Developers of Sympa

[Kazuo Moriwaka <address@concealed>]

Hello, 

I read tools::lock() and tools::unlock(). 
They uses flock() function which doesn't support lock over NFS. 
I'm thinking about replacing flock() by LockFile::Simple (this module
support locks for non-NFS and NFS by argument).

It maybe need to create a new configuration option (maybe 'lock =
flock/nfs') to select the locking method to avoid performance problems
in non-NFS filesystems.

How about it?

From: Olivier Salaün - CRU <address@concealed>
Subject: Re: [sympa-dev] Is a lock need for /stats ?
Date: Mon, 20 Jun 2005 11:50:41 +0200

> You are right, we don't use locks while writing the stats file, mainly 
> because Sympa has evolved and it was not initially designed initially 
> for concurent access.
> 
> Currenlty sympa uses locks only while  synchronizing members with 
> external datasource because it can take some time. If we were adding 
> lock magement for stats and config, we would probably use the same 
> subroutines (tools::lock() and tools::unlock())
> 
> Kazuo Moriwaka wrote:
> 
> >I want to use sympa on the NFS system.  I'm not clear about sympa's 
> >internal structures, yet.
> >I read  savestats() function in List.pm.  I cannot find any lock for 
> >writing '/stats' file.
> >
> >Is this OK? Or it should be fixed with LockFile::Simple module or any 
> >locking system?
> >  
> >
>