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8187826: Avoid using reflection to bootstrap NamedFunctions

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Reviewed-by: psandoz
This commit is contained in:
Claes Redestad 2017-09-27 17:56:00 +02:00
parent 2e46c1508a
commit 0355224df8
3 changed files with 48 additions and 36 deletions
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27
src/java.base/share/classes/java/lang/invoke/Invokers.java
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@ -611,23 +611,17 @@ class Invokers {
try {
switch (func) {
case NF_checkExactType:
return new NamedFunction(Invokers.class
.getDeclaredMethod("checkExactType", MethodHandle.class, MethodType.class));
return getNamedFunction("checkExactType", MethodType.methodType(void.class, MethodHandle.class, MethodType.class));
case NF_checkGenericType:
return new NamedFunction(Invokers.class
.getDeclaredMethod("checkGenericType", MethodHandle.class, MethodType.class));
return getNamedFunction("checkGenericType", MethodType.methodType(MethodHandle.class, MethodHandle.class, MethodType.class));
case NF_getCallSiteTarget:
return new NamedFunction(Invokers.class
.getDeclaredMethod("getCallSiteTarget", CallSite.class));
return getNamedFunction("getCallSiteTarget", MethodType.methodType(MethodHandle.class, CallSite.class));
case NF_checkCustomized:
return new NamedFunction(Invokers.class
.getDeclaredMethod("checkCustomized", MethodHandle.class));
return getNamedFunction("checkCustomized", MethodType.methodType(void.class, MethodHandle.class));
case NF_checkVarHandleGenericType:
return new NamedFunction(Invokers.class
.getDeclaredMethod("checkVarHandleGenericType", VarHandle.class, VarHandle.AccessDescriptor.class));
return getNamedFunction("checkVarHandleGenericType", MethodType.methodType(MethodHandle.class, VarHandle.class, VarHandle.AccessDescriptor.class));
case NF_checkVarHandleExactType:
return new NamedFunction(Invokers.class
.getDeclaredMethod("checkVarHandleExactType", VarHandle.class, VarHandle.AccessDescriptor.class));
return getNamedFunction("checkVarHandleExactType", MethodType.methodType(MethodHandle.class, VarHandle.class, VarHandle.AccessDescriptor.class));
default:
throw newInternalError("Unknown function: " + func);
}
@ -636,6 +630,15 @@ class Invokers {
}
}
private static NamedFunction getNamedFunction(String name, MethodType type)
throws ReflectiveOperationException
{
MemberName member = new MemberName(Invokers.class, name, type, REF_invokeStatic);
return new NamedFunction(
MemberName.getFactory()
.resolveOrFail(REF_invokeStatic, member, Invokers.class, NoSuchMethodException.class));
}
private static class Lazy {
private static final MethodHandle MH_asSpreader;