text: /*
    Copyright ©2013 The Regents of the University of California
    (Regents). All Rights Reserved. Permission to use, copy, modify, and
    distribute this software and its documentation for educational,
    research, and not-for-profit purposes, without fee and without a
    signed licensing agreement, is hereby granted, provided that the
    above copyright notice, this paragraph and the following two
    paragraphs appear in all copies, modifications, and
    distributions. Contact The Office of Technology Licensing, UC
    Berkeley, 2150 Shattuck Avenue, Suite 510, Berkeley, CA 94720-1620,
    (510) 643-7201, for commercial licensing opportunities.
  
    IN NO EVENT SHALL REGENTS BE LIABLE TO ANY PARTY FOR DIRECT,
    INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING
    LOST PROFITS, ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS
    DOCUMENTATION, EVEN IF REGENTS HAS BEEN ADVISED OF THE POSSIBILITY
    OF SUCH DAMAGE.
  
    REGENTS SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, BUT NOT
    LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
    FOR A PARTICULAR PURPOSE. THE SOFTWARE AND ACCOMPANYING
    DOCUMENTATION, IF ANY, PROVIDED HEREUNDER IS PROVIDED "AS
    IS". REGENTS HAS NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT,
    UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
  */
  
  #include <iostream>
  #include "timer.hpp"
  #include "simulation.hpp"
  using namespace std;
  using namespace boost::posix_time;
  
  Timer::Timer (): last(0), total(0) {
      tick();
  }
  
  void Timer::tick () {
      then = microsec_clock::local_time();
  }
  
  void Timer::tock () {
      ptime now = microsec_clock::local_time();
      last = (now - then).total_microseconds()*1e-6;
      total += last;
      then = now;
  }
  