1/*
2 * Copyright (c) 2016, 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.
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23 */
24
25#ifndef SHARE_GC_SHARED_REFERENCEPROCESSOR_INLINE_HPP
26#define SHARE_GC_SHARED_REFERENCEPROCESSOR_INLINE_HPP
27
28#include "gc/shared/referenceProcessor.hpp"
29#include "oops/compressedOops.inline.hpp"
30#include "oops/oop.hpp"
31
32oop DiscoveredList::head() const {
33 return UseCompressedOops ? CompressedOops::decode(_compressed_head) :
34 _oop_head;
35}
36
37void DiscoveredList::set_head(oop o) {
38 if (UseCompressedOops) {
39 // Must compress the head ptr.
40 _compressed_head = CompressedOops::encode(o);
41 } else {
42 _oop_head = o;
43 }
44}
45
46bool DiscoveredList::is_empty() const {
47 return head() == NULL;
48}
49
50void DiscoveredList::clear() {
51 set_head(NULL);
52 set_length(0);
53}
54
55DiscoveredListIterator::DiscoveredListIterator(DiscoveredList& refs_list,
56 OopClosure* keep_alive,
57 BoolObjectClosure* is_alive):
58 _refs_list(refs_list),
59 _prev_discovered_addr(refs_list.adr_head()),
60 _prev_discovered(NULL),
61 _current_discovered(refs_list.head()),
62 _current_discovered_addr(NULL),
63 _next_discovered(NULL),
64 _referent_addr(NULL),
65 _referent(NULL),
66 _keep_alive(keep_alive),
67 _is_alive(is_alive),
68#ifdef ASSERT
69 _first_seen(refs_list.head()),
70#endif
71 _processed(0),
72 _removed(0) {
73}
74
75#endif // SHARE_GC_SHARED_REFERENCEPROCESSOR_INLINE_HPP
76