reactos/subsystems/win32/win32k/eng/perfcnt.c

   1 /*
   2  *  ReactOS W32 Subsystem
   3  *  Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003 ReactOS Team
   4  *
   5  *  This program is free software; you can redistribute it and/or modify
   6  *  it under the terms of the GNU General Public License as published by
   7  *  the Free Software Foundation; either version 2 of the License, or
   8  *  (at your option) any later version.
   9  *
  10  *  This program is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License
  16  *  along with this program; if not, write to the Free Software
  17  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  18  */
  19 /* $Id$
  20  *
  21  * COPYRIGHT:         See COPYING in the top level directory
  22  * PROJECT:           ReactOS kernel
  23  * PURPOSE:           GDI Driver Performance Counter Functions
  24  * FILE:              subsys/win32k/eng/perfcnt.c
  25  * PROGRAMER:         Ge van Geldorp
  26  */
  27
  28 #include <w32k.h>
  29
  30 #define NDEBUG
  31 #include <debug.h>
  32
  33 /*
  34  * @implemented
  35  */
  36 VOID STDCALL
  37 EngQueryPerformanceFrequency(LONGLONG *Frequency)
  38 {
  39   LARGE_INTEGER Freq;
  40
  41   KeQueryPerformanceCounter(&Freq);
  42   *Frequency = Freq.QuadPart;
  43 }
  44
  45 /*
  46  * @implemented
  47  */
  48 VOID STDCALL
  49 EngQueryPerformanceCounter(LONGLONG *Count)
  50 {
  51   LARGE_INTEGER PerfCount;
  52
  53   PerfCount = KeQueryPerformanceCounter(NULL);
  54   *Count = PerfCount.QuadPart;
  55 }