CRNTimer.h

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/* Copyright 2009-2015 INSA Lyon, CoReNum, Université Paris Descartes
 * 
 * This file is part of libcrn.
 * 
 * libcrn is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * libcrn 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 Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public License
 * along with libcrn.  If not, see <http://www.gnu.org/licenses/>.
 * 
 * file: CRNTimer.h
 * \author Yann LEYDIER
 */

#ifndef CRNTimer_HEADER
#define CRNTimer_HEADER

#include <CRNString.h>
#include <map>

namespace crn
{
    class Timer
    {
        public:
            /***********************************************************************/
            /* Simple unique stopwatch *********************************************/
            /***********************************************************************/
            static void Start();
            static double Stop();

            /***********************************************************************/
            /* Full stopwatch that can be used in parallel *************************/
            /***********************************************************************/
            static void Start(const String &timername);
            static double Split(const String &timername, const String &splitname);
            static String Stats(const String &timername);
            static void Destroy(const String &timername);

        private:
            Timer() {}
            static double getTime();

            using StopTime = std::pair<String, double>;
            struct StopWatch
            {
                std::vector<StopTime> stops;
                double t0;
            };
            static std::map<String, StopWatch> stopwatches; 
    };
}

#endif