org.graalvm.compiler.hotspot.meta

Class HotSpotJITClassInitializationPlugin

java.lang.Object

org.graalvm.compiler.hotspot.meta.HotSpotJITClassInitializationPlugin

All Implemented Interfaces:

ClassInitializationPlugin, GraphBuilderPlugin

public final class HotSpotJITClassInitializationPlugin
extends Object
implements ClassInitializationPlugin

Constructor Summary

Constructors

Constructor and Description
HotSpotJITClassInitializationPlugin()

Method Summary

Modifier and Type	Method and Description
boolean	apply(GraphBuilderContext builder, ResolvedJavaType type, Supplier<FrameState> frameState, ValueNode[] classInit) Emits a class initialization barrier for type.
void	loadReferencedType(GraphBuilderContext builder, ConstantPool cp, int cpi, int opcode) Ensures that the type referenced by the constant pool entry specified by cp and cpi is loaded.
boolean	supportsLazyInitialization(ConstantPool cp) Determines if cp has a variation of ConstantPool.loadReferencedType(int, int) that can resolved a type without initializing it.

Methods inherited from class java.lang.Object

clone, equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.graalvm.compiler.nodes.graphbuilderconf.ClassInitializationPlugin

apply

Constructor Detail

HotSpotJITClassInitializationPlugin

public HotSpotJITClassInitializationPlugin()

Method Detail

apply

public boolean apply(GraphBuilderContext builder,
                     ResolvedJavaType type,
                     Supplier<FrameState> frameState,
                     ValueNode[] classInit)

Description copied from interface: ClassInitializationPlugin

Emits a class initialization barrier for type.

Specified by:

apply in interface ClassInitializationPlugin

frameState - supplier to create a frame state representing the state just prior to execution of the class initialization barrier

classInit - if non-null, the node representing the class initialization barrier should be returned in element 0 of this array

Returns:

true if this method emitted a barrier,false if not

supportsLazyInitialization

public boolean supportsLazyInitialization(ConstantPool cp)

Description copied from interface: ClassInitializationPlugin

Determines if cp has a variation of ConstantPool.loadReferencedType(int, int) that can resolved a type without initializing it.

Specified by:

supportsLazyInitialization in interface ClassInitializationPlugin

loadReferencedType

public void loadReferencedType(GraphBuilderContext builder,
                               ConstantPool cp,
                               int cpi,
                               int opcode)

Description copied from interface: ClassInitializationPlugin

Ensures that the type referenced by the constant pool entry specified by cp and cpi is loaded. If cp does not support lazy initialization, then the type is initialized after resolution.

Specified by:

loadReferencedType in interface ClassInitializationPlugin

cpi - the index of the constant pool entry that references the type

opcode - the opcode of the instruction that references the type