Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: src/share/vm/oops/instanceKlass.cpp
src/share/vm/oops/instanceKlass.cpp
- changeset 6493
- 3205e78d8193
- parent 6132
- 22eaa15b7960
- child 6497
- 2da20f966936
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| 6492:1174c8abbdb6 | 6493:3205e78d8193 |
|---|---|
| 1201 if (_oop_map_cache == NULL) { | 1201 if (_oop_map_cache == NULL) { |
| 1202 // Otherwise, allocate a new one. | 1202 // Otherwise, allocate a new one. |
| 1203 MutexLocker x(OopMapCacheAlloc_lock); | 1203 MutexLocker x(OopMapCacheAlloc_lock); |
| 1204 // First time use. Allocate a cache in C heap | 1204 // First time use. Allocate a cache in C heap |
| 1205 if (_oop_map_cache == NULL) { | 1205 if (_oop_map_cache == NULL) { |
| 1206 _oop_map_cache = new OopMapCache(); | 1206 // Release stores from OopMapCache constructor before assignment |
| 1207 // to _oop_map_cache. C++ compilers on ppc do not emit the | |
| 1208 // required memory barrier only because of the volatile | |
| 1209 // qualifier of _oop_map_cache. | |
| 1210 OrderAccess::release_store_ptr(&_oop_map_cache, new OopMapCache()); | |
| 1207 } | 1211 } |
| 1208 } | 1212 } |
| 1209 // _oop_map_cache is constant after init; lookup below does is own locking. | 1213 // _oop_map_cache is constant after init; lookup below does is own locking. |
| 1210 _oop_map_cache->lookup(method, bci, entry_for); | 1214 _oop_map_cache->lookup(method, bci, entry_for); |
| 1211 } | 1215 } |
