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review is_zero flag

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This commit is contained in:
daanx 2023-04-18 17:18:39 -07:00
parent b845be241a
commit 4d976270eb
6 changed files with 17 additions and 15 deletions
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13
src/page.c
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@ -639,11 +639,6 @@ static void mi_page_extend_free(mi_heap_t* heap, mi_page_t* page, mi_tld_t* tld)
// enable the new free list
page->capacity += (uint16_t)extend;
mi_stat_increase(tld->stats.page_committed, extend * bsize);
// extension into zero initialized memory preserves the zero'd free list
if (!page->is_zero_init) {
page->is_zero = false;
}
mi_assert_expensive(mi_page_is_valid_init(page));
}
@ -667,12 +662,12 @@ static void mi_page_init(mi_heap_t* heap, mi_page_t* page, size_t block_size, mi
page->keys[0] = _mi_heap_random_next(heap);
page->keys[1] = _mi_heap_random_next(heap);
#endif
#if MI_DEBUG > 0
page->is_zero = false; // ensure in debug mode we initialize with MI_DEBUG_UNINIT, see issue #501
#else
page->is_zero = page->is_zero_init;
#if MI_DEBUG>1
if (page->is_zero_init) {
mi_mem_is_zero(page_start, page_size);
}
#endif
mi_assert_internal(page->capacity == 0);
mi_assert_internal(page->free == NULL);
mi_assert_internal(page->used == 0);