Timer.inl

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//
//
/*
    Copyright (C) 2000 PARAPET partners
    Copyright (C) 2000- 2009, Hammersmith Imanet Ltd
    Copyright (C) 2023, University College London
    This file is part of STIR.
 
    SPDX-License-Identifier: Apache-2.0 AND License-ref-PARAPET-license
 
    See STIR/LICENSE.txt for details
*/
#include "stir/error.h"
 
START_NAMESPACE_STIR
 
Timer::Timer()
{
  running = false;
  previous_total_value = 0.;
}
 
Timer::~Timer()
{}
 
void
Timer::start(bool do_reset)
{
  if (!running)
    {
      if (do_reset)
        reset();
      running = true;
      previous_value = get_current_value();
    }
  else if (do_reset)
    error("Timer::start called requesting reset, but the timer is running");
}
 
void
Timer::stop()
{
  if (running)
    {
      previous_total_value += get_current_value() - previous_value;
      running = false;
    }
}
 
#ifdef OLDDESIGN
void
Timer::restart()
{
  previous_total_value = 0.;
  running = false;
  start();
}
#endif
 
void
Timer::reset()
{
  assert(running == false);
  previous_total_value = 0.;
}
 
double
Timer::value() const
{
  double tmp = previous_total_value;
  if (running)
    tmp += get_current_value() - previous_value;
  return tmp;
}
 
END_NAMESPACE_STIR