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This commit is contained in:
Vladimir Kozlov 2014-02-20 12:20:56 -08:00
commit 4200d0d095
358 changed files with 58894 additions and 1801 deletions
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6
hotspot/src/share/vm/oops/instanceKlass.cpp
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@ -1157,7 +1157,11 @@ void InstanceKlass::mask_for(methodHandle method, int bci,
MutexLocker x(OopMapCacheAlloc_lock);
// First time use. Allocate a cache in C heap
if (_oop_map_cache == NULL) {
_oop_map_cache = new OopMapCache();
// Release stores from OopMapCache constructor before assignment
// to _oop_map_cache. C++ compilers on ppc do not emit the
// required memory barrier only because of the volatile
// qualifier of _oop_map_cache.
OrderAccess::release_store_ptr(&_oop_map_cache, new OopMapCache());
}
}
// _oop_map_cache is constant after init; lookup below does is own locking.