---

timer.hpp

Go to the documentation of this file.

/*
 * Equation Cruncher
 * Copyright (C) 2004  Dhruv Matani(dhruvbird@yahoo.com)
 * 
 * 
 * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307
 * USA
 */

#if !defined EC_TIMER_HPP
#define EC_TIMER_HPP

#include <sys/times.h>

namespace eqn_cruncher
{
  class timer
  {
    clock_t     elapsed_begin;
    clock_t     elapsed_end;
    tms         tms_begin;
    tms         tms_end;
    
  public:
    timer() 
    { this->clear(); }


    void 
    clear()
    {
      elapsed_begin = 0;
      elapsed_end = 0;
      memset(&tms_begin, 0, sizeof(tms));
      memset(&tms_end, 0, sizeof(tms));
    }


    void
    start()
    { elapsed_begin = times(&tms_begin); }


    void
    stop()
    { elapsed_end = times(&tms_end); }


    size_t
    real_time() const
    { return elapsed_end - elapsed_begin; }


    size_t
    user_time() const
    { return tms_end.tms_utime - tms_begin.tms_utime; }


    size_t
    system_time() const
    { return tms_end.tms_stime - tms_begin.tms_stime; }
  };
}

#endif // EC_TIMER_HPP

---