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104 lines
2.3 KiB
104 lines
2.3 KiB
/***
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*systime.c - _getsystime and _setsystime
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*
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* Copyright (c) 1991-1992, Microsoft Corporation. All rights reserved.
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*
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*Purpose:
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* defines _getsystime() and _setsystime()
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*
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*Revision History:
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* 08-22-91 BWM Wrote module.
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* 05-19-92 DJM ifndef for POSIX build.
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* 09-25-92 SKS Use SetLocalTime(), not SetSystemTime().
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* Fix bug: daylight flag must be initialized to -1.
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* Replace C++ comments with C-style comments
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*
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*******************************************************************************/
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#ifndef _POSIX_
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#include <cruntime.h>
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#include <oscalls.h>
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#include <time.h>
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#if !defined(_WIN32_)
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#error ERROR - ONLY WIN32 TARGET SUPPORTED!
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#endif
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/***
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*unsigned _getsystime(timestruc, milliseconds) - Get current system time
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*
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*Purpose:
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*
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*Entry:
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struct tm * ptm - time structure
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*
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*Exit:
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* milliseconds of current time
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*
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*Exceptions:
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*
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*******************************************************************************/
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unsigned _CALLTYPE1 _getsystime(struct tm * ptm)
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{
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SYSTEMTIME st;
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GetLocalTime(&st);
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ptm->tm_isdst = -1; /* mktime() computes whether this is */
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/* during Standard or Daylight time. */
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ptm->tm_sec = (int)st.wSecond;
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ptm->tm_min = (int)st.wMinute;
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ptm->tm_hour = (int)st.wHour;
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ptm->tm_mday = (int)st.wDay;
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ptm->tm_mon = (int)st.wMonth - 1;
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ptm->tm_year = (int)st.wYear - 1900;
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ptm->tm_wday = (int)st.wDayOfWeek;
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/* Normalize uninitialized fields */
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mktime(ptm);
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return (st.wMilliseconds);
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}
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/***
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*unsigned _setsystime(timestruc, milliseconds) - Set new system time
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*
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*Purpose:
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*
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*Entry:
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* struct tm * ptm - time structure
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* unsigned milliseconds - milliseconds of current time
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*
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*Exit:
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* 0 if succeeds
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* system error if fails
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*
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*Exceptions:
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*
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*******************************************************************************/
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unsigned _CALLTYPE1 _setsystime(struct tm * ptm, unsigned uMilliseconds)
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{
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SYSTEMTIME st;
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/* Normalize uninitialized fields */
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mktime(ptm);
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st.wYear = (WORD)(ptm->tm_year + 1900);
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st.wMonth = (WORD)(ptm->tm_mon + 1);
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st.wDay = (WORD)ptm->tm_mday;
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st.wHour = (WORD)(ptm->tm_hour);
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st.wMinute = (WORD)ptm->tm_min;
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st.wSecond = (WORD)ptm->tm_sec;
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st.wMilliseconds = (WORD)uMilliseconds;
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if (!SetLocalTime(&st)) {
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return ((int)GetLastError());
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}
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return (0);
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}
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#endif /* _POSIX_ */
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