reactos/dll/win32/kernel32_vista/GetTickCount64.c

   1
   2 #include "k32_vista.h"
   3
   4 /*
   5  * @implemented
   6  */
   7 ULONGLONG
   8 WINAPI
   9 GetTickCount64(VOID)
  10 {
  11     ULARGE_INTEGER TickCount;
  12
  13     while (TRUE)
  14     {
  15         TickCount.HighPart = (ULONG)SharedUserData->TickCount.High1Time;
  16         TickCount.LowPart = SharedUserData->TickCount.LowPart;
  17
  18         if (TickCount.HighPart == (ULONG)SharedUserData->TickCount.High2Time) break;
  19
  20         YieldProcessor();
  21      }
  22
  23      return (UInt32x32To64(TickCount.LowPart, SharedUserData->TickCountMultiplier) >> 24) +
  24             (UInt32x32To64(TickCount.HighPart, SharedUserData->TickCountMultiplier) << 8);
  25 }