NAME

       MPI_Comm_create_errhandler    -   Creates  an  error  handler  that  can  be  attached  to
       communicators.

SYNTAX

C Syntax

       #include <mpi.h>
       int MPI_Comm_create_errhandler(MPI_Comm_errhandler_function *function,
            MPI_Errhandler *errhandler)

Fortran Syntax

       INCLUDE 'mpif.h'
       MPI_COMM_CREATE_ERRHANDLER(FUNCTION, ERRHANDLER, IERROR)
            EXTERNAL  FUNCTION
            INTEGER   ERRHANDLER, IERROR

C++ Syntax

       #include <mpi.h>
       static MPI::Errhandler
            MPI::Comm::Create_errhandler(MPI::Comm::Errhandler_function*
            function)

DEPRECATED TYPE NAME NOTE

       MPI-2.2 deprecated the MPI_Comm_errhandler_fn and MPI::Comm::Errhandler_fn types in  favor
       of  MPI_Comm_errhandler_function  and  MPI::Comm::Errhandler_function, respectively.  Open
       MPI supports both names (indeed, the _fn names are typedefs to the _function names).

INPUT PARAMETER

       function  User-defined error handling procedure (function).

OUTPUT PARAMETERS

       errhandler
                 MPI error handler (handle).

       IERROR    Fortran only: Error status (integer).

DESCRIPTION

       MPI_Comm_create_errhandler creates an error handler that can be attached to communicators.
       This function is identical to MPI_Errhandler_create, the use of which is deprecated.

       In C, the user routine should be a function of type MPI_Comm_errhandler_function, which is
       defined as

           typedef void MPI_Comm_errhandler_function(MPI_Comm *, int *, ...);

       The first argument is the communicator in use. The second is the error code to be returned
       by  the MPI routine that raised the error. This typedef replaces MPI_Handler_function, the
       use of which is deprecated.

       In Fortran, the user routine should be of this form:

           SUBROUTINE COMM_ERRHANDLER_FUNCTION(COMM, ERROR_CODE, ...)
               INTEGER COMM, ERROR_CODE

       In C++, the user routine should be of this form:

           typedef void MPI::Comm::Errhandler_function(MPI_Comm &, int *, ...);

ERRORS

       Almost all MPI routines return an error value; C routines as the value of the function and
       Fortran  routines in the last argument. C++ functions do not return errors. If the default
       error handler is set to MPI::ERRORS_THROW_EXCEPTIONS, then  on  error  the  C++  exception
       mechanism will be used to throw an MPI::Exception object.

       Before  the  error value is returned, the current MPI error handler is called. By default,
       this error handler aborts the MPI job, except for I/O function errors. The  error  handler
       may    be   changed   with   MPI_Comm_set_errhandler;   the   predefined   error   handler
       MPI_ERRORS_RETURN may be used to cause error values to be returned. Note that MPI does not
       guarantee that an MPI program can continue past an error.