1 /*
2 * Copyright (c) 2017, 2020, 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_G1FULLGCOOPCLOSURES_INLINE_HPP
26 #define SHARE_GC_G1_G1FULLGCOOPCLOSURES_INLINE_HPP
27
28 #include "gc/g1/g1FullGCOopClosures.hpp"
29
30 #include "gc/g1/g1Allocator.inline.hpp"
31 #include "gc/g1/g1FullCollector.inline.hpp"
32 #include "gc/g1/g1ConcurrentMarkBitMap.inline.hpp"
33 #include "gc/g1/g1FullGCMarker.inline.hpp"
34 #include "gc/g1/heapRegionRemSet.hpp"
35 #include "memory/iterator.inline.hpp"
36 #include "memory/universe.hpp"
37 #include "oops/access.inline.hpp"
38 #include "oops/compressedOops.inline.hpp"
39 #include "oops/oop.inline.hpp"
40
41 template <typename T>
42 inline void G1MarkAndPushClosure::do_oop_work(T* p) {
43 _marker->mark_and_push(p);
44 }
45
46 inline void G1MarkAndPushClosure::do_oop(oop* p) {
47 do_oop_work(p);
48 }
49
50 inline void G1MarkAndPushClosure::do_oop(narrowOop* p) {
51 do_oop_work(p);
52 }
53
54 inline bool G1MarkAndPushClosure::do_metadata() {
55 return true;
56 }
57
58 inline void G1MarkAndPushClosure::do_klass(Klass* k) {
59 _marker->follow_klass(k);
60 }
61
62 inline void G1MarkAndPushClosure::do_cld(ClassLoaderData* cld) {
63 _marker->follow_cld(cld);
64 }
65
66 template <class T> inline void G1AdjustClosure::adjust_pointer(T* p) {
67 T heap_oop = RawAccess<>::oop_load(p);
68 if (CompressedOops::is_null(heap_oop)) {
69 return;
70 }
71
72 oop obj = CompressedOops::decode_not_null(heap_oop);
73 assert(Universe::heap()->is_in(obj), "should be in heap");
74 if (!_collector->is_compacting(obj)) {
75 // We never forward objects in non-compacting regions so there is no need to
76 // process them further.
77 return;
78 }
79
80 oop forwardee = obj->forwardee();
81 if (forwardee == NULL) {
82 // Not forwarded, return current reference.
83 assert(obj->mark() == markWord::prototype_for_klass(obj->klass()) || // Correct mark
84 obj->mark_must_be_preserved() || // Will be restored by PreservedMarksSet
85 (UseBiasedLocking && obj->has_bias_pattern()), // Will be restored by BiasedLocking
86 "Must have correct prototype or be preserved, obj: " PTR_FORMAT ", mark: " PTR_FORMAT ", prototype: " PTR_FORMAT,
87 p2i(obj), obj->mark().value(), markWord::prototype_for_klass(obj->klass()).value());
88 return;
89 }
90
91 // Forwarded, just update.
92 assert(G1CollectedHeap::heap()->is_in_reserved(forwardee), "should be in object space");
93 RawAccess<IS_NOT_NULL>::oop_store(p, forwardee);
94 }
95
96 inline void G1AdjustClosure::do_oop(oop* p) { do_oop_work(p); }
97 inline void G1AdjustClosure::do_oop(narrowOop* p) { do_oop_work(p); }
98
99 inline bool G1IsAliveClosure::do_object_b(oop p) {
100 return _bitmap->is_marked(p) || _collector->is_skip_marking(p);
101 }
102
103 template<typename T>
104 inline void G1FullKeepAliveClosure::do_oop_work(T* p) {
105 _marker->mark_and_push(p);
106 }
107
108 #endif // SHARE_GC_G1_G1FULLGCOOPCLOSURES_INLINE_HPP