jdk.internal.jvmci.meta

Interface MethodHandleAccessProvider

public interface MethodHandleAccessProvider

Interface to access the internals of the MethodHandle implementation of the VM. An implementation of this interface is usually required to access non-public classes, methods, and fields of MethodHandle, i.e., data that is not standardized by the Java specification.

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static class	MethodHandleAccessProvider.IntrinsicMethod Identification for methods defined on the class MethodHandle that are processed by the MethodHandleAccessProvider.

Method Summary

Modifier and Type	Method and Description
MethodHandleAccessProvider.IntrinsicMethod	lookupMethodHandleIntrinsic(ResolvedJavaMethod method) Returns the method handle method intrinsic identifier for the provided method, or null if the method is not an intrinsic processed by this interface.
ResolvedJavaMethod	resolveInvokeBasicTarget(JavaConstant methodHandle, boolean forceBytecodeGeneration) Resolves the invocation target for an invocation of MethodHandle.invokeBasic with the given constant receiver MethodHandle.
ResolvedJavaMethod	resolveLinkToTarget(JavaConstant memberName) Resolves the invocation target for an invocation of a MethodHandle.linkTo* method with the given constant member name.

Method Detail

lookupMethodHandleIntrinsic

MethodHandleAccessProvider.IntrinsicMethod lookupMethodHandleIntrinsic(ResolvedJavaMethod method)

Returns the method handle method intrinsic identifier for the provided method, or null if the method is not an intrinsic processed by this interface.

resolveInvokeBasicTarget

ResolvedJavaMethod resolveInvokeBasicTarget(JavaConstant methodHandle,
                                            boolean forceBytecodeGeneration)

Resolves the invocation target for an invocation of MethodHandle.invokeBasic with the given constant receiver MethodHandle. Returns null if the invocation target is not available at this time.

The first invocations of a method handle can use an interpreter to lookup the actual invoked method; frequently executed method handles can use Java bytecode generation to avoid the interpreter overhead. If the parameter forceBytecodeGeneration is set to true, the VM should try to generate bytecodes before this method returns.

resolveLinkToTarget

ResolvedJavaMethod resolveLinkToTarget(JavaConstant memberName)

Resolves the invocation target for an invocation of a MethodHandle.linkTo* method with the given constant member name. The member name is the last parameter of the linkTo* method. Returns null if the invocation target is not available at this time.