SimpleHR.hpp

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/*
 *
 * ---
 *
 *  Copyright (C) 2022 Anselm Schmidt (ans[ät]ohai.su)
 *
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version in addition to the terms of any
 *  licences already herein identified.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program. If not, see <https://www.gnu.org/licenses/>.
 *
 * ---
 *
 * SimpleHR.hpp
 *
 * Simple high resolution timer for getting the time since creation in microseconds.
 *
 *  Created on: Oct 17, 2018
 *      Author: ans
 */

#ifndef TIMER_SIMPLEHR_HPP_
#define TIMER_SIMPLEHR_HPP_

#include "../Helper/DateTime.hpp"

#include <chrono>   // std::chrono
#include <string>   // std::string

namespace crawlservpp::Timer {

    /*
     * DECLARATION
     */


    class SimpleHR {
    public:

        SimpleHR();


        std::uint64_t tick();
        std::string tickStr();


        void clear();


    protected:

        std::chrono::high_resolution_clock::time_point timePoint;

    };

    /*
     * IMPLEMENTATION
     */

    inline SimpleHR::SimpleHR() : timePoint(std::chrono::high_resolution_clock::now()) {}


    inline std::uint64_t SimpleHR::tick() {
        const auto result{
            std::chrono::duration_cast<std::chrono::microseconds>(
                    std::chrono::high_resolution_clock::now() - this->timePoint
            ).count()
        };

        this->timePoint = std::chrono::high_resolution_clock::now();

        return result;
    }


    inline std::string SimpleHR::tickStr() {
        const auto result{
            std::chrono::duration_cast<std::chrono::microseconds>(
                    std::chrono::high_resolution_clock::now() - this->timePoint
            ).count()
        };

        this->timePoint = std::chrono::high_resolution_clock::now();

        return Helper::DateTime::microsecondsToString(result);
    }

    inline void SimpleHR::clear() {
        this->timePoint = std::chrono::high_resolution_clock::time_point{};
    }

} /* namespace crawlservpp::Timer */

#endif /* TIMER_SIMPLEHR_HPP_ */