system-wall-clock-timestamp.h

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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/*
 * Copyright (c) 2020 Lawrence Livermore National Laboratory
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation;
 *
 * 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * Author: Peter D. Barnes, Jr. <pdbarnes@llnl.gov>
 */
 
#ifndef SYSTEM_WALL_CLOCK_TIMESTAMP_H
#define SYSTEM_WALL_CLOCK_TIMESTAMP_H
 
#include <string>
#include <ctime>  // ctime, time_t
 
 
namespace ns3 {
  
class SystemWallClockTimestamp
{
public:
  SystemWallClockTimestamp (void);
 
  void Stamp (void);
 
  std::string ToString (void) const;
 
  std::time_t GetLast (void) const;
 
  std::time_t GetInterval (void) const;
  
private:
 
  std::time_t m_last;
  
  std::time_t m_diff;    
 
};  // class SystemWallClockTimestamp
 
}  // namespace ns3
 
#endif  /* SYSTEM_WALL_CLOCK_TIMESTAMP_H */