Mercurial > hg > graal-compiler
annotate agent/src/share/classes/sun/jvm/hotspot/types/basic/VtblAccess.java @ 14909:4ca6dc0799b6
Backout jdk9 merge
| author | Gilles Duboscq <duboscq@ssw.jku.at> |
|---|---|
| date | Tue, 01 Apr 2014 13:57:07 +0200 |
| parents | c18cbe5936b8 |
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| rev | line source |
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| 0 | 1 /* |
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2 * Copyright (c) 2000, 2002, Oracle and/or its affiliates. All rights reserved. |
| 0 | 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. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 25 package sun.jvm.hotspot.types.basic; | |
| 26 | |
| 27 import sun.jvm.hotspot.debugger.*; | |
| 28 import sun.jvm.hotspot.types.*; | |
| 29 | |
| 30 /** This interface is designed to allow a platform-specific | |
| 31 implementation of the TypeDataBase.isOfType() method, while | |
| 32 leaving the rest of the basic.* package platform independent. */ | |
| 33 | |
| 34 public interface VtblAccess { | |
| 35 /** This is the necessarily platform-specific implementation. | |
| 36 Attempt to return the address of the vtbl for the given | |
| 37 polymorphic C++ type. This value will be used when searching | |
| 38 nearby memory to implement isOfType() in as platform-independent | |
| 39 a manner as possible. Returns null if this value was not | |
| 40 available for the given type, which might indicate that the type | |
| 41 was not polymorphic or that an error occurred while trying to | |
| 42 find the symbol. Note that this method does not support multiple | |
| 43 inheritance. */ | |
| 44 public Address getVtblForType(Type type); | |
| 45 | |
| 46 /** Clear any cached values from symbol lookups in the target | |
| 47 process. It is important that this mechanism be fast and for | |
| 48 that reason the default implementation memoizes type-to-vtbl | |
| 49 mappings. However, if the target process is resumed, these | |
| 50 mappings may become invalid. */ | |
| 51 public void clearCaches(); | |
| 52 } |