uint32_t IOBuf::approximateShareCountOne() const {
  if (UNLIKELY(!sharedInfo())) {
    return 1U;
  }
  return sharedInfo()->refcount.load(std::memory_order_acquire);
}
uint32_t IOBuf::approximateShareCountOne() const {
  if (UNLIKELY(!sharedInfo())) {
    return 1U;
  }
  return sharedInfo()->refcount.load(std::memory_order_acquire);
}