[Mapserver-dev] FastCGI Support in MapServer

[Frank Warmerdam]

Sean Gillies wrote:
> Frank,
> 
> I'd like to help you with the standard stream wrappers.  This could help
> us share the WMS dispatching with mapscript
> 
>   http://mapserver.gis.umn.edu/bugs/show_bug.cgi?id=670
> 
> Would mapservObj be changed to store input and output filehandles, or would
> they be stored in mapObj?

Sean,

In my initial thinking there would be global (essentially hidden)
file handles.  They wouldn't be in the mapservObj or map.  What I *don't*
want to do is have to start passing extra objects into low level places that
never needed anything other than stdio functions before.  So, my theory
was to use the normal stdin, stdout and stderr FILE*'s as "identifiers"
that would be used in the FastCGI jacket functions to so select the appropriate
FastCGI file handles.

Reading over bug 670 it isn't entirely clear to me what sorts of IO you are
needing to virtualize.  Are you wanting to be able to capture "stdout" output
of stuff like the getcapabilities generator within a script to manipulate?

We could indeed look at a more ambitious approach to stdin/stdout/stderr
virtualization with some sort of file objects passed around to control
redirection in a manner that could be map, thread or mapservObj specific,
but this would make what I need to do substantially harder.

Best regards,
-- 
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I set the clouds in motion - turn up   | Frank Warmerdam, warmerdam at pobox.com
light and sound - activate the windows | http://pobox.com/~warmerdam
and watch the world go round - Rush    | Geospatial Programmer for Rent