57 строки
2.0 KiB
Plaintext
57 строки
2.0 KiB
Plaintext
.\" Copyright 2010 Cisco Systems, Inc. All rights reserved.
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.\" Copyright 2007-2008 Sun Microsystems, Inc.
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.\" Copyright (c) 1996 Thinking Machines Corporation
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.TH MPI_Win_free 3 "#OMPI_DATE#" "#PACKAGE_VERSION#" "#PACKAGE_NAME#"
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.SH NAME
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\fBMPI_Win_free\fP \- Frees the window object and returns a null handle.
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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_free(MPI_Win *\fIwin\fP)
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.fi
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.SH Fortran Syntax
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.nf
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INCLUDE 'mpif.h'
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MPI_WIN_FREE(\fIWIN, IERROR\fP)
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INTEGER \fIWIN, IERROR\fP
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.fi
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.SH C++ Syntax
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.nf
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#include <mpi.h>
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void MPI::Win::Free()
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.fi
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.SH INPUT/OUTPUT PARAMETER
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.ft R
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.TP 1i
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win
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Window object (handle).
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.SH OUTPUT PARAMETER
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.ft R
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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_Win_free frees the window object \fIwin\fP and returns a null handle (equal to MPI_WIN_NULL). This collective call is executed by all processes in the group associated with \fIwin\fP. It can be invoked by a process only after it has completed its involvement in RMA communications on window \fIwin\fP, that is, the process has called MPI_Win_fence, or called MPI_Win_unlock to match a previous call to MPI_Win_lock. When the call returns, the window memory can be freed.
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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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.SH SEE ALSO
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MPI_Win_create
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MPI_Win_fence
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MPI_Win_unlock
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.br
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