1 /*
2 * Copyright (c) 2000, 2008, 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 inline void MarkSweep::mark_object(oop obj) {
26 // some marks may contain information we need to preserve so we store them away
27 // and overwrite the mark. We'll restore it at the end of markSweep.
28 markOop mark = obj->mark();
29 obj->set_mark(markOopDesc::prototype()->set_marked());
30
31 if (mark->must_be_preserved(obj)) {
32 preserve_mark(obj, mark);
33 }
34 }
35
36 template <class T> inline void MarkSweep::follow_root(T* p) {
37 assert(!Universe::heap()->is_in_reserved(p),
38 "roots shouldn't be things within the heap");
39 #ifdef VALIDATE_MARK_SWEEP
40 if (ValidateMarkSweep) {
41 guarantee(!_root_refs_stack->contains(p), "should only be in here once");
42 _root_refs_stack->push(p);
43 }
44 #endif
98 assert(Universe::heap()->is_in_reserved(new_obj),
99 "should be in object space");
100 oopDesc::encode_store_heap_oop_not_null(p, new_obj);
101 }
102 }
103 VALIDATE_MARK_SWEEP_ONLY(track_adjusted_pointer(p, isroot));
104 }
105
106 template <class T> inline void MarkSweep::KeepAliveClosure::do_oop_work(T* p) {
107 #ifdef VALIDATE_MARK_SWEEP
108 if (ValidateMarkSweep) {
109 if (!Universe::heap()->is_in_reserved(p)) {
110 _root_refs_stack->push(p);
111 } else {
112 _other_refs_stack->push(p);
113 }
114 }
115 #endif
116 mark_and_push(p);
117 }
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1 /*
2 * Copyright (c) 2000, 2010, 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_IMPLEMENTATION_SHARED_MARKSWEEP_INLINE_HPP
26 #define SHARE_VM_GC_IMPLEMENTATION_SHARED_MARKSWEEP_INLINE_HPP
27
28 #include "gc_implementation/shared/markSweep.hpp"
29 #include "gc_interface/collectedHeap.hpp"
30 #ifndef SERIALGC
31 #include "gc_implementation/parallelScavenge/psParallelCompact.hpp"
32 #endif
33
34 inline void MarkSweep::mark_object(oop obj) {
35 // some marks may contain information we need to preserve so we store them away
36 // and overwrite the mark. We'll restore it at the end of markSweep.
37 markOop mark = obj->mark();
38 obj->set_mark(markOopDesc::prototype()->set_marked());
39
40 if (mark->must_be_preserved(obj)) {
41 preserve_mark(obj, mark);
42 }
43 }
44
45 template <class T> inline void MarkSweep::follow_root(T* p) {
46 assert(!Universe::heap()->is_in_reserved(p),
47 "roots shouldn't be things within the heap");
48 #ifdef VALIDATE_MARK_SWEEP
49 if (ValidateMarkSweep) {
50 guarantee(!_root_refs_stack->contains(p), "should only be in here once");
51 _root_refs_stack->push(p);
52 }
53 #endif
107 assert(Universe::heap()->is_in_reserved(new_obj),
108 "should be in object space");
109 oopDesc::encode_store_heap_oop_not_null(p, new_obj);
110 }
111 }
112 VALIDATE_MARK_SWEEP_ONLY(track_adjusted_pointer(p, isroot));
113 }
114
115 template <class T> inline void MarkSweep::KeepAliveClosure::do_oop_work(T* p) {
116 #ifdef VALIDATE_MARK_SWEEP
117 if (ValidateMarkSweep) {
118 if (!Universe::heap()->is_in_reserved(p)) {
119 _root_refs_stack->push(p);
120 } else {
121 _other_refs_stack->push(p);
122 }
123 }
124 #endif
125 mark_and_push(p);
126 }
127
128 #endif // SHARE_VM_GC_IMPLEMENTATION_SHARED_MARKSWEEP_INLINE_HPP
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