92 строки
2.7 KiB
C
92 строки
2.7 KiB
C
/*
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* Copyright (c) 2004-2005 The Trustees of Indiana University.
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* All rights reserved.
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* Copyright (c) 2004-2005 The Trustees of the University of Tennessee.
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* All rights reserved.
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* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
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* University of Stuttgart. All rights reserved.
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* Copyright (c) 2004-2005 The Regents of the University of California.
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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 "orte_config.h"
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#include "orte/include/orte_constants.h"
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#include "opal/util/output.h"
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#include "opal/util/trace.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 "orte/mca/rmgr/base/base.h"
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/**
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* Function for selecting one component from all those that are
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* available.
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*/
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int orte_rmgr_base_select(void)
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{
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opal_list_item_t *item;
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mca_base_component_list_item_t *cli;
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orte_rmgr_base_component_t *component, *best_component = NULL;
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orte_rmgr_base_module_t *module, *best_module = NULL;
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int priority, best_priority = -1;
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OPAL_TRACE(5);
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/* Iterate through all the available components */
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for (item = opal_list_get_first(&orte_rmgr_base.rmgr_components);
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item != opal_list_get_end(&orte_rmgr_base.rmgr_components);
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item = opal_list_get_next(item)) {
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cli = (mca_base_component_list_item_t *) item;
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component = (orte_rmgr_base_component_t *) cli->cli_component;
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/* Call the component's init function and see if it wants to be selected */
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module = component->rmgr_init(&priority);
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/* If we got a non-NULL module back, then the component wants to
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be selected. So save its multi/hidden values and save the
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module with the highest priority */
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if (NULL == module)
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continue;
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/* If this is the best one, save it */
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if (priority > best_priority) {
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/* If there was a previous best one, finalize */
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if (NULL != best_module && NULL != best_module->finalize) {
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best_module->finalize();
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}
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/* Save the new best one */
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best_module = module;
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best_component = component;
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/* update the best priority */
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best_priority = priority;
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}
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}
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/* If we didn't find one to select, barf */
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if (NULL == best_module) {
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opal_output(orte_rmgr_base.rmgr_output,
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"rmgr:select: no components available!");
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return ORTE_ERROR;
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}
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/* save the module for later usage */
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orte_rmgr = *best_module;
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return ORTE_SUCCESS;
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}
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