lib/msvcrt/time/clock.c

   1 /*
   2  * COPYRIGHT:   See COPYING in the top level directory
   3  * PROJECT:     ReactOS system libraries
   4  * FILE:        lib/msvcrt/time/clock.c
   5  * PURPOSE:     Get elapsed time
   6  * PROGRAMER:   Boudewijn Dekker
   7  * UPDATE HISTORY:
   8  *              28/12/98: Created
   9  */
  10
  11 #include <windows.h>
  12 #include <msvcrt/time.h>
  13 #include <msvcrt/internal/file.h>
  14
  15 VOID STDCALL GetSystemTimeAsFileTime(LPFILETIME  lpSystemTimeAsFileTime );
  16
  17 clock_t clock ( void )
  18 {
  19   FILETIME CreationTime;
  20   FILETIME ExitTime;
  21   FILETIME KernelTime;
  22   FILETIME UserTime;
  23   DWORD Remainder;
  24
  25   if (!GetProcessTimes(GetCurrentProcess(),&CreationTime,&ExitTime,&KernelTime,&UserTime))
  26     return -1;
  27
  28   return FileTimeToUnixTime(&KernelTime,&Remainder) + FileTimeToUnixTime(&UserTime,&Remainder);
  29 }