542   fd_set *rfds, *wfds, *efds;  in DoLoop()  local
550   if ((wfds = mkfdset()) == NULL) {  in DoLoop()
559     free(wfds);  in DoLoop()
566     zerofdset(wfds);  in DoLoop()
570     descriptor_UpdateSet(&bundle->desc, rfds, wfds, efds, &nfds);  in DoLoop()
591     i = select(nfds, rfds, wfds, efds, NULL);  in DoLoop()
603             if (select(nfds, rfds, wfds, efds, &t) != -1) {  in DoLoop()
608           if (FD_ISSET(i, wfds)) {  in DoLoop()
610             FD_CLR(i, wfds);  in DoLoop()
612             if (select(nfds, rfds, wfds, efds, &t) != -1) {  in DoLoop()
621             if (select(nfds, rfds, wfds, efds, &t) != -1) {  in DoLoop()
663     if (descriptor_IsSet(&bundle->desc, wfds))  in DoLoop()
664       if (descriptor_Write(&bundle->desc, bundle, wfds) <= 0 && nothing_done) {  in DoLoop()