| /* |
| * Copyright (c) 2015, 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 |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package java.lang.invoke; |
| |
| import java.lang.invoke.MethodHandles.Lookup; |
| import jdk.internal.vm.annotation.DontInline; |
| import jdk.internal.vm.annotation.ForceInline; |
| /** |
| * Helper class to inject into java.lang.invoke that provides access to |
| * package-private methods in this package. |
| */ |
| |
| public class MethodHandleHelper { |
| |
| private MethodHandleHelper() { } |
| |
| public static final Lookup IMPL_LOOKUP = Lookup.IMPL_LOOKUP; |
| public static final Class<?> MHN_CALL_SITE_CONTEXT_CLASS |
| = MethodHandleNatives.CallSiteContext.class; |
| |
| public static void customize(MethodHandle mh) { |
| mh.customize(); |
| } |
| |
| @ForceInline |
| public static Object internalMemberName(MethodHandle mh) throws Throwable { |
| return mh.internalMemberName(); |
| } |
| |
| @ForceInline |
| public static void linkToStatic(MethodHandle mh, float arg, Object name) throws Throwable { |
| MethodHandle.linkToStatic(mh, arg, name); |
| } |
| |
| @ForceInline |
| public static void invokeBasicV(MethodHandle mh, float arg) throws Throwable { |
| mh.invokeBasic(arg); |
| } |
| |
| @ForceInline |
| public static Object invokeBasicL(MethodHandle mh) throws Throwable { |
| return mh.invokeBasic(); |
| } |
| |
| @ForceInline |
| public static int invokeBasicI(MethodHandle mh) throws Throwable { |
| return (int) mh.invokeBasic(); |
| } |
| |
| public static MethodHandle varargsArray(int nargs) { |
| return MethodHandleImpl.varargsArray(nargs); |
| } |
| |
| public static MethodHandle varargsArray(Class<?> arrayType, int nargs) { |
| return MethodHandleImpl.varargsArray(arrayType, nargs); |
| } |
| |
| public static LambdaForm getLambdaForm(MethodHandle mh) { |
| return mh.form; |
| } |
| |
| public static class NonInlinedReinvoker extends DelegatingMethodHandle { |
| private final MethodHandle target; |
| |
| private NonInlinedReinvoker(MethodHandle target, LambdaForm lf) { |
| super(target.type(), lf); |
| this.target = target; |
| } |
| @Override |
| public MethodHandle getTarget() { |
| return target; |
| } |
| |
| @Override |
| public MethodHandle asTypeUncached(MethodType newType) { |
| return asTypeCache = target.asType(newType); |
| } |
| |
| public static MethodHandle make(MethodHandle target) { |
| LambdaForm lform = DelegatingMethodHandle.makeReinvokerForm( |
| target, -1, DelegatingMethodHandle.class, "reinvoker.dontInline", |
| /*forceInline=*/false, DelegatingMethodHandle.NF_getTarget, null); |
| return new NonInlinedReinvoker(target, lform); |
| } |
| } |
| } |