| /* |
| * Copyright (c) 2000, 2002, 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. |
| * |
| * 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.jvm.hotspot.types.basic; |
| |
| import sun.jvm.hotspot.debugger.*; |
| import sun.jvm.hotspot.types.*; |
| |
| /** This interface is designed to allow a platform-specific |
| implementation of the TypeDataBase.isOfType() method, while |
| leaving the rest of the basic.* package platform independent. */ |
| |
| public interface VtblAccess { |
| /** This is the necessarily platform-specific implementation. |
| Attempt to return the address of the vtbl for the given |
| polymorphic C++ type. This value will be used when searching |
| nearby memory to implement isOfType() in as platform-independent |
| a manner as possible. Returns null if this value was not |
| available for the given type, which might indicate that the type |
| was not polymorphic or that an error occurred while trying to |
| find the symbol. Note that this method does not support multiple |
| inheritance. */ |
| public Address getVtblForType(Type type); |
| |
| /** Clear any cached values from symbol lookups in the target |
| process. It is important that this mechanism be fast and for |
| that reason the default implementation memoizes type-to-vtbl |
| mappings. However, if the target process is resumed, these |
| mappings may become invalid. */ |
| public void clearCaches(); |
| } |