Path: utzoo!attcan!uunet!wuarchive!emory!stiatl!mnopltd!neal
From: neal@mnopltd.UUCP
Newsgroups: comp.databases
Subject: PROGRESS HLC question
Message-ID: <135@mnopltd.UUCP>
Date: 27 Oct 90 15:46:49 GMT
Reply-To: gatech!stiatl!mnopltd!neal
Organization: MNOP Ltd., Atlanta, Ga.
Lines: 55
Distribution:


->Hi, I got a question concerning PROGRESS (V5.2I) Host language call:
->
->I'm planning to add some network support (send/rcv data via sockets) to
->my progres, so that I can have a procedure running as a kind of information
->server in the background without having to run progress on the client machines
->itself.
->
->My question now:
->
->I'd like to fork() my pogress server procedd for the handling of the request,
->but I think I might confuse the RDBMS when there are suddenly two processes
->connected. Am I right?
->
->And what happend if I do and exit() inside a HLC function? does the broker
->get confused? Any other restrictions on this?
->
->Are there other HLC functions than those described in the HLC REFERENCE MANUAL
->which make this possible (forking,exiting etc).

Slow down here.  HLC tends to be a pain to work with.   Remember, you are 
wedded to the Progress executable.  You screw up the stack, and the whole show
(including yer database) goes down the tubes.

Have you looked at using the INPUT-OUTPUT THROUGH command?  This lets you set
up a pipe with an external process.   Your progress procedure can read and write
the pipe, as can your C procedure.  However, they are separate processes, which
limits the scope of disaster immensely.


->
->And BTW:
->
->	Does PROGRESS Software have an e-mail address where one can direct
->	questions and comments to? Would be very nice, but they ever publish one.

No.  I have been beating on them about this and expect this to change within a
month.  I will let you know.

->
->regards,
->
->Mathias
->-- 
->Mathias Koerber  | S iemens | Tel: +65 / 7473828-1852       | Fax: +65/7474331
->2 Kallang Sector | N ixdorf | USA: uunet!nixbur!koerber.sin | nerv: koerber.sin
->S'pore 1344      | I nformationssystems | EUnet: koerber.sin@nixpbe
->* Packed with Power, SNIckers really satisfy  (or do theyAsk them gals :-) )*
->

------------------------------------------------------------------------------
Neal Rhodes                       MNOP Ltd                     (404)- 972-5430
President                Lilburn (atlanta) GA 30247             Fax:  978-4741
                             emory!mnopltd!neal 
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