Method cancel

include/boost/asio/basic_waitable_timer.hpp:408–414

Cancel any asynchronous operations that are waiting on the timer. * This function forces the completion of any pending asynchronous wait * operations against the timer. The handler for each cancelled operation will * be invoked with the boost::asio::error::operation_aborted error code. * * Cancelling the timer does not change the expiry time. * * @return The number of asynchronou

   * error code that indicates the successful completion of the wait operation.
   */
  std::size_t cancel()
  {
    boost::system::error_code ec;
    std::size_t s = impl_.get_service().cancel(impl_.get_implementation(), ec);
    boost::asio::detail::throw_error(ec, "cancel");
    return s;
  }

  /// Cancels one asynchronous operation that is waiting on the timer.
  /**