Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: src/share/vm/gc_implementation/concurrentMarkSweep/compactibleFreeListSpace.hpp
src/share/vm/gc_implementation/concurrentMarkSweep/compactibleFreeListSpace.hpp
- changeset 9793
- 7386b3a385ac
- parent 7476
- c2844108a708
- child 9806
- 758c07667682
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| 9792:9a7135d0a309 | 9793:7386b3a385ac |
|---|---|
| 145 // in an effort to maintain a large chunk at the end of the heap. | 145 // in an effort to maintain a large chunk at the end of the heap. |
| 146 HeapWord* _nearLargestChunk; | 146 HeapWord* _nearLargestChunk; |
| 147 | 147 |
| 148 // Used to keep track of limit of sweep for the space | 148 // Used to keep track of limit of sweep for the space |
| 149 HeapWord* _sweep_limit; | 149 HeapWord* _sweep_limit; |
| 150 | |
| 151 // Stable value of used(). | |
| 152 size_t _used_stable; | |
| 150 | 153 |
| 151 // Support for compacting cms | 154 // Support for compacting cms |
| 152 HeapWord* cross_threshold(HeapWord* start, HeapWord* end); | 155 HeapWord* cross_threshold(HeapWord* start, HeapWord* end); |
| 153 HeapWord* forward(oop q, size_t size, CompactPoint* cp, HeapWord* compact_top); | 156 HeapWord* forward(oop q, size_t size, CompactPoint* cp, HeapWord* compact_top); |
| 154 | 157 |
| 341 // try to bump down the address and the allocator will try to bump it up. | 344 // try to bump down the address and the allocator will try to bump it up. |
| 342 // For now, however, we'll just use the default used_region() | 345 // For now, however, we'll just use the default used_region() |
| 343 // which overestimates the region by returning the entire | 346 // which overestimates the region by returning the entire |
| 344 // committed region (this is safe, but inefficient). | 347 // committed region (this is safe, but inefficient). |
| 345 | 348 |
| 349 // Returns monotonically increasing stable used space bytes for CMS. | |
| 350 // This is required for jstat and other memory monitoring tools | |
| 351 // that might otherwise see inconsistent used space values during a garbage | |
| 352 // collection, promotion or allocation into compactibleFreeListSpace. | |
| 353 // The value returned by this function might be smaller than the | |
| 354 // actual value. | |
| 355 size_t used_stable() const; | |
| 356 // Recalculate and cache the current stable used() value. Only to be called | |
| 357 // in places where we can be sure that the result is stable. | |
| 358 void recalculate_used_stable(); | |
| 359 | |
| 346 // Returns a subregion of the space containing all the objects in | 360 // Returns a subregion of the space containing all the objects in |
| 347 // the space. | 361 // the space. |
| 348 MemRegion used_region() const { | 362 MemRegion used_region() const { |
| 349 return MemRegion(bottom(), | 363 return MemRegion(bottom(), |
| 350 BlockOffsetArrayUseUnallocatedBlock ? | 364 BlockOffsetArrayUseUnallocatedBlock ? |
