From gregory_r_warnes at groton.pfizer.com  Wed Aug 25 23:08:02 2004
From: gregory_r_warnes at groton.pfizer.com (Warnes, Gregory R)
Date: Wed Aug 25 23:08:19 2004
Subject: [Rd] R as shared library
Message-ID: <D7A3CFD7825BD6119B880002A58F06C20C521A89@groexmb02.pfizer.com>


Jeff,

Does apache use threads?  If it does, I would recommend *not* directly
putting R into the apache server for the simple reason that R is not
thread-safe.

You might find it simpler (and cleaner) to use the RSOAP
(http://rsoap.sf.net) interface to connect R with apache.  I originally
created RSOAP to get allow me to connect the ZOPE web application system's
web server to R.

-Greg

> -----Original Message-----
> From: r-devel-bounces@stat.math.ethz.ch
> [mailto:r-devel-bounces@stat.math.ethz.ch]On Behalf Of Jeffrey Horner
> Sent: Friday, August 20, 2004 3:17 PM
> To: Byron Ellis
> Cc: r-devel@stat.math.ethz.ch
> Subject: Re: [Rd] R as shared library
> 
> 
> Byron Ellis wrote:
> > Building the callbacks is possible. Basically, you need to 
> construct a 
> > fake DllInfo object for Apache and then use 
> R_registerRoutines to attach 
> > the callbacks to R as it if were a normal R package registering its 
> > routines.
> > 
> > I might have a simple example of this lying around, I'll 
> see if I can 
> > find it (especially since it seems I'll be needing it 
> myself soon :-))
> 
> Yes. I thought about that, but that solution may break on future R 
> releases and may hinder porting to other platforms outside of 
> the UNIX 
> family. I'm going to try Duncan's suggestion of a third dll 
> which will 
> install like a traditional R package.
> 
> -- 
> Jeffrey Horner       Computer Systems Analyst         School 
> of Medicine
> 615-322-8606         Department of Biostatistics   Vanderbilt 
> University
> 
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> 


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[Rd] R as shared library
Warnes, Gregory R