71 строка
2.2 KiB
Groff
71 строка
2.2 KiB
Groff
.\"Copyright 2006, Sun Microsystems, Inc.
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.\" Copyright (c) 1996 Thinking Machines Corporation
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.TH MPI_Win_get_attr 3OpenMPI "September 2006" "Open MPI 1.2" " "
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.SH NAME
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\fBMPI_Win_get_attr\fP \- Obtains the value of a window attribute.
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.SH SYNTAX
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.ft R
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.SH C Syntax
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.nf
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#include <mpi.h>
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int MPI_Win_get_attr(MPI_Win \fIwin\fP, int \fIwin_keyval\fP,
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void *\fIattribute_val\fP, int *\fIflag\fP)
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.SH Fortran Syntax (see FORTRAN 77 NOTES)
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.nf
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INCLUDE 'mpif.h'
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MPI_WIN_GET_ATTR(\fIWIN, WIN_KEYVAL, ATTRIBUTE_VAL, FLAG, IERROR\fP)
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INTEGER \fIWIN, WIN_KEYVAL, IERROR\fP
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INTEGER(KIND=MPI_ADDRESS_KIND) \fIATTRIBUTE_VAL\fP
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LOGICAL \fIFLAG\fP
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.SH C++ Syntax
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.nf
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#include <mpi.h>
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bool MPI::Win::Get_attr(int win_keyval, void* attribute_val) const
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.SH INPUT PARAMETERS
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.ft R
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.TP 1i
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win
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Window to which the attribute is attached (handle).
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.TP 1i
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win_keyval
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Key value (integer).
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.SH OUTPUT PARAMETERS
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.ft R
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.TP 1i
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attribute_val
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Attribute value, unless \fIag\fP = false
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.TP 1i
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flag
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False if no attribute is associated with the key (logical).
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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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Obtains the value of a window attribute.
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.SH FORTRAN 77 NOTES
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.ft R
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The MPI standard prescribes portable Fortran syntax for
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the \fIATTRIBUTE_VAL\fP argument only for Fortran 90. FORTRAN 77
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users may use the non-portable syntax
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.sp
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.nf
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INTEGER*MPI_ADDRESS_KIND \fIATTRIBUTE_VAL\fP
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.fi
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.sp
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where MPI_ADDRESS_KIND is a constant defined in mpif.h
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and gives the length of the declared integer in bytes.
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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. 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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