1 /*
2 * Copyright (c) 2017, 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_VM_GC_G1_G1MARKSTACK_INLINE_HPP
26 #define SHARE_VM_GC_G1_G1MARKSTACK_INLINE_HPP
27
28 #include "gc/g1/g1Allocator.inline.hpp"
29 #include "gc/g1/g1ConcurrentMarkBitMap.inline.hpp"
30 #include "gc/g1/g1FullGCMarker.hpp"
31 #include "gc/g1/g1StringDedup.hpp"
32 #include "gc/g1/g1StringDedupQueue.hpp"
33 #include "gc/shared/preservedMarks.inline.hpp"
34 #include "utilities/debug.hpp"
35
36 inline bool G1FullGCMarker::mark_object(oop obj) {
37 // Not marking closed archive objects.
38 if (G1ArchiveAllocator::is_closed_archive_object(obj)) {
39 return false;
40 }
41
42 // Try to mark.
43 if (!_bitmap->par_mark(obj)) {
44 // Lost mark race.
45 return false;
46 }
47
48 // Marked by us, preserve if needed.
49 markOop mark = obj->mark();
50 if (mark->must_be_preserved(obj) &&
51 !G1ArchiveAllocator::is_open_archive_object(obj)) {
52 preserved_stack()->push(obj, mark);
53 }
54
55 // Check if deduplicatable string.
56 if (G1StringDedup::is_enabled()) {
57 G1StringDedup::enqueue_from_mark(obj, _worker_id);
58 }
59 return true;
60 }
61
62 template <class T> inline void G1FullGCMarker::mark_and_push(T* p) {
63 T heap_oop = oopDesc::load_heap_oop(p);
64 if (!oopDesc::is_null(heap_oop)) {
65 oop obj = oopDesc::decode_heap_oop_not_null(heap_oop);
66 if (mark_object(obj)) {
67 _oop_stack.push(obj);
68 assert(_bitmap->is_marked(obj), "Must be marked now - map self");
69 } else {
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1 /*
2 * Copyright (c) 2017, 2018 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_VM_GC_G1_G1MARKSTACK_INLINE_HPP
26 #define SHARE_VM_GC_G1_G1MARKSTACK_INLINE_HPP
27
28 #include "gc/g1/g1Allocator.inline.hpp"
29 #include "gc/g1/g1ConcurrentMarkBitMap.inline.hpp"
30 #include "gc/g1/g1FullGCMarker.hpp"
31 #include "gc/g1/g1StringDedup.hpp"
32 #include "gc/g1/g1StringDedupQueue.hpp"
33 #include "gc/shared/preservedMarks.inline.hpp"
34 #include "oops/oop.inline.hpp"
35 #include "utilities/debug.hpp"
36
37 inline bool G1FullGCMarker::mark_object(oop obj) {
38 // Not marking closed archive objects.
39 if (G1ArchiveAllocator::is_closed_archive_object(obj)) {
40 return false;
41 }
42
43 // Try to mark.
44 if (!_bitmap->par_mark(obj)) {
45 // Lost mark race.
46 return false;
47 }
48
49 // Marked by us, preserve if needed.
50 markOop mark = obj->mark_raw();
51 if (mark->must_be_preserved(obj) &&
52 !G1ArchiveAllocator::is_open_archive_object(obj)) {
53 preserved_stack()->push(obj, mark);
54 }
55
56 // Check if deduplicatable string.
57 if (G1StringDedup::is_enabled()) {
58 G1StringDedup::enqueue_from_mark(obj, _worker_id);
59 }
60 return true;
61 }
62
63 template <class T> inline void G1FullGCMarker::mark_and_push(T* p) {
64 T heap_oop = oopDesc::load_heap_oop(p);
65 if (!oopDesc::is_null(heap_oop)) {
66 oop obj = oopDesc::decode_heap_oop_not_null(heap_oop);
67 if (mark_object(obj)) {
68 _oop_stack.push(obj);
69 assert(_bitmap->is_marked(obj), "Must be marked now - map self");
70 } else {
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