1/*
2 * Copyright (c) 2015, 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_GC_G1_G1SURVIVORREGIONS_HPP
26#define SHARE_GC_G1_G1SURVIVORREGIONS_HPP
27
28#include "runtime/globals.hpp"
29
30template <typename T>
31class GrowableArray;
32class HeapRegion;
33
34class G1SurvivorRegions {
35private:
36 GrowableArray<HeapRegion*>* _regions;
37 volatile size_t _used_bytes;
38
39public:
40 G1SurvivorRegions();
41
42 void add(HeapRegion* hr);
43
44 void convert_to_eden();
45
46 void clear();
47
48 uint length() const;
49
50 const GrowableArray<HeapRegion*>* regions() const {
51 return _regions;
52 }
53
54 // Used bytes of all survivor regions.
55 size_t used_bytes() const { return _used_bytes; }
56
57 void add_used_bytes(size_t used_bytes);
58};
59
60#endif // SHARE_GC_G1_G1SURVIVORREGIONS_HPP
61