0b8fc13299
arrays. The MPI 3.0 standard added const to all in buffers in the C bindings. This commit adds the const keyword and in most cases casts const away. We will eventually should go through and update the various interfaces (coll, pml, io, etc) to take the const keyword. The group, comm, win, and datatype interfaces have been updated with const. cmr=v1.7.4:ticket=trac:3785:reviewer=jsquyres This commit was SVN r29266. The following Trac tickets were found above: Ticket 3785 --> https://svn.open-mpi.org/trac/ompi/ticket/3785
126 строки
4.7 KiB
C
126 строки
4.7 KiB
C
/* -*- 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) 2004-2005 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) 2007 Cisco Systems, Inc. All rights reserved.
|
|
* Copyright (c) 2010 University of Houston. All rights reserved.
|
|
* Copyright (c) 2013 Los Alamos National Security, LLC. 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 "ompi/memchecker.h"
|
|
|
|
#if OPAL_HAVE_WEAK_SYMBOLS && OMPI_PROFILING_DEFINES
|
|
#pragma weak MPI_Neighbor_allgather = PMPI_Neighbor_allgather
|
|
#endif
|
|
|
|
#if OMPI_PROFILING_DEFINES
|
|
#include "ompi/mpi/c/profile/defines.h"
|
|
#endif
|
|
|
|
static const char FUNC_NAME[] = "MPI_Neighbor_allgather";
|
|
|
|
|
|
int MPI_Neighbor_allgather(const void *sendbuf, int sendcount, MPI_Datatype sendtype,
|
|
void *recvbuf, int recvcount, MPI_Datatype recvtype,
|
|
MPI_Comm comm)
|
|
{
|
|
int err;
|
|
|
|
MEMCHECKER(
|
|
int rank;
|
|
ptrdiff_t ext;
|
|
|
|
rank = ompi_comm_rank(comm);
|
|
ompi_datatype_type_extent(recvtype, &ext);
|
|
|
|
memchecker_datatype(recvtype);
|
|
memchecker_comm(comm);
|
|
/* check whether the actual send buffer is defined. */
|
|
if (MPI_IN_PLACE == sendbuf) {
|
|
memchecker_call(&opal_memchecker_base_isdefined,
|
|
(char *)(recvbuf)+rank*ext,
|
|
recvcount, recvtype);
|
|
} else {
|
|
memchecker_datatype(sendtype);
|
|
memchecker_call(&opal_memchecker_base_isdefined, sendbuf, sendcount, sendtype);
|
|
}
|
|
/* check whether the receive buffer is addressable. */
|
|
memchecker_call(&opal_memchecker_base_isaddressable, recvbuf, recvcount, recvtype);
|
|
);
|
|
|
|
if (MPI_PARAM_CHECK) {
|
|
|
|
/* Unrooted operation -- same checks for all ranks on both
|
|
intracommunicators and intercommunicators */
|
|
|
|
err = MPI_SUCCESS;
|
|
OMPI_ERR_INIT_FINALIZE(FUNC_NAME);
|
|
if (ompi_comm_invalid(comm)) {
|
|
OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, MPI_ERR_COMM, FUNC_NAME);
|
|
} else if (MPI_DATATYPE_NULL == recvtype || NULL == recvtype) {
|
|
err = MPI_ERR_TYPE;
|
|
} else if (recvcount < 0) {
|
|
err = MPI_ERR_COUNT;
|
|
} else if (MPI_IN_PLACE == recvbuf) {
|
|
return OMPI_ERRHANDLER_INVOKE(comm, MPI_ERR_ARG, FUNC_NAME);
|
|
} else if (MPI_IN_PLACE != sendbuf) {
|
|
OMPI_CHECK_DATATYPE_FOR_SEND(err, sendtype, sendcount);
|
|
}
|
|
OMPI_ERRHANDLER_CHECK(err, comm, err, FUNC_NAME);
|
|
}
|
|
|
|
/* Do we need to do anything? Everyone had to give the same send
|
|
signature, which means that everyone must have given a
|
|
sendcount > 0 if there's anything to send for the intra-communicator
|
|
case. If we're doing IN_PLACE, however, check recvcount,
|
|
not sendcount. */
|
|
if ( OMPI_COMM_IS_INTRA(comm) ) {
|
|
if ((MPI_IN_PLACE != sendbuf && 0 == sendcount) ||
|
|
(0 == recvcount)) {
|
|
return MPI_SUCCESS;
|
|
}
|
|
}
|
|
else if ( OMPI_COMM_IS_INTER(comm) ){
|
|
/* for inter comunicators, the communication pattern
|
|
need not be symmetric. Specifically, one group is
|
|
allows to have sendcount=0, while the other has
|
|
a valid sendcount. Thus, the only way not to do
|
|
anything is if both sendcount and recvcount are zero. */
|
|
if ( 0 == sendcount && 0 == recvcount ) {
|
|
return MPI_SUCCESS;
|
|
}
|
|
}
|
|
|
|
OPAL_CR_ENTER_LIBRARY();
|
|
|
|
/* Invoke the coll component to perform the back-end operation */
|
|
/* XXX -- CONST -- do not cast away const -- update mca/coll */
|
|
err = comm->c_coll.coll_neighbor_allgather((void *) sendbuf, sendcount, sendtype,
|
|
recvbuf, recvcount, recvtype, comm,
|
|
comm->c_coll.coll_neighbor_allgather_module);
|
|
OMPI_ERRHANDLER_RETURN(err, comm, err, FUNC_NAME);
|
|
}
|
|
|