Timer.h

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/*
* ==========================================================================
*               This file is part of the implementation of
*
*               <FrameFab: Robotic Fabrication of Frame Shapes>
*               Yijiang Huang, Juyong Zhang, Xin Hu, Guoxian Song, Zhongyuan Liu, Lei Yu, Ligang Liu
*               In ACM Transactions on Graphics (Proc. SIGGRAPH Asia 2016)
----------------------------------------------------------------------------
*               class:  Timer
*
*               Description:  Timing tool.
*
*               Version:  1.0
*               Created:  Mar/23/2016
*               Updated:  Aug/24/2016
*
*               Author:  Xin Hu, Yijiang Huang, Guoxian Song
*               Company:  GCL@USTC
----------------------------------------------------------------------------
*               Copyright (C) 2016  Yijiang Huang, Xin Hu, Guoxian Song, Juyong Zhang
*               and Ligang Liu.
*
*               FrameFab 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.
*
*               FrameFab 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 FrameFab.  If not, see <http://www.gnu.org/licenses/>.
* ==========================================================================
*/

#pragma once

#ifndef FIBER_PRINT_TIMER_H
#define FIBER_PRINT_TIMER_H

#include <chrono>
#include <ctime>
#include <iostream>
#include <string>

class Timer
{
        typedef std::chrono::time_point<std::chrono::system_clock> TimePoint;
        typedef std::chrono::duration<double> Duration;
public:
        Timer();
        ~Timer();

public:
        void    Start();
        void    Stop();
        void    Reset();
        void    Print(char *item);
        std::string ToString() const;

private:
        TimePoint       start_time_;
        TimePoint       end_time_;
        double          sum_time_;
        int                     count_;
};

std::ostream& operator << (std::ostream & os, const Timer& t);


#endif //Timer.h