114 lines
2.2 KiB
C++
114 lines
2.2 KiB
C++
// Copyright (C) 2014 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
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{
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nzUInt64 NzGetMicrosecondsLowPrecision()
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{
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return NzClockImplGetMilliseconds()*1000ULL;
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}
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nzUInt64 NzGetMicrosecondsFirstRun()
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{
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if (NzClockImplInitializeHighPrecision())
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NzGetMicroseconds = NzClockImplGetMicroseconds;
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else
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NzGetMicroseconds = NzGetMicrosecondsLowPrecision;
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return NzGetMicroseconds();
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}
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}
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NzClock::NzClock(nzUInt64 startingValue, bool paused) :
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m_elapsedTime(startingValue),
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m_refTime(NzGetMicroseconds()),
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m_paused(paused)
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{
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}
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float NzClock::GetSeconds() const
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{
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return GetMicroseconds()/1000000.f;
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}
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nzUInt64 NzClock::GetMicroseconds() const
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{
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NazaraLock(m_mutex);
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nzUInt64 elapsedMicroseconds = m_elapsedTime;
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if (!m_paused)
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elapsedMicroseconds += (NzGetMicroseconds() - m_refTime);
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return elapsedMicroseconds;
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}
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nzUInt64 NzClock::GetMilliseconds() const
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{
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return GetMicroseconds()/1000;
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}
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bool NzClock::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 NzClock::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 += NzGetMicroseconds()-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 NzClock::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 = NzGetMicroseconds();
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m_paused = false;
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}
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void NzClock::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 = NzGetMicroseconds();
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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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NzClockFunction NzGetMicroseconds = NzGetMicrosecondsFirstRun;
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NzClockFunction NzGetMilliseconds = NzClockImplGetMilliseconds;
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