Method start

include/exec/static_thread_pool.hpp:1621–1634

        {}

        void start() & noexcept
        {
          std::unique_lock lock{parent_->start_mutex_};
          if (!parent_->has_started_)
          {
            parent_->tasks_.push_back(static_cast<task_base*>(this));
            parent_->tasks_size_ += 1;
          }
          else
          {
            lock.unlock();
            parent_->pool_.enqueue(static_cast<task_base*>(this));
          }
        }
      };

      template <class Range>