reactos/dll/win32/kernel32/misc/perfcnt.c

   1 /* $Id$ */
   2 /*
   3  * COPYRIGHT:       See COPYING in the top level directory
   4  * PROJECT:         ReactOS system libraries
   5  * FILE:            lib/kernel32/misc/perfcnt.c
   6  * PURPOSE:         Performance counter
   7  * PROGRAMMER:      Eric Kohl
   8  */
   9
  10 /* INCLUDES *****************************************************************/
  11
  12 #include <k32.h>
  13
  14 #define NDEBUG
  15 #include <debug.h>
  16
  17
  18 /* FUNCTIONS ****************************************************************/
  19
  20 /*
  21  * @implemented
  22  */
  23 BOOL WINAPI
  24 QueryPerformanceCounter(LARGE_INTEGER *lpPerformanceCount)
  25 {
  26   LARGE_INTEGER Frequency;
  27   NTSTATUS Status;
  28
  29   Status = NtQueryPerformanceCounter(lpPerformanceCount,
  30                                      &Frequency);
  31   if (!NT_SUCCESS(Status))
  32   {
  33     SetLastErrorByStatus(Status);
  34     return(FALSE);
  35   }
  36
  37   if (Frequency.QuadPart == 0ULL)
  38   {
  39     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
  40     return(FALSE);
  41   }
  42
  43   return(TRUE);
  44 }
  45
  46
  47 /*
  48  * @implemented
  49  */
  50 BOOL WINAPI
  51 QueryPerformanceFrequency(LARGE_INTEGER *lpFrequency)
  52 {
  53   LARGE_INTEGER Count;
  54   NTSTATUS Status;
  55
  56   Status = NtQueryPerformanceCounter(&Count,
  57                                      lpFrequency);
  58   if (!NT_SUCCESS(Status))
  59   {
  60     SetLastErrorByStatus(Status);
  61     return(FALSE);
  62   }
  63
  64   if (lpFrequency->QuadPart == 0ULL)
  65   {
  66     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
  67     return(FALSE);
  68   }
  69
  70   return(TRUE);
  71 }
  72
  73 /* EOF */