Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: src/share/vm/gc_implementation/g1/heapRegion.hpp
src/share/vm/gc_implementation/g1/heapRegion.hpp
- changeset 7091
- a8ea2f110d87
- parent 7050
- 6701abbc4441
- child 7100
- edb5f3b38aab
equal
deleted
inserted
replaced
| 7073:4d3a43351904 | 7091:a8ea2f110d87 |
|---|---|
| 52 class HeapRegionSetBase; | 52 class HeapRegionSetBase; |
| 53 class nmethod; | 53 class nmethod; |
| 54 | 54 |
| 55 #define HR_FORMAT "%u:(%s)["PTR_FORMAT","PTR_FORMAT","PTR_FORMAT"]" | 55 #define HR_FORMAT "%u:(%s)["PTR_FORMAT","PTR_FORMAT","PTR_FORMAT"]" |
| 56 #define HR_FORMAT_PARAMS(_hr_) \ | 56 #define HR_FORMAT_PARAMS(_hr_) \ |
| 57 (_hr_)->hrs_index(), \ | 57 (_hr_)->hrm_index(), \ |
| 58 (_hr_)->is_survivor() ? "S" : (_hr_)->is_young() ? "E" : \ | 58 (_hr_)->is_survivor() ? "S" : (_hr_)->is_young() ? "E" : \ |
| 59 (_hr_)->startsHumongous() ? "HS" : \ | 59 (_hr_)->startsHumongous() ? "HS" : \ |
| 60 (_hr_)->continuesHumongous() ? "HC" : \ | 60 (_hr_)->continuesHumongous() ? "HC" : \ |
| 61 !(_hr_)->is_empty() ? "O" : "F", \ | 61 !(_hr_)->is_empty() ? "O" : "F", \ |
| 62 p2i((_hr_)->bottom()), p2i((_hr_)->top()), p2i((_hr_)->end()) | 62 p2i((_hr_)->bottom()), p2i((_hr_)->top()), p2i((_hr_)->end()) |
| 63 | 63 |
| 64 // sentinel value for hrs_index | 64 // sentinel value for hrm_index |
| 65 #define G1_NO_HRS_INDEX ((uint) -1) | 65 #define G1_NO_HRM_INDEX ((uint) -1) |
| 66 | 66 |
| 67 // A dirty card to oop closure for heap regions. It | 67 // A dirty card to oop closure for heap regions. It |
| 68 // knows how to get the G1 heap and how to use the bitmap | 68 // knows how to get the G1 heap and how to use the bitmap |
| 69 // in the concurrent marker used by G1 to filter remembered | 69 // in the concurrent marker used by G1 to filter remembered |
| 70 // sets. | 70 // sets. |
| 232 | 232 |
| 233 G1BlockOffsetArrayContigSpace* offsets() { return &_offsets; } | 233 G1BlockOffsetArrayContigSpace* offsets() { return &_offsets; } |
| 234 | 234 |
| 235 protected: | 235 protected: |
| 236 // The index of this region in the heap region sequence. | 236 // The index of this region in the heap region sequence. |
| 237 uint _hrs_index; | 237 uint _hrm_index; |
| 238 | 238 |
| 239 HumongousType _humongous_type; | 239 HumongousType _humongous_type; |
| 240 // For a humongous region, region in which it starts. | 240 // For a humongous region, region in which it starts. |
| 241 HeapRegion* _humongous_start_region; | 241 HeapRegion* _humongous_start_region; |
| 242 // For the start region of a humongous sequence, it's original end(). | 242 // For the start region of a humongous sequence, it's original end(). |
| 328 // The predicted number of bytes to copy that was added to | 328 // The predicted number of bytes to copy that was added to |
| 329 // the total value for the collection set. | 329 // the total value for the collection set. |
| 330 size_t _predicted_bytes_to_copy; | 330 size_t _predicted_bytes_to_copy; |
| 331 | 331 |
| 332 public: | 332 public: |
| 333 HeapRegion(uint hrs_index, | 333 HeapRegion(uint hrm_index, |
| 334 G1BlockOffsetSharedArray* sharedOffsetArray, | 334 G1BlockOffsetSharedArray* sharedOffsetArray, |
| 335 MemRegion mr); | 335 MemRegion mr); |
| 336 | 336 |
| 337 // Initializing the HeapRegion not only resets the data structure, but also | 337 // Initializing the HeapRegion not only resets the data structure, but also |
| 338 // resets the BOT for that heap region. | 338 // resets the BOT for that heap region. |
| 383 size_t block_size(const HeapWord* p) const; | 383 size_t block_size(const HeapWord* p) const; |
| 384 | 384 |
| 385 inline HeapWord* par_allocate_no_bot_updates(size_t word_size); | 385 inline HeapWord* par_allocate_no_bot_updates(size_t word_size); |
| 386 inline HeapWord* allocate_no_bot_updates(size_t word_size); | 386 inline HeapWord* allocate_no_bot_updates(size_t word_size); |
| 387 | 387 |
| 388 // If this region is a member of a HeapRegionSeq, the index in that | 388 // If this region is a member of a HeapRegionManager, the index in that |
| 389 // sequence, otherwise -1. | 389 // sequence, otherwise -1. |
| 390 uint hrs_index() const { return _hrs_index; } | 390 uint hrm_index() const { return _hrm_index; } |
| 391 | 391 |
| 392 // The number of bytes marked live in the region in the last marking phase. | 392 // The number of bytes marked live in the region in the last marking phase. |
| 393 size_t marked_bytes() { return _prev_marked_bytes; } | 393 size_t marked_bytes() { return _prev_marked_bytes; } |
| 394 size_t live_bytes() { | 394 size_t live_bytes() { |
| 395 return (top() - prev_top_at_mark_start()) * HeapWordSize + marked_bytes(); | 395 return (top() - prev_top_at_mark_start()) * HeapWordSize + marked_bytes(); |
| 456 | 456 |
| 457 // Return the index + 1 of the last HC regions that's associated | 457 // Return the index + 1 of the last HC regions that's associated |
| 458 // with this HS region. | 458 // with this HS region. |
| 459 uint last_hc_index() const { | 459 uint last_hc_index() const { |
| 460 assert(startsHumongous(), "don't call this otherwise"); | 460 assert(startsHumongous(), "don't call this otherwise"); |
| 461 return hrs_index() + region_num(); | 461 return hrm_index() + region_num(); |
| 462 } | 462 } |
| 463 | 463 |
| 464 // Same as Space::is_in_reserved, but will use the original size of the region. | 464 // Same as Space::is_in_reserved, but will use the original size of the region. |
| 465 // The original size is different only for start humongous regions. They get | 465 // The original size is different only for start humongous regions. They get |
| 466 // their _end set up to be the end of the last continues region of the | 466 // their _end set up to be the end of the last continues region of the |
| 811 }; | 811 }; |
| 812 | 812 |
| 813 // HeapRegionClosure is used for iterating over regions. | 813 // HeapRegionClosure is used for iterating over regions. |
| 814 // Terminates the iteration when the "doHeapRegion" method returns "true". | 814 // Terminates the iteration when the "doHeapRegion" method returns "true". |
| 815 class HeapRegionClosure : public StackObj { | 815 class HeapRegionClosure : public StackObj { |
| 816 friend class HeapRegionSeq; | 816 friend class HeapRegionManager; |
| 817 friend class G1CollectedHeap; | 817 friend class G1CollectedHeap; |
| 818 | 818 |
| 819 bool _complete; | 819 bool _complete; |
| 820 void incomplete() { _complete = false; } | 820 void incomplete() { _complete = false; } |
| 821 | 821 |
