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/*
* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
* University Research and Technology
* Corporation. All rights reserved.
* Copyright (c) 2004-2013 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 (c) 2012-2013 Los Alamos National Security, Inc. All rights reserved.
* Copyright (c) 2012-2013 Inria. All rights reserved.
* Copyright (c) 2014 Research Organization for Information Science
* and Technology (RIST). All rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#include "ompi_config.h"
#include <stdio.h>
#include "ompi/constants.h"
#include "opal/class/opal_list.h"
#include "opal/util/output.h"
#include "ompi/mca/mca.h"
#include "opal/mca/base/base.h"
#include "ompi/mca/topo/base/base.h"
/*
* The static-component.h is generated by the configure script. It contains
* statements and the definition of an array of pointers to each component's
* public mca_base_component_t struct.
*/
#include "ompi/mca/topo/base/static-components.h"
static void mca_topo_base_module_construct(mca_topo_base_module_t * topo) {
memset(&(topo->mtc), 0, sizeof(topo->mtc));
}
static void mca_topo_base_module_destruct(mca_topo_base_module_t * topo) {
/* topo->mtc is an union of pointers to opal_object_t.
In order to release it, we just have to call OBJ_RELEASE on any of the member,
(cart in this case) and the appropriate object destructor will be called */
if (NULL != topo->mtc.cart) {
OBJ_RELEASE(topo->mtc.cart);
}
}
OBJ_CLASS_INSTANCE(mca_topo_base_module_t, opal_object_t,
mca_topo_base_module_construct,
mca_topo_base_module_destruct);
static int mca_topo_base_close(void)
{
return mca_base_framework_components_close(&ompi_topo_base_framework, NULL);
}
/**
* Function for finding and opening either all the MCA topo components, or
* the one that specifically requested via a MCA parameter.
*/
static int mca_topo_base_open(mca_base_open_flag_t flags)
{
return mca_base_framework_components_open(&ompi_topo_base_framework, flags);
}
int mca_topo_base_neighbor_count (ompi_communicator_t *comm, int *indegree, int *outdegree) {
if (!OMPI_COMM_IS_TOPO(comm)) {
return OMPI_ERR_BAD_PARAM;
}
if (OMPI_COMM_IS_CART(comm)) {
/* cartesian */
/* outdegree is always 2*ndims because we need to iterate over
empty buffers for MPI_PROC_NULL */
*outdegree = *indegree = 2 * comm->c_topo->mtc.cart->ndims;
} else if (OMPI_COMM_IS_GRAPH(comm)) {
/* graph */
int rank, nneighbors;
rank = ompi_comm_rank (comm);
mca_topo_base_graph_neighbors_count (comm, rank, &nneighbors);
*outdegree = *indegree = nneighbors;
} else if (OMPI_COMM_IS_DIST_GRAPH(comm)) {
/* graph */
*indegree = comm->c_topo->mtc.dist_graph->indegree;
*outdegree = comm->c_topo->mtc.dist_graph->outdegree;
}
return OMPI_SUCCESS;
}
MCA_BASE_FRAMEWORK_DECLARE(ompi, topo, "OMPI Topo", NULL,
mca_topo_base_open, mca_topo_base_close,
mca_topo_base_static_components, 0);
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