Re: genSub subroutine compilation and ioc access

[Matthieu Bec <mbec@gemini.edu>]

... this is properly documented in the manual.

a sample epicsExportRegistrar might look like:

static registryFunctionRef myGensubLibRef[] = {
   {"xxx", (REGISTRYFUNCTION) my_xxx},
   {"yyy", (REGISTRYFUNCTION) my_yyy}
};
static void myGensubLibRegistrar (void)
{
   registryFunctionRefAdd (myGensubLibRef,
                           NELEMENTS (myGensubLibRef));
}

epicsExportRegistrar (myGensubLibRegistrar);


simpler convenience macro (where names match) makes it:

   epicsRegisterFunction(xxx);

Matthieu




Matthieu Bec wrote:
> Hi Emmanuel,
>
> yes you need to export your gensub's INAM/SNAM - There might be other 
> ways to do this but this work. I rarely use the INAM, that can be left 
> blank.
> say SNAM=xxx
> in C source, do: epicsExportRegistrar(xxx)
> in dbd include, do: registrar("xxx")
>
> the application developper's guide has more details, I remember 
> convenience macros(?) to epicsExportRegistrar
>
> Matthieu
>
>
> Emmanuel Mayssat wrote:
> > Hello,
> >
> > I recently decided to have a look at genSub.
> > I want to calculate the standard deviation of a waveform of samples.
> >
> > At this point, I am just trying have genSub work with a simple formulas.
> > Where do you compile the subroutines?
> > How do you make them available in the ioc? Should they be registar'ed?
> > The genSub doc is not really clear on that matter.
> >
> > I compiled the subroutines (as is) in the device support library.
> > I liked that library to the ioc binary.
> > Obvisouly that is not enough for the genSub record to find them.
> > What am I missing?
> >
> > Dpes anybody have a simple genSub record to send my way ?
> >
> > Regards,
> > --
> > Emmanuel
> > 650/793-0626


--
Matthieu Bec              Gemini Observatory
Tel: +56 51 205785        c/o AURA, Casilla 603
Fax: +56 51 205650        La Serena, Chile