| From: | Heikki Linnakangas <heikki(dot)linnakangas(at)enterprisedb(dot)com> |
|---|---|
| To: | Peter Geoghegan <peter(at)2ndquadrant(dot)com> |
| Cc: | Fujii Masao <masao(dot)fujii(at)gmail(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: Process wakeups when idle and power consumption |
| Date: | 2011-05-10 16:43:06 |
| Message-ID: | 4DC96B1A.5070604@enterprisedb.com |
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| Lists: | pgsql-hackers |
On 10.05.2011 14:39, Peter Geoghegan wrote:
> Attached is win32 implementation of the "named pipe trick".
>
> It consists of a Visual Studio 2008 solution that contains two
> projects, named_pipe_trick (which represents the postmaster) and
> auxiliary_backend (which represents each auxiliary process). I split
> the solution into two projects/programs because Windows lacks fork()
> to make it all happen with a single program.
>
> Thoughts? Once I have some buy-in, I'd like to write a patch for the
> latch code that incorporates monitoring the postmaster using the named
> pipe trick (for both unix_latch.c and win32_latch.c), plus Heikki's
> suggestions.
It should be an anonymous pipe that's inherited by the child process by
rather than a named pipe. Otherwise seems fine to me, as far as this
proof of concept program goes.
--
Heikki Linnakangas
EnterpriseDB http://www.enterprisedb.com
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