138 строки
4.6 KiB
C
138 строки
4.6 KiB
C
/*
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* Copyright (c) 2013 Mellanox Technologies, Inc.
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* All rights reserved.
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* $COPYRIGHT$
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*
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* Additional copyrights may follow
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*
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* $HEADER$
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "oshmem_config.h"
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#include "opal/class/opal_list.h"
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#include "oshmem/mca/mca.h"
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#include "opal/mca/base/base.h"
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#include "opal/mca/base/mca_base_component_repository.h"
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#include "oshmem/constants.h"
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#include "oshmem/util/oshmem_util.h"
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#include "oshmem/mca/atomic/atomic.h"
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#include "oshmem/mca/atomic/base/base.h"
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/*
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* Private functions
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*/
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static int init_query(const mca_base_component_t * ls,
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bool enable_progress_threads,
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bool enable_threads);
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/*
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* Scan down the list of successfully opened components and query each of
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* them (the opened list will be one or more components. If the user
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* requested a specific component, it will be the only component in the
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* opened list). Create and populate the available list of all
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* components who indicate that they want to be considered for selection.
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* Close all components who do not want to be considered for selection,
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* and destroy the opened list.
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*
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* Also find the basic component while we're doing all of this, and save
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* it in a global variable so that we can find it easily later (e.g.,
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* during scope selection).
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*/
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int mca_atomic_base_find_available(bool enable_progress_threads,
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bool enable_threads)
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{
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mca_base_component_list_item_t *cli, *next;
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const mca_base_component_t *component;
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OPAL_LIST_FOREACH_SAFE(cli, next, &oshmem_atomic_base_framework.framework_components, mca_base_component_list_item_t) {
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component = cli->cli_component;
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/* Call a subroutine to do the work, because the component may
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represent different versions of the coll MCA. */
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if (OSHMEM_SUCCESS != init_query(component, enable_progress_threads,
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enable_threads)) {
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/* If the component doesn't want to run, then close it.
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Now close it out and release it from the DSO repository (if it's there). */
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opal_list_remove_item(&oshmem_atomic_base_framework.framework_components, &cli->super);
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mca_base_component_close(component, oshmem_atomic_base_framework.framework_output);
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OBJ_RELEASE(cli);
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}
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}
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/* If we have no collective components available, it's an error.
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Thanks for playing! */
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if (opal_list_get_size(&oshmem_atomic_base_framework.framework_components) == 0) {
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ATOMIC_VERBOSE(10,
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"atomic:find_available: no components available!");
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return OSHMEM_ERROR;
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}
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/* All done */
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return mca_atomic_base_select();
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}
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/*
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* Query a component, see if it wants to run at all. If it does, save
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* some information. If it doesn't, close it.
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*/
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static int init_query(const mca_base_component_t * component,
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bool enable_progress_threads,
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bool enable_threads)
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{
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int ret;
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ATOMIC_VERBOSE(10,
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"atomic:find_available: querying atomic component %s",
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component->mca_component_name);
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/* This component has already been successfully opened. So now
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query it. */
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if (1 == component->mca_type_major_version
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&& 0 == component->mca_type_minor_version
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&& 0 == component->mca_type_release_version) {
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mca_atomic_base_component_t *atomic =
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(mca_atomic_base_component_t *) component;
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ret = atomic->atomic_init(enable_progress_threads, enable_threads);
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} else {
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/* Unrecognized coll API version */
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ATOMIC_VERBOSE(10,
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"atomic:find_available: unrecognized atomic API version (%d.%d.%d, ignored)",
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component->mca_type_major_version,
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component->mca_type_minor_version,
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component->mca_type_release_version);
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return OSHMEM_ERROR;
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}
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/* Query done -- look at the return value to see what happened */
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if (OSHMEM_SUCCESS != ret) {
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ATOMIC_VERBOSE(10,
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"atomic:find_available: atomic component %s is not available",
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component->mca_component_name);
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if (NULL != component->mca_close_component) {
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component->mca_close_component();
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}
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} else {
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ATOMIC_VERBOSE(10,
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"atomic:find_available: atomic component %s is available",
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component->mca_component_name);
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}
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/* All done */
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return ret;
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}
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