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8254354: Add a withInvokeExactBehavior() VarHandle combinator

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Reviewed-by: psandoz, chegar
This commit is contained in:
Jorn Vernee 2020-11-10 23:26:02 +00:00
parent d6f1463cb3
commit 0a41ca6b75
12 changed files with 1660 additions and 459 deletions
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6
src/java.base/share/classes/java/lang/invoke/Invokers.java
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@ -27,6 +27,7 @@ package java.lang.invoke;
import jdk.internal.vm.annotation.DontInline;
import jdk.internal.vm.annotation.ForceInline;
import jdk.internal.vm.annotation.Hidden;
import jdk.internal.vm.annotation.Stable;
import java.lang.reflect.Array;
@ -463,7 +464,12 @@ class Invokers {
@ForceInline
/*non-public*/
@Hidden
static MethodHandle checkVarHandleGenericType(VarHandle handle, VarHandle.AccessDescriptor ad) {
if (handle.hasInvokeExactBehavior() && handle.accessModeType(ad.type) != ad.symbolicMethodTypeExact) {
throw new WrongMethodTypeException("expected " + handle.accessModeType(ad.type) + " but found "
+ ad.symbolicMethodTypeExact);
}
// Test for exact match on invoker types
// TODO match with erased types and add cast of return value to lambda form
MethodHandle mh = handle.getMethodHandle(ad.mode);