52 lines
1.1 KiB
C
52 lines
1.1 KiB
C
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/******************************Module*Header*******************************\
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* Module Name: Perf.h
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*
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* Performance counter functions. Uses the Pentium performance counters
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* if they are available, otherwise falls back to the system QueryPerformance
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* api's.
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*
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* InitPerfCounter MUST be called before using the QUERY_PERFORMANCE_XXX macros
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* as it initializes the two global functions pointers.
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*
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*
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* Created: 13-10-95
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* Author: Stephen Estrop [StephenE]
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*
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* Copyright (c) 1995 Microsoft Corporation
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\**************************************************************************/
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#ifndef _PERF_
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#define _PERF_
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#ifdef __cplusplus
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extern "C" {
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#endif /* __cplusplus */
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void
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InitPerfCounter(
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void
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);
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void
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QueryPerfCounter(
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LARGE_INTEGER *li
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);
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void
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QueryPerfFrequency(
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LARGE_INTEGER *li
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);
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typedef void (WINAPI* PERFFUNCTION)(LARGE_INTEGER *li);
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extern PERFFUNCTION lpQueryPerfCounter;
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extern PERFFUNCTION lpQueryPerfFreqency;
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#define QUERY_PERFORMANCE_FREQUENCY(x) (*lpQueryPerfFreqency)(x)
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#define QUERY_PERFORMANCE_COUNTER(x) (*lpQueryPerfCounter)(x)
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#ifdef __cplusplus
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}
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#endif /* __cplusplus */
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#endif /* !_PERF_ */
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