1/*
2 * Copyright (c) 2011, 2019, 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_OOPS_INSTANCECLASSLOADERKLASS_HPP
26#define SHARE_OOPS_INSTANCECLASSLOADERKLASS_HPP
27
28#include "oops/instanceKlass.hpp"
29#include "utilities/macros.hpp"
30
31class ClassFileParser;
32
33// An InstanceClassLoaderKlass is a specialization of the InstanceKlass. It does
34// not add any field. It is added to walk the dependencies for the class loader
35// key that this class loader points to. This is how the loader_data graph is
36// walked and dependent class loaders are kept alive. I thought we walked
37// the list later?
38
39class InstanceClassLoaderKlass: public InstanceKlass {
40 friend class VMStructs;
41 friend class InstanceKlass;
42public:
43 static const KlassID ID = InstanceClassLoaderKlassID;
44
45private:
46 InstanceClassLoaderKlass(const ClassFileParser& parser) : InstanceKlass(parser, InstanceKlass::_misc_kind_class_loader, ID) {}
47
48public:
49 InstanceClassLoaderKlass() { assert(DumpSharedSpaces || UseSharedSpaces, "only for CDS"); }
50
51 // Oop fields (and metadata) iterators
52 //
53 // The InstanceClassLoaderKlass iterators also visit the CLD pointer (or mirror of anonymous klasses.)
54
55 // Forward iteration
56 // Iterate over the oop fields and metadata.
57 template <typename T, class OopClosureType>
58 inline void oop_oop_iterate(oop obj, OopClosureType* closure);
59
60 // Reverse iteration
61 // Iterate over the oop fields and metadata.
62 template <typename T, class OopClosureType>
63 inline void oop_oop_iterate_reverse(oop obj, OopClosureType* closure);
64
65 // Bounded range iteration
66 // Iterate over the oop fields and metadata.
67 template <typename T, class OopClosureType>
68 inline void oop_oop_iterate_bounded(oop obj, OopClosureType* closure, MemRegion mr);
69};
70
71#endif // SHARE_OOPS_INSTANCECLASSLOADERKLASS_HPP
72