1/*
2 * Copyright (c) 2001, 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,
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23 */
24
25#ifndef SHARE_GC_SHARED_GENERATIONSPEC_HPP
26#define SHARE_GC_SHARED_GENERATIONSPEC_HPP
27
28#include "gc/shared/generation.hpp"
29#include "utilities/align.hpp"
30
31// The specification of a generation. This class also encapsulates
32// some generation-specific behavior. This is done here rather than as a
33// virtual function of Generation because these methods are needed in
34// initialization of the Generations.
35class GenerationSpec : public CHeapObj<mtGC> {
36 friend class VMStructs;
37private:
38 Generation::Name _name;
39 size_t _init_size;
40 size_t _min_size;
41 size_t _max_size;
42
43public:
44 GenerationSpec(Generation::Name name, size_t init_size, size_t max_size, size_t alignment) :
45 _name(name),
46 _init_size(align_up(init_size, alignment)),
47 _max_size(align_up(max_size, alignment))
48 { }
49
50 Generation* init(ReservedSpace rs, CardTableRS* remset);
51
52 Generation::Name name() const { return _name; }
53 size_t init_size() const { return _init_size; }
54 size_t min_size() const { return _min_size; }
55 size_t max_size() const { return _max_size; }
56};
57
58typedef GenerationSpec* GenerationSpecPtr;
59
60#endif // SHARE_GC_SHARED_GENERATIONSPEC_HPP
61