

generate

public void generate(NodeLIRBuilderTool gen)

Specified by:

generate in interface LIRLowerable

arguments

public NodeInputList<ValueNode> arguments()

breakpoint

public static void breakpoint()