UTimer.h

/*
*  utilite is a cross-platform library with
*  useful utilities for fast and small developing.
*  Copyright (C) 2010  Mathieu Labbe
*
*  utilite is free library: 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.
*
*  utilite 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 this program.  If not, see <http://www.gnu.org/licenses/>.
*/
 
#ifndef UTIMER_H
#define UTIMER_H
 
#include "rtabmap/utilite/utilite_export.h" // DLL export/import defines
 
#ifdef _WIN32
#include <windows.h>
#else
#include <sys/time.h>
#include <time.h>
#endif
 
class UTILITE_EXPORT UTimer
{
public:
    UTimer();
    ~UTimer();
 
    static double now();
 
    void start();
 
    void stop();
 
    double elapsed() {return getElapsedTime();}
    double getElapsedTime();
 
    double restart() {return ticks();}
    double ticks();
 
private:
#ifdef _WIN32
    LARGE_INTEGER startTimeRecorded_; /* When we start the timer, timeRecorded is copied over lastTimeRecorded.*/
    LARGE_INTEGER stopTimeRecorded_;  /* When we stop the timer. */
 
    LARGE_INTEGER frequency_;          /* Keep the frequency of the counter */
#else
    struct timeval startTimeRecorded_; /* When we start the timer, timeRecorded is copied over lastTimeRecorded.*/
    struct timeval stopTimeRecorded_;  /* When we stop the timer. */
#endif
};
 
#endif //UTIMER_H