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Re: Contrib -- PostgreSQL shared variables

From: Rick Gigger <rick(at)alpinenetworking(dot)com>
To: pgsql(at)mohawksoft(dot)com
Cc: pgsql-patches(at)postgresql(dot)org, pgsql-hackers(at)postgresql(dot)org
Subject: Re: Contrib -- PostgreSQL shared variables
Date: 2004-08-25 21:22:30
Message-ID: 412D0316.7060600@alpinenetworking.com (view raw or flat)
Thread:
Lists: pgsql-hackerspgsql-patches
LockShared('name');

pgsql(at)mohawksoft(dot)com wrote:
> This is a first pass on a simple shared memory variable system for
> PostgreSQL. I would appriciate anyone interested in this functionality to
> rip it apart.
> 
> It basically adds this functionality:
> 
> SetShared('name', value);
> GetSharedInt('name');
> SetSharedText('name);
> RemovedShared('name');
> 
> I also added two extra functions that are sort of a kludge, but could be
> very helpful.
> 
> AddSharedInt('name', value);
> SubSharedInt('name', value);
> 
> These add or subtect the 'value' from the variable and return the result.
> 
> 
> ------------------------------------------------------------------------
> 
> 
> ---------------------------(end of broadcast)---------------------------
> TIP 9: the planner will ignore your desire to choose an index scan if your
>       joining column's datatypes do not match

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