1/*
2 * Copyright (c) 2017, 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#ifndef SHARE_GC_Z_ZGRANULEMAP_HPP
25#define SHARE_GC_Z_ZGRANULEMAP_HPP
26
27#include "memory/allocation.hpp"
28
29template<typename T>
30class ZGranuleMapIterator;
31
32template <typename T>
33class ZGranuleMap {
34 friend class VMStructs;
35 friend class ZGranuleMapIterator<T>;
36
37private:
38 const size_t _size;
39 T* const _map;
40
41 size_t index_for_addr(uintptr_t addr) const;
42
43public:
44 ZGranuleMap();
45 ~ZGranuleMap();
46
47 T get(uintptr_t addr) const;
48 void put(uintptr_t addr, T value);
49 void put(uintptr_t addr, size_t size, T value);
50};
51
52template <typename T>
53class ZGranuleMapIterator : public StackObj {
54public:
55 const ZGranuleMap<T>* const _map;
56 size_t _next;
57
58public:
59 ZGranuleMapIterator(const ZGranuleMap<T>* map);
60
61 bool next(T* value);
62 bool next(T** value);
63};
64
65#endif // SHARE_GC_Z_ZGRANULEMAP_HPP
66