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)

       USE MPI
       ! or the older form: 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

Fortran 2008 Syntax

       USE mpi_f08
       MPI_File_get_view(fh, disp, etype, filetype, datarep, ierror)
            TYPE(MPI_File), INTENT(IN) :: fh
            INTEGER(KIND=MPI_OFFSET_KIND), INTENT(OUT) :: disp
            TYPE(MPI_Datatype), INTENT(OUT) :: etype, filetype
            CHARACTER(LEN=*), INTENT(OUT) :: datarep
            INTEGER, OPTIONAL, INTENT(OUT) :: ierror

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.