96 строки
2.6 KiB
C
96 строки
2.6 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 "include/orte_constants.h"
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#include "mca/gpr/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_gpr_base_select(void)
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{
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ompi_list_item_t *item;
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mca_base_component_list_item_t *cli;
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mca_gpr_base_component_t *component, *best_component = NULL;
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orte_gpr_base_module_t *module, *best_module = NULL;
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bool multi, hidden;
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int priority, best_priority = -1;
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/* Iterate through all the available components */
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for (item = ompi_list_get_first(&orte_gpr_base_components_available);
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item != ompi_list_get_end(&orte_gpr_base_components_available);
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item = ompi_list_get_next(item)) {
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cli = (mca_base_component_list_item_t *) item;
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component = (mca_gpr_base_component_t *) cli->cli_component;
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/* Call the component's init function and see if it wants to be
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selected */
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module = component->gpr_init(&multi, &hidden, &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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/* 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_component) {
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best_component->gpr_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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/* If it's not the best one, finalize it */
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else {
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component->gpr_finalize();
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}
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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_component) {
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return ORTE_ERROR;
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}
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/* We have happiness -- save the component and module for later
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usage */
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orte_gpr = *best_module;
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orte_gpr_base_selected_component = *best_component;
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orte_gpr_base_selected = true;
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/* all done */
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return ORTE_SUCCESS;
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}
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