Mercurial > hg > truffle
annotate src/share/vm/oops/oop.pcgc.inline.hpp @ 14206:e7b58922266b
8028412: AsyncGetCallTrace() is broken on x86 in JDK 7u40
Reviewed-by: kvn, sspitsyn
author | mgronlun |
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date | Thu, 05 Dec 2013 12:35:38 +0100 |
parents | db9981fd3124 |
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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 | |
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 * | |
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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 | |
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28 #include "utilities/macros.hpp" |
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29 #if INCLUDE_ALL_GCS |
1972 | 30 #include "gc_implementation/parNew/parNewGeneration.hpp" |
31 #include "gc_implementation/parallelScavenge/parallelScavengeHeap.hpp" | |
32 #include "gc_implementation/parallelScavenge/psCompactionManager.hpp" | |
33 #include "gc_implementation/parallelScavenge/psParallelCompact.hpp" | |
34 #include "gc_implementation/parallelScavenge/psScavenge.hpp" | |
35 #include "gc_implementation/parallelScavenge/psScavenge.inline.hpp" | |
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36 #endif // INCLUDE_ALL_GCS |
1972 | 37 |
0 | 38 inline void oopDesc::update_contents(ParCompactionManager* cm) { |
39 // The klass field must be updated before anything else | |
40 // can be done. | |
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41 DEBUG_ONLY(Klass* original_klass = klass()); |
0 | 42 |
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43 Klass* new_klass = klass(); |
0 | 44 if (!new_klass->oop_is_typeArray()) { |
45 // It might contain oops beyond the header, so take the virtual call. | |
46 new_klass->oop_update_pointers(cm, this); | |
47 } | |
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48 // Else skip it. The TypeArrayKlass in the header never needs scavenging. |
0 | 49 } |
50 | |
51 inline void oopDesc::follow_contents(ParCompactionManager* cm) { | |
52 assert (PSParallelCompact::mark_bitmap()->is_marked(this), | |
53 "should be marked"); | |
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54 klass()->oop_follow_contents(cm, this); |
0 | 55 } |
56 | |
57 // Used by parallel old GC. | |
58 | |
59 inline oop oopDesc::forward_to_atomic(oop p) { | |
60 assert(ParNewGeneration::is_legal_forward_ptr(p), | |
61 "illegal forwarding pointer value."); | |
62 markOop oldMark = mark(); | |
63 markOop forwardPtrMark = markOopDesc::encode_pointer_as_mark(p); | |
64 markOop curMark; | |
65 | |
66 assert(forwardPtrMark->decode_pointer() == p, "encoding must be reversable"); | |
67 assert(sizeof(markOop) == sizeof(intptr_t), "CAS below requires this."); | |
68 | |
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69 while (!oldMark->is_marked()) { |
0 | 70 curMark = (markOop)Atomic::cmpxchg_ptr(forwardPtrMark, &_mark, oldMark); |
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71 assert(is_forwarded(), "object should have been forwarded"); |
0 | 72 if (curMark == oldMark) { |
73 return NULL; | |
74 } | |
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75 // If the CAS was unsuccessful then curMark->is_marked() |
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76 // should return true as another thread has CAS'd in another |
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77 // forwarding pointer. |
0 | 78 oldMark = curMark; |
79 } | |
80 return forwardee(); | |
81 } | |
82 | |
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83 inline void oopDesc::update_header(ParCompactionManager* cm) { |
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84 PSParallelCompact::adjust_klass(cm, klass()); |
0 | 85 } |
86 | |
1972 | 87 #endif // SHARE_VM_OOPS_OOP_PCGC_INLINE_HPP |