[mirror_edk2.git] / MdePkg / Library / BaseLib / Ia32 / CpuPause.c

/** @file\r
  CpuPause function.\r
\r
  Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>\r
  This program and the accompanying materials\r
  are licensed and made available under the terms and conditions of the BSD License\r
  which accompanies this distribution.  The full text of the license may be found at\r
  http://opensource.org/licenses/bsd-license.php\r
\r
  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
\r
**/\r
\r
\r
\r
\r
/**\r
  Requests CPU to pause for a short period of time.\r
\r
  Requests CPU to pause for a short period of time. Typically used in MP\r
  systems to prevent memory starvation while waiting for a spin lock.\r
\r
**/\r
VOID\r
EFIAPI\r
CpuPause (\r
  VOID\r
  )\r
{\r
  _asm {\r
    pause\r
  }\r
}\r
\r
Commit	Line	Data
e1f414b6	1	/** @file\r
	2	CpuPause function.\r
	3	\r
bb817c56 HT	4	Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>\r
bb817c56 HT	5	This program and the accompanying materials\r
e1f414b6	6	are licensed and made available under the terms and conditions of the BSD License\r
	7	which accompanies this distribution. The full text of the license may be found at\r
	8	http://opensource.org/licenses/bsd-license.php\r
	9	\r
	10	THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
	11	WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
	12	\r
	13	**/\r
	14	\r
1efcc4ae	15	\r
f734a10a	16	\r
e1f414b6	17	\r
42eedea9	18	/**\r
	19	Requests CPU to pause for a short period of time.\r
	20	\r
	21	Requests CPU to pause for a short period of time. Typically used in MP\r
	22	systems to prevent memory starvation while waiting for a spin lock.\r
	23	\r
	24	**/\r
e1f414b6	25	VOID\r
	26	EFIAPI\r
	27	CpuPause (\r
	28	VOID\r
	29	)\r
	30	{\r
	31	_asm {\r
	32	pause\r
	33	}\r
	34	}\r
	35	\r