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.\" -*- nroff -*-
.\" Copyright 2010 Cisco Systems, Inc. All rights reserved.
.\" Copyright 2006-2008 Sun Microsystems, Inc.
.\" Copyright (c) 1996 Thinking Machines Corporation
.\" $COPYRIGHT$
.TH MPI_Comm_set_errhandler 3 "#OMPI_DATE#" "#PACKAGE_VERSION#" "#PACKAGE_NAME#"
.SH NAME
\fBMPI_Comm_set_errhandler \fP \- Attaches a new error handler to a communicator.
.SH SYNTAX
.ft R
.SH C Syntax
.nf
#include <mpi.h>
int MPI_Comm_set_errhandler(MPI_Comm \fIcomm\fP,
MPI_Errhandler \fIerrhandler\fP)
.fi
.SH Fortran Syntax
.nf
USE MPI
! or the older form: INCLUDE 'mpif.h'
MPI_COMM_SET_ERRHANDLER(\fICOMM, ERRHANDLER, IERROR\fP)
INTEGER \fICOMM, ERRHANDLER, IERROR\fP
.fi
.SH Fortran 2008 Syntax
.nf
USE mpi_f08
MPI_Comm_set_errhandler(\fIcomm\fP, \fIerrhandler\fP, \fIierror\fP)
TYPE(MPI_Comm), INTENT(IN) :: \fIcomm\fP
TYPE(MPI_Errhandler), INTENT(IN) :: \fIerrhandler\fP
INTEGER, OPTIONAL, INTENT(OUT) :: \fIierror\fP
.fi
.SH C++ Syntax
.nf
#include <mpi.h>
void MPI::Comm::Set_errhandler(const MPI::Errhandler& \fIerrhandler\fP)
.fi
.SH INPUT/OUTPUT PARAMETER
.ft R
.TP 1i
comm
Communicator (handle).
.SH OUTPUT PARAMETERS
.ft R
.TP 1i
errhandler
New error handler for communicator (handle).
.ft R
.TP 1i
IERROR
Fortran only: Error status (integer).
.SH DESCRIPTION
.ft R
MPI_Comm_set_errhandler attaches a new error handler to a communicator. The error handler must be either a predefined error handler or an error handler created by a call to MPI_Comm_create_errhandler. This call is identical to MPI_Errhandler_set, the use of which is deprecated.
.SH 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.
.sp
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.
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