117 lines
2.3 KiB
C++
117 lines
2.3 KiB
C++
// Copyright (C) 2015 Jérôme Leclercq
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// This file is part of the "Nazara Engine - Core module"
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// For conditions of distribution and use, see copyright notice in Config.hpp
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#include <Nazara/Core/Clock.hpp>
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#include <Nazara/Core/Error.hpp>
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#if defined(NAZARA_PLATFORM_WINDOWS)
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#include <Nazara/Core/Win32/ClockImpl.hpp>
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#elif defined(NAZARA_PLATFORM_POSIX)
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#include <Nazara/Core/Posix/ClockImpl.hpp>
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#else
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#error OS not handled
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#endif
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#if NAZARA_CORE_THREADSAFE && NAZARA_THREADSAFETY_CLOCK
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#include <Nazara/Core/ThreadSafety.hpp>
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#else
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#include <Nazara/Core/ThreadSafetyOff.hpp>
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#endif
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#include <Nazara/Core/Debug.hpp>
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namespace Nz
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{
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namespace Detail
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{
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UInt64 GetMicrosecondsLowPrecision()
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{
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return ClockImplGetElapsedMilliseconds()*1000ULL;
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}
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UInt64 GetElapsedMicrosecondsFirstRun()
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{
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if (ClockImplInitializeHighPrecision())
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GetElapsedMicroseconds = ClockImplGetElapsedMicroseconds;
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else
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GetElapsedMicroseconds = GetMicrosecondsLowPrecision;
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return GetElapsedMicroseconds();
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}
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}
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Clock::Clock(UInt64 startingValue, bool paused) :
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m_elapsedTime(startingValue),
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m_refTime(GetElapsedMicroseconds()),
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m_paused(paused)
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{
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}
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float Clock::GetSeconds() const
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{
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return GetMicroseconds()/1000000.f;
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}
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UInt64 Clock::GetMicroseconds() const
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{
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NazaraLock(m_mutex);
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UInt64 elapsedMicroseconds = m_elapsedTime;
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if (!m_paused)
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elapsedMicroseconds += (GetElapsedMicroseconds() - m_refTime);
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return elapsedMicroseconds;
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}
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UInt64 Clock::GetMilliseconds() const
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{
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return GetMicroseconds()/1000;
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}
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bool Clock::IsPaused() const
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{
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NazaraLock(m_mutex);
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return m_paused;
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}
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void Clock::Pause()
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{
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NazaraLock(m_mutex);
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if (!m_paused)
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{
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m_elapsedTime += GetElapsedMicroseconds() - m_refTime;
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m_paused = true;
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}
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else
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NazaraWarning("Clock is already paused, ignoring...");
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}
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void Clock::Restart()
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{
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NazaraLock(m_mutex);
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m_elapsedTime = 0;
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m_refTime = GetElapsedMicroseconds();
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m_paused = false;
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}
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void Clock::Unpause()
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{
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NazaraLock(m_mutex);
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if (m_paused)
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{
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m_refTime = GetElapsedMicroseconds();
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m_paused = false;
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}
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else
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NazaraWarning("Clock is not paused, ignoring...");
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}
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ClockFunction GetElapsedMicroseconds = Detail::GetElapsedMicrosecondsFirstRun;
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ClockFunction GetElapsedMilliseconds = ClockImplGetElapsedMilliseconds;
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}
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