Re: calling C from OPM RPG

[Joep Beckeringh <joep@xxxxxxxxxxxxxxxxxxx>]

jared wrote:

> Clearly ILE allows in/out parameter passing in step 'b' (a procedure call
> to a function inside a bound SRVPGM, say).  (Not to be obtuse, but) are
> you saying it's also possible to get the results of step 'b' back up to
> the OPM RPG program, despite the fact that step 'a' is calling out to a
> program written in another language?

ILE procedure calls can pass parameters by value (which is the default in C) or 
by reference (which translates to passing a pointer in C). ILE and OPM program 
calls can only pass parameters by reference (OPM programs did this long before 
they were called OPM).

> That's my current plan.  It'd be nice to know there's a possible
> alternative though, in case they're overly resistant to progress. :)

Sometimes it is better to believe (or make the customer believe) that there is 
no possible alternative :-)

Joep Beckeringh