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openmpi/ompi/mpi/man/man3/MPI_Win_set_attr.3in
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.\" Copyright 2010 Cisco Systems, Inc. All rights reserved.
.\" Copyright 2006-2008 Sun Microsystems, Inc.
.\" Copyright (c) 1996 Thinking Machines Corporation
.TH MPI_Win_set_attr 3 "#OMPI_DATE#" "#PACKAGE_VERSION#" "#PACKAGE_NAME#"
.SH NAME
\fBMPI_Win_set_attr\fP \- Sets the value of a window attribute.
.SH SYNTAX
.ft R
.SH C Syntax
.nf
#include <mpi.h>
int MPI_Win_set_attr(MPI_Win \fIwin\fP, int \fIwin_keyval\fP, void *\fIattribute_val\fP)
.fi
.SH Fortran Syntax (see FORTRAN 77 NOTES)
.nf
INCLUDE 'mpif.h'
MPI_WIN_SET_ATTR(\fIWIN, WIN_KEYVAL, ATTRIBUTE_VAL, IERROR\fP)
INTEGER \fIWIN, WIN_KEYVAL, IERROR\fP
INTEGER(KIND=MPI_ADDRESS_KIND) \fIATTRIBUTE_VAL\fP
.fi
.SH C++ Syntax
.nf
#include <mpi.h>
void MPI::Win::Set_attr(int \fIwin_keyval\fP, const void* \fIattribute_val\fP)
.fi
.SH INPUT/OUTPUT PARAMETER
.ft R
.TP 1i
win
Window to which attribute will be attached (handle).
.SH INPUT PARAMETERS
.ft R
.TP 1i
win_keyval
Key value (integer).
.TP 1i
attribute_val
Attribute value.
.SH OUTPUT PARAMETER
.ft R
.TP 1i
IERROR
Fortran only: Error status (integer).
.SH DESCRIPTION
.ft R
.SH FORTRAN 77 NOTES
.ft R
The MPI standard prescribes portable Fortran syntax for
the \fIATTRIBUTE_VAL\fP argument only for Fortran 90. FORTRAN 77
users may use the non-portable syntax
.sp
.nf
INTEGER*MPI_ADDRESS_KIND \fIATTRIBUTE_VAL\fP
.fi
.sp
where MPI_ADDRESS_KIND is a constant defined in mpif.h
and gives the length of the declared integer in bytes.
.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.