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Eset: take opt_lg_max_active_fit as a parameter.

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This breaks its dependence on the global.
This commit is contained in:
David Goldblatt 2020-03-14 09:46:09 -07:00 • committed by David Goldblatt
parent 883ab327cc
commit 7bb6e2dc0d
3 changed files with 31 additions and 14 deletions
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14
src/extent.c
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@ -398,8 +398,18 @@ extent_recycle_extract(tsdn_t *tsdn, pa_shard_t *shard, ehooks_t *ehooks,
emap_unlock_edata(tsdn, &emap_global, unlock_edata);
}
} else {
edata = eset_fit(&ecache->eset, size, alignment,
ecache->delay_coalesce);
/*
* A large extent might be broken up from its original size to
* some small size to satisfy a small request. When that small
* request is freed, though, it won't merge back with the larger
* extent if delayed coalescing is on. The large extent can
* then no longer satify a request for its original size. To
* limit this effect, when delayed coalescing is enabled, we
* put a cap on how big an extent we can split for a request.
*/
unsigned lg_max_fit = ecache->delay_coalesce
? (unsigned)opt_lg_extent_max_active_fit : SC_PTR_BITS;
edata = eset_fit(&ecache->eset, size, alignment, lg_max_fit);
}
if (edata == NULL) {
malloc_mutex_unlock(tsdn, &ecache->mtx);