Function mi_memid_create

3rd/mimalloc-2.0.9/src/region.c:142–147

}

static size_t mi_memid_create(mem_region_t* region, mi_bitmap_index_t bit_idx) {
  mi_assert_internal(bit_idx < MI_BITMAP_FIELD_BITS);
  size_t idx = region - regions;
  mi_assert_internal(&regions[idx] == region);
  return (idx*MI_BITMAP_FIELD_BITS + bit_idx)<<1;
}

static size_t mi_memid_create_from_arena(size_t arena_memid) {
  return (arena_memid << 1) | 1;