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wip: purgeable arenas, various fixes

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daanx 2023-04-03 17:58:28 -07:00
parent a9f42376b7
commit d22a13c990
5 changed files with 18 additions and 26 deletions
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10
src/segment.c
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@ -756,7 +756,7 @@ static void mi_segment_slice_split(mi_segment_t* segment, mi_slice_t* slice, siz
mi_assert_internal(segment->kind != MI_SEGMENT_HUGE);
size_t next_index = mi_slice_index(slice) + slice_count;
size_t next_count = slice->slice_count - slice_count;
mi_segment_span_free(segment, next_index, next_count, false /* don't decommit left-over part */, tld);
mi_segment_span_free(segment, next_index, next_count, false /* don't purge left-over part */, tld);
slice->slice_count = (uint32_t)slice_count;
}
@ -915,7 +915,7 @@ static mi_segment_t* mi_segment_alloc(size_t required, size_t page_alignment, mi
}
segment->commit_mask = commit_mask; // on lazy commit, the initial part is always committed
segment->allow_decommit = !segment->mem_is_pinned && !segment->mem_is_large;
segment->allow_decommit = !segment->mem_is_pinned && !segment->mem_is_large;
segment->allow_purge = mi_option_is_enabled(mi_option_allow_purge) && segment->allow_decommit;
if (segment->allow_purge) {
segment->purge_expire = 0; // don't decommit just committed memory // _mi_clock_now() + mi_option_get(mi_option_purge_delay);
@ -969,7 +969,7 @@ static mi_segment_t* mi_segment_alloc(size_t required, size_t page_alignment, mi
// initialize initial free pages
if (segment->kind == MI_SEGMENT_NORMAL) { // not a huge page
mi_assert_internal(huge_page==NULL);
mi_segment_span_free(segment, info_slices, segment->slice_entries - info_slices, false /* don't decommit */, tld);
mi_segment_span_free(segment, info_slices, segment->slice_entries - info_slices, false /* don't purge */, tld);
}
else {
mi_assert_internal(huge_page!=NULL);
@ -1585,7 +1585,7 @@ static mi_page_t* mi_segment_huge_page_alloc(size_t size, size_t page_alignment,
mi_assert_internal(psize - (aligned_p - start) >= size);
uint8_t* decommit_start = start + sizeof(mi_block_t); // for the free list
ptrdiff_t decommit_size = aligned_p - decommit_start;
_mi_os_decommit(decommit_start, decommit_size, &_mi_stats_main); // note: cannot use segment_decommit on huge segments
_mi_os_reset(decommit_start, decommit_size, &_mi_stats_main); // note: cannot use segment_decommit on huge segments
}
return page;
@ -1630,7 +1630,7 @@ void _mi_segment_huge_page_reset(mi_segment_t* segment, mi_page_t* page, mi_bloc
if (segment->allow_decommit) {
const size_t csize = mi_usable_size(block) - sizeof(mi_block_t);
uint8_t* p = (uint8_t*)block + sizeof(mi_block_t);
_mi_os_decommit(p, csize, &_mi_stats_main); // note: cannot use segment_decommit on huge segments
_mi_os_reset(p, csize, &_mi_stats_main); // note: cannot use segment_decommit on huge segments
}
}
#endif