Add Posix clock support.

Former-commit-id: 1631e1028e94a88f7d19d7c217d83b8ae17936d7

src/Nazara/Core/Posix/ClockImpl.cpp

@@ -0,0 +1,30 @@
+// Copyright (C) 2012 Jérôme Leclercq
+// This file is part of the "Nazara Engine - Core module"
+// For conditions of distribution and use, see copyright notice in Config.hpp
+
+#include <Nazara/Core/Posix/ClockImpl.hpp>
+#include <Nazara/Core/Error.hpp>
+#include <ctime>
+#include <sys/time.h>
+#include <Nazara/Core/Debug.hpp>
+
+
+bool NzClockImplInitializeHighPrecision()
+{
+    // No initialization needed
+}
+
+nzUInt64 NzClockImplGetMicroseconds()
+{
+	timeval clock;
+    gettimeofday(&clock, nullptr);
+    return static_cast<nzUInt64>(clock.tv_sec*1000000 + (clock.tv_nsec/1000));
+
+}
+
+nzUInt64 NzClockImplGetMilliseconds()
+{
+    timeval clock;
+    gettimeofday(&clock, nullptr);
+    return static_cast<nzUInt64>(clock.tv_sec*1000 + (clock.tv_nsec/1000000));
+}

src/Nazara/Core/Posix/ClockImpl.hpp

@@ -0,0 +1,16 @@
+// Copyright (C) 2012 Jérôme Leclercq
+// This file is part of the "Nazara Engine - Core module"
+// For conditions of distribution and use, see copyright notice in Config.hpp
+
+#pragma once
+
+#ifndef NAZARA_CLOCKIMPL_POSIX_HPP
+#define NAZARA_CLOCKIMPL_POSIX_HPP
+
+#include <Nazara/Prerequesites.hpp>
+
+bool NzClockImplInitializeHighPrecision();
+nzUInt64 NzClockImplGetMicroseconds();
+nzUInt64 NzClockImplGetMilliseconds();
+
+#endif // NAZARA_CLOCKIMPL_POSIX_HPP