| J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2001-2004 Sun Microsystems, Inc. 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. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any questions. |
| 24 | */ |
| 25 | |
| 26 | package sun.reflect; |
| 27 | |
| 28 | import java.lang.reflect.Field; |
| 29 | import java.lang.reflect.Modifier; |
| 30 | import java.security.AccessController; |
| 31 | import sun.misc.Unsafe; |
| 32 | |
| 33 | /** Base class for sun.misc.Unsafe-based FieldAccessors for static |
| 34 | fields. The observation is that there are only nine types of |
| 35 | fields from the standpoint of reflection code: the eight primitive |
| 36 | types and Object. Using class Unsafe instead of generated |
| 37 | bytecodes saves memory and loading time for the |
| 38 | dynamically-generated FieldAccessors. */ |
| 39 | |
| 40 | abstract class UnsafeStaticFieldAccessorImpl extends UnsafeFieldAccessorImpl { |
| 41 | static { |
| 42 | Reflection.registerFieldsToFilter(UnsafeStaticFieldAccessorImpl.class, |
| 43 | new String[] { "base" }); |
| 44 | } |
| 45 | |
| 46 | protected Object base; // base |
| 47 | |
| 48 | UnsafeStaticFieldAccessorImpl(Field field) { |
| 49 | super(field); |
| 50 | base = unsafe.staticFieldBase(field); |
| 51 | } |
| 52 | } |