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Limit to exact fit on Windows with retain off.

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W/o retain, split and merge are disallowed on Windows.  Avoid doing first-fit
which needs splitting almost always.  Instead, try exact fit only and bail out
early.
This commit is contained in:
Qi Wang 2019-07-29 11:43:08 -07:00 committed by Qi Wang
parent 5742473cc8
commit c9cdc1b27f
1 changed files with 10 additions and 0 deletions
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10
src/extent.c
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@ -445,6 +445,16 @@ extents_first_fit_locked(tsdn_t *tsdn, arena_t *arena, extents_t *extents,
extent_t *ret = NULL; extent_t *ret = NULL;
pszind_t pind = sz_psz2ind(extent_size_quantize_ceil(size)); pszind_t pind = sz_psz2ind(extent_size_quantize_ceil(size));
if (!maps_coalesce && !opt_retain) {
/*
* No split / merge allowed (Windows w/o retain). Try exact fit
* only.
*/
return extent_heap_empty(&extents->heaps[pind]) ? NULL :
extent_heap_first(&extents->heaps[pind]);
}
for (pszind_t i = (pszind_t)bitmap_ffu(extents->bitmap, for (pszind_t i = (pszind_t)bitmap_ffu(extents->bitmap,
&extents_bitmap_info, (size_t)pind); &extents_bitmap_info, (size_t)pind);
i < SC_NPSIZES + 1; i < SC_NPSIZES + 1;