First commit

src/Nazara/Core/Clock.cpp

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+// Copyright (C) 2012 Jérôme Leclercq
+// This file is part of the "Nazara Engine".
+// For conditions of distribution and use, see copyright notice in Config.hpp
+
+#define NAZARA_CLOCK_CPP
+
+#include <Nazara/Core/Clock.hpp>
+#include <Nazara/Core/Error.hpp>
+
+#if defined(NAZARA_PLATFORM_WINDOWS)
+	#include <Nazara/Core/Win32/ClockImpl.hpp>
+#elif defined(NAZARA_PLATFORM_POSIX)
+	#include <Nazara/Core/Posix/ClockImpl.hpp>
+#else
+	#error OS not handled
+#endif
+
+#include <Nazara/Core/ThreadSafety.hpp>
+#include <Nazara/Core/Debug.hpp>
+
+NzClock::NzClock() :
+m_elapsedTime(0),
+m_refTime(NzGetMicroseconds()),
+m_paused(false)
+{
+}
+
+float NzClock::GetSeconds() const
+{
+	return GetMicroseconds()/1000000.f;
+}
+
+nzUInt64 NzClock::GetMicroseconds() const
+{
+	NazaraMutex(m_mutex);
+
+	return m_elapsedTime + (NzGetMicroseconds()-m_refTime);
+}
+
+nzUInt64 NzClock::GetMilliseconds() const
+{
+	return GetMicroseconds()/1000;
+}
+
+bool NzClock::IsPaused() const
+{
+	NazaraMutex(m_mutex);
+
+	return m_paused;
+}
+
+void NzClock::Pause()
+{
+	NazaraMutex(m_mutex);
+
+	if (!m_paused)
+	{
+		m_elapsedTime += NzGetMicroseconds()-m_refTime;
+		m_paused = true;
+	}
+	else
+		NazaraWarning("Clock is already paused, ignoring...");
+}
+
+void NzClock::Restart()
+{
+	NazaraMutex(m_mutex);
+
+	m_elapsedTime = 0;
+	m_refTime = NzGetMicroseconds();
+	m_paused = false;
+}
+
+void NzClock::Unpause()
+{
+	NazaraMutex(m_mutex);
+
+	if (m_paused)
+	{
+		m_refTime = NzGetMicroseconds();
+		m_paused = false;
+	}
+	else
+		NazaraWarning("Clock is not paused, ignoring...");
+}
+
+nzUInt64 NzGetMicrosecondsLowPrecision()
+{
+	return NzClockImplGetMilliseconds()*1000ULL;
+}
+
+nzUInt64 NzGetMicrosecondsFirstRun()
+{
+	if (NzClockImplInitializeHighPrecision())
+		NzGetMicroseconds = NzClockImplGetMicroseconds;
+	else
+		NzGetMicroseconds = NzGetMicrosecondsLowPrecision;
+
+	return NzGetMicroseconds();
+}
+
+NzClockFunction NzGetMicroseconds = NzGetMicrosecondsFirstRun;
+NzClockFunction NzGetMilliseconds = NzClockImplGetMilliseconds;