Method RawSize

cpp/src/arrow/memory_pool.cc:267–272

 private:
  static Result<int64_t> RawSize(int64_t size) {
    if (ARROW_PREDICT_FALSE(internal::AddWithOverflow(size, kOverhead, &size))) {
      return Status::OutOfMemory("Memory allocation size too large");
    }
    return size;
  }

  static void InitAllocatedArea(uint8_t* ptr, int64_t size) {
    DCHECK_NE(size, 0);