110 lines
1.9 KiB
C
110 lines
1.9 KiB
C
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/*++
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Copyright (c) 2000 Microsoft Corporation
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Module Name:
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tracelib.h
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Abstract:
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Private headers for user-mode trace library
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Author:
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15-Aug-2000 JeePang
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Revision History:
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--*/
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#ifndef _TRACELIB_H_
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#define _TRACELIB_H_
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#define WmipNtStatusToDosError(Status) ((ULONG)((Status == STATUS_SUCCESS)?ERROR_SUCCESS:RtlNtStatusToDosError(Status)))
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#if defined(_IA64_)
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#include <ia64reg.h>
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#endif
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//
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// NTDLL cannot call GetSystemTimeAsFileTime
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//
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__inline __int64 WmipGetSystemTime()
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{
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LARGE_INTEGER SystemTime;
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//
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// Read system time from shared region.
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//
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do {
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SystemTime.HighPart = USER_SHARED_DATA->SystemTime.High1Time;
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SystemTime.LowPart = USER_SHARED_DATA->SystemTime.LowPart;
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} while (SystemTime.HighPart != USER_SHARED_DATA->SystemTime.High2Time);
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return SystemTime.QuadPart;
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}
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//
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// GetCycleCounts
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//
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// Since we do not want to make a kernel mode transition to get the
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// thread CPU Times, we settle for just getting the CPU Cycle counts.
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// We use the following macros from BradW to get the CPU cycle count.
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// This method may be inaccurate if the clocks are not synchronized
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// between processors.
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//
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#if defined(_X86_)
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__inline
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LONGLONG
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WmipGetCycleCount(
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)
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{
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__asm{
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RDTSC
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}
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}
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#elif defined(_AMD64_)
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#define WmipGetCycleCount() ReadTimeStampCounter()
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#elif defined(_IA64_)
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#define WmipGetCycleCount() __getReg(CV_IA64_ApITC)
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#else
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#error "perf: a target architecture must be defined."
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#endif
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PVOID
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WmipMemReserve(
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IN SIZE_T Size
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);
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PVOID
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WmipMemCommit(
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IN PVOID Buffer,
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IN SIZE_T Size
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);
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ULONG
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WmipMemFree(
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IN PVOID Buffer
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);
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HANDLE
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WmipCreateFile(
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LPCWSTR lpFileName,
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DWORD dwDesiredAccess,
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DWORD dwShareMode,
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DWORD dwCreationDisposition,
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DWORD dwCreateFlags
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);
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NTSTATUS
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WmipGetCpuSpeed(
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OUT DWORD* CpuNum,
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OUT DWORD* CpuSpeed
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);
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#endif // _TRACELIB_H_
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