Mercurial > hg > graal-jvmci-8
comparison src/share/vm/gc_implementation/shared/markSweep.inline.hpp @ 0:a61af66fc99e jdk7-b24
Initial load
author | duke |
---|---|
date | Sat, 01 Dec 2007 00:00:00 +0000 |
parents | |
children | ba764ed4b6f2 |
comparison
equal
deleted
inserted
replaced
-1:000000000000 | 0:a61af66fc99e |
---|---|
1 /* | |
2 * Copyright 2000-2006 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
21 * have any questions. | |
22 * | |
23 */ | |
24 | |
25 inline void MarkSweep::_adjust_pointer(oop* p, bool isroot) { | |
26 oop obj = *p; | |
27 VALIDATE_MARK_SWEEP_ONLY(oop saved_new_pointer = NULL); | |
28 if (obj != NULL) { | |
29 oop new_pointer = oop(obj->mark()->decode_pointer()); | |
30 assert(new_pointer != NULL || // is forwarding ptr? | |
31 obj->mark() == markOopDesc::prototype() || // not gc marked? | |
32 (UseBiasedLocking && obj->mark()->has_bias_pattern()) || // not gc marked? | |
33 obj->is_shared(), // never forwarded? | |
34 "should contain a forwarding pointer"); | |
35 if (new_pointer != NULL) { | |
36 *p = new_pointer; | |
37 assert(Universe::heap()->is_in_reserved(new_pointer), | |
38 "should be in object space"); | |
39 VALIDATE_MARK_SWEEP_ONLY(saved_new_pointer = new_pointer); | |
40 } | |
41 } | |
42 VALIDATE_MARK_SWEEP_ONLY(track_adjusted_pointer(p, saved_new_pointer, isroot)); | |
43 } | |
44 | |
45 inline void MarkSweep::mark_object(oop obj) { | |
46 | |
47 #ifndef SERIALGC | |
48 if (UseParallelOldGC && VerifyParallelOldWithMarkSweep) { | |
49 assert(PSParallelCompact::mark_bitmap()->is_marked(obj), | |
50 "Should be marked in the marking bitmap"); | |
51 } | |
52 #endif // SERIALGC | |
53 | |
54 // some marks may contain information we need to preserve so we store them away | |
55 // and overwrite the mark. We'll restore it at the end of markSweep. | |
56 markOop mark = obj->mark(); | |
57 obj->set_mark(markOopDesc::prototype()->set_marked()); | |
58 | |
59 if (mark->must_be_preserved(obj)) { | |
60 preserve_mark(obj, mark); | |
61 } | |
62 } |