On Dec 15, 2007, at 08:47 , Kip Macy wrote:

On 12/15/07, James Mansion <[EMAIL PROTECTED]> wrote:
Any idea what the author of libev is on about here (from
http://pod.tst.eu/http://cvs.schmorp.de/libev/ev.pod):

unsigned int ev_recommended_backends ()

   Return the set of all backends compiled into this binary of libev
   and also recommended for this platform. This set is often smaller
   than the one returned by |ev_supported_backends|, as for example
   kqueue is broken on most BSDs and will not be autodetected unless
   you explicitly request it (assuming you know what you are doing).

and

|EVBACKEND_KQUEUE| (value 8, most BSD clones)

Kqueue deserves special mention, as at the time of this writing, it
   was broken on all BSDs except NetBSD (usually it doesn't work with
   anything but sockets and pipes, except on Darwin, where of course
   its completely useless). For this reason its not being
   "autodetected" unless you explicitly specify it explicitly in the
   flags (i.e. using |EVBACKEND_KQUEUE|).

It looks like a decent library, but these comments seem unfortunate.
Does anyone know what the author is concerned about?

James

Actually, until recently it was broken on pipes. We've never received
any PRs to that effect so there is no way of knowing. You'll have
better luck asking the author himself.

  -Kip

How recently? I have been using kqueue with pipes in several programs for the last year or so.

Bert JW Regeer

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