osrm-backend/include/util/timing_util.hpp

#ifndef TIMING_UTIL_HPP
#define TIMING_UTIL_HPP

#include <chrono>
#include <cstdint>

namespace osrm::util
{

#define TIMER_START(_X) auto _X##_start = std::chrono::steady_clock::now(), _X##_stop = _X##_start
#define TIMER_STOP(_X) _X##_stop = std::chrono::steady_clock::now()
#define TIMER_NSEC(_X)                                                                             \
    std::chrono::duration_cast<std::chrono::nanoseconds>(_X##_stop - _X##_start).count()
#define TIMER_USEC(_X)                                                                             \
    std::chrono::duration_cast<std::chrono::microseconds>(_X##_stop - _X##_start).count()
#define TIMER_MSEC(_X)                                                                             \
    (0.000001 *                                                                                    \
     std::chrono::duration_cast<std::chrono::nanoseconds>(_X##_stop - _X##_start).count())
#define TIMER_SEC(_X)                                                                              \
    (0.000001 *                                                                                    \
     std::chrono::duration_cast<std::chrono::microseconds>(_X##_stop - _X##_start).count())
#define TIMER_MIN(_X)                                                                              \
    std::chrono::duration_cast<std::chrono::minutes>(_X##_stop - _X##_start).count()
} // namespace osrm::util

#endif // TIMING_UTIL_HPP