Skip site navigation (1) Skip section navigation (2)

Re: POSIX shared memory support

From: Chris Marcellino <cmarcellino(at)apple(dot)com>
To: Magnus Hagander <magnus(at)hagander(dot)net>
Cc: pgsql-patches(at)postgresql(dot)org
Subject: Re: POSIX shared memory support
Date: 2007-02-27 10:24:46
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-patches
I believe that all we need is the ID to be constant and unique while  
the postmaster or its associated backends are running. If anything  
from a given generation has the database open, it will remain  
constant before any new process can connect to it successfully. Would  
it be feasible to lookup the ID of an important file in the DataDir?

As far as the POSIX version goes, here is an updated patch. I changed  
it to use the inode/device ID instead of the filename to avoid the  
renaming cases. It also no longer needs the more clunky than  
necessary hash stuff.

Description: application/octet-stream (1007 bytes)
Attachment: netbsd.patch
Description: application/octet-stream (345 bytes)
Attachment: openbsd.patch
Description: application/octet-stream (217 bytes)
Attachment: posix_shmem.c
Description: application/octet-stream (15.0 KB)

In response to

pgsql-patches by date

Next:From: Heikki LinnakangasDate: 2007-02-27 11:03:12
Subject: Re:
Previous:From: Heikki LinnakangasDate: 2007-02-27 09:51:09
Subject: Re: Dead Space Map version 2

Privacy Policy | About PostgreSQL
Copyright © 1996-2017 The PostgreSQL Global Development Group