Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: src/share/vm/memory/memRegion.hpp
src/share/vm/memory/memRegion.hpp
- changeset 5249
- ce9ecec70f99
- parent 5103
- f9be75d21404
- child 5614
- 9758d9f36299
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| 5248:cb92413c6934 | 5249:ce9ecec70f99 |
|---|---|
| 32 // A very simple data structure representing a contigous region | 32 // A very simple data structure representing a contigous region |
| 33 // region of address space. | 33 // region of address space. |
| 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. _ValueObj should never be allocated in heap but we do |
| 38 // create MemRegions (in CardTableModRefBS) in heap so operator | |
| 39 // new and operator new [] added for this special case. | |
| 38 | 40 |
| 39 class MetaWord; | 41 class MetaWord; |
| 40 | 42 |
| 41 class MemRegion VALUE_OBJ_CLASS_SPEC { | 43 class MemRegion VALUE_OBJ_CLASS_SPEC { |
| 42 friend class VMStructs; | 44 friend class VMStructs; |
| 90 | 92 |
| 91 size_t byte_size() const { return _word_size * sizeof(HeapWord); } | 93 size_t byte_size() const { return _word_size * sizeof(HeapWord); } |
| 92 size_t word_size() const { return _word_size; } | 94 size_t word_size() const { return _word_size; } |
| 93 | 95 |
| 94 bool is_empty() const { return word_size() == 0; } | 96 bool is_empty() const { return word_size() == 0; } |
| 97 void* operator new(size_t size); | |
| 98 void* operator new [](size_t size); | |
| 99 void operator delete(void* p); | |
| 100 void operator delete [](void* p); | |
| 95 }; | 101 }; |
| 96 | 102 |
| 97 // For iteration over MemRegion's. | 103 // For iteration over MemRegion's. |
| 98 | 104 |
| 99 class MemRegionClosure : public StackObj { | 105 class MemRegionClosure : public StackObj { |
