Re: ILE 100.5

[Joep Beckeringh <joep@xxxxxxxxxxxxxxxxxxx>]

Chris Wolcott wrote:

>  
> If I understand ACTGRPs correctly:
>
> *CALLER runs in whatever AG the calling routine is in.  (Even if it is
> an OPM program.)

Yup.

> *NEW      Starts a new ACTGRP that goes away when the object does.
> (Correct?)

Sort of. The activation group ends when the program that started it ends (that's 
probably what you meant).

> <NAMED> Starts a new ACTGRP named <x> (if required) that goes away when
> the JOB ends.

Or when you use RCLACTGRP(x) or RCLACTGRP(*ELIGIBLE) and the activation group is 
not active anymore.

> (Your session, if interactive.)  This can be a source of
> confusion, when you KNOW you've made the change yet the code still errs
> like it used to. . .
>
> ===
>
> To reclaim ane ACTGRP, use RCLACTGRP <name>/*ELIGIBLE.  *ELIGIBLE will
> reclaim all ACTGRPs that are no longer used.
>
> ===
>
> You can only use *CALLER if the called routine is a standalone bound
> program, NO *SRVPGM calls.  (I guess because of the possible link to an
> OPM environment.)

I'm not sure what you are trying to say here. Any ILE program or service program 
can be ACTGRP(*CALLER). Any ILE program can be called from an OPM program.

> *NEW is similair to the OPM environment, except that it is ILE.  (Doh!)
> I.E. persistence of objects, initializations, etc.

Hm. Windows is just like Apple, except that it is Microsoft. What do you mean by 
this? In ILE many things work different from OPM; doesn't matter whether the 
activation group is named or *NEW.

> If the program is used once, it is a wash over *NEW or <named>.  The
> more times it is called in a job, the more you should lean towards
> <named>.  

If you only have one program, that is right. But if you have more programs, they 
can use the same named activation group, that will have to be initialised only 
once in a job. With *NEW a new activation group will be created for every program.

> Depending on how the SRVPGM is created and how the routine termintates,
> you may or may not get an initialized storage area with each call.

Which storage are you referring to? Global storage, automatic storage, static 
storage? Global and static storage will keep their values between calls; 
automatic storage (non-static local variables) will be initialised on each call.

Joep Beckeringh