136 lines
3 KiB
C++
136 lines
3 KiB
C++
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/****************************************************************************************************************
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FILENAME: GetTime.cpp
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COPYRIGHT<EFBFBD> 2001 Microsoft Corporation and Executive Software International, Inc.
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*/
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#include "stdafx.h"
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#include <windows.h>
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#include "ErrMacro.h"
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/****************************************************************************************************************
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COPYRIGHT<EFBFBD> 2001 Microsoft Corporation and Executive Software International, Inc.
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ROUTINE DESCRIPTION:
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This routine gets the current system time in the FILETIME format.
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INPUT + OUTPUT:
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pFileTime - Where to write the current time.
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GLOBALS:
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None.
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RETURN:
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TRUE - Success.
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FALSE - Fatal error.
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*/
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BOOL
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GetTime(
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FILETIME* pFileTime
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)
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{
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SYSTEMTIME SystemTime;
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GetLocalTime(&SystemTime);
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EF(SystemTimeToFileTime(&SystemTime, pFileTime));
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return TRUE;
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}
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/****************************************************************************************************************
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COPYRIGHT<EFBFBD> 2001 Microsoft Corporation and Executive Software International, Inc.
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ROUTINE DESCRIPTION:
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This routine returns a formatted time string for output.
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The string is overwritten on each call.
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INPUT:
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pTime - system time struct.
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RETURN:
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Formatted time string: "mm/dd/yyyy hh:mm:ss.ms"
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*/
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PTCHAR
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GetTmpTimeString(
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SYSTEMTIME & pTime
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)
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{
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static TCHAR cTimeStr[100];
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wsprintf(cTimeStr, TEXT("%02d/%02d/%04d %02d:%02d:%02d.%03d"),
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pTime.wMonth, pTime.wDay, pTime.wYear,
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pTime.wHour, pTime.wMinute, pTime.wSecond, pTime.wMilliseconds);
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return cTimeStr;
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}
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/****************************************************************************************************************
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COPYRIGHT<EFBFBD> 2001 Microsoft Corporation and Executive Software International, Inc.
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ROUTINE DESCRIPTION:
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This routine returns the number of seconds between two system times.
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INPUT:
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pStartTime - start time
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pEndTime - end time
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OUTPUT:
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pdwSeconds - number of elapsed seconds
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RETURN:
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TRUE - Success.
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FALSE - Fatal error.
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*/
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BOOL
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GetDeltaTime(
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SYSTEMTIME * pStartTime,
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SYSTEMTIME * pEndTime,
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DWORD * pdwSeconds
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)
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{
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FILETIME ftStartTime;
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FILETIME ftEndTime;
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LARGE_INTEGER liStartTime;
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LARGE_INTEGER liEndTime;
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LONGLONG llDeltaTime;
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// clear returned seconds
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*pdwSeconds = 0;
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// It is not recommended that you add and subtract values from the SYSTEMTIME
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// structure to obtain relative times. Instead, you should
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// Convert the SYSTEMTIME structures to FILETIME structures.
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EF(SystemTimeToFileTime(pStartTime, &ftStartTime));
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EF(SystemTimeToFileTime(pEndTime, &ftEndTime));
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// Copy the resulting FILETIME structures to LARGE_INTEGER structures.
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liStartTime.LowPart = ftStartTime.dwLowDateTime;
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liStartTime.HighPart = ftStartTime.dwHighDateTime;
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liEndTime.LowPart = ftEndTime.dwLowDateTime;
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liEndTime.HighPart = ftEndTime.dwHighDateTime;
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// Use normal 64-bit arithmetic on the LARGE_INTEGER value.
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llDeltaTime = liEndTime.QuadPart - liStartTime.QuadPart;
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// convert to seconds
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*pdwSeconds = (DWORD) (llDeltaTime / 10000000);
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return TRUE;
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}
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