sysdep.cpp

Beginning Direct3D Game Programming源代码Part3chapter12

/*   ColDet - C++ 3D Collision Detection Library
 *   Copyright (C) 2000   Amir Geva
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 * 
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details.
 * 
 * You should have received a copy of the GNU Library General Public
 * License along with this library; if not, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA  02111-1307, USA.
 *
 * Any comments, questions and bug reports send to:
 *   [e-mail]
 *
 * Or visit the home page: http://photoneffect.com/coldet/
 */
#include "sysdep.h"

#ifdef GCC

#include <sys/time.h>

// Returns a time index in milliseconds
DWORD GetTickCount()
{
  static struct timezone tz={0,0};
  static const double t1=1000.0;
  static const double t2=0.001;
  timeval t;
  gettimeofday(&t,&tz);
  return long((t.tv_sec&0x000FFFFF)*t1 + t.tv_usec*t2);
}

#endif