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// ************************************************************************************************
//
// BornAgain: simulate and fit reflection and scattering
//
//! @file Fit/Tool/WallclockTimer.cpp
//! @brief Implements class WallclockTimer.
//!
//! @homepage http://www.bornagainproject.org
//! @license GNU General Public License v3 or higher (see COPYING)
//! @copyright Forschungszentrum Jülich GmbH 2018
//! @authors Scientific Computing Group at MLZ (see CITATION, AUTHORS)
//
// ************************************************************************************************
#include "Fit/Tool/WallclockTimer.h"
#include <chrono>
using clock_used = std::chrono::high_resolution_clock;
using duration_unit = std::chrono::seconds;
//! Internal state of a WallclockTimer object.
struct WallclockTimerState {
std::chrono::time_point<clock_used> m_start_time;
std::chrono::time_point<clock_used> m_end_time;
bool m_is_running{false};
};
WallclockTimer::WallclockTimer()
: m_state(new WallclockTimerState)
{
}
WallclockTimer::~WallclockTimer() = default;
void WallclockTimer::start()
{
m_state->m_is_running = true;
m_state->m_start_time = clock_used::now();
}
void WallclockTimer::stop()
{
m_state->m_is_running = false;
m_state->m_end_time = clock_used::now();
}
double WallclockTimer::runTime() const
{
duration_unit diff =
m_state->m_is_running
? std::chrono::duration_cast<duration_unit>(clock_used::now() - m_state->m_start_time)
: std::chrono::duration_cast<duration_unit>(m_state->m_end_time
- m_state->m_start_time);
return (double)diff.count();
}
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