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Seems reasonable.

Assuming your service programs follow the recommended practice of using ACTGRP(*CALLER). Then it
should be perfectly safe to use the list being returned to the caller by the caller.

As Scott said earlier, the memory would be available till the AG ends.

On the other hand, this might be one of the few places where'd it make sense to use a named activation
group on the service program. You could control the lifetime of the service program AG separately
from the lifetime of the of the AG's used by the callers.


Charles Wilt
Software Engineer
CINTAS Corporation - IT 92B
513.701.1307

wiltc@xxxxxxxxxx


-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx [mailto:rpg400-l-bounces@xxxxxxxxxxxx]
On Behalf Of Lim Hock-Chai
Sent: Tuesday, March 11, 2008 6:00 PM
To: RPG programming on the AS400 / iSeries
Subject: RE: link list returned from service program

To create customer family tree. Our customer master file has customer
number field and parent customer number field. Every now and then, we
need to know all the descendants of a customer number. So..., I created
a export procedure that accept a customer number as a parameter. It
will return the caller a link list that represent the customer's family
tree.




-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx
[mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of Alan Campin
Sent: Tuesday, March 11, 2008 4:48 PM
To: rpg400-l@xxxxxxxxxxxx
Subject: Re: link list returned from service program

<snip>

Lim Hock-Chai wrote:
I'm just curious to know if I've an export procedure that returns a
link list to the caller, how safe is it to continue to use the link
list after the service program is destroyed from the activation group?

</snip>

I have to ask. Why are you returning a linked list from a service
program?

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