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# Platform.cpp

    00001
    00002 //
    00003 // SFML - Simple and Fast Multimedia Library
    00004 // Copyright (C) 2007-2009 Laurent Gomila (laurent.gom@gmail.com)
    00005 //
    00006 // This software is provided 'as-is', without any express or implied warranty.
    00007 // In no event will the authors be held liable for any damages arising from the use of this software.
    00008 //
    00009 // Permission is granted to anyone to use this software for any purpose,
    00010 // including commercial applications, and to alter it and redistribute it freely,
    00011 // subject to the following restrictions:
    00012 //
    00013 // 1. The origin of this software must not be misrepresented;
    00014 //    you must not claim that you wrote the original software.
    00015 //    If you use this software in a product, an acknowledgment
    00016 //    in the product documentation would be appreciated but is not required.
    00017 //
    00018 // 2. Altered source versions must be plainly marked as such,
    00019 //    and must not be misrepresented as being the original software.
    00020 //
    00021 // 3. This notice may not be removed or altered from any source distribution.
    00022 //
    00024
    00026 // Headers
    00028 #include <SFML/System/Win32/Platform.hpp>
    00029 #include <windows.h>
    00030
    00031
    00032 namespace sf
    00033 {
    00034 namespace priv
    00035 {
    00039 double Platform::GetSystemTime()
    00040 {
    00041     static LARGE_INTEGER Frequency;
    00042     static BOOL          UseHighPerformanceTimer = QueryPerformanceFrequency(&Frequency);
    00043
    00044     if (UseHighPerformanceTimer)
    00045     {
    00046         // High performance counter available : use it
    00047         LARGE_INTEGER CurrentTime;
    00048         QueryPerformanceCounter(&CurrentTime);
    00049
    00050         return static_cast<double>(CurrentTime.QuadPart) / Frequency.QuadPart;
    00051     }
    00052     else
    00053     {
    00054         // High performance counter not available : use GetTickCount (less accurate)
    00055         return GetTickCount() * 0.001;
    00056     }
    00057 }
    00058
    00059
    00063 void Platform::Sleep(float Time)
    00064 {
    00065     ::Sleep(static_cast<DWORD>(Time * 1000));
    00066 }
    00067
    00068 } // namespace priv
    00069
    00070 } // namespace sf

:: Copyright © 2007-2008 Laurent Gomila, all rights reserved :: Documentation generated by doxygen 1.5.2 ::