Method size

3rd/MPMCQueue/include/MPMCQueue.hpp:132–136

* @brief Get an approximate size of the queue * * Note: This is an approximation and may not be accurate in concurrent * scenarios. * * @return size_t Approximate number of elements in the queue */

   * @return size_t Approximate number of elements in the queue
   */
  [[nodiscard]] auto size() const noexcept -> size_t {
    size_t head = head_.load(std::memory_order_relaxed);
    size_t tail = tail_.load(std::memory_order_relaxed);
    return head >= tail ? head - tail : 0;
  }

  /**
   * @brief Check if the queue is empty (approximate)