Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: src/share/vm/memory/memRegion.hpp
src/share/vm/memory/memRegion.hpp
- changeset 4037
- da91efe96a93
- parent 3900
- d2a62e0f25eb
- child 5103
- f9be75d21404
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| 4036:36d1d483d5d6 | 4037:da91efe96a93 |
|---|---|
| 1 /* | 1 /* |
| 2 * Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved. | 2 * Copyright (c) 2000, 2012, Oracle and/or its affiliates. All rights reserved. |
| 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | 4 * |
| 5 * This code is free software; you can redistribute it and/or modify it | 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 | 6 * under the terms of the GNU General Public License version 2 only, as |
| 7 * published by the Free Software Foundation. | 7 * published by the Free Software Foundation. |
| 34 | 34 |
| 35 // Note that MemRegions are passed by value, not by reference. | 35 // Note that MemRegions are passed by value, not by reference. |
| 36 // The intent is that they remain very small and contain no | 36 // The intent is that they remain very small and contain no |
| 37 // objects. | 37 // objects. |
| 38 | 38 |
| 39 class MetaWord; | |
| 40 | |
| 39 class MemRegion VALUE_OBJ_CLASS_SPEC { | 41 class MemRegion VALUE_OBJ_CLASS_SPEC { |
| 40 friend class VMStructs; | 42 friend class VMStructs; |
| 41 private: | 43 private: |
| 42 HeapWord* _start; | 44 HeapWord* _start; |
| 43 size_t _word_size; | 45 size_t _word_size; |
| 46 MemRegion() : _start(NULL), _word_size(0) {}; | 48 MemRegion() : _start(NULL), _word_size(0) {}; |
| 47 MemRegion(HeapWord* start, size_t word_size) : | 49 MemRegion(HeapWord* start, size_t word_size) : |
| 48 _start(start), _word_size(word_size) {}; | 50 _start(start), _word_size(word_size) {}; |
| 49 MemRegion(HeapWord* start, HeapWord* end) : | 51 MemRegion(HeapWord* start, HeapWord* end) : |
| 50 _start(start), _word_size(pointer_delta(end, start)) { | 52 _start(start), _word_size(pointer_delta(end, start)) { |
| 53 assert(end >= start, "incorrect constructor arguments"); | |
| 54 } | |
| 55 MemRegion(MetaWord* start, MetaWord* end) : | |
| 56 _start((HeapWord*)start), _word_size(pointer_delta(end, start)) { | |
| 51 assert(end >= start, "incorrect constructor arguments"); | 57 assert(end >= start, "incorrect constructor arguments"); |
| 52 } | 58 } |
| 53 | 59 |
| 54 MemRegion(const MemRegion& mr): _start(mr._start), _word_size(mr._word_size) {} | 60 MemRegion(const MemRegion& mr): _start(mr._start), _word_size(mr._word_size) {} |
| 55 | 61 |
