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8152180: SIGFPE in CMSCollector::preclean with big CMSScheduleRemarkSamplingRatio

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Rephrased the calculation routine to avoid an overflow for CMSScheduleRemarkSamplingRatio

Reviewed-by: jwilhelm, drwhite
This commit is contained in:
Sangheon Kim 2016-04-07 15:33:25 -07:00
parent c66cf8bde7
commit 10c7cac93e
1 changed files with 1 additions and 1 deletions
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2
hotspot/src/share/vm/gc/cms/concurrentMarkSweepGeneration.cpp
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@ -3598,7 +3598,7 @@ void CMSCollector::preclean() {
size_t capacity = get_eden_capacity();
// Don't start sampling unless we will get sufficiently
// many samples.
if (used < (capacity/(CMSScheduleRemarkSamplingRatio * 100)
if (used < (((capacity / CMSScheduleRemarkSamplingRatio) / 100)
* CMSScheduleRemarkEdenPenetration)) {
_start_sampling = true;
} else {