1/*
2 * Copyright (c) 2003, 2015, 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
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23 */
24
25#ifndef SHARE_VM_GC_PARALLEL_ASPSYOUNGGEN_HPP
26#define SHARE_VM_GC_PARALLEL_ASPSYOUNGGEN_HPP
27
28#include "gc/parallel/mutableSpace.hpp"
29#include "gc/parallel/objectStartArray.hpp"
30#include "gc/parallel/psVirtualspace.hpp"
31#include "gc/parallel/psYoungGen.hpp"
32#include "gc/parallel/spaceCounters.hpp"
33#include "gc/shared/generationCounters.hpp"
34#include "gc/shared/spaceDecorator.hpp"
35
36class ASPSYoungGen : public PSYoungGen {
37  friend class VMStructs;
38 private:
39  size_t _gen_size_limit;
40 protected:
41  virtual size_t available_to_live();
42
43 public:
44  ASPSYoungGen(size_t         initial_byte_size,
45               size_t         minimum_byte_size,
46               size_t         byte_size_limit);
47
48  ASPSYoungGen(PSVirtualSpace* vs,
49               size_t         initial_byte_size,
50               size_t         minimum_byte_size,
51               size_t         byte_size_limit);
52
53  void initialize(ReservedSpace rs, size_t alignment);
54  void initialize_virtual_space(ReservedSpace rs, size_t alignment);
55
56  size_t gen_size_limit() { return _gen_size_limit; }
57  void set_gen_size_limit(size_t v) { _gen_size_limit = v; }
58
59  bool resize_generation(size_t eden_size, size_t survivor_size);
60  void resize_spaces(size_t eden_size, size_t survivor_size);
61
62  // Adjust eden to be consistent with the virtual space.
63  void reset_after_change();
64
65  // Adaptive size policy support
66  // Return number of bytes that the generation can expand/contract.
67  size_t available_for_expansion();
68  size_t available_for_contraction();
69
70  // Accessors
71  void set_reserved(MemRegion v) { _reserved = v; }
72
73  // Printing support
74  virtual const char* short_name() const { return "ASPSYoungGen"; }
75};
76
77#endif // SHARE_VM_GC_PARALLEL_ASPSYOUNGGEN_HPP
78