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/*
* Copyright (C) 2012-2018 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.
*/
#include "Timer.h"
#include <algorithm>
using namespace std::chrono_literals;
CTimer::CTimer(std::function<void()> const& callback)
: CThread("Timer"), m_callback(callback), m_timeout(0ms), m_interval(false)
{ }
CTimer::CTimer(ITimerCallback *callback)
: CTimer(std::bind(&ITimerCallback::OnTimeout, callback))
{ }
CTimer::~CTimer()
{
Stop(true);
}
bool CTimer::Start(std::chrono::milliseconds timeout, bool interval /* = false */)
{
if (m_callback == NULL || timeout == 0ms || IsRunning())
return false;
m_timeout = timeout;
m_interval = interval;
Create();
return true;
}
bool CTimer::Stop(bool wait /* = false */)
{
if (!IsRunning())
return false;
m_bStop = true;
m_eventTimeout.Set();
StopThread(wait);
return true;
}
void CTimer::RestartAsync(std::chrono::milliseconds timeout)
{
m_timeout = timeout;
m_endTime = std::chrono::steady_clock::now() + timeout;
m_eventTimeout.Set();
}
bool CTimer::Restart()
{
if (!IsRunning())
return false;
Stop(true);
return Start(m_timeout, m_interval);
}
float CTimer::GetElapsedSeconds() const
{
return GetElapsedMilliseconds() / 1000.0f;
}
float CTimer::GetElapsedMilliseconds() const
{
if (!IsRunning())
return 0.0f;
auto now = std::chrono::steady_clock::now();
std::chrono::duration<float, std::milli> duration = (now - (m_endTime - m_timeout));
return duration.count();
}
void CTimer::Process()
{
while (!m_bStop)
{
auto currentTime = std::chrono::steady_clock::now();
m_endTime = currentTime + m_timeout;
// wait the necessary time
auto duration = std::chrono::duration_cast<std::chrono::milliseconds>(m_endTime - currentTime);
if (!m_eventTimeout.Wait(duration))
{
currentTime = std::chrono::steady_clock::now();
if (m_endTime <= currentTime)
{
// execute OnTimeout() callback
m_callback();
// continue if this is an interval timer, or if it was restarted during callback
if (!m_interval && m_endTime <= currentTime)
break;
}
}
}
}
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