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/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil -*- */
/*
* Copyright (c) 2012-2020 The University of Tennessee and The University
* of Tennessee Research Foundation. All rights
* reserved.
* Copyright (c) 2012-2013 Inria. All rights reserved.
* Copyright (c) 2013 Los Alamos National Security, LLC. All rights
* reserved.
* Copyright (c) 2015 Research Organization for Information Science
* and Technology (RIST). All rights reserved.
* Copyright (c) 2017 IBM Corporation. All rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
*/
#include "ompi_config.h"
#include "ompi/mpi/c/bindings.h"
#include "ompi/runtime/params.h"
#include "ompi/communicator/communicator.h"
#include "ompi/errhandler/errhandler.h"
#include "ompi/memchecker.h"
#include "ompi/mca/topo/topo.h"
#include "ompi/mca/topo/base/base.h"
#if OMPI_BUILD_MPI_PROFILING
#if OPAL_HAVE_WEAK_SYMBOLS
#pragma weak MPI_Dist_graph_create = PMPI_Dist_graph_create
#endif
#define MPI_Dist_graph_create PMPI_Dist_graph_create
#endif
static const char FUNC_NAME[] = "MPI_Dist_graph_create";
int MPI_Dist_graph_create(MPI_Comm comm_old, int n, const int sources[],
const int degrees[], const int destinations[], const int weights[],
MPI_Info info, int reorder, MPI_Comm * newcomm)
{
mca_topo_base_module_t* topo;
int i, j, index, err, comm_size;
MEMCHECKER(
memchecker_comm(comm_old);
);
if (MPI_PARAM_CHECK) {
OMPI_ERR_INIT_FINALIZE(FUNC_NAME);
if (ompi_comm_invalid(comm_old)) {
return OMPI_ERRHANDLER_NOHANDLE_INVOKE(MPI_ERR_COMM,
FUNC_NAME);
} else if (OMPI_COMM_IS_INTER(comm_old)) {
return OMPI_ERRHANDLER_NOHANDLE_INVOKE(MPI_ERR_COMM,
FUNC_NAME);
} else if (n < 0 || NULL == newcomm) {
return OMPI_ERRHANDLER_INVOKE(comm_old, MPI_ERR_ARG, FUNC_NAME);
} else if (n > 0 && (NULL == sources || NULL == degrees ||
NULL == destinations || NULL == weights)) {
return OMPI_ERRHANDLER_INVOKE(comm_old, MPI_ERR_ARG, FUNC_NAME);
}
/* Ensure the arrays are full of valid-valued integers */
comm_size = ompi_comm_size(comm_old);
for( i = index = 0; i < n; ++i ) {
if (((sources[i] < 0) && (sources[i] != MPI_PROC_NULL)) || sources[i] >= comm_size) {
return OMPI_ERRHANDLER_INVOKE(comm_old, MPI_ERR_ARG,
FUNC_NAME);
} else if (degrees[i] < 0) {
return OMPI_ERRHANDLER_INVOKE(comm_old, MPI_ERR_ARG,
FUNC_NAME);
}
for( j = 0; j < degrees[i]; ++j ) {
if (((destinations[index] < 0) && (destinations[index] != MPI_PROC_NULL)) || destinations[index] >= comm_size) {
return OMPI_ERRHANDLER_INVOKE(comm_old, MPI_ERR_ARG,
FUNC_NAME);
} else if (MPI_UNWEIGHTED != weights && weights[index] < 0) {
return OMPI_ERRHANDLER_INVOKE(comm_old, MPI_ERR_ARG,
FUNC_NAME);
}
index++;
}
}
}
/* Ensure there is a topo attached to this communicator */
if(OMPI_SUCCESS != (err = mca_topo_base_comm_select(comm_old, NULL,
&topo, OMPI_COMM_DIST_GRAPH))) {
return OMPI_ERRHANDLER_INVOKE(comm_old, err, FUNC_NAME);
}
#if OPAL_ENABLE_FT_MPI
/*
* An early check, so as to return early if we are using a broken
* communicator. This is not absolutely necessary since we will
* check for this, and other, error conditions during the operation.
*/
if( OPAL_UNLIKELY(!ompi_comm_iface_create_check(comm_old, &err)) ) {
OMPI_ERRHANDLER_RETURN(err, comm_old, err, FUNC_NAME);
}
#endif
err = topo->topo.dist_graph.dist_graph_create(topo, comm_old, n, sources, degrees,
destinations, weights, &(info->super),
reorder, newcomm);
OMPI_ERRHANDLER_RETURN(err, comm_old, err, FUNC_NAME);
}
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