60 строки
2.0 KiB
Groff
60 строки
2.0 KiB
Groff
.\"Copyright 2006, Sun Microsystems, Inc. All rights reserved. Use is subject to license terms.
|
|
.\" Copyright (c) 1996 Thinking Machines Corporation
|
|
.TH MPI_File_get_atomicity 3OpenMPI "September 2006" "Open MPI 1.2" " "
|
|
.SH NAME
|
|
\fBMPI_File_get_atomicity\fP \- Returns current consistency semantics for data-access operations.
|
|
|
|
.SH SYNTAX
|
|
.ft R
|
|
.nf
|
|
C Syntax
|
|
#include <mpi.h>
|
|
int MPI_File_get_atomicity(MPI_File \fIfh\fP, int \fI*flag\fP)
|
|
|
|
Fortran Syntax
|
|
INCLUDE 'mpif.h'
|
|
MPI_FILE_GET_ATOMICITY(\fIFH\fP,\fI FLAG\fP,\fI IERROR\fP)
|
|
INTEGER \FIFH, IERROR\FP
|
|
LOGICAL \FIFLAG\FP
|
|
|
|
.SH C++ Syntax
|
|
.nf
|
|
#include <mpi.h>
|
|
bool MPI::File::Get_atomicity() const
|
|
|
|
.SH INPUT PARAMETER
|
|
.ft R
|
|
.TP 1i
|
|
fh
|
|
File handle (handle).
|
|
|
|
.SH OUTPUT PARAMETER
|
|
.ft R
|
|
.TP 1i
|
|
flag
|
|
true if atomic mode is enabled, false if nonatomic mode is enabled (boolean).
|
|
.TP 1i
|
|
IERROR
|
|
Fortran only: Error status (integer).
|
|
|
|
.SH DESCRIPTION
|
|
.ft R
|
|
MPI_File_get_atomicity returns the current consistency semantics for
|
|
data access operations on the set of file handles created by one
|
|
collective MPI_File_open. If \fIflag\fP is
|
|
.I true,
|
|
atomic mode is currently enabled; if
|
|
.I flag
|
|
is
|
|
.I false,
|
|
nonatomic mode is currently enabled.
|
|
|
|
.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. 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.
|
|
|
|
' @(#)MPI_File_get_atomicity.3 1.8 97/08/26
|
|
' @(#)MPI_File_get_atomicity.3 1.31 06/03/09
|