Mercurial > hg > graal-compiler
annotate src/share/vm/oops/oop.pcgc.inline.hpp @ 6781:b711844284e2
7200092: Make NMT a bit friendlier to work with
Reviewed-by: kvn, ysr, azeemj
author | nloodin |
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date | Fri, 21 Sep 2012 10:56:28 +0200 |
parents | da91efe96a93 |
children | d8ce2825b193 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 2005, 2012, Oracle and/or its affiliates. All rights reserved. |
0 | 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 | |
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7 * published by the Free Software Foundation. | |
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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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #ifndef SHARE_VM_OOPS_OOP_PCGC_INLINE_HPP |
26 #define SHARE_VM_OOPS_OOP_PCGC_INLINE_HPP | |
27 | |
28 #ifndef SERIALGC | |
29 #include "gc_implementation/parNew/parNewGeneration.hpp" | |
30 #include "gc_implementation/parallelScavenge/parallelScavengeHeap.hpp" | |
31 #include "gc_implementation/parallelScavenge/psCompactionManager.hpp" | |
32 #include "gc_implementation/parallelScavenge/psParallelCompact.hpp" | |
33 #include "gc_implementation/parallelScavenge/psScavenge.hpp" | |
34 #include "gc_implementation/parallelScavenge/psScavenge.inline.hpp" | |
35 #endif | |
36 | |
0 | 37 inline void oopDesc::update_contents(ParCompactionManager* cm) { |
38 // The klass field must be updated before anything else | |
39 // can be done. | |
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40 DEBUG_ONLY(Klass* original_klass = klass()); |
0 | 41 |
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42 Klass* new_klass = klass(); |
0 | 43 if (!new_klass->oop_is_typeArray()) { |
44 // It might contain oops beyond the header, so take the virtual call. | |
45 new_klass->oop_update_pointers(cm, this); | |
46 } | |
47 // Else skip it. The typeArrayKlass in the header never needs scavenging. | |
48 } | |
49 | |
50 inline void oopDesc::follow_contents(ParCompactionManager* cm) { | |
51 assert (PSParallelCompact::mark_bitmap()->is_marked(this), | |
52 "should be marked"); | |
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53 klass()->oop_follow_contents(cm, this); |
0 | 54 } |
55 | |
56 // Used by parallel old GC. | |
57 | |
58 inline oop oopDesc::forward_to_atomic(oop p) { | |
59 assert(ParNewGeneration::is_legal_forward_ptr(p), | |
60 "illegal forwarding pointer value."); | |
61 markOop oldMark = mark(); | |
62 markOop forwardPtrMark = markOopDesc::encode_pointer_as_mark(p); | |
63 markOop curMark; | |
64 | |
65 assert(forwardPtrMark->decode_pointer() == p, "encoding must be reversable"); | |
66 assert(sizeof(markOop) == sizeof(intptr_t), "CAS below requires this."); | |
67 | |
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68 while (!oldMark->is_marked()) { |
0 | 69 curMark = (markOop)Atomic::cmpxchg_ptr(forwardPtrMark, &_mark, oldMark); |
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70 assert(is_forwarded(), "object should have been forwarded"); |
0 | 71 if (curMark == oldMark) { |
72 return NULL; | |
73 } | |
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74 // If the CAS was unsuccessful then curMark->is_marked() |
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75 // should return true as another thread has CAS'd in another |
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76 // forwarding pointer. |
0 | 77 oldMark = curMark; |
78 } | |
79 return forwardee(); | |
80 } | |
81 | |
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82 inline void oopDesc::update_header(ParCompactionManager* cm) { |
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83 PSParallelCompact::adjust_klass(cm, klass()); |
0 | 84 } |
85 | |
1972 | 86 #endif // SHARE_VM_OOPS_OOP_PCGC_INLINE_HPP |