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8294057: Parallel: Tighten ParallelCompactData::initialize_region_data

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Reviewed-by: tschatzl, sjohanss
This commit is contained in:
Albert Mingkun Yang 2022-09-28 08:27:35 +00:00
parent 1ea0d6b424
commit 94e14da0ef
1 changed files with 4 additions and 3 deletions
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7
src/hotspot/share/gc/parallel/psParallelCompact.cpp
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@ -432,8 +432,6 @@ bool ParallelCompactData::initialize(MemRegion covered_region)
assert(region_align_down(_region_start) == _region_start,
"region start not aligned");
assert((region_size & RegionSizeOffsetMask) == 0,
"region size not a multiple of RegionSize");
bool result = initialize_region_data(region_size) && initialize_block_data();
return result;
@ -470,7 +468,10 @@ ParallelCompactData::create_vspace(size_t count, size_t element_size)
bool ParallelCompactData::initialize_region_data(size_t region_size)
{
const size_t count = (region_size + RegionSizeOffsetMask) >> Log2RegionSize;
assert((region_size & RegionSizeOffsetMask) == 0,
"region size not a multiple of RegionSize");
const size_t count = region_size >> Log2RegionSize;
_region_vspace = create_vspace(count, sizeof(RegionData));
if (_region_vspace != 0) {
_region_data = (RegionData*)_region_vspace->reserved_low_addr();