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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