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.
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23 */
24
25#ifndef SHARE_GC_G1_G1FULLGCOOPCLOSURES_INLINE_HPP
26#define SHARE_GC_G1_G1FULLGCOOPCLOSURES_INLINE_HPP
27
28#include "gc/g1/g1Allocator.inline.hpp"
29#include "gc/g1/g1ConcurrentMarkBitMap.inline.hpp"
30#include "gc/g1/g1FullGCMarker.inline.hpp"
31#include "gc/g1/g1FullGCOopClosures.hpp"
32#include "gc/g1/heapRegionRemSet.hpp"
33#include "memory/iterator.inline.hpp"
34#include "memory/universe.hpp"
35#include "oops/access.inline.hpp"
36#include "oops/compressedOops.inline.hpp"
37#include "oops/oop.inline.hpp"
38
39template <typename T>
40inline void G1MarkAndPushClosure::do_oop_work(T* p) {
41 _marker->mark_and_push(p);
42}
43
44inline void G1MarkAndPushClosure::do_oop(oop* p) {
45 do_oop_work(p);
46}
47
48inline void G1MarkAndPushClosure::do_oop(narrowOop* p) {
49 do_oop_work(p);
50}
51
52inline bool G1MarkAndPushClosure::do_metadata() {
53 return true;
54}
55
56inline void G1MarkAndPushClosure::do_klass(Klass* k) {
57 _marker->follow_klass(k);
58}
59
60inline void G1MarkAndPushClosure::do_cld(ClassLoaderData* cld) {
61 _marker->follow_cld(cld);
62}
63
64template <class T> inline void G1AdjustClosure::adjust_pointer(T* p) {
65 T heap_oop = RawAccess<>::oop_load(p);
66 if (CompressedOops::is_null(heap_oop)) {
67 return;
68 }
69
70 oop obj = CompressedOops::decode_not_null(heap_oop);
71 assert(Universe::heap()->is_in(obj), "should be in heap");
72 if (G1ArchiveAllocator::is_archived_object(obj)) {
73 // We never forward archive objects.
74 return;
75 }
76
77 oop forwardee = obj->forwardee();
78 if (forwardee == NULL) {
79 // Not forwarded, return current reference.
80 assert(obj->mark_raw() == markOopDesc::prototype_for_object(obj) || // Correct mark
81 obj->mark_raw()->must_be_preserved(obj) || // Will be restored by PreservedMarksSet
82 (UseBiasedLocking && obj->has_bias_pattern_raw()), // Will be restored by BiasedLocking
83 "Must have correct prototype or be preserved, obj: " PTR_FORMAT ", mark: " PTR_FORMAT ", prototype: " PTR_FORMAT,
84 p2i(obj), p2i(obj->mark_raw()), p2i(markOopDesc::prototype_for_object(obj)));
85 return;
86 }
87
88 // Forwarded, just update.
89 assert(Universe::heap()->is_in_reserved(forwardee), "should be in object space");
90 RawAccess<IS_NOT_NULL>::oop_store(p, forwardee);
91}
92
93inline void G1AdjustClosure::do_oop(oop* p) { do_oop_work(p); }
94inline void G1AdjustClosure::do_oop(narrowOop* p) { do_oop_work(p); }
95
96inline bool G1IsAliveClosure::do_object_b(oop p) {
97 return _bitmap->is_marked(p) || G1ArchiveAllocator::is_closed_archive_object(p);
98}
99
100template<typename T>
101inline void G1FullKeepAliveClosure::do_oop_work(T* p) {
102 _marker->mark_and_push(p);
103}
104
105#endif // SHARE_GC_G1_G1FULLGCOOPCLOSURES_INLINE_HPP
106