880f2d5431
Thanks Alex and the folks at Mellanox for the help. Signed-off-by: Gilles Gouaillardet <gilles@rist.or.jp>
116 строки
3.9 KiB
C
116 строки
3.9 KiB
C
/*
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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) 2004-2016 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) 2006-2013 Cisco Systems, Inc. All rights reserved.
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* Copyright (c) 2015-2017 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/datatype/ompi_datatype.h"
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#include "opal/datatype/opal_convertor.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_Unpack = PMPI_Unpack
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#endif
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#define MPI_Unpack PMPI_Unpack
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#endif
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static const char FUNC_NAME[] = "MPI_Unpack";
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int MPI_Unpack(const void *inbuf, int insize, int *position,
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void *outbuf, int outcount, MPI_Datatype datatype,
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MPI_Comm comm)
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{
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int rc = MPI_SUCCESS;
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opal_convertor_t local_convertor;
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struct iovec outvec;
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unsigned int iov_count;
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size_t size;
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MEMCHECKER(
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memchecker_datatype(datatype);
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memchecker_call(&opal_memchecker_base_isdefined, outbuf, outcount, datatype);
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memchecker_comm(comm);
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);
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if (MPI_PARAM_CHECK) {
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OMPI_ERR_INIT_FINALIZE(FUNC_NAME);
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if (ompi_comm_invalid(comm)) {
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return OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, MPI_ERR_COMM,
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FUNC_NAME);
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}
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if ((NULL == inbuf) || (NULL == position)) { /* outbuf can be MPI_BOTTOM */
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return OMPI_ERRHANDLER_INVOKE(comm, MPI_ERR_ARG, FUNC_NAME);
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}
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if (outcount < 0) {
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return OMPI_ERRHANDLER_INVOKE(comm, MPI_ERR_COUNT, FUNC_NAME);
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}
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OMPI_CHECK_DATATYPE_FOR_RECV(rc, datatype, outcount);
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OMPI_ERRHANDLER_CHECK(rc, comm, rc, FUNC_NAME);
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OMPI_CHECK_USER_BUFFER(rc, outbuf, datatype, outcount);
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OMPI_ERRHANDLER_CHECK(rc, comm, rc, FUNC_NAME);
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}
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OPAL_CR_ENTER_LIBRARY();
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if( insize > 0 ) {
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int ret;
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OBJ_CONSTRUCT( &local_convertor, opal_convertor_t );
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/* the resulting convertor will be set the the position ZERO */
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opal_convertor_copy_and_prepare_for_recv( ompi_mpi_local_convertor, &(datatype->super),
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outcount, outbuf, 0, &local_convertor );
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/* Check for truncation */
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opal_convertor_get_packed_size( &local_convertor, &size );
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if( (*position + size) > (unsigned int)insize ) {
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OBJ_DESTRUCT( &local_convertor );
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OPAL_CR_EXIT_LIBRARY();
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return OMPI_ERRHANDLER_INVOKE(comm, MPI_ERR_TRUNCATE, FUNC_NAME);
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}
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/* Prepare the iovec with all informations */
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outvec.iov_base = (char*) inbuf + (*position);
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outvec.iov_len = size;
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/* Do the actual unpacking */
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iov_count = 1;
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ret = opal_convertor_unpack( &local_convertor, &outvec, &iov_count, &size );
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*position += size;
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OBJ_DESTRUCT( &local_convertor );
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/* All done. Note that the convertor returns 1 upon success, not
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OPAL_SUCCESS. */
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if (1 != ret) {
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rc = OMPI_ERROR;
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}
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}
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OPAL_CR_EXIT_LIBRARY();
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OMPI_ERRHANDLER_RETURN(rc, comm, MPI_ERR_UNKNOWN, FUNC_NAME);
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}
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