Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: src/share/vm/memory/metachunk.hpp
src/share/vm/memory/metachunk.hpp
- changeset 5007
- c23dbf0e8ab7
- parent 4382
- e51c9860cf66
- child 5941
- bdfbb1fb19ca
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| 4934:07a4efc5ed14 | 5007:c23dbf0e8ab7 |
|---|---|
| 39 // | | | used | | 39 // | | | used | |
| 40 // | | | | | 40 // | | | | |
| 41 // | | | | | 41 // | | | | |
| 42 // +--------------+ <- bottom ---+ ---+ | 42 // +--------------+ <- bottom ---+ ---+ |
| 43 | 43 |
| 44 class VirtualSpaceNode; | |
| 45 | |
| 44 class Metachunk VALUE_OBJ_CLASS_SPEC { | 46 class Metachunk VALUE_OBJ_CLASS_SPEC { |
| 45 // link to support lists of chunks | 47 // link to support lists of chunks |
| 46 Metachunk* _next; | 48 Metachunk* _next; |
| 47 Metachunk* _prev; | 49 Metachunk* _prev; |
| 50 VirtualSpaceNode* _container; | |
| 48 | 51 |
| 49 MetaWord* _bottom; | 52 MetaWord* _bottom; |
| 50 MetaWord* _end; | 53 MetaWord* _end; |
| 51 MetaWord* _top; | 54 MetaWord* _top; |
| 52 size_t _word_size; | 55 size_t _word_size; |
| 59 // considerations). Metadata is allocated in the rest of the chunk. | 62 // considerations). Metadata is allocated in the rest of the chunk. |
| 60 // This size is the overhead of maintaining the Metachunk within | 63 // This size is the overhead of maintaining the Metachunk within |
| 61 // the space. | 64 // the space. |
| 62 static size_t _overhead; | 65 static size_t _overhead; |
| 63 | 66 |
| 64 void set_bottom(MetaWord* v) { _bottom = v; } | |
| 65 void set_end(MetaWord* v) { _end = v; } | |
| 66 void set_top(MetaWord* v) { _top = v; } | |
| 67 void set_word_size(size_t v) { _word_size = v; } | |
| 68 public: | 67 public: |
| 69 #ifdef ASSERT | 68 Metachunk(size_t word_size , VirtualSpaceNode* container); |
| 70 Metachunk() : _bottom(NULL), _end(NULL), _top(NULL), _is_free(false), | |
| 71 _next(NULL), _prev(NULL) {} | |
| 72 #else | |
| 73 Metachunk() : _bottom(NULL), _end(NULL), _top(NULL), | |
| 74 _next(NULL), _prev(NULL) {} | |
| 75 #endif | |
| 76 | 69 |
| 77 // Used to add a Metachunk to a list of Metachunks | 70 // Used to add a Metachunk to a list of Metachunks |
| 78 void set_next(Metachunk* v) { _next = v; assert(v != this, "Boom");} | 71 void set_next(Metachunk* v) { _next = v; assert(v != this, "Boom");} |
| 79 void set_prev(Metachunk* v) { _prev = v; assert(v != this, "Boom");} | 72 void set_prev(Metachunk* v) { _prev = v; assert(v != this, "Boom");} |
| 73 void set_container(VirtualSpaceNode* v) { _container = v; } | |
| 80 | 74 |
| 81 MetaWord* allocate(size_t word_size); | 75 MetaWord* allocate(size_t word_size); |
| 82 static Metachunk* initialize(MetaWord* ptr, size_t word_size); | |
| 83 | 76 |
| 84 // Accessors | 77 // Accessors |
| 85 Metachunk* next() const { return _next; } | 78 Metachunk* next() const { return _next; } |
| 86 Metachunk* prev() const { return _prev; } | 79 Metachunk* prev() const { return _prev; } |
| 80 VirtualSpaceNode* container() const { return _container; } | |
| 87 MetaWord* bottom() const { return _bottom; } | 81 MetaWord* bottom() const { return _bottom; } |
| 88 MetaWord* end() const { return _end; } | 82 MetaWord* end() const { return _end; } |
| 89 MetaWord* top() const { return _top; } | 83 MetaWord* top() const { return _top; } |
| 90 size_t word_size() const { return _word_size; } | 84 size_t word_size() const { return _word_size; } |
| 91 size_t size() const volatile { return _word_size; } | 85 size_t size() const volatile { return _word_size; } |
