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review is_zero flag

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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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11
src/alloc.c
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@ -46,12 +46,17 @@ extern inline void* _mi_page_malloc(mi_heap_t* heap, mi_page_t* page, size_t siz
// zero the block? note: we need to zero the full block size (issue #63)
if mi_unlikely(zero) {
mi_assert_internal(page->xblock_size != 0); // do not call with zero'ing for huge blocks (see _mi_malloc_generic)
const size_t zsize = (page->is_zero ? sizeof(block->next) + MI_PADDING_SIZE : page->xblock_size);
_mi_memzero_aligned(block, zsize - MI_PADDING_SIZE);
if (page->is_zero) {
block->next = 0;
}
else {
mi_assert_internal(page->xblock_size >= MI_PADDING_SIZE);
_mi_memzero_aligned(block, page->xblock_size - MI_PADDING_SIZE);
}
}
#if (MI_DEBUG>0) && !MI_TRACK_ENABLED && !MI_TSAN
if (!page->is_zero && !zero && !mi_page_is_huge(page)) {
if (!zero && !mi_page_is_huge(page)) {
memset(block, MI_DEBUG_UNINIT, mi_page_usable_block_size(page));
}
#elif (MI_SECURE!=0)