103 строки
3.9 KiB
C
103 строки
3.9 KiB
C
/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil -*- */
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/*
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* Copyright (c) 2004-2007 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) 2004-2005 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) 2004-2008 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 (c) 2010-2012 Cisco Systems, Inc. All rights reserved.
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* Copyright (c) 2013 Los Alamos National Security, LLC. All rights
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* reserved.
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* Copyright (c) 2015 Research Organization for Information Science
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* and Technology (RIST). 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/runtime/params.h"
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#include "ompi/communicator/communicator.h"
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#include "ompi/errhandler/errhandler.h"
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#include "ompi/mpi/fortran/base/fint_2_int.h"
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#include "ompi/mpi/fortran/base/constants.h"
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#include "ompi/memchecker.h"
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#if OMPI_BUILD_MPI_PROFILING
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#if OPAL_HAVE_WEAK_SYMBOLS
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#pragma weak MPI_Status_c2f = PMPI_Status_c2f
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#endif
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#define MPI_Status_c2f PMPI_Status_c2f
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#endif
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static const char FUNC_NAME[] = "MPI_Status_c2f";
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int MPI_Status_c2f(const MPI_Status *c_status, MPI_Fint *f_status)
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{
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const int *c_ints;
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int i;
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MEMCHECKER(
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if(c_status != MPI_STATUSES_IGNORE) {
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/*
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* Before checking the complete status, we need to reset the definedness
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* of the MPI_ERROR-field (single-completion calls wait/test).
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*/
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opal_memchecker_base_mem_defined((void*)&c_status->MPI_ERROR, sizeof(int));
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memchecker_status(c_status);
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}
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);
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OPAL_CR_NOOP_PROGRESS();
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if (MPI_PARAM_CHECK) {
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OMPI_ERR_INIT_FINALIZE(FUNC_NAME);
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/* MPI-2:4.12.5 says that if you pass in
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MPI_STATUS[ES]_IGNORE, it's erroneous */
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if (NULL == c_status || MPI_STATUS_IGNORE == c_status ||
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MPI_STATUSES_IGNORE == c_status || NULL == f_status) {
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return OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD,
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MPI_ERR_IN_STATUS, FUNC_NAME);
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}
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}
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/* Note that MPI-2.2 16.3.5 states that even the hidden data in a
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status must be converted (!). This is somewhat problematic
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because the Fortran data is all INTEGERS while the C MPI_Status
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contains a size_t. That being said, note 2 things:
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1. The _ucount and _canceled members are never accessed from
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Fortran.
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2. configure calculated a value of MPI_STATUS_SIZE to ensure
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that the Fortran status is the Right size to hold the C
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MPI_Status (including the size_t member).
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So for the purposes of this function, just copy over all the
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data as if they were int's. This works because all OMPI
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Fortran MPI API functions that take a status as an IN argument
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first call MPI_Status_f2c on it before using it (in which case
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we'll do the exact opposite copy, thereby rebuilding the size_t
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value properly before it is accessed in C).
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Note that if sizeof(int) > sizeof(INTEGER), we're potentially
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hosed anyway (i.e., even the public values in the status could
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get truncated). But if sizeof(int) == sizeof(INTEGER) or
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sizeof(int) < sizeof(INTEGER), everything should be kosher. */
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c_ints = (const int*)c_status;
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for( i = 0; i < (int)(sizeof(MPI_Status) / sizeof(int)); i++ )
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f_status[i] = OMPI_INT_2_FINT(c_ints[i]);
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return MPI_SUCCESS;
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}
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