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refactor mi_free_try_collect_mt

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This commit is contained in:
Daan Leijen 2025-02-04 15:03:27 -08:00
parent db7930f961
commit b0c8d86c41
1 changed files with 6 additions and 5 deletions
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11
src/free.c
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@ -217,12 +217,13 @@ static void mi_decl_noinline mi_free_try_collect_mt(mi_page_t* page, mi_block_t*
return;
}
const bool too_full = mi_page_is_used_at_frac(page, 8); // more than 7/8th of the page is in use?
// 2. if the page is not too full, we can try to reclaim it for ourselves
// note: this seems a bad idea but it speeds up some benchmarks (like `larson`) quite a bit.
if (_mi_option_get_fast(mi_option_page_reclaim_on_free) != 0 &&
page->block_size <= MI_SMALL_MAX_OBJ_SIZE && // only for small sized blocks
!mi_page_is_used_at_frac(page,8) // and not too full
// && !mi_page_is_abandoned_mapped(page)
if (!too_full &&
_mi_option_get_fast(mi_option_page_reclaim_on_free) != 0 &&
page->block_size <= MI_SMALL_MAX_OBJ_SIZE // only for small sized blocks
)
{
// the page has still some blocks in use (but not too many)
@ -252,7 +253,7 @@ static void mi_decl_noinline mi_free_try_collect_mt(mi_page_t* page, mi_block_t*
}
// 3. if the page is unmapped, try to reabandon so it can possibly be mapped and found for allocations
if (!mi_page_is_used_at_frac(page,8) && // only reabandon if a full page starts to have enough blocks available to prevent immediate re-abandon of a full page
if (!too_full && // only reabandon if a full page starts to have enough blocks available to prevent immediate re-abandon of a full page
!mi_page_is_abandoned_mapped(page) && page->memid.memkind == MI_MEM_ARENA &&
_mi_arenas_page_try_reabandon_to_mapped(page))
{