Commit b278e52a authored by Richard M. Stallman's avatar Richard M. Stallman
Browse files

(gettimeofday): New function substituting the library

function of the same name.
(init_gettimeofday): New function.
(init_environment): Call init_gettimeofday after possibly
setting TZ environment variable.
parent 56988bbe
......@@ -739,6 +739,7 @@ init_environment (argc, argv, skip_args)
break;
}
tzset ();
init_gettimeofday ();
}
/* Flash the screen as a substitute for BEEPs. */
......@@ -889,7 +890,59 @@ internal_terminal_init ()
internal_terminal
= (!noninteractive) && term && !strcmp (term, "internal");
}
/* 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. 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)
{
if (tp)
{
struct time t;
struct date d;
struct tm tmrec;
gettime (&t);
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);
}
if (tzp)
{
tzp->tz_minuteswest = gmtoffset;
tzp->tz_dsttime = daylight;
}
return 0;
}
void
init_gettimeofday ()
{
time_t ltm, gtm;
struct tm *lstm;
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;
static _go32_dpmi_registers ctrl_break_regs;
......
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