chi_timer.cc

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#include"chi_timer.h"
 
#include <cmath>
#include <ctime>
#include <thread>
 
//################################################################### Default constr
/** Default constructor.*/
chi::Timer::Timer() noexcept
{
  start_time_ = std::chrono::steady_clock::now();
}
 
//################################################################### Reset
/** Resets the timer to zero.*/
void chi::Timer::Reset()
{
  start_time_ = std::chrono::steady_clock::now();
}
 
//################################################################### Get time
/** Gets the current timer value in milliseconds.*/
double chi::Timer::GetTime() const
{
  using namespace std::chrono;
 
  steady_clock::time_point newTime = std::chrono::steady_clock::now();
  duration<double> time_span =
    duration_cast<duration<double>>(newTime - start_time_);
 
  return time_span.count()*1000.0;
}
 
//################################################################### Get string
/**Obtains a string in the format of hh:mm::ss.
 *
 * */
std::string chi::Timer::GetTimeString() const
{
  double time_sec = this->GetTime()/1000.0;
  int    hours    = std::floor(time_sec/60/60);
  int    minutes  = std::floor((time_sec-60*60*hours)/60);
  int    seconds  = (int)time_sec - 3600*hours - 60*minutes;
 
  char buff[100];
  snprintf(buff,100,"%02d:%02d:%02d",hours,minutes,seconds);
 
  return {buff};
}
 
//################################################################### Get date
/**Obtains a string in the format YYYY-MM-DD hh:mm:ss
 *
 * */
std::string chi::Timer::GetLocalDateTimeString()
{
  using namespace std::chrono;
  std::time_t now = system_clock::to_time_t(system_clock::now());
 
  char s[30];
  size_t end = std::strftime(s, 30, "%Y-%m-%d %H:%M:%S", std::localtime(&now));
  s[29] = '\0';
  if (end < 30)  s[end]='\0';
  return s;
}
 
//###################################################################
void chi::Sleep(std::chrono::duration<double> time)
{
  std::this_thread::sleep_for(time);
}