Source code of Windows XP (NT5)
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//+---------------------------------------------------------------------------
//
// Microsoft Windows
// Copyright (C) Microsoft Corporation, 1992 - 1993.
//
// File: perf.hxx
//
// Contents:
//
// Classes:
//
// Functions:
//
// History: 10-03-94 RichardW Created
//
//----------------------------------------------------------------------------
#ifdef PERF
typedef struct _SpmPerfCounter {
ULONGLONG Time;
ULONGLONG TotalTime;
DWORD Count;
DWORD Reserved;
} SpmPerfCounter, * PSpmPerfCounter;
typedef struct _SpmPerfArray {
DWORD PerfId;
DWORD cCounters;
SpmPerfCounter Counters[1];
} SpmPerfArray, * PSpmPerfArray;
#define DECLARE_PERFARRAY(x) PSpmPerfArray x;
DWORD
SpmPerfRegister(DWORD cCounters);
PSpmPerfArray
SpmPerfInstanciate(DWORD PerfId);
VOID
SpmPerfRelease(PVOID pvPerf,
char * pszBanner,
char * *ppszCounterLabels);
VOID
SpmPerfDump( PVOID pvPerf,
char * pszBanner,
char * *ppszCounterLabels);
VOID
SpmPerfSetFile(char * pszFile);
__inline
VOID
SpmPerfBegin(
PVOID pvPerf,
DWORD Counter)
{
PSpmPerfCounter pCounter;
PSpmPerfArray pArray;
pArray = (PSpmPerfArray) pvPerf;
pCounter = &pArray->Counters[Counter];
NtQuerySystemTime((PLARGE_INTEGER) &pCounter->Time);
}
__inline
VOID
SpmPerfEnd(
PVOID pvPerf,
DWORD Counter)
{
PSpmPerfCounter pCounter;
ULONGLONG EndTime;
PSpmPerfArray pArray;
pArray = (PSpmPerfArray) pvPerf;
pCounter = &pArray->Counters[Counter];
NtQuerySystemTime((PLARGE_INTEGER) &EndTime);
EndTime -= pCounter->Time;
pCounter->Time = EndTime;
pCounter->TotalTime += EndTime;
pCounter->Count++;
}
#else // Not PERF
#define DECLARE_PERFARRAY(x)
#define SpmPerfRegister(x) 1
#define SpmPerfInstanciate(x) NULL
#define SpmPerfRelease(x,y,z)
#define SpmPerfBegin(x,y)
#define SpmPerfEnd(x,y)
#define SpmPerfSetFile(x)
#endif // PERF or not to PERF