Mercurial > hg > truffle
annotate src/share/vm/oops/oop.pcgc.inline.hpp @ 6862:8a5ea0a9ccc4
7127708: G1: change task num types from int to uint in concurrent mark
Summary: Change the type of various task num fields, parameters etc to unsigned and rename them to be more consistent with the other collectors. Code changes were also reviewed by Vitaly Davidovich.
Reviewed-by: johnc
Contributed-by: Kaushik Srenevasan <kaushik@twitter.com>
| author | johnc |
|---|---|
| date | Sat, 06 Oct 2012 01:17:44 -0700 |
| parents | da91efe96a93 |
| children | d8ce2825b193 |
| rev | line source |
|---|---|
| 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. | |
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| 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 | |
| 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 |