| From: | tomas(at)tuxteam(dot)de |
|---|---|
| To: | Heikki Linnakangas <heikki(dot)linnakangas(at)enterprisedb(dot)com> |
| Cc: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Robert Haas <robertmhaas(at)gmail(dot)com>, Greg Smith <greg(at)2ndquadrant(dot)com>, Kevin Grittner <Kevin(dot)Grittner(at)wicourts(dot)gov>, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: CommitFest 2009-07: Yay, Kevin! Thanks, reviewers! |
| Date: | 2010-08-20 06:54:38 |
| Message-ID: | 20100820065438.GA16987@tomas |
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| Lists: | pgsql-hackers |
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On Thu, Aug 19, 2010 at 08:36:09PM +0300, Heikki Linnakangas wrote:
[...]
> Hmm, will need to think about a suitable API for that. The nice thing would
> be that we could implement it using pselect() where available. (And
> reliable - the Linux select() man page says that glibc's pselect() is
> emulated using select(), and suffers from the very same race condition
> pselect() was invented to solve. How awful is that!?)
It is indeed. It seems, though, that from Linux kernel 2.6.16 and glibc
2.4 on, things look better [1]. As a reference, Debian stable (not known
to adventure too far into the present ;-) is libc 2.7 on kernel 2.6.26.
Of course, "enterprise" GNU/Linux distros are said to be even more
conservative...
[1] <http://lwn.net/Articles/176911/>
Regards
- -- tomás
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