MPI_File_get_view(3)               Open MPI               MPI_File_get_view(3)



NAME
       MPI_File_get_view - Returns the process's view of data in the file.


SYNTAX
       C Syntax
           #include <mpi.h>
           int MPI_File_get_view(MPI_File fh, MPI_Offset *disp,
                  MPI_Datatype *etype, MPI_Datatype *filetype,
                     char *datarep)

       Fortran Syntax (see FORTRAN 77 NOTES)
           INCLUDE 'mpif.h'
           MPI_FILE_GET_VIEW(FH, DISP, ETYPE,
                   FILETYPE, DATAREP,  IERROR)
             INTEGER FH, ETYPE, FILETYPE, IERROR
             CHARACTER*(*) DATAREP
             INTEGER(KIND=MPI_OFFSET_KIND) DISP


C++ Syntax
       #include <mpi.h>
       void MPI::File::Get_view(MPI::Offset& disp,
            MPI::Datatype& etype,
            MPI::Datatype& filetype, char* datarep) const


INPUT PARAMETER
       fh        File handle (handle).


OUTPUT PARAMETERS
       disp      Displacement (integer).

       etype     Elementary data type (handle).

       filetype  File type (handle). See Restrictions, below.

       datarep   Data representation (string).

       IERROR    Fortran only: Error status (integer).


DESCRIPTION
       The MPI_File_get_view routine returns the process's view of the data in
       the file. The current values of the displacement, etype, and filetype
       are returned in disp, etype, and filetype, respectively.

       The MPI_File_get_view interface allows the user to pass a data-
       representation string via the datarep argument.


FORTRAN 77 NOTES
       The MPI standard prescribes portable Fortran syntax for the DISP
       argument only for Fortran 90.  FORTRAN 77 users may use the non-
       portable syntax.

            INTEGER*MPI_OFFSET_KIND DISP

       where MPI_OFFSET_KIND is a constant defined in mpif.h and gives the
       length of the declared integer in bytes.


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. For MPI I/O function errors, the default error handler is set
       to MPI_ERRORS_RETURN. The error handler may be changed with
       MPI_File_set_errhandler; the predefined error handler
       MPI_ERRORS_ARE_FATAL may be used to make I/O errors fatal. Note that
       MPI does not guarantee that an MPI program can continue past an error.




1.4.1                            Jan 14, 2010             MPI_File_get_view(3)
