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openmpi/ompi/mpi/c/alltoall.c
Rainer Keller a8144cca8d - Fix the return codes -- not OMPI, but MPI..
- Use the datatype-checks of bindings.h within recv.
   However, for the time being disable the check for overlapped,
   as it is not correctly set.

This commit was SVN r9298.
2006-03-16 09:42:46 +00:00

79 строки
2.4 KiB
C

/*
* Copyright (c) 2004-2005 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) 2004-2005 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.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#include "ompi_config.h"
#include <stdio.h>
#include "ompi/mpi/c/bindings.h"
#include "ompi/datatype/datatype.h"
#if OMPI_HAVE_WEAK_SYMBOLS && OMPI_PROFILING_DEFINES
#pragma weak MPI_Alltoall = PMPI_Alltoall
#endif
#if OMPI_PROFILING_DEFINES
#include "ompi/mpi/c/profile/defines.h"
#endif
static const char FUNC_NAME[] = "MPI_Alltoall";
int MPI_Alltoall(void *sendbuf, int sendcount, MPI_Datatype sendtype,
void *recvbuf, int recvcount, MPI_Datatype recvtype,
MPI_Comm comm)
{
int err;
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)) {
return OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, MPI_ERR_COMM,
FUNC_NAME);
} else if (MPI_DATATYPE_NULL == recvtype) {
err = MPI_ERR_TYPE;
} else if (recvcount < 0) {
err = MPI_ERR_COUNT;
} else if (MPI_IN_PLACE == sendbuf || MPI_IN_PLACE == recvbuf) {
err = MPI_ERR_ARG;
} else {
OMPI_CHECK_DATATYPE_FOR_SEND(err, sendtype, sendcount);
}
OMPI_ERRHANDLER_CHECK(err, comm, err, FUNC_NAME);
}
/* If the sendcount is 0, since everyone gave the same value, then
we don't need to do anything */
if (0 == sendcount) {
return MPI_SUCCESS;
}
/* Invoke the coll component to perform the back-end operation */
err = comm->c_coll.coll_alltoall(sendbuf, sendcount, sendtype,
recvbuf, recvcount, recvtype,
comm);
OMPI_ERRHANDLER_RETURN(err, comm, err, FUNC_NAME);
}