Method submit

include/exec/linux/io_uring_context.hpp:470–500

\brief Submits the given task to the io_uring. \returns true if the task was submitted, false if this io context and this task is have been stopped.

      /// \brief Submits the given task to the io_uring.
      /// \returns true if the task was submitted, false if this io context and this task is have been stopped.
      auto submit(__task* __op) noexcept -> bool
      {
        // As long as the number of in-flight submissions is not __no_new_submissions, we can
        // increment the counter and push the operation onto the queue.
        // If the number of in-flight submissions is __no_new_submissions, we have already
        // finished the stop operation of the io context and we can immediately stop the operation inline.
        // Remark: As long as the stopping is in progress we can still submit new operations.
        // But no operation will be submitted to io uring unless it is a cancellation operation.
        int __n = 0;
        while (__n != __no_new_submissions
               && !__n_submissions_in_flight_.compare_exchange_weak(
                 __n,
                 __n + 1,
                 STDEXEC::__std::memory_order_acquire,
                 STDEXEC::__std::memory_order_relaxed))
          ;
        if (__n == __no_new_submissions)
        {
          __stop(__op);
          return false;
        }
        else
        {
          __requests_.push_front(__op);
          [[maybe_unused]]
          int __prev = __n_submissions_in_flight_.fetch_sub(1,
                                                            STDEXEC::__std::memory_order_relaxed);
          STDEXEC_ASSERT(__prev > 0);
          return true;
        }
      }

      /// @brief Submit any pending tasks and complete any ready tasks.
      ///