EV_ADD            210 event/modules/ngx_kqueue_module.c         kev.flags = EV_ADD|EV_ENABLE;
EV_ADD            334 event/modules/ngx_kqueue_module.c     rc = ngx_kqueue_set_event(ev, event, EV_ADD|EV_ENABLE|flags);
EV_ADD            649 os/unix/ngx_freebsd_rfork_thread.c         kev.flags = EV_ADD;