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
25#ifndef SHARE_GC_G1_G1CONCURRENTMARKBITMAP_INLINE_HPP
26#define SHARE_GC_G1_G1CONCURRENTMARKBITMAP_INLINE_HPP
27
28#include "gc/g1/g1ConcurrentMarkBitMap.hpp"
29#include "gc/shared/markBitMap.inline.hpp"
30#include "memory/memRegion.hpp"
31#include "utilities/align.hpp"
32#include "utilities/bitMap.inline.hpp"
33
34inline bool G1CMBitMap::iterate(G1CMBitMapClosure* cl, MemRegion mr) {
35 assert(!mr.is_empty(), "Does not support empty memregion to iterate over");
36 assert(_covered.contains(mr),
37 "Given MemRegion from " PTR_FORMAT " to " PTR_FORMAT " not contained in heap area",
38 p2i(mr.start()), p2i(mr.end()));
39
40 BitMap::idx_t const end_offset = addr_to_offset(mr.end());
41 BitMap::idx_t offset = _bm.get_next_one_offset(addr_to_offset(mr.start()), end_offset);
42
43 while (offset < end_offset) {
44 HeapWord* const addr = offset_to_addr(offset);
45 if (!cl->do_addr(addr)) {
46 return false;
47 }
48 size_t const obj_size = (size_t)((oop)addr)->size();
49 offset = _bm.get_next_one_offset(offset + (obj_size >> _shifter), end_offset);
50 }
51 return true;
52}
53
54#endif // SHARE_GC_G1_G1CONCURRENTMARKBITMAP_INLINE_HPP
55