136 строки
4.8 KiB
C
136 строки
4.8 KiB
C
/*
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* Copyright (c) 2010 Cisco Systems, Inc. All rights reserved.
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* Copyright (c) 2012-2013 Los Alamos National Security, Inc. 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 "opal_config.h"
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#include "opal/constants.h"
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#include "opal/class/opal_list.h"
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#include "opal/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 "opal/util/output.h"
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#include "opal/mca/db/base/base.h"
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static bool selected = false;
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int
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opal_db_base_select(void)
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{
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mca_base_component_list_item_t *cli = NULL;
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opal_db_base_component_t *component = NULL;
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opal_db_base_module_t *module = NULL;
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opal_db_active_module_t *nmodule, *mod;
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int rc, fetch, store;
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bool inserted;
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if (selected) {
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/* ensure we don't do this twice */
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return OPAL_SUCCESS;
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}
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selected = true;
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/* Query all available components and ask if they have a module */
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OPAL_LIST_FOREACH(cli, &opal_db_base_framework.framework_components, mca_base_component_list_item_t) {
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component = (opal_db_base_component_t *) cli->cli_component;
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opal_output_verbose(5, opal_db_base_framework.framework_output,
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"mca:db:select: checking available component %s",
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component->base_version.mca_component_name);
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/* If there's no query function, skip it */
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if (NULL == component->query) {
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opal_output_verbose(5, opal_db_base_framework.framework_output,
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"mca:db:select: Skipping component [%s]. It does not implement a query function",
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component->base_version.mca_component_name );
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continue;
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}
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/* Query the component */
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opal_output_verbose(5, opal_db_base_framework.framework_output,
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"mca:db:select: Querying component [%s]",
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component->base_version.mca_component_name);
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rc = component->query(&module, &store, &fetch);
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/* If no module was returned, then skip component */
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if (OPAL_SUCCESS != rc || NULL == module) {
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opal_output_verbose(5, opal_db_base_framework.framework_output,
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"mca:db:select: Skipping component [%s]. Query failed to return a module",
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component->base_version.mca_component_name );
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continue;
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}
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/* attempt to initialize the module */
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if (NULL != module->init) {
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if (OPAL_SUCCESS != (rc = module->init())) {
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/* skip the module */
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continue;
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}
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}
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/* If we got a module, add to the store list */
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nmodule = OBJ_NEW(opal_db_active_module_t);
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nmodule->pri = store;
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nmodule->module = module;
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nmodule->component = component;
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/* maintain priority order */
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inserted = false;
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OPAL_LIST_FOREACH(mod, &opal_db_base.store_order, opal_db_active_module_t) {
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if (store > mod->pri) {
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opal_list_insert_pos(&opal_db_base.store_order,
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&mod->super, &nmodule->super);
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inserted = true;
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break;
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}
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}
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if (!inserted) {
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/* must be lowest priority - add to end */
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opal_list_append(&opal_db_base.store_order, &nmodule->super);
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}
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/* do the same for fetch list */
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nmodule = OBJ_NEW(opal_db_active_module_t);
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nmodule->pri = fetch;
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nmodule->module = module;
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nmodule->component = component;
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/* maintain priority order */
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inserted = false;
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OPAL_LIST_FOREACH(mod, &opal_db_base.fetch_order, opal_db_active_module_t) {
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if (fetch > mod->pri) {
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opal_list_insert_pos(&opal_db_base.fetch_order,
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&mod->super, &nmodule->super);
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inserted = true;
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break;
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}
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}
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if (!inserted) {
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/* must be lowest priority - add to end */
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opal_list_append(&opal_db_base.fetch_order, &nmodule->super);
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}
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}
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if (4 < opal_output_get_verbosity(opal_db_base_framework.framework_output)) {
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opal_output(0, "Final db priorities");
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/* show the prioritized list */
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OPAL_LIST_FOREACH(mod, &opal_db_base.store_order, opal_db_active_module_t) {
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opal_output(0, "\tComponent: %s Store Priority: %d",
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mod->component->base_version.mca_component_name, mod->pri);
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}
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OPAL_LIST_FOREACH(mod, &opal_db_base.fetch_order, opal_db_active_module_t) {
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opal_output(0, "\tComponent: %s Fetch Priority: %d",
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mod->component->base_version.mca_component_name, mod->pri);
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}
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}
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return OPAL_SUCCESS;;
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}
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