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8274738: ZGC: Use relaxed atomic load when reading bits in the live map

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Reviewed-by: stefank, eosterlund
This commit is contained in:
Per Liden 2021-10-06 07:44:47 +00:00
parent 8a4d2b4aa7
commit 2faced09ce
1 changed files with 3 additions and 3 deletions
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6
src/hotspot/share/gc/z/zLiveMap.inline.hpp
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@ -98,9 +98,9 @@ inline BitMap::idx_t ZLiveMap::index_to_segment(BitMap::idx_t index) const {
inline bool ZLiveMap::get(size_t index) const {
BitMap::idx_t segment = index_to_segment(index);
return is_marked() && // Page is marked
is_segment_live(segment) && // Segment is marked
_bitmap.at(index); // Object is marked
return is_marked() && // Page is marked
is_segment_live(segment) && // Segment is marked
_bitmap.par_at(index, memory_order_relaxed); // Object is marked
}
inline bool ZLiveMap::set(size_t index, bool finalizable, bool& inc_live) {