org.dynalang.dynalink

Class MonomorphicCallSite

java.lang.Object

java.lang.invoke.CallSite

java.lang.invoke.MutableCallSite

org.dynalang.dynalink.support.AbstractRelinkableCallSite

org.dynalang.dynalink.MonomorphicCallSite

All Implemented Interfaces:

RelinkableCallSite

public class MonomorphicCallSite
extends AbstractRelinkableCallSite

A relinkable call site that implements monomorphic inline caching strategy. After it linked a method, it will keep it until either its guard evaluates to false, or its switchpoint is invalidated, at which time it will throw away the previous linkage, and trigger relinking with its associated DynamicLinker.

Author:

Attila Szegedi

Constructor Summary

Constructors

Constructor and Description
MonomorphicCallSite(CallSiteDescriptor descriptor) Creates a new call site with monomorphic inline caching strategy.

Method Summary

Methods

Modifier and Type	Method and Description
void	setGuardedInvocation(GuardedInvocation guardedInvocation, MethodHandle relink) This method will be called once by the dynamic linker every time the call site is relinked.

Methods inherited from class org.dynalang.dynalink.support.AbstractRelinkableCallSite

getDescriptor, setRelinkAndInvoke

Methods inherited from class java.lang.invoke.MutableCallSite

dynamicInvoker, getTarget, setTarget, syncAll

Methods inherited from class java.lang.invoke.CallSite

type

Methods inherited from class java.lang.Object

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

Constructor Detail

MonomorphicCallSite

public MonomorphicCallSite(CallSiteDescriptor descriptor)

Creates a new call site with monomorphic inline caching strategy.

Parameters:

descriptor - the descriptor for this call site

Method Detail

setGuardedInvocation

public void setGuardedInvocation(GuardedInvocation guardedInvocation,
                        MethodHandle relink)

Description copied from interface: RelinkableCallSite

This method will be called once by the dynamic linker every time the call site is relinked.

Parameters:

guardedInvocation - the guarded invocation that the call site should set as its current target. Note that the call sites are allowed to keep other non-invalidated invocations around for implementation of polymorphic inline caches.

relink - the fallback method. This is a method matching the method type of the call site that is supplied by the DynamicLinker to be used by this call site as a fallback when it can't invoke its target with the passed arguments. The fallback method is such that when it's invoked, it'll try to discover the adequate target for the invocation, subsequently invoke RelinkableCallSite.setGuardedInvocation(GuardedInvocation, MethodHandle), and finally invoke the target.