/*
 * @project      The CERN Tape Archive (CTA)
 * @copyright    Copyright © 2021-2022 CERN
 * @license      This program is free software, distributed under the terms of the GNU General Public
 *               Licence version 3 (GPL Version 3), copied verbatim in the file "COPYING". You can
 *               redistribute it and/or modify it under the terms of the GPL Version 3, 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.
 *
 *               In applying this licence, CERN does not waive the privileges and immunities
 *               granted to it by virtue of its status as an Intergovernmental Organization or
 *               submit itself to any jurisdiction.
 */
#include "Timer.hpp"

//------------------------------------------------------------------------------
// constructor
//------------------------------------------------------------------------------
cta::utils::Timer::Timer() {
  reset();
}

//------------------------------------------------------------------------------
// usecs
//------------------------------------------------------------------------------
int64_t cta::utils::Timer::usecs(reset_t reset) {
  timeval now;
  gettimeofday(&now, nullptr);
  int64_t ret = ((now.tv_sec * 1000000) + now.tv_usec) - 
                 ((m_reference.tv_sec * 1000000) + m_reference.tv_usec);
  if (reset == resetCounter) {
    m_reference = now;
  }
  return ret;
}

//------------------------------------------------------------------------------
// secs
//------------------------------------------------------------------------------
double cta::utils::Timer::secs(reset_t reset) {
  return usecs(reset) * 0.000001;
}

//------------------------------------------------------------------------------
// reset
//------------------------------------------------------------------------------
void cta::utils::Timer::reset() {
  gettimeofday(&m_reference, nullptr);
}