Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: src/share/vm/gc_implementation/g1/heapRegionRemSet.hpp
src/share/vm/gc_implementation/g1/heapRegionRemSet.hpp
- changeset 2974
- e8b0b0392037
- parent 2493
- 97ba643ea3ed
- child 3182
- 65a8ff39a6da
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| 2973:23d434c6290d | 2974:e8b0b0392037 |
|---|---|
| 260 | 260 |
| 261 #if 0 | 261 #if 0 |
| 262 virtual void cleanup() = 0; | 262 virtual void cleanup() = 0; |
| 263 #endif | 263 #endif |
| 264 | 264 |
| 265 // Should be called from single-threaded code. | |
| 266 void init_for_par_iteration(); | |
| 267 // Attempt to claim the region. Returns true iff this call caused an | 265 // Attempt to claim the region. Returns true iff this call caused an |
| 268 // atomic transition from Unclaimed to Claimed. | 266 // atomic transition from Unclaimed to Claimed. |
| 269 bool claim_iter(); | 267 bool claim_iter(); |
| 270 // Sets the iteration state to "complete". | 268 // Sets the iteration state to "complete". |
| 271 void set_iter_complete(); | 269 void set_iter_complete(); |
| 272 // Returns "true" iff the region's iteration is complete. | 270 // Returns "true" iff the region's iteration is complete. |
| 273 bool iter_is_complete(); | 271 bool iter_is_complete(); |
| 274 | 272 |
| 275 // Support for claiming blocks of cards during iteration | 273 // Support for claiming blocks of cards during iteration |
| 276 void set_iter_claimed(size_t x) { _iter_claimed = (jlong)x; } | |
| 277 size_t iter_claimed() const { return (size_t)_iter_claimed; } | 274 size_t iter_claimed() const { return (size_t)_iter_claimed; } |
| 278 // Claim the next block of cards | 275 // Claim the next block of cards |
| 279 size_t iter_claimed_next(size_t step) { | 276 size_t iter_claimed_next(size_t step) { |
| 280 size_t current, next; | 277 size_t current, next; |
| 281 do { | 278 do { |
| 282 current = iter_claimed(); | 279 current = iter_claimed(); |
| 283 next = current + step; | 280 next = current + step; |
| 284 } while (Atomic::cmpxchg((jlong)next, &_iter_claimed, (jlong)current) != (jlong)current); | 281 } while (Atomic::cmpxchg((jlong)next, &_iter_claimed, (jlong)current) != (jlong)current); |
| 285 return current; | 282 return current; |
| 286 } | 283 } |
| 284 void reset_for_par_iteration(); | |
| 285 | |
| 286 bool verify_ready_for_par_iteration() { | |
| 287 return (_iter_state == Unclaimed) && (_iter_claimed == 0); | |
| 288 } | |
| 287 | 289 |
| 288 // Initialize the given iterator to iterate over this rem set. | 290 // Initialize the given iterator to iterate over this rem set. |
| 289 void init_iterator(HeapRegionRemSetIterator* iter) const; | 291 void init_iterator(HeapRegionRemSetIterator* iter) const; |
| 290 | 292 |
| 291 #if 0 | 293 #if 0 |
