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8071368: Use more concrete types for NamedFunction constants in the code

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Reviewed-by: psandoz, vlivanov, mhaupt
This commit is contained in:
Shilpi Rastogi 2016-02-10 11:04:13 +01:00
parent 3e45966cd3
commit ff97659a79
1 changed files with 10 additions and 15 deletions
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25
jdk/src/java.base/share/classes/java/lang/invoke/Invokers.java
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2008, 2013, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2008, 2016, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@ -305,9 +305,7 @@ class Invokers {
/** Static definition of MethodHandle.invokeExact checking code. */
/*non-public*/ static
@ForceInline
void checkExactType(Object mhObj, Object expectedObj) {
MethodHandle mh = (MethodHandle) mhObj;
MethodType expected = (MethodType) expectedObj;
void checkExactType(MethodHandle mh, MethodType expected) {
MethodType actual = mh.type();
if (actual != expected)
throw newWrongMethodTypeException(expected, actual);
@ -319,9 +317,7 @@ class Invokers {
*/
/*non-public*/ static
@ForceInline
Object checkGenericType(Object mhObj, Object expectedObj) {
MethodHandle mh = (MethodHandle) mhObj;
MethodType expected = (MethodType) expectedObj;
MethodHandle checkGenericType(MethodHandle mh, MethodType expected) {
return mh.asType(expected);
/* Maybe add more paths here. Possible optimizations:
* for (R)MH.invoke(a*),
@ -390,14 +386,13 @@ class Invokers {
/** Static definition of MethodHandle.invokeGeneric checking code. */
/*non-public*/ static
@ForceInline
Object getCallSiteTarget(Object site) {
return ((CallSite)site).getTarget();
MethodHandle getCallSiteTarget(CallSite site) {
return site.getTarget();
}
/*non-public*/ static
@ForceInline
void checkCustomized(Object o) {
MethodHandle mh = (MethodHandle)o;
void checkCustomized(MethodHandle mh) {
if (MethodHandleImpl.isCompileConstant(mh)) return;
if (mh.form.customized == null) {
maybeCustomize(mh);
@ -425,13 +420,13 @@ class Invokers {
try {
NamedFunction nfs[] = {
NF_checkExactType = new NamedFunction(Invokers.class
.getDeclaredMethod("checkExactType", Object.class, Object.class)),
.getDeclaredMethod("checkExactType", MethodHandle.class, MethodType.class)),
NF_checkGenericType = new NamedFunction(Invokers.class
.getDeclaredMethod("checkGenericType", Object.class, Object.class)),
.getDeclaredMethod("checkGenericType", MethodHandle.class, MethodType.class)),
NF_getCallSiteTarget = new NamedFunction(Invokers.class
.getDeclaredMethod("getCallSiteTarget", Object.class)),
.getDeclaredMethod("getCallSiteTarget", CallSite.class)),
NF_checkCustomized = new NamedFunction(Invokers.class
.getDeclaredMethod("checkCustomized", Object.class))
.getDeclaredMethod("checkCustomized", MethodHandle.class))
};
// Each nf must be statically invocable or we get tied up in our bootstraps.
assert(InvokerBytecodeGenerator.isStaticallyInvocable(nfs));