[Koha-devel] Getting rid of z3950 daemons

[MJ Ray]

On 2003-10-21 09:39:24 +0100 paul POULAIN <paul.poulain at free.fr> wrote:

> that's where we have not the same idea : I think users are happy to 
> see that 
> the query progresses.

Is seeing "Please wait" bugzilla-style really worse than "Still ?? 
requests to go" that we have now? Admins are very unhappy at having to 
run new daemons and I think this will limit koha uptake. Z39.50 is a 
good feature of koha, but its current implementation seems tricky. I 
suspect the daemon may hit ulimits too?

> Apache forks a process/thread to compute the answer
> The process/thread output the results
> The process/thread dies
> Apache sends the results when the process/thread is dead

I think this line is wrong. Apache sends the results as soon as it 
can, without waiting for process to exit.

> Job ended.
> 
> I don't see how to have an asynchronous task here.

I was speaking of the results being gathered asynchronously within the 
process, not the request being asynchronous within the whole system. 
This is so that we can abort when time runs out. I don't think that is 
difficult to do. Perhaps we could even use alarm signals to avoid 
having to write asynchronous Z3950 code.

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