[Mpi-forum] how to get MPI::Exception behavior from C bindings?

[Bronis R. de Supinski]

What do they set as the error handler? It is not clear
to me that this code actually does anything...

On Tue, 1 Nov 2011, Jeff Hammond wrote:

> Can someone explain how one can migrate (backwards) from the C++ to
> the C bindings if they currently use MPI::Exception in a try-catch
> block like this:
>
> ===================================
>        try {
>            ((ThreadBase*)(self))->run();
>        }
>        catch (const MPI::Exception& e) {
>            error("caught an MPI exception");
>        }
> ===================================
>
> This is taken from MADNESS, btw.
>
> I think it is only fair for those who want to kill the C++ bindings to
> provide a clear description of how this will not break existing codes
> that use C++ bindings.  Clearly, many things, e.g. MPI::BYTE ->
> MPI_BYTE, are trivial, but I see error handling as being fundamentally
> nontrivial.
>
> Thanks,
>
> Jeff
>
> -- 
> Jeff Hammond
> Argonne Leadership Computing Facility
> University of Chicago Computation Institute
> jhammond at alcf.anl.gov / (630) 252-5381
> http://www.linkedin.com/in/jeffhammond
> https://wiki.alcf.anl.gov/index.php/User:Jhammond
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