Re: Do we need a ShmList implementation?

Kevin Grittner <kevin.grittner@wicourts.gov>

From: "Kevin Grittner" <Kevin.Grittner@wicourts.gov>
To: "Simon Riggs" <simon@2ndQuadrant.com>, "Heikki Linnakangas" <heikki.linnakangas@enterprisedb.com>
Cc: <pgsql-hackers@postgresql.org>
Date: 2010-09-20T16:25:34Z
Lists: pgsql-hackers
Simon Riggs <simon@2ndQuadrant.com> wrote:
 
> My understanding is that we used to have that and it was removed
> for the reasons Heikki states. There are still vestigial bits
> still in code.
> 
> Not exactly impressed with the SHM_QUEUE stuff though, so I
> appreciate the sentiment that Kevin expresses.
 
So, if I just allocated a fixed memory space to provide an API
similar to my previous post, does that sound reasonable to you?  For
the record, my intention would be to hide the SHM_QUEUE structures
in this API -- an entry would be just the structure you're
interested in working with.  If practical, I would prefer for
ShmList to be a pointer to an opaque structure; users of this
shouldn't really be exposed to or depend upon the implementation.
 
-Kevin