MPI_Datarep_conversion_function callback function

This function is a place holder for the user-defind functions to converts from file data representation to native representation and vice versa.

Syntax

int MPI_Datarep_conversion_function(
       _Inout_ void *userbuf,
       MPI_Datatype datatype,
       int          count,
       _Inout_ void *filebuf,
       MPI_Offset   position,
  _In_ void         *extra_state
);

Parameters

• userbuf
  Native buffer.

• datatype
  Datatype of the elements.

• count
  Number of elements.

• filebuf
  File buffer.

• position
  Position in the read buffer.

• extra_state [in]
  Extra state.

Return value

The conversion functions should return an error code. If the returned error code has a value other than MPI_SUCCESS, the implementation will raise an error in the class MPI_ERR_CONVERSION.

Fortran

    SUBROUTINE DATAREP_CONVERSION_FUNCTION(USERBUF, DATATYPE, COUNT, FILEBUF,
                POSITION, EXTRA_STATE, IERROR)
        <TYPE> USERBUF(*), FILEBUF(*)
        INTEGER COUNT, DATATYPE, IERROR
        INTEGER(KIND=MPI_OFFSET_KIND) POSITION
        INTEGER(KIND=MPI_ADDRESS_KIND) EXTRA_STATE

Requirements

Product	HPC Pack 2012 MS-MPI Redistributable Package, HPC Pack 2008 R2 MS-MPI Redistributable Package, HPC Pack 2008 MS-MPI Redistributable Package or HPC Pack 2008 Client Utilities
Header	Mpi.h; Mpif.h

See also

MPI Miscellaneous Functions

MPI_Register_datarep