Mercurial > hg > truffle
annotate src/share/vm/oops/oop.pcgc.inline.hpp @ 2227:e5383553fd4e
7014851: Remove unused parallel compaction code
Summary: Removed.
Reviewed-by: jcoomes, brutisso
| author | stefank |
|---|---|
| date | Tue, 08 Feb 2011 12:33:19 +0100 |
| parents | 3cd116fd11be |
| children | da91efe96a93 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2227 | 2 * Copyright (c) 2005, 2011, 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 | |
| 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. | |
| 40 DEBUG_ONLY(klassOopDesc* original_klass = klass()); | |
| 41 | |
| 42 // Can the option to update and/or copy be moved up in the | |
| 43 // call chain to avoid calling into here? | |
| 44 | |
| 45 if (PSParallelCompact::should_update_klass(klass())) { | |
| 46 update_header(); | |
| 47 assert(klass()->is_klass(), "Not updated correctly"); | |
| 48 } else { | |
| 49 assert(klass()->is_klass(), "Not updated"); | |
| 50 } | |
| 51 | |
| 52 Klass* new_klass = blueprint(); | |
| 53 if (!new_klass->oop_is_typeArray()) { | |
| 54 // It might contain oops beyond the header, so take the virtual call. | |
| 55 new_klass->oop_update_pointers(cm, this); | |
| 56 } | |
| 57 // Else skip it. The typeArrayKlass in the header never needs scavenging. | |
| 58 } | |
| 59 | |
| 60 inline void oopDesc::follow_contents(ParCompactionManager* cm) { | |
| 61 assert (PSParallelCompact::mark_bitmap()->is_marked(this), | |
| 62 "should be marked"); | |
| 63 blueprint()->oop_follow_contents(cm, this); | |
| 64 } | |
| 65 | |
| 66 // Used by parallel old GC. | |
| 67 | |
| 68 inline void oopDesc::follow_header(ParCompactionManager* cm) { | |
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69 if (UseCompressedOops) { |
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70 PSParallelCompact::mark_and_push(cm, compressed_klass_addr()); |
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71 } else { |
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72 PSParallelCompact::mark_and_push(cm, klass_addr()); |
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73 } |
| 0 | 74 } |
| 75 | |
| 76 inline oop oopDesc::forward_to_atomic(oop p) { | |
| 77 assert(ParNewGeneration::is_legal_forward_ptr(p), | |
| 78 "illegal forwarding pointer value."); | |
| 79 markOop oldMark = mark(); | |
| 80 markOop forwardPtrMark = markOopDesc::encode_pointer_as_mark(p); | |
| 81 markOop curMark; | |
| 82 | |
| 83 assert(forwardPtrMark->decode_pointer() == p, "encoding must be reversable"); | |
| 84 assert(sizeof(markOop) == sizeof(intptr_t), "CAS below requires this."); | |
| 85 | |
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86 while (!oldMark->is_marked()) { |
| 0 | 87 curMark = (markOop)Atomic::cmpxchg_ptr(forwardPtrMark, &_mark, oldMark); |
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88 assert(is_forwarded(), "object should have been forwarded"); |
| 0 | 89 if (curMark == oldMark) { |
| 90 return NULL; | |
| 91 } | |
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92 // If the CAS was unsuccessful then curMark->is_marked() |
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93 // should return true as another thread has CAS'd in another |
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94 // forwarding pointer. |
| 0 | 95 oldMark = curMark; |
| 96 } | |
| 97 return forwardee(); | |
| 98 } | |
| 99 | |
| 100 inline void oopDesc::update_header() { | |
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101 if (UseCompressedOops) { |
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102 PSParallelCompact::adjust_pointer(compressed_klass_addr()); |
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103 } else { |
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104 PSParallelCompact::adjust_pointer(klass_addr()); |
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105 } |
| 0 | 106 } |
| 107 | |
| 1972 | 108 #endif // SHARE_VM_OOPS_OOP_PCGC_INLINE_HPP |