timer.hpp

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/*****************************************************************************
    NumeRe: Framework fuer Numerische Rechnungen
    Copyright (C) 2020  Erik Haenel et al.
 
    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.
 
    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 <http://www.gnu.org/licenses/>.
******************************************************************************/
 
#ifndef TIMER_HPP
#define TIMER_HPP
 
#include <chrono>
#include <string>
#include "../../kernel.hpp"
#include "tools.hpp"
 
class Timer
{
    private:
        std::chrono::time_point<std::chrono::system_clock, std::chrono::nanoseconds> m_StartPoint;
        std::string m_ScopeName;
 
    public:
        Timer(const std::string& scopeName)
        {
            m_ScopeName = scopeName;
            m_StartPoint = std::chrono::time_point_cast<std::chrono::nanoseconds>(std::chrono::system_clock::now());
        }
 
        ~Timer()
        {
            Stop();
        }
 
        void Stop()
        {
            auto endTimePoint = std::chrono::time_point_cast<std::chrono::nanoseconds>(std::chrono::system_clock::now());
            std::chrono::nanoseconds time_span = endTimePoint - m_StartPoint;
 
            NumeReKernel::print("[" + m_ScopeName + "] Measured run time: " + toString(time_span.count() / 1000.0, 14) + " mus.");
        }
};
 
 
#endif // TIMER_HPP