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/****************************************************************************
*
* Ultra Long Period Timer
*
* ========================================================================
*
* The contents of this file are subject to the SciTech MGL Public
* License Version 1.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.scitechsoft.com/mgl-license.txt
*
* Software distributed under the License is distributed on an
* "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* The Original Code is Copyright (C) 1991-1998 SciTech Software, Inc.
*
* The Initial Developer of the Original Code is SciTech Software, Inc.
* All Rights Reserved.
*
* ========================================================================
*
* Language: ANSI C
* Environment: 32-bit Windows VxD
*
* Description: VxD specific code for the CPU detection module.
*
****************************************************************************/
/*----------------------------- Implementation ----------------------------*/
/****************************************************************************
REMARKS:
Do nothing for VxD's
****************************************************************************/
#define SetMaxThreadPriority() 0
/****************************************************************************
REMARKS:
Do nothing for VxD's
****************************************************************************/
#define RestoreThreadPriority(i) (void)(i)
/****************************************************************************
REMARKS:
Initialise the counter and return the frequency of the counter.
****************************************************************************/
static void GetCounterFrequency(
CPU_largeInteger *freq)
{
KeQueryPerformanceCounter((LARGE_INTEGER*)freq);
}
/****************************************************************************
REMARKS:
Read the counter and return the counter value.
****************************************************************************/
#define GetCounter(t) \
{ \
LARGE_INTEGER lt = KeQueryPerformanceCounter(NULL); \
(t)->low = lt.LowPart; \
(t)->high = lt.HighPart; \
}