RE: Crazy little web project

[Eduard Sluis <eduard@xxxxxxxxxxxxxxxxxxxxxxx>]

In the Scott Klement FTPAPI tool there is a nice way to have workerjobs
prestarted waiting on serving requests. All natural understandable RPG.
You can do is yourself in just a few day's, bloody fast and rocksolid.

Regards,
Eduard.

--- Steve Richter <srichter@xxxxxxxxxxxxx> wrote:
> 
> 
> -----Original Message-----
> From: rpg400-l-bounces@xxxxxxxxxxxx
> [mailto:rpg400-l-bounces@xxxxxxxxxxxx]On Behalf Of Hans Boldt
> Sent: Tuesday, July 20, 2004 9:07 AM
> To: rpg400-l@xxxxxxxxxxxx
> Subject: Re: Crazy little web project
> 
> >But an HTTP server in RPG? Well, one bottleneck you'll likely run
> into
> >is the fact that RPG has limitations running in a threaded
> environment.
> >RPG programs are generally non-reentrant. The best you can do is
> code
> >the THREAD(*SERIALIZE) option which ensures that a module is active
> in
> >only one thread at one time. Threading is normally needed in a
> server
> >program to give speedy response to each request.
> 
> An even quicker way to shuttle the execution of the http request to a
> worker
> thread is to have a set of prestarted worker jobs running on the
> system.
> Then release either a mutex or LOCKSL type lock to signal the worker
> job to
> start running the request string that has been posted to a preset
> location
> in a shared user space.
> 
> Of course, to handle the sort of syncronization required when running
> multiple threads or jobs, you have to have a language that supports
> data
> structure constructors and destructors ( you use the destructor to
> auto
> release your mutex locks.  The constructor is used to auto acquire
> the
> lock. ).  Since neither C or RPG provide that support, both will
> eventually
> come up short in this sort of a project.  Better to use C++.
> 
> -Steve
> 
> 
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