Method state

cpp/src/arrow/util/future.h:340–343

\brief Return the Future's current state A return value of PENDING is only indicative, as the Future can complete concurrently. A return value of FAILURE or SUCCESS is definitive, though.

  /// A return value of PENDING is only indicative, as the Future can complete
  /// concurrently.  A return value of FAILURE or SUCCESS is definitive, though.
  FutureState state() const {
    CheckValid();
    return impl_->state();
  }

  /// \brief Whether the Future is finished
  ///