1 /*
2 * Copyright (c) 2018, 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_SHARED_MARKBITMAP_INLINE_HPP
26 #define SHARE_GC_SHARED_MARKBITMAP_INLINE_HPP
27
28 #include "gc/shared/collectedHeap.hpp"
29 #include "gc/shared/markBitMap.hpp"
30 #include "memory/memRegion.hpp"
31 #include "utilities/align.hpp"
32 #include "utilities/bitMap.inline.hpp"
33
get_next_marked_addr(const HeapWord * addr,const HeapWord * limit) const34 inline HeapWord* MarkBitMap::get_next_marked_addr(const HeapWord* addr,
35 const HeapWord* limit) const {
36 assert(limit != NULL, "limit must not be NULL");
37 // Round addr up to a possible object boundary to be safe.
38 size_t const addr_offset = addr_to_offset(align_up(addr, HeapWordSize << _shifter));
39 size_t const limit_offset = addr_to_offset(limit);
40 size_t const nextOffset = _bm.get_next_one_offset(addr_offset, limit_offset);
41 return offset_to_addr(nextOffset);
42 }
43
mark(HeapWord * addr)44 inline void MarkBitMap::mark(HeapWord* addr) {
45 check_mark(addr);
46 _bm.set_bit(addr_to_offset(addr));
47 }
48
mark(oop obj)49 inline void MarkBitMap::mark(oop obj) {
50 return mark(cast_from_oop<HeapWord*>(obj));
51 }
52
clear(HeapWord * addr)53 inline void MarkBitMap::clear(HeapWord* addr) {
54 check_mark(addr);
55 _bm.clear_bit(addr_to_offset(addr));
56 }
57
par_mark(HeapWord * addr)58 inline bool MarkBitMap::par_mark(HeapWord* addr) {
59 check_mark(addr);
60 return _bm.par_set_bit(addr_to_offset(addr));
61 }
62
par_mark(oop obj)63 inline bool MarkBitMap::par_mark(oop obj) {
64 return par_mark(cast_from_oop<HeapWord*>(obj));
65 }
66
is_marked(oop obj) const67 inline bool MarkBitMap::is_marked(oop obj) const{
68 return is_marked(cast_from_oop<HeapWord*>(obj));
69 }
70
clear(oop obj)71 inline void MarkBitMap::clear(oop obj) {
72 clear(cast_from_oop<HeapWord*>(obj));
73 }
74
75 #endif // SHARE_GC_SHARED_MARKBITMAP_INLINE_HPP
76