Method Arrive

library/cpp/threading/future/future_mt_ut.cpp:35–44

        }

        void Arrive() {
            // barrier is not for synchronization, just to ensure good timings, so
            // std::memory_order_relaxed is enough
            Waiting_.fetch_add(-1, std::memory_order_relaxed);

            while (Waiting_.load(std::memory_order_relaxed)) {
            }

            Y_ASSERT(Waiting_.load(std::memory_order_relaxed) >= 0);
        }

    private:
        std::atomic<i64> Waiting_;