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8152160: SIGFPE in CompactibleFreeListSpaceLAB::compute_desired_plab_size

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Rephrase the calculation with CMSOldPLABNumRefills to avoid an overflow

Reviewed-by: pliden, jmasa
This commit is contained in:
Sangheon Kim 2016-03-24 23:07:06 -07:00
parent d7e8dc2fef
commit d676c6233e
1 changed files with 1 additions and 1 deletions
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hotspot/src/share/vm/gc/cms/compactibleFreeListSpace.cpp
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@ -2536,7 +2536,7 @@ void CompactibleFreeListSpaceLAB::compute_desired_plab_size() {
_blocks_to_claim[i].sample( _blocks_to_claim[i].sample(
MAX2(CMSOldPLABMin, MAX2(CMSOldPLABMin,
MIN2(CMSOldPLABMax, MIN2(CMSOldPLABMax,
_global_num_blocks[i]/(_global_num_workers[i]*CMSOldPLABNumRefills)))); _global_num_blocks[i]/_global_num_workers[i]/CMSOldPLABNumRefills)));
} }
// Reset counters for next round // Reset counters for next round
_global_num_workers[i] = 0; _global_num_workers[i] = 0;