1/*
2 * Copyright (c) 2017, 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_GC_G1_G1FULLGCCOMPACTIONPOINT_HPP
26#define SHARE_GC_G1_G1FULLGCCOMPACTIONPOINT_HPP
27
28#include "memory/allocation.hpp"
29#include "oops/oopsHierarchy.hpp"
30#include "utilities/growableArray.hpp"
31
32class HeapRegion;
33
34class G1FullGCCompactionPoint : public CHeapObj<mtGC> {
35 HeapRegion* _current_region;
36 HeapWord* _threshold;
37 HeapWord* _compaction_top;
38 GrowableArray<HeapRegion*>* _compaction_regions;
39 GrowableArrayIterator<HeapRegion*> _compaction_region_iterator;
40
41 bool object_will_fit(size_t size);
42 void initialize_values(bool init_threshold);
43 void switch_region();
44 HeapRegion* next_region();
45
46public:
47 G1FullGCCompactionPoint();
48 ~G1FullGCCompactionPoint();
49
50 bool has_regions();
51 bool is_initialized();
52 void initialize(HeapRegion* hr, bool init_threshold);
53 void update();
54 void forward(oop object, size_t size);
55 void add(HeapRegion* hr);
56 void merge(G1FullGCCompactionPoint* other);
57
58 HeapRegion* remove_last();
59 HeapRegion* current_region();
60
61 GrowableArray<HeapRegion*>* regions();
62};
63
64#endif // SHARE_GC_G1_G1FULLGCCOMPACTIONPOINT_HPP
65