chrono.hpp

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#ifndef LELY_COAPP_DETAIL_CHRONO_HPP_
#define LELY_COAPP_DETAIL_CHRONO_HPP_

#include <lely/coapp/coapp.hpp>

#include <chrono>
#include <limits>

namespace lely {

namespace canopen {

namespace detail {

inline ::std::chrono::milliseconds
FromTimeout(int timeout) {
  using namespace ::std::chrono;
  return timeout <= 0 ? milliseconds::max() : milliseconds(timeout);
}

template <class Rep, class Period>
inline int
ToTimeout(const ::std::chrono::duration<Rep, Period>& d) {
  using namespace ::std::chrono;
  // The maximum duration is interpreted as an infinite timeout.
  if (d == duration<Rep, Period>::max()) return 0;
  auto timeout = duration_cast<milliseconds>(d).count();
  // A timeout less than 1 ms is rounded up to keep it finite.
  if (timeout < 1) return 1;
  if (timeout > ::std::numeric_limits<int>::max())
    return ::std::numeric_limits<int>::max();
  return timeout;
}

}  // namespace detail

}  // namespace canopen

}  // namespace lely

#endif  // LELY_COAPP_DETAIL_CHRONO_HPP_