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    1   /*
    2    * Copyright (c) 2001, Oracle and/or its affiliates. All rights reserved.
    3    * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
    4    *
    5    * This code is free software; you can redistribute it and/or modify it
    6    * under the terms of the GNU General Public License version 2 only, as
    7    * published by the Free Software Foundation.  Oracle designates this
    8    * particular file as subject to the "Classpath" exception as provided
    9    * by Oracle in the LICENSE file that accompanied this code.
   10    *
   11    * This code is distributed in the hope that it will be useful, but WITHOUT
   12    * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
   13    * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
   14    * version 2 for more details (a copy is included in the LICENSE file that
   15    * accompanied this code).
   16    *
   17    * You should have received a copy of the GNU General Public License version
   18    * 2 along with this work; if not, write to the Free Software Foundation,
   19    * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
   20    *
   21    * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
   22    * or visit www.oracle.com if you need additional information or have any
   23    * questions.
   24    */
   25   
   26   package sun.reflect;
   27   
   28   import java.lang.reflect;
   29   
   30   /** Used only for the first few invocations of a Method; afterward,
   31       switches to bytecode-based implementation */
   32   
   33   class NativeMethodAccessorImpl extends MethodAccessorImpl {
   34       private Method method;
   35       private DelegatingMethodAccessorImpl parent;
   36       private int numInvocations;
   37   
   38       NativeMethodAccessorImpl(Method method) {
   39           this.method = method;
   40       }
   41   
   42       public Object invoke(Object obj, Object[] args)
   43           throws IllegalArgumentException, InvocationTargetException
   44       {
   45           if (++numInvocations > ReflectionFactory.inflationThreshold()) {
   46               MethodAccessorImpl acc = (MethodAccessorImpl)
   47                   new MethodAccessorGenerator().
   48                       generateMethod(method.getDeclaringClass(),
   49                                      method.getName(),
   50                                      method.getParameterTypes(),
   51                                      method.getReturnType(),
   52                                      method.getExceptionTypes(),
   53                                      method.getModifiers());
   54               parent.setDelegate(acc);
   55           }
   56   
   57           return invoke0(method, obj, args);
   58       }
   59   
   60       void setParent(DelegatingMethodAccessorImpl parent) {
   61           this.parent = parent;
   62       }
   63   
   64       private static native Object invoke0(Method m, Object obj, Object[] args);
   65   }

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