89 строки
3.2 KiB
C
89 строки
3.2 KiB
C
/* -*- Mode: C; c-basic-offset:4 ; -*- */
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/*
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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) 2004-2005 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) 2004-2005 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 "mpi/c/bindings.h"
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#include "ompi/datatype/datatype.h"
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#include "ompi/datatype/convertor.h"
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#if OMPI_HAVE_WEAK_SYMBOLS && OMPI_PROFILING_DEFINES
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#pragma weak MPI_Pack = PMPI_Pack
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#endif
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#if OMPI_PROFILING_DEFINES
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#include "mpi/c/profile/defines.h"
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#endif
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static const char FUNC_NAME[] = "MPI_Pack";
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int MPI_Pack(void *inbuf, int incount, MPI_Datatype datatype,
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void *outbuf, int outsize, int *position, MPI_Comm comm)
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{
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int rc, freeAfter;
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ompi_convertor_t local_convertor;
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struct iovec invec;
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unsigned int iov_count;
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size_t size;
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if (MPI_PARAM_CHECK) {
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OMPI_ERR_INIT_FINALIZE(FUNC_NAME);
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if (MPI_COMM_NULL == comm) {
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return OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, MPI_ERR_COMM, FUNC_NAME);
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} else if ((NULL == outbuf) || (NULL == position)) { /* inbuf can be MPI_BOTTOM */
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return OMPI_ERRHANDLER_INVOKE(comm, MPI_ERR_ARG, FUNC_NAME);
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} else if (incount < 0) {
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return OMPI_ERRHANDLER_INVOKE(comm, MPI_ERR_COUNT, FUNC_NAME);
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} else if (outsize < 0) {
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return OMPI_ERRHANDLER_INVOKE(comm, MPI_ERR_ARG, FUNC_NAME);
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} else if (MPI_DATATYPE_NULL == datatype) {
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return OMPI_ERRHANDLER_INVOKE(comm, MPI_ERR_TYPE, FUNC_NAME);
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}
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}
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OBJ_CONSTRUCT( &local_convertor, ompi_convertor_t );
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/* the resulting convertor will be set to the position ZERO */
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ompi_convertor_copy_and_prepare_for_send( ompi_mpi_local_convertor, datatype,
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incount, inbuf, &local_convertor );
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/* Check for truncation */
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ompi_convertor_get_packed_size( &local_convertor, &size );
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if( (*position + size) > (unsigned int)outsize ) { /* we can cast as we already checked for < 0 */
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OBJ_DESTRUCT( &local_convertor );
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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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invec.iov_base = (char*) outbuf + (*position);
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invec.iov_len = outsize - (*position);
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/* Do the actual packing */
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iov_count = 1;
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rc = ompi_convertor_pack( &local_convertor, &invec, &iov_count, &size, &freeAfter );
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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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OMPI_SUCCESS. */
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OMPI_ERRHANDLER_RETURN((rc == 1) ? OMPI_SUCCESS : OMPI_ERROR,
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comm, MPI_ERR_UNKNOWN, FUNC_NAME);
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}
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