text: #ifndef BOSON_EVENTLOOP_H_
  #define BOSON_EVENTLOOP_H_
  #pragma once
  
  #include <cstdint>
  #include <memory>
  #include <tuple>
  
  namespace boson {
  using event_status = int;
  enum class loop_end_reason { max_iter_reached, timed_out, error_occured };
  };
  
  #endif  // BOSON_EVENTLOOP_H_
  