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/*
* Copyright (C) 2005-2018 Team Kodi
* This file is part of Kodi - https://kodi.tv
*
* SPDX-License-Identifier: GPL-2.0-or-later
* See LICENSES/README.md for more information.
*/
#pragma once
#include <chrono>
#include <stdint.h>
class CStopWatch
{
public:
CStopWatch() = default;
~CStopWatch() = default;
/*!
\brief Retrieve the running state of the stopwatch.
\return True if stopwatch has been started but not stopped.
*/
inline bool IsRunning() const
{
return m_isRunning;
}
/*!
\brief Record start time and change state to running.
*/
inline void StartZero()
{
m_startTick = std::chrono::steady_clock::now();
m_isRunning = true;
}
/*!
\brief Record start time and change state to running, only if the stopwatch is stopped.
*/
inline void Start()
{
if (!m_isRunning)
StartZero();
}
/*!
\brief Record stop time and change state to not running.
*/
inline void Stop()
{
if(m_isRunning)
{
m_stopTick = std::chrono::steady_clock::now();
m_isRunning = false;
}
}
/*!
\brief Set the start time such that time elapsed is now zero.
*/
void Reset()
{
if (m_isRunning)
m_startTick = std::chrono::steady_clock::now();
else
m_startTick = m_stopTick;
}
/*!
\brief Retrieve time elapsed between the last call to Start(), StartZero()
or Reset() and; if running, now; if stopped, the last call to Stop().
\return Elapsed time, in seconds, as a float.
*/
float GetElapsedSeconds() const
{
std::chrono::duration<float> elapsed;
if (m_isRunning)
elapsed = std::chrono::steady_clock::now() - m_startTick;
else
elapsed = m_stopTick - m_startTick;
return elapsed.count();
}
/*!
\brief Retrieve time elapsed between the last call to Start(), StartZero()
or Reset() and; if running, now; if stopped, the last call to Stop().
\return Elapsed time, in milliseconds, as a float.
*/
float GetElapsedMilliseconds() const
{
std::chrono::duration<float, std::milli> elapsed;
if (m_isRunning)
elapsed = std::chrono::steady_clock::now() - m_startTick;
else
elapsed = m_stopTick - m_startTick;
return elapsed.count();
}
private:
std::chrono::time_point<std::chrono::steady_clock> m_startTick;
std::chrono::time_point<std::chrono::steady_clock> m_stopTick;
bool m_isRunning = false;
};
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