Re: When does manually allocated memory get released? -- RPG400-L

Bryce,

You may want to consider moving your cleanup code into a
"destructor/exit" procedure that you can have called when the
activation group ends by registering it with the Register Activation
Group Exit Procedure (CEE4RAGE) API...

You can also consider the use of the Normal End (CEETREC) API to end
your activation group.

That way, you're always doing clean up the same way for both normal
and abnormal endings...

Lastly, here's an interesting take on the idea that uses a small C++
module to invoke RPG entry/exit procedures..
http://systeminetwork.com/node/26462

HTH,
Charles Wilt

On Fri, Oct 8, 2010 at 8:21 AM, Bryce Martin <BMartin@xxxxxxxxxxxx> wrote:

Scott and company,
Thank you all for verifying my understanding of how it works. I do plan
on doing the %dealloc myself, I was just wondering for the sake of testing
purposes before I have all my safe guards in place. I'm doing some proof
of concept stuff right now so I didn't really want to worry about trying
to catch every array index or decimal data error. If the program bombs
the AG will be destroyed, if it ends normally then the %dealloc will
happen. So I'm safe, me thinks :)

Thanks
Bryce Martin
Programmer/Analyst I
570-546-4777

"Schmidt, Mihael" <Mihael.Schmidt@xxxxxxxxxxx>
Sent by: rpg400-l-bounces@xxxxxxxxxxxx
10/08/2010 03:48 AM
Please respond to
RPG programming on the IBM i / System i <rpg400-l@xxxxxxxxxxxx>

To
RPG programming on the IBM i / System i <rpg400-l@xxxxxxxxxxxx>
cc

Subject
RE: When does manually allocated memory get released?

End of ACTGRP or end of job will also free any allocated heap storage as
heap storage is an activation group-level resource.

Mihael

-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx [mailto:rpg400-l-bounces@xxxxxxxxxxxx]
On Behalf Of dieter.bender@xxxxxxxxxxxx
Sent: Friday, October 08, 2010 8:08 AM
To: RPG programming on the IBM i / System i
Subject: Re: When does manually allocated memory get released?

good practice would be to release the memory by your own, to avoid to
shrink
the heap space. End of ACTGRP will destroy all pointers in your static
allocated storage, but I would suspect, that there is no "garbage
collector"
to reclaim the heap storage.

D*B

--------------------------------------------------
From: "Bryce Martin" <BMartin@xxxxxxxxxxxx>
Sent: Thursday, October 07, 2010 10:02 PM
To: "RPG programming on the IBM i / System i" <rpg400-l@xxxxxxxxxxxx>
Subject: When does manually allocated memory get released?

List Experts...
I'm currently using a pointer based array and manually
allocating/reallocating space for the array. This program runs in a

named

activation group. If I don't manually deallocate (maybe due to an
uncaught error), does the memory get release when the AG is destroyed or
when the job ends? I'm guessing its when the AG is destroyed, but I'd
like to make sure.

Thanks
Bryce Martin
Programmer/Analyst I
570-546-4777
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