55 строки
1.7 KiB
Groff
55 строки
1.7 KiB
Groff
.\"Copyright 2006, Sun Microsystems, Inc.
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.\" Copyright (c) 1996 Thinking Machines Corporation
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.TH MPI_File_get_group 3OpenMPI "September 2006" "Open MPI 1.2" " "
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.SH NAME
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\fBMPI_File_get_group\fP \- Returns a duplicate of the process group of a file.
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.SH SYNTAX
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.ft R
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.nf
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C Syntax
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#include <mpi.h>
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int MPI_File_get_group(MPI_File \fIfh\fP, MPI_Group \fI*group\fP)
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Fortran Syntax
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INCLUDE 'mpif.h'
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MPI_FILE_GET_GROUP(\fIFH\fP,\fI GROUP\fP, \fI IERROR\fP)
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INTEGER FH, GROUP, IERROR
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.SH C++ Syntax
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.nf
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#include <mpi.h>
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MPI::Group MPI::File::Get_group() const
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.SH INPUT PARAMETER
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.ft R
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.TP 1i
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fh
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File handle (handle).
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.SH OUTPUT PARAMETERS
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.TP 1i
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group
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Group that opened the file (handle).
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.TP 1i
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IERROR
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Fortran only: Error status (integer).
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.SH DESCRIPTION
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.ft R
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MPI_File_get_group returns a duplicate of the group of the communicator
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used to open the file associated with
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.I fh.
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The group is returned in
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.I group.
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The user is responsible for freeing
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.I group,
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using MPI_Group_free.
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.SH ERRORS
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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.
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.sp
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Before the error value is returned, the current MPI error handler is
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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.
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