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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) 2004-2005 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 (c) 2008 Cisco Systems, Inc. All rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#include "ompi_config.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "mpi.h"
#include "ompi/constants.h"
#include "opal/class/opal_list.h"
#include "opal/util/output.h"
#include "orte/util/show_help.h"
#include "opal/mca/mca.h"
#include "opal/mca/base/base.h"
#include "opal/mca/base/mca_base_component_repository.h"
#include "ompi/mca/coll/coll.h"
#include "ompi/mca/coll/base/base.h"
/*
* Global variables
*/
bool mca_coll_base_components_available_valid = false;
opal_list_t mca_coll_base_components_available;
/*
* Private functions
*/
static int init_query(const mca_base_component_t * ls,
mca_base_component_priority_list_item_t * entry,
bool enable_progress_threads,
bool enable_mpi_threads);
static int init_query_2_0_0(const mca_base_component_t * ls,
mca_base_component_priority_list_item_t *
entry, bool enable_progress_threads,
bool enable_mpi_threads);
/*
* Scan down the list of successfully opened components and query each of
* them (the opened list will be one or more components. If the user
* requested a specific component, it will be the only component in the
* opened list). Create and populate the available list of all
* components who indicate that they want to be considered for selection.
* Close all components who do not want to be considered for selection,
* and destroy the opened list.
*
* Also find the basic component while we're doing all of this, and save
* it in a global variable so that we can find it easily later (e.g.,
* during scope selection).
*/
int mca_coll_base_find_available(bool enable_progress_threads,
bool enable_mpi_threads)
{
bool found = false;
mca_base_component_priority_list_item_t *entry;
opal_list_item_t *p;
const mca_base_component_t *component;
/* Initialize the list */
OBJ_CONSTRUCT(&mca_coll_base_components_available, opal_list_t);
mca_coll_base_components_available_valid = true;
/* The list of components that we should check has already been
established in mca_coll_base_open. */
for (found = false,
p = opal_list_remove_first(&mca_coll_base_components_opened);
p != NULL;
p = opal_list_remove_first(&mca_coll_base_components_opened)) {
component = ((mca_base_component_list_item_t *) p)->cli_component;
/* Call a subroutine to do the work, because the component may
represent different versions of the coll MCA. */
entry = OBJ_NEW(mca_base_component_priority_list_item_t);
entry->super.cli_component = component;
entry->cpli_priority = 0;
if (OMPI_SUCCESS == init_query(component, entry,
enable_progress_threads,
enable_mpi_threads)) {
opal_list_append(&mca_coll_base_components_available,
(opal_list_item_t *) entry);
found = true;
} else {
/* If the component doesn't want to run, then close it.
It's already had its close() method invoked; now close
it out of the DSO repository (if it's there). */
mca_base_component_repository_release(component);
OBJ_RELEASE(entry);
}
/* Free the entry from the "opened" list */
OBJ_RELEASE(p);
}
/* The opened list is now no longer useful and we can free it */
OBJ_DESTRUCT(&mca_coll_base_components_opened);
mca_coll_base_components_opened_valid = false;
/* If we have no collective components available, it's an error.
Thanks for playing! */
if (!found) {
/* Need to free all items in the list */
OBJ_DESTRUCT(&mca_coll_base_components_available);
mca_coll_base_components_available_valid = false;
opal_output_verbose(10, mca_coll_base_output,
"coll:find_available: no coll components available!");
orte_show_help("help-mca-base", "find-available:none-found", true,
"coll");
return OMPI_ERROR;
}
/* All done */
return OMPI_SUCCESS;
}
/*
* Query a component, see if it wants to run at all. If it does, save
* some information. If it doesn't, close it.
*/
static int init_query(const mca_base_component_t * component,
mca_base_component_priority_list_item_t * entry,
bool enable_progress_threads, bool enable_mpi_threads)
{
int ret;
opal_output_verbose(10, mca_coll_base_output,
"coll:find_available: querying coll component %s",
component->mca_component_name);
/* This component has already been successfully opened. So now
query it. */
if (2 == component->mca_type_major_version &&
0 == component->mca_type_minor_version &&
0 == component->mca_type_release_version) {
ret = init_query_2_0_0(component, entry, enable_progress_threads,
enable_mpi_threads);
} else {
/* Unrecognized coll API version */
opal_output_verbose(10, mca_coll_base_output,
"coll:find_available: unrecognized coll API version (%d.%d.%d, ignored)",
component->mca_type_major_version,
component->mca_type_minor_version,
component->mca_type_release_version);
return OMPI_ERROR;
}
/* Query done -- look at the return value to see what happened */
if (OMPI_SUCCESS != ret) {
opal_output_verbose(10, mca_coll_base_output,
"coll:find_available: coll component %s is not available",
component->mca_component_name);
if (NULL != component->mca_close_component) {
component->mca_close_component();
}
} else {
opal_output_verbose(10, mca_coll_base_output,
"coll:find_available: coll component %s is available",
component->mca_component_name);
}
/* All done */
return ret;
}
/*
* Query a specific component, coll v2.0.0
*/
static int init_query_2_0_0(const mca_base_component_t * component,
mca_base_component_priority_list_item_t * entry,
bool enable_progress_threads,
bool enable_mpi_threads)
{
mca_coll_base_component_2_0_0_t *coll =
(mca_coll_base_component_2_0_0_t *) component;
return coll->collm_init_query(enable_progress_threads,
enable_mpi_threads);
}
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