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/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil -*- */
/*
* Copyright (c) 2004-2007 The Trustees of Indiana University and Indiana
* University Research and Technology
* Corporation. All rights reserved.
* Copyright (c) 2004-2020 The University of Tennessee and The University
* of Tennessee Research Foundation. All rights
* reserved.
* Copyright (c) 2004-2008 High Performance Computing Center Stuttgart,
* University of Stuttgart. All rights reserved.
* Copyright (c) 2004-2005 The Regents of the University of California.
* All rights reserved.
* Copyright (c) 2006 Cisco Systems, Inc. All rights reserved.
* Copyright (c) 2013 Los Alamos National Security, LLC. All rights
* reserved.
* Copyright (c) 2015-2018 Research Organization for Information Science
* and Technology (RIST). All rights reserved.
* Copyright (c) 2021 IBM Corporation. All rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#include "ompi_config.h"
#include <stdio.h>
#include "ompi/mpi/c/bindings.h"
#include "ompi/runtime/params.h"
#include "ompi/communicator/communicator.h"
#include "ompi/errhandler/errhandler.h"
#include "ompi/datatype/ompi_datatype.h"
#include "opal/datatype/opal_convertor.h"
#include "ompi/memchecker.h"
#if OMPI_BUILD_MPI_PROFILING
#if OPAL_HAVE_WEAK_SYMBOLS
#pragma weak MPI_Pack = PMPI_Pack
#endif
#define MPI_Pack PMPI_Pack
#endif
static const char FUNC_NAME[] = "MPI_Pack";
int MPI_Pack(const void *inbuf, int incount, MPI_Datatype datatype,
void *outbuf, int outsize, int *position, MPI_Comm comm)
{
int rc = MPI_SUCCESS, ret;
opal_convertor_t local_convertor;
struct iovec invec;
unsigned int iov_count;
size_t size;
MEMCHECKER(
memchecker_datatype(datatype);
memchecker_call(&opal_memchecker_base_isdefined, inbuf, incount, datatype);
memchecker_call(&opal_memchecker_base_isaddressable, (void *)((char *)outbuf + *position), outsize, MPI_PACKED);
memchecker_comm(comm);
);
if (MPI_PARAM_CHECK) {
OMPI_ERR_INIT_FINALIZE(FUNC_NAME);
if (ompi_comm_invalid(comm)) {
return OMPI_ERRHANDLER_NOHANDLE_INVOKE(MPI_ERR_COMM, FUNC_NAME);
} else if ((NULL == outbuf) || (NULL == position)) { /* inbuf can be MPI_BOTTOM */
return OMPI_ERRHANDLER_INVOKE(comm, MPI_ERR_ARG, FUNC_NAME);
} else if (incount < 0) {
return OMPI_ERRHANDLER_INVOKE(comm, MPI_ERR_COUNT, FUNC_NAME);
} else if (outsize < 0) {
return OMPI_ERRHANDLER_INVOKE(comm, MPI_ERR_ARG, FUNC_NAME);
}
OMPI_CHECK_DATATYPE_FOR_SEND(rc, datatype, incount);
OMPI_ERRHANDLER_CHECK(rc, comm, rc, FUNC_NAME);
OMPI_CHECK_USER_BUFFER(rc, inbuf, datatype, incount);
OMPI_ERRHANDLER_CHECK(rc, comm, rc, FUNC_NAME);
}
/*
* If a datatype's description contains a single element that describes
* a large vector that path is reasonably optimized in pack/unpack. On
* the other hand if the count and datatype combined describe the same
* vector, that gets processed one element at a time.
*
* So at the top level we morph the call if the count and datatype look
* like a good vector.
*/
ompi_datatype_consolidate_t dtmod;
rc = ompi_datatype_consolidate_create(incount, datatype, &dtmod,
OMPI_DATATYPE_CONSOLIDATE_THRESHOLD);
OMPI_ERRHANDLER_CHECK(rc, comm, rc, FUNC_NAME);
OBJ_CONSTRUCT( &local_convertor, opal_convertor_t );
/* the resulting convertor will be set to the position ZERO */
opal_convertor_copy_and_prepare_for_send( ompi_mpi_local_convertor,
&(dtmod.dt->super), dtmod.count,
(void *) inbuf, 0, &local_convertor );
/* Check for truncation */
opal_convertor_get_packed_size( &local_convertor, &size );
if( (*position + size) > (unsigned int)outsize ) { /* we can cast as we already checked for < 0 */
OBJ_DESTRUCT( &local_convertor );
return OMPI_ERRHANDLER_INVOKE(comm, MPI_ERR_TRUNCATE, FUNC_NAME);
}
/* Prepare the iovec with all information */
invec.iov_base = (char*) outbuf + (*position);
invec.iov_len = size;
/* Do the actual packing */
iov_count = 1;
ret = opal_convertor_pack( &local_convertor, &invec, &iov_count, &size );
*position += size;
OBJ_DESTRUCT( &local_convertor );
rc = ompi_datatype_consolidate_free(&dtmod);
OMPI_ERRHANDLER_CHECK(rc, comm, rc, FUNC_NAME);
/* All done. Note that the convertor returns 1 upon success, not
OPAL_SUCCESS. */
if (1 != ret) {
rc = OMPI_ERROR;
}
OMPI_ERRHANDLER_RETURN(rc, comm, MPI_ERR_UNKNOWN, FUNC_NAME);
}
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