[Mpi3-tools] Bad handle return error code

[Schulz, Martin]

Yes, I agree - the handle is invalid in the session referenced in the argument. Therefore MPI_T_ERR_INVALID_SESSION seems reasonable to me.

Martin


On Jul 25, 2013, at 2:03 PM, Kathryn Mohror <kathryn at llnl.gov>
 wrote:

> Hi everybody,
> 
> I got asked a question from Nathan:
> 
> What should (MPI_T_pvar_read, _write, _reset, etc) return if bad handle is given?
> 
> He gave this example of erroneous code:
> {
>  MPI_T_pvar_session session1, session2;
>  MPI_T_pvar_handle handle;
>  char buffer[256];
>  int count;
> 
>  MPI_T_pvar_session_create (&session1);
>  MPI_T_pvar_session_create (&session2);
> 
>  MPI_T_pvar_handle_alloc (session1, 0, NULL, &handle, &count);
> 
>  MPI_T_pvar_start (session1, handle);
> 
>  /* erroneus statement. should return MPI_T_ERR_INVALID_SESSION or MPI_T_ERR_INVALID_HANDLE */
>  MPI_T_pvar_read (session2, handle, buffer);
> }
> 
> I argue it should return MPI_T_ERR_INVALID_HANDLE since the session is good, it's just that the handle doesn’t match.
> 
> Do you all agree? If so, we should specify it since it's ambiguous. I believe this is an errata item.
> 
> Kathryn
> ______________________________________________________________
> Kathryn Mohror, kathryn at llnl.gov, http://people.llnl.gov/mohror1
> CASC @ Lawrence Livermore National Laboratory, Livermore, CA, USA
> 
> 
> 
> 
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________________________________________________________________________
Martin Schulz, schulzm at llnl.gov, http://people.llnl.gov/schulzm
CASC @ Lawrence Livermore National Laboratory, Livermore, USA