720     const struct event_change *change)  argument
723           if (change->read_change & EV_CHANGE_SIGNAL) {
725                     GET_SIGNAL_SLOT(ctx, &base->sigmap, change->fd, evmap_signal);
729                     GET_IO_SLOT(ctx, &base->io, change->fd, evmap_io);
842           struct event_change *change;  local
854                     change = &changelist->changes[idx];
857                     memset(change, 0, sizeof(struct event_change));
858                     change->fd = fd;
859                     change->old_events = old_events;
861                     change = &changelist->changes[fdinfo->idxplus1 - 1];
862                     EVUTIL_ASSERT(change->fd == fd);
864           return change;
873           struct event_change *change;  local
878           change = event_changelist_get_or_construct(changelist, fd, old, fdinfo);
879           if (!change)
887                     change->read_change = evchange;
889                     change->write_change = evchange;
891                     change->close_change = evchange;
903           struct event_change *change;  local
907           change = event_changelist_get_or_construct(changelist, fd, old, fdinfo);
909           if (!change)
928                     if (!(change->old_events & (EV_READ | EV_SIGNAL)))
929                               change->read_change = 0;
931                               change->read_change = del;
934                     if (!(change->old_events & EV_WRITE))
935                               change->write_change = 0;
937                               change->write_change = del;
940                     if (!(change->old_events & EV_CLOSED))
941                               change->close_change = 0;
943                               change->close_change = del;