Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: src/share/vm/memory/cardTableRS.cpp
src/share/vm/memory/cardTableRS.cpp
- changeset 7535
- 7ae4e26cb1e0
- parent 7074
- 833b0f92429a
- parent 6876
- 710a3c8b516e
- child 8019
- 3fb3ceb7398f
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| 7534:e6aa4a8c1b46 | 7535:7ae4e26cb1e0 |
|---|---|
| 250 // prev-younger-gen ==> cur_youngergen_and_prev_nonclean_card | 250 // prev-younger-gen ==> cur_youngergen_and_prev_nonclean_card |
| 251 // cur-younger-gen ==> cur_younger_gen | 251 // cur-younger-gen ==> cur_younger_gen |
| 252 // cur_youngergen_and_prev_nonclean_card ==> no change. | 252 // cur_youngergen_and_prev_nonclean_card ==> no change. |
| 253 void CardTableRS::write_ref_field_gc_par(void* field, oop new_val) { | 253 void CardTableRS::write_ref_field_gc_par(void* field, oop new_val) { |
| 254 jbyte* entry = ct_bs()->byte_for(field); | 254 jbyte* entry = ct_bs()->byte_for(field); |
| 255 #ifdef MIPS64 | |
| 256 if (Use3A2000) OrderAccess::fence(); | |
| 257 #endif | |
| 255 do { | 258 do { |
| 256 jbyte entry_val = *entry; | 259 jbyte entry_val = *entry; |
| 257 // We put this first because it's probably the most common case. | 260 // We put this first because it's probably the most common case. |
| 258 if (entry_val == clean_card_val()) { | 261 if (entry_val == clean_card_val()) { |
| 259 // No threat of contention with cleaning threads. | 262 // No threat of contention with cleaning threads. |
| 264 // Mark it as both cur and prev youngergen; card cleaning thread will | 267 // Mark it as both cur and prev youngergen; card cleaning thread will |
| 265 // eventually remove the previous stuff. | 268 // eventually remove the previous stuff. |
| 266 jbyte new_val = cur_youngergen_and_prev_nonclean_card; | 269 jbyte new_val = cur_youngergen_and_prev_nonclean_card; |
| 267 jbyte res = Atomic::cmpxchg(new_val, entry, entry_val); | 270 jbyte res = Atomic::cmpxchg(new_val, entry, entry_val); |
| 268 // Did the CAS succeed? | 271 // Did the CAS succeed? |
| 269 if (res == entry_val) return; | 272 if (res == entry_val) { |
| 273 #ifdef MIPS64 | |
| 274 if (Use3A2000) OrderAccess::fence(); | |
| 275 #endif | |
| 276 return; | |
| 277 } | |
| 270 // Otherwise, retry, to see the new value. | 278 // Otherwise, retry, to see the new value. |
| 271 continue; | 279 continue; |
| 272 } else { | 280 } else { |
| 273 assert(entry_val == cur_youngergen_and_prev_nonclean_card | 281 assert(entry_val == cur_youngergen_and_prev_nonclean_card |
| 274 || entry_val == cur_youngergen_card_val(), | 282 || entry_val == cur_youngergen_card_val(), |
