53 lines
2.1 KiB
Java
53 lines
2.1 KiB
Java
/*
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* Copyright (c) 2001, 2012, 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.Field;
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import java.lang.reflect.Modifier;
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import java.security.AccessController;
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import sun.misc.Unsafe;
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/** Base class for sun.misc.Unsafe-based FieldAccessors for static
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fields. The observation is that there are only nine types of
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fields from the standpoint of reflection code: the eight primitive
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types and Object. Using class Unsafe instead of generated
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bytecodes saves memory and loading time for the
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dynamically-generated FieldAccessors. */
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abstract class UnsafeStaticFieldAccessorImpl extends UnsafeFieldAccessorImpl {
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static {
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Reflection.registerFieldsToFilter(UnsafeStaticFieldAccessorImpl.class,
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new String[] { "base" });
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}
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protected final Object base; // base
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UnsafeStaticFieldAccessorImpl(Field field) {
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super(field);
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base = unsafe.staticFieldBase(field);
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}
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}
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