struct atimer *
start_atimer (enum atimer_type type, EMACS_TIME timestamp, atimer_callback fn,
void *client_data)
{
struct atimer *t;
/* Round TIME up to the next full second if we don't have
itimers. */
#ifndef HAVE_SETITIMER
if (EMACS_NSECS (timestamp) != 0
&& EMACS_SECS (timestamp) < TYPE_MAXIMUM (time_t))
timestamp = make_emacs_time (EMACS_SECS (timestamp) + 1, 0);
#endif /* not HAVE_SETITIMER */
/* Get an atimer structure from the free-list, or allocate
a new one. */
if (free_atimers)
{
t = free_atimers;
free_atimers = t->next;
}
else
t = xmalloc (sizeof *t);
/* Fill the atimer structure. */
memset (t, 0, sizeof *t);
t->type = type;
t->fn = fn;
t->client_data = client_data;
block_atimers ();
/* Compute the timer's expiration time. */
switch (type)
{
case ATIMER_ABSOLUTE:
t->expiration = timestamp;
break;
case ATIMER_RELATIVE:
t->expiration = add_emacs_time (current_emacs_time (), timestamp);
break;
case ATIMER_CONTINUOUS:
t->expiration = add_emacs_time (current_emacs_time (), timestamp);
t->interval = timestamp;
break;
}
/* Insert the timer in the list of active atimers. */
schedule_atimer (t);
unblock_atimers ();
/* Arrange for a SIGALRM at the time the next atimer is ripe. */
set_alarm ();
return t;
}
static char *
get_time (void)
{
EMACS_TIME TV2 = sub_emacs_time (current_emacs_time (), TV1);
uintmax_t s = EMACS_SECS (TV2);
int ns = EMACS_NSECS (TV2);
if (watch_not_started)
exit (EXIT_FAILURE); /* call reset_watch first ! */
sprintf (time_string, "%"PRIuMAX".%0*d", s, LOG10_EMACS_TIME_RESOLUTION, ns);
return time_string;
}