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# OgreSDLTimer.cpp

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    00001 /*
    00002 -----------------------------------------------------------------------------
    00003 This source file is part of OGRE
    00004     (Object-oriented Graphics Rendering Engine)
    00005 For the latest info, see http://www.ogre3d.org/
    00006
    00007 Copyright Š 2000-2002 The OGRE Team
    00008 Also see acknowledgements in Readme.html
    00009
    00010 This program is free software; you can redistribute it and/or modify it under
    00011 the terms of the GNU Lesser General Public License as published by the Free Software
    00012 Foundation; either version 2 of the License, or (at your option) any later
    00013 version.
    00014
    00015 This program is distributed in the hope that it will be useful, but WITHOUT
    00016 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
    00017 FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
    00018
    00019 You should have received a copy of the GNU Lesser General Public License along with
    00020 this program; if not, write to the Free Software Foundation, Inc., 59 Temple
    00021 Place - Suite 330, Boston, MA 02111-1307, USA, or go to
    00022 http://www.gnu.org/copyleft/lesser.txt.
    00023 -----------------------------------------------------------------------------
    00024 */
    00025
    00026 #include "OgreSDLTimer.h"
    00027 #include <sys/time.h>
    00028
    00029 namespace Ogre {
    00030
    00031 #ifdef _WIN32
    00032 #define WIN32_LEAN_AND_MEAN
    00033 #include <windows.h>
    00034 void gettimeofday(struct timeval* p, void* tz /* IGNORED */){
    00035      union {
    00036        long long ns100; /*time since 1 Jan 1601 in 100ns units */
    00037        FILETIME ft;
    00038      } _now;
    00039
    00040      GetSystemTimeAsFileTime( &(_now.ft) );
    00041      p->tv_usec=(long)((_now.ns100 / 10LL) % 1000000LL );
    00042      p->tv_sec= (long)((_now.ns100-(116444736000000000LL))/10000000LL);
    00043      return;
    00044 }
    00045 #endif
    00046
    00047
    00048     void SDLTimer::reset()
    00049     {
    00050         Timer::reset();
    00051         gettimeofday(&start, NULL);
    00052     }
    00053
    00054     unsigned long SDLTimer::getMilliseconds()
    00055     {
    00056         struct timeval now;
    00057         gettimeofday(&now, NULL);
    00058         return (now.tv_sec-start.tv_sec)*1000+(now.tv_usec-start.tv_usec)/1000;
    00059     }
    00060
    00061     unsigned long SDLTimer::getMicroseconds()
    00062     {
    00063         struct timeval now;
    00064         gettimeofday(&now, NULL);
    00065         return (now.tv_sec-start.tv_sec)*1000000+(now.tv_usec-start.tv_usec);
    00066     }
    00067 }

Copyright © 2002-2003 by The OGRE Team
Last modified Sun Nov 28 19:48:46 2004