| /* |
| * Copyright (c) 2001, 2013, 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. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * 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 sun.reflect; |
| |
| import java.lang.reflect.*; |
| import sun.reflect.misc.ReflectUtil; |
| |
| /** Used only for the first few invocations of a Method; afterward, |
| switches to bytecode-based implementation */ |
| |
| class NativeMethodAccessorImpl extends MethodAccessorImpl { |
| private final Method method; |
| private DelegatingMethodAccessorImpl parent; |
| private int numInvocations; |
| |
| NativeMethodAccessorImpl(Method method) { |
| this.method = method; |
| } |
| |
| public Object invoke(Object obj, Object[] args) |
| throws IllegalArgumentException, InvocationTargetException |
| { |
| // We can't inflate methods belonging to vm-anonymous classes because |
| // that kind of class can't be referred to by name, hence can't be |
| // found from the generated bytecode. |
| if (++numInvocations > ReflectionFactory.inflationThreshold() |
| && !ReflectUtil.isVMAnonymousClass(method.getDeclaringClass())) { |
| MethodAccessorImpl acc = (MethodAccessorImpl) |
| new MethodAccessorGenerator(). |
| generateMethod(method.getDeclaringClass(), |
| method.getName(), |
| method.getParameterTypes(), |
| method.getReturnType(), |
| method.getExceptionTypes(), |
| method.getModifiers()); |
| parent.setDelegate(acc); |
| } |
| |
| return invoke0(method, obj, args); |
| } |
| |
| void setParent(DelegatingMethodAccessorImpl parent) { |
| this.parent = parent; |
| } |
| |
| private static native Object invoke0(Method m, Object obj, Object[] args); |
| } |