errcode := netpollcheckerr(pd, int32(mode))
	if errcode != pollNoError {
		return errcode
	}
	// As for now only Solaris, illumos, AIX and wasip1 use level-triggered IO.
	if GOOS == "solaris" || GOOS == "illumos" || GOOS == "aix" || GOOS == "wasip1" {
		netpollarm(pd, mode)
	}
	for !netpollblock(pd, int32(mode), false) {
		errcode = netpollcheckerr(pd, int32(mode))
		if errcode != pollNoError {