Function _mi_arena_alloc_aligned

3rd/mimalloc-2.0.9/src/arena.c:248–277

}

void* _mi_arena_alloc_aligned(size_t size, size_t alignment, size_t align_offset, bool* commit, bool* large, bool* is_pinned, bool* is_zero,
                              mi_arena_id_t req_arena_id, size_t* memid, mi_os_tld_t* tld)
{
  mi_assert_internal(commit != NULL && is_pinned != NULL && is_zero != NULL && memid != NULL && tld != NULL);
  mi_assert_internal(size > 0);
  *memid   = MI_MEMID_OS;
  *is_zero = false;
  *is_pinned = false;

  bool default_large = false;
  if (large == NULL) large = &default_large;   // ensure `large != NULL`
  const int numa_node = _mi_os_numa_node(tld); // current numa node

  // try to allocate in an arena if the alignment is small enough and the object is not too small (as for heap meta data)
  if (size >= MI_ARENA_MIN_OBJ_SIZE && alignment <= MI_SEGMENT_ALIGN && align_offset == 0) {
    void* p = mi_arena_allocate(numa_node, size, alignment, commit, large, is_pinned, is_zero, req_arena_id, memid, tld);
    if (p != NULL) return p;
  }

  // finally, fall back to the OS
  if (mi_option_is_enabled(mi_option_limit_os_alloc) || req_arena_id != _mi_arena_id_none()) {
    errno = ENOMEM;
    return NULL;
  }
  *is_zero = true;
  *memid   = MI_MEMID_OS;
  void* p = _mi_os_alloc_aligned_offset(size, alignment, align_offset, *commit, large, tld->stats);
  if (p != NULL) { *is_pinned = *large; }
  return p;
}

void* _mi_arena_alloc(size_t size, bool* commit, bool* large, bool* is_pinned, bool* is_zero, mi_arena_id_t req_arena_id, size_t* memid, mi_os_tld_t* tld)
{