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  1.  Home
  2. RPG400-L
  3. January 2006

Re: Service programs

Sorry for this really dumb question, but it is something I don't know and would like to know.
Lets say this service program includes 42 various subprocedures. Lets say one of our main programs uses this service program because it needs subprocedure4 and subprocedure12. Is there any performance penalty paid because we have 40 other unused subprocedures bound into our program? Would we get performance improvements if we divided our 42 subprocedures into 5 or even 8 service programs? 

Bob Cozzi wrote:

Thomas,

You can read/write/update files in service programs.
Service programs are nothing more than a collection of subprocedures and
fields that are isolated in an independent object for greater access.
Simply use NOMAIN as a keyword on the Header specification in the source
members you use to create the service program. Do not use mainline-Calcs in
the service program source members. Other than that, it is effectively
similar to writing RPGIV application programs. The only difference is you've
moved the subprocedure out to a secondary source member and compiled them
separately.


-Bob Cozzi
www.RPGxTools.com
RPG xTools - Enjoy programming again.


-----Original Message-----
From: rpg400-l-bounces+cozzi=rpgiv.com@xxxxxxxxxxxx
[mailto:rpg400-l-bounces+cozzi=rpgiv.com@xxxxxxxxxxxx] On Behalf Of thomas
Sent: Friday, January 27, 2006 4:47 PM
To: rpg400-l@xxxxxxxxxxxx
Subject: Service programs

 does anyone have a simple service program I could look at to start to
understand them.  A list of rules of what has to happen would help.  Have
figured out that you cannot read and write files in a SERVICE program. Or at
least I think that is right. Thomas Burrows

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