Re: C program for QDFRTVFD API

[Charles Wilt <charles.wilt@xxxxxxxxx>]

Why not change from a C program to an ILE C module?

You'd break your current main() into 2 parts, an init that does the malloc
and a close() that does the free.

Charles

On Wed, Sep 10, 2014 at 5:53 AM, Frank Kolmann <fkolmann@xxxxxxxxx> wrote:

> Hi
>
>
>
> I have coded a C program to get info from the QDFRTVFD API.
>
> It works and successfully retrieves Fields (incl posn and atr) and
> Constants from a DSPF.
>
> It is here. http://wiki.midrange.com/index.php/CQDFRTVFD
>
>
>
> However the way it is coded is very inefficient because I invoke the API
> for every field/constant in the DSPF.
>
> To be more efficient I would need to invoke the API only once and retain
> the API returned data.
>
> I want to keep the API invoke in the called function.
>
> To retain data after a C program ends is , I believe the definition of
> ‘memory leak’, so I cant see how I can call the API within the C program
> and also retain the data after the program ends.
>
> I know how to pass data back to the caller, in fact that is how the field
> information is returned.  However for this I have memory allocated in the
> caller.
> The C program does a  ‘malloc’  and here is where I am lost, as I cannot
> see how to pass back the data in the ‘malloc’.
>
> Any help. TIA.
>
>
> Frank
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