Function _mi_page_ptr_unalign

3rd/mimalloc-2.0.9/src/alloc.c:474–479

Adjust a block that was allocated aligned, to the actual start of the block in the page.

// Adjust a block that was allocated aligned, to the actual start of the block in the page.
mi_block_t* _mi_page_ptr_unalign(const mi_segment_t* segment, const mi_page_t* page, const void* p) {
  mi_assert_internal(page!=NULL && p!=NULL);
  const size_t diff   = (uint8_t*)p - _mi_page_start(segment, page, NULL);
  const size_t adjust = (diff % mi_page_block_size(page));
  return (mi_block_t*)((uintptr_t)p - adjust);
}


void mi_decl_noinline _mi_free_generic(const mi_segment_t* segment, mi_page_t* page, bool is_local, void* p) mi_attr_noexcept {