time_utils.hpp

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#pragma once
#ifndef _TIME_SHIELD_TIME_UTILS_HPP_INCLUDED
#define _TIME_SHIELD_TIME_UTILS_HPP_INCLUDED
 
#include "config.hpp"
#include <ctime>
 
namespace time_shield {
 
    inline const struct timespec get_timespec_impl() noexcept {
        // https://en.cppreference.com/w/c/chrono/timespec_get
        struct timespec ts;
#       if defined(CLOCK_REALTIME)
        clock_gettime(CLOCK_REALTIME, &ts); // Версия для POSIX
#       else
        timespec_get(&ts, TIME_UTC);
#       endif
        return ts;
    }
 
    template<class T = int>
    inline const T ns_of_sec() noexcept {
        const struct timespec ts = get_timespec_impl();
        return static_cast<T>(ts.tv_nsec);
    }
 
    template<class T = int>
    const T us_of_sec() noexcept {
        const struct timespec ts = get_timespec_impl();
        return ts.tv_nsec / NS_PER_US;
    }
 
    template<class T = int>
    const T ms_of_sec() noexcept {
        const struct timespec ts = get_timespec_impl();
        return ts.tv_nsec / NS_PER_MS;
    }
 
    inline const ts_t ts() noexcept {
        const struct timespec ts = get_timespec_impl();
        return ts.tv_sec;
    }
 
    inline const ts_t timestamp() noexcept {
        const struct timespec ts = get_timespec_impl();
        return ts.tv_sec;
    }
 
    inline const fts_t fts() noexcept {
        const struct timespec ts = get_timespec_impl();
        return ts.tv_sec + static_cast<fts_t>(ts.tv_nsec) / static_cast<fts_t>(NS_PER_SEC);
    }
 
    inline const fts_t ftimestamp() noexcept {
        const struct timespec ts = get_timespec_impl();
        return ts.tv_sec + static_cast<fts_t>(ts.tv_nsec) / static_cast<fts_t>(NS_PER_SEC);
    }
 
    inline const ts_ms_t ts_ms() noexcept {
        const struct timespec ts = get_timespec_impl();
        return MS_PER_SEC * ts.tv_sec + ts.tv_nsec / NS_PER_MS;
    }
 
    inline const ts_ms_t timestamp_ms() noexcept {
        const struct timespec ts = get_timespec_impl();
        return MS_PER_SEC * ts.tv_sec + ts.tv_nsec / NS_PER_MS;
    }
 
    inline const ts_ms_t now() noexcept {
        const struct timespec ts = get_timespec_impl();
        return MS_PER_SEC * ts.tv_sec + ts.tv_nsec / NS_PER_MS;
    }
 
    inline const ts_us_t ts_us() noexcept {
        const struct timespec ts = get_timespec_impl();
        return US_PER_SEC * ts.tv_sec + ts.tv_nsec / NS_PER_US;
    }
 
    inline const ts_us_t timestamp_us() noexcept {
        const struct timespec ts = get_timespec_impl();
        return US_PER_SEC * ts.tv_sec + ts.tv_nsec / NS_PER_US;
    }
}; // namespace time_shield
 
#endif // _TIME_SHIELD_TIME_UTILS_HPP_INCLUDED