71 lines
2.8 KiB
Java
71 lines
2.8 KiB
Java
/*
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* Copyright (c) 2001, 2013, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package sun.reflect;
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import java.lang.reflect.*;
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import sun.reflect.misc.ReflectUtil;
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/** Used only for the first few invocations of a Method; afterward,
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switches to bytecode-based implementation */
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class NativeMethodAccessorImpl extends MethodAccessorImpl {
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private final Method method;
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private DelegatingMethodAccessorImpl parent;
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private int numInvocations;
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NativeMethodAccessorImpl(Method method) {
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this.method = method;
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}
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public Object invoke(Object obj, Object[] args)
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throws IllegalArgumentException, InvocationTargetException
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{
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// We can't inflate methods belonging to vm-anonymous classes because
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// that kind of class can't be referred to by name, hence can't be
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// found from the generated bytecode.
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if (++numInvocations > ReflectionFactory.inflationThreshold()
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&& !ReflectUtil.isVMAnonymousClass(method.getDeclaringClass())) {
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MethodAccessorImpl acc = (MethodAccessorImpl)
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new MethodAccessorGenerator().
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generateMethod(method.getDeclaringClass(),
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method.getName(),
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method.getParameterTypes(),
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method.getReturnType(),
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method.getExceptionTypes(),
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method.getModifiers());
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parent.setDelegate(acc);
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}
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return invoke0(method, obj, args);
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}
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void setParent(DelegatingMethodAccessorImpl parent) {
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this.parent = parent;
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}
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private static native Object invoke0(Method m, Object obj, Object[] args);
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}
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