In article <35ao47F4ifd7uU1 / individual.net>,
  Florian Gross <flgr / ccan.de> writes:

> Does anybody know what is wrong with these? Are they not working 
> correctly or will non-blocking IO be deprecated in general?

The non-blocking IO itself is not deprecated.
It may be useful to avoid whole process blocking.
-- 
Tanaka Akira