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(gettimeofday, init_gettimeofday, daylight, gmtoffset): Undo previous change.

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(init_environment): No need to call tzset and init_gettimeofday,
since `main' now does that for us.
(gettimeofday): Ignore tzp; it's obsolescent.
(init_gettimeofday): Invoke tzset first.
This commit is contained in:
Paul Eggert 1995-09-20 03:26:43 +00:00
parent afd9831b8d
commit 70b13a6cc9
1 changed files with 36 additions and 5 deletions
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41
src/msdos.c
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@ -1415,7 +1415,10 @@ internal_terminal_init ()
/* When time zones are set from Ms-Dos too may C-libraries are playing
tricks with time values. We solve this by defining our own version
of `gettimeofday' bypassing GO32. */
of `gettimeofday' bypassing GO32. Our version needs to be initialized
once and after each call to `tzset' with TZ changed. */
static int daylight, gmtoffset;
int
gettimeofday (struct timeval *tp, struct timezone *tzp)
@ -1423,16 +1426,44 @@ gettimeofday (struct timeval *tp, struct timezone *tzp)
if (tp)
{
struct time t;
struct date d;
struct tm tmrec;
gettime (&t);
tp->tv_sec = time (NULL);
/* If tp->tv_sec%60 != t.ti_sec, the seconds counter turned over
between the call to `gettime' and the call to `time'. */
tp->tv_usec = tp->tv_sec%60 != t.ti_sec ? 0 : t.ti_hund * (1000000/100);
/* If midnight occurs here, the results can be incorrect. */
getdate (&d);
tmrec.tm_year = d.da_year - 1900;
tmrec.tm_mon = d.da_mon - 1;
tmrec.tm_mday = d.da_day;
tmrec.tm_hour = t.ti_hour;
tmrec.tm_min = t.ti_min;
tmrec.tm_sec = t.ti_sec;
tmrec.tm_gmtoff = gmtoffset;
tmrec.tm_isdst = daylight;
tp->tv_sec = mktime (&tmrec);
tp->tv_usec = t.ti_hund * (1000000 / 100);
}
/* Ignore tzp; it's obsolescent. */
return 0;
}
void
init_gettimeofday ()
{
time_t ltm, gtm;
struct tm *lstm;
#undef tzset
extern void tzset (void);
tzset ();
daylight = 0;
gmtoffset = 0;
ltm = gtm = time (NULL);
ltm = mktime (lstm = localtime (&ltm));
gtm = mktime (gmtime (&gtm));
daylight = lstm->tm_isdst;
gmtoffset = (int)(gtm - ltm) / 60;
}
/* These must be global. */
static _go32_dpmi_seginfo ctrl_break_vector;