static void set_alarm (void) { if (atimers) { EMACS_TIME now, timestamp; #ifdef HAVE_SETITIMER struct itimerval it; #endif /* Determine s/us till the next timer is ripe. */ EMACS_GET_TIME (now); EMACS_SUB_TIME (timestamp, atimers->expiration, now); #ifdef HAVE_SETITIMER /* Don't set the interval to 0; this disables the timer. */ if (EMACS_TIME_LE (atimers->expiration, now)) { EMACS_SET_SECS (timestamp, 0); EMACS_SET_USECS (timestamp, 1000); } memset (&it, 0, sizeof it); it.it_value = timestamp; setitimer (ITIMER_REAL, &it, 0); #else /* not HAVE_SETITIMER */ alarm (max (EMACS_SECS (timestamp), 1)); #endif /* not HAVE_SETITIMER */ } }
char * get_time () { if (watch_not_started) exit (EXIT_FAILURE); /* call reset_watch first ! */ EMACS_GET_TIME (TV2); EMACS_SUB_TIME (TV2, TV2, TV1); sprintf (time_string, "%lu.%06lu", (unsigned long)EMACS_SECS (TV2), (unsigned long)EMACS_USECS (TV2)); return time_string; }
int xg_select (int max_fds, SELECT_TYPE *rfds, SELECT_TYPE *wfds, SELECT_TYPE *efds, EMACS_TIME *timeout) { SELECT_TYPE all_rfds, all_wfds; EMACS_TIME tmo, *tmop = timeout; GMainContext *context = g_main_context_default (); int have_wfds = wfds != NULL; int n_gfds = 0, our_tmo = 0, retval = 0, our_fds = 0; int i, nfds, tmo_in_millisec; if (rfds) memcpy (&all_rfds, rfds, sizeof (all_rfds)); else FD_ZERO (&all_rfds); if (wfds) memcpy (&all_wfds, wfds, sizeof (all_rfds)); else FD_ZERO (&all_wfds); /* Update event sources in GLib. */ g_main_context_pending (context); do { if (n_gfds > gfds_size) { while (n_gfds > gfds_size) gfds_size *= 2; xfree (gfds); gfds = xmalloc (sizeof (*gfds) * gfds_size); } n_gfds = g_main_context_query (context, G_PRIORITY_LOW, &tmo_in_millisec, gfds, gfds_size); } while (n_gfds > gfds_size); for (i = 0; i < n_gfds; ++i) { if (gfds[i].events & G_IO_IN) { FD_SET (gfds[i].fd, &all_rfds); if (gfds[i].fd > max_fds) max_fds = gfds[i].fd; } if (gfds[i].events & G_IO_OUT) { FD_SET (gfds[i].fd, &all_wfds); if (gfds[i].fd > max_fds) max_fds = gfds[i].fd; have_wfds = 1; } } if (tmo_in_millisec >= 0) { EMACS_SET_SECS_USECS (tmo, tmo_in_millisec/1000, 1000 * (tmo_in_millisec % 1000)); if (!timeout) our_tmo = 1; else { EMACS_TIME difference; EMACS_SUB_TIME (difference, tmo, *timeout); if (EMACS_TIME_NEG_P (difference)) our_tmo = 1; } if (our_tmo) tmop = &tmo; } nfds = select (max_fds+1, &all_rfds, have_wfds ? &all_wfds : NULL, efds, tmop); if (nfds < 0) retval = nfds; else if (nfds > 0) { for (i = 0; i < max_fds+1; ++i) { if (FD_ISSET (i, &all_rfds)) { if (rfds && FD_ISSET (i, rfds)) ++retval; else ++our_fds; } else if (rfds) FD_CLR (i, rfds); if (have_wfds && FD_ISSET (i, &all_wfds)) { if (wfds && FD_ISSET (i, wfds)) ++retval; else ++our_fds; } else if (wfds) FD_CLR (i, wfds); if (efds && FD_ISSET (i, efds)) ++retval; } } if (our_fds > 0 || (nfds == 0 && our_tmo)) { /* If Gtk+ is in use eventually gtk_main_iteration will be called, unless retval is zero. */ #ifdef USE_GTK if (retval == 0) #endif while (g_main_context_pending (context)) g_main_context_dispatch (context); /* To not have to recalculate timeout, return like this. */ if (retval == 0) { retval = -1; errno = EINTR; } } return retval; }