71 строка
2.4 KiB
C
71 строка
2.4 KiB
C
/*
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* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
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* University Research and Technology
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* Corporation. All rights reserved.
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* Copyright (c) 2004-2006 The University of Tennessee and The University
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* of Tennessee Research Foundation. All rights
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* reserved.
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* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
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* University of Stuttgart. All rights reserved.
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* Copyright (c) 2004-2005 The Regents of the University of California.
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* All rights reserved.
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* $COPYRIGHT$
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*
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* Additional copyrights may follow
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*
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* $HEADER$
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*/
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#include "ompi_config.h"
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#include <stdio.h>
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#include "ompi/mpi/c/bindings.h"
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#include "ompi/attribute/attribute.h"
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#include "ompi/win/win.h"
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#if OMPI_HAVE_WEAK_SYMBOLS && OMPI_PROFILING_DEFINES
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#pragma weak MPI_Win_get_attr = PMPI_Win_get_attr
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#endif
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#if OMPI_PROFILING_DEFINES
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#include "ompi/mpi/c/profile/defines.h"
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#endif
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static const char FUNC_NAME[] = "MPI_Win_get_attr";
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int MPI_Win_get_attr(MPI_Win win, int win_keyval,
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void *attribute_val, int *flag)
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{
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int ret;
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if (MPI_PARAM_CHECK) {
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OMPI_ERR_INIT_FINALIZE(FUNC_NAME);
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if (ompi_win_invalid(win)) {
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return OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, MPI_ERR_WIN, FUNC_NAME);
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} else if ((NULL == attribute_val) || (NULL == flag)) {
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return OMPI_ERRHANDLER_INVOKE(win, MPI_ERR_ARG, FUNC_NAME);
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}
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}
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/* This stuff is very confusing. Be sure to see
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src/attribute/attribute.c for a lengthy comment explaining Open
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MPI attribute behavior. */
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ret = ompi_attr_get_c(win->w_keyhash, win_keyval,
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(void**)attribute_val, flag);
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/* MPI-2 Section 6.2.2 says that for MPI_WIN_BASE, base will be a
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pointer to the window in C/C++ and an integer representation of
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the base address in Fortran. The only rational way to do this
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is to store a pointer to the pointer in C (so that the
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attribute code will do the right thing in Fortran) and
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dereference the C attribute here so that it's right for C as
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well. */
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if (win_keyval == MPI_WIN_BASE) {
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*((void**) attribute_val) = *((void**) attribute_val);
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}
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OMPI_ERRHANDLER_RETURN(ret, win, MPI_ERR_OTHER, FUNC_NAME);
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}
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