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  • Committer: msvensson at pilot
  • Date: 2007-04-24 09:11:45 UTC
  • mfrom: (2469.1.106)
  • Revision ID: sp1r-msvensson@pilot.blaudden-20070424091145-10463
Merge pilot.blaudden:/home/msvensson/mysql/my51-m-mysql_upgrade
into  pilot.blaudden:/home/msvensson/mysql/mysql-5.1-maint

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storage/innobase/ut/ut0ut.c
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ibool   ut_always_false = FALSE;
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#ifdef __WIN__
 
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/*********************************************************************
 
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NOTE: The Windows epoch starts from 1601/01/01 whereas the Unix
 
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epoch starts from 1970/1/1. For selection of constant see:
 
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http://support.microsoft.com/kb/167296/ */
 
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#define WIN_TO_UNIX_DELTA_USEC  ((ib_longlong) 11644473600000000ULL)
 
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/*********************************************************************
 
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This is the Windows version of gettimeofday(2).*/
 
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static
 
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int
 
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ut_gettimeofday(
 
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/*============*/
 
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                        /* out: 0 if all OK else -1 */
 
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        struct timeval* tv,     /* out: Values are relative to Unix epoch */
 
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        void*           tz)     /* in: not used */
 
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{
 
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        FILETIME        ft;
 
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        ib_longlong     tm;
 
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        if (!tv) {
 
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                errno = EINVAL;
 
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                return(-1);
 
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        }
 
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        GetSystemTimeAsFileTime(&ft);
 
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        tm = (ib_longlong) ft.dwHighDateTime << 32;
 
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        tm |= ft.dwLowDateTime;
 
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        ut_a(tm >= 0);  /* If tm wraps over to negative, the quotient / 10
 
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                        does not work */
 
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        tm /= 10;       /* Convert from 100 nsec periods to usec */
 
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        /* If we don't convert to the Unix epoch the value for
 
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        struct timeval::tv_sec will overflow.*/
 
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        tm -= WIN_TO_UNIX_DELTA_USEC;
 
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        tv->tv_sec  = (long) (tm / 1000000L);
 
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        tv->tv_usec = (long) (tm % 1000000L);
 
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        return(0);
 
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}
 
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#else
 
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#define ut_gettimeofday         gettimeofday
 
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#endif
 
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#ifndef UNIV_HOTBACKUP
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/*********************************************************************
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Display an SQL identifier.
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        ulint*  sec,    /* out: seconds since the Epoch */
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        ulint*  ms)     /* out: microseconds since the Epoch+*sec */
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{
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#ifdef __WIN__
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        SYSTEMTIME st;
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        GetLocalTime(&st);
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        *sec = (ulint) st.wSecond;
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        *ms  = (ulint) st.wMilliseconds;
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#else
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        struct timeval  tv;
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        gettimeofday(&tv,NULL);
 
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        ut_gettimeofday(&tv, NULL);
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        *sec = (ulint) tv.tv_sec;
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        *ms  = (ulint) tv.tv_usec;
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#endif
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}
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/**************************************************************