timer.h

/* 
 * Copyright (C) 2006-2013  Music Technology Group - Universitat Pompeu Fabra
 *
 * This file is part of Gaia
 * 
 * Gaia is free software: you can redistribute it and/or modify it under 
 * the terms of the GNU Affero General Public License as published by the Free 
 * Software Foundation (FSF), 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 Affero GNU General Public License
 * version 3 along with this program.  If not, see http://www.gnu.org/licenses/
 */

#ifndef GAIA_TIMER_H
#define GAIA_TIMER_H

#include "osdetect.h"

#ifndef OS_WIN32
#include <sys/time.h>

namespace gaia2 {

class Timer {
  double _total;
  struct timeval _begin, _end;
  bool _isRunning;

  static double diff(const struct timeval& end, const struct timeval& begin) {
    return (end.tv_sec - begin.tv_sec) + 1e-6 * (end.tv_usec - begin.tv_usec);
  }

 public:
  Timer();

  void start();

  void restart() {
    reset();
    start();
  }

  void stop();

  void reset();

  double elapsed() const;

};

} // namespace gaia2

#else // OS_WIN32

namespace gaia2 {

class Timer {

 public:
  Timer() {}

  void start() {}

  void restart() {
    reset();
    start();
  }

  void stop() {}

  void reset() {}

  double elapsed() const { return 0; }

};

} // namespace gaia2

#endif // OS_WIN32

#endif // GAIA_TIMER_H