MdePkg/Library/BaseLib/Ia32/CpuPause.c

   1 /** @file
   2   CpuPause function.
   3
   4   Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
   5   SPDX-License-Identifier: BSD-2-Clause-Patent
   6
   7 **/
   8
   9 /**
  10   Requests CPU to pause for a short period of time.
  11
  12   Requests CPU to pause for a short period of time. Typically used in MP
  13   systems to prevent memory starvation while waiting for a spin lock.
  14
  15 **/
  16 VOID
  17 EFIAPI
  18 CpuPause (
  19   VOID
  20   )
  21 {
  22   _asm {
  23     pause
  24   }
  25 }