timer_inl.h

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 *   Copyright (c) 2005-2026 by                                             *
 *       - Pierre-Henri WUILLEMIN(_at_LIP6)                                 *
 *       - Christophe GONZALES(_at_AMU)                                     *
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 *       - Pierre-Henri WUILLEMIN(_at_LIP6)                                 *
 *       - Christophe GONZALES(_at_AMU)                                     *
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#pragma once
 
 
// to ease IDE parser
#include <chrono>
 
#include <agrum/base/core/timer.h>
 
namespace gum {
 
 
  INLINE
  void Timer::reset() {
    sleeping_ = false;
    start_    = std::chrono::high_resolution_clock::now();
    pause_    = std::chrono::high_resolution_clock::now();
 
    // do start_ = clock(); while ( start_ == k );// to be sure to start at the
    // beginning of a tick
  }
 
  INLINE
  std::chrono::duration< double, std::milli > Timer::step_() const {
    std::chrono::duration< double, std::milli > ms;
    if (sleeping_) ms = pause_ - start_;
    else ms = std::chrono::high_resolution_clock::now() - start_;
 
    return ms;
  }
 
  INLINE
  double Timer::step() const { return step_().count() / 1000.0; }
 
  INLINE
  double Timer::pause() {
    if (!sleeping_) {
      pause_    = std::chrono::high_resolution_clock::now();
      sleeping_ = true;
    }
 
    return step();
  }
 
  INLINE
  double Timer::resume() {
    if (sleeping_) {
      start_ += std::chrono::high_resolution_clock::now() - pause_;
      sleeping_ = false;
    }
 
    return step();
  }
 
  INLINE
  std::ostream& operator<<(std::ostream& os, const Timer& t) { return os << t.toString(); }
} /* namespace gum */