/*
 * 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 2
 * 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, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

#pragma once

/** \file
 * \ingroup freestyle
 * \brief Class defining a singleton used as timestamp
 */

#ifdef WITH_CXX_GUARDEDALLOC
#  include "MEM_guardedalloc.h"
#endif

namespace Freestyle {

class TimeStamp {
 public:
  static inline TimeStamp *instance()
  {
    return &_instance;
  }

  inline unsigned getTimeStamp() const
  {
    return _time_stamp;
  }

  inline void increment()
  {
    ++_time_stamp;
  }

  inline void reset()
  {
    _time_stamp = 1;
  }

 protected:
  TimeStamp()
  {
    _time_stamp = 1;
  }

  TimeStamp(const TimeStamp &)
  {
  }

 private:
  static TimeStamp _instance;
  unsigned _time_stamp;

#ifdef WITH_CXX_GUARDEDALLOC
  MEM_CXX_CLASS_ALLOC_FUNCS("Freestyle:TimeStamp")
#endif
};

} /* namespace Freestyle */