Hello Chet, hello Felix, hello all!
> > Bash Version: 5.0
> > Patch Level: 16
> > Release Status: release
> >
> > Description:
> > Integer part of $EPOCHREALTIME could increase more than 8000
> > microseconds before $EPOCHSECONDS
>
> It's the difference between time() and gettimeofday().
I didn't believe it ;-) but running
time_gettimeofday.c:
====================
#include <time.h>
#include <sys/time.h>
#include <stdio.h>
int main(int argc, char *argv[]) {
struct timeval tv;
time_t t;
struct timespec sleep;
sleep.tv_sec = 0;
sleep.tv_nsec = 1000000;
for (int i=0; i<1001; i++) {
gettimeofday(&tv, NULL);
t = time(NULL);
printf("%d.%.6d %d %d\n", tv.tv_sec, tv.tv_usec, t, tv.tv_sec-t);
nanosleep( &sleep, NULL );
}
return 0;
}
with
gcc -o time_gettimeofday time_gettimeofday.c && ./time_gettimeofday |
egrep '\.(00|99)
shows it is right...
Thanks and best regards,
Martin
