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Joseph Provino 2015-12-15 16:01:00 +00:00
commit a0734684c5
1 changed files with 5 additions and 1 deletions
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6
hotspot/src/share/vm/gc/cms/compactibleFreeListSpace.cpp
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@ -2511,7 +2511,11 @@ void CFLS_LAB::get_from_global_pool(size_t word_sz, AdaptiveFreeList<FreeChunk>*
// Lacking sufficient experience, CMSOldPLABResizeQuicker is disabled by
// default.
if (ResizeOldPLAB && CMSOldPLABResizeQuicker) {
size_t multiple = _num_blocks[word_sz]/(CMSOldPLABToleranceFactor*CMSOldPLABNumRefills*n_blks);
//
// On a 32-bit VM, the denominator can become zero because of integer overflow,
// which is why there is a cast to double.
//
size_t multiple = (size_t) (_num_blocks[word_sz]/(((double)CMSOldPLABToleranceFactor)*CMSOldPLABNumRefills*n_blks));
n_blks += CMSOldPLABReactivityFactor*multiple*n_blks;
n_blks = MIN2(n_blks, CMSOldPLABMax);
}