Method lock

thread/thread.cpp:1621–1631

    }

    int ticket_spinlock::lock() {
        const auto ticket = next.fetch_add(1, std::memory_order_relaxed);
        while (serv.load(std::memory_order_acquire) != ticket) {
#ifdef __aarch64__
            asm volatile("isb" : : : "memory");
#else
            _mm_pause();
#endif
        }
        return 0;
    }

    void ticket_spinlock::unlock() {
        const auto successor = serv.load(std::memory_order_relaxed) + 1;