1 /*
2 * Copyright (c) 2023, Oracle and/or its affiliates. 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.
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 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #ifndef SHARE_CDS_REGENERATEDCLASSES_HPP
26 #define SHARE_CDS_REGENERATEDCLASSES_HPP
27
28 #include "memory/allStatic.hpp"
29 #include "utilities/globalDefinitions.hpp"
30
31 class InstanceKlass;
32
33 // CDS regenerates some of the classes that are loaded normally during the dumping
34 // process. For example, LambdaFormInvokers creates new versions of the four
35 // java.lang.invoke.xxx$Holder classes that have additional methods.
36 //
37 // RegeneratedClasses records the relocation between the "original" and
38 // "regenerated" versions of these classes. When writing the CDS archive, all
39 // references to the "original" versions are redirected to the "regenerated"
40 // versions.
41 class RegeneratedClasses : public AllStatic {
42 public:
43 static void add_class(InstanceKlass* orig_klass, InstanceKlass* regen_klass);
44 static void cleanup();
45 static bool has_been_regenerated(address orig_obj);
46 static address get_regenerated_object(address orig_obj);
47 static void record_regenerated_objects();
48 };
49
50 #endif // SHARE_CDS_REGENERATEDCLASSES_HPP
--- EOF ---