174 строки
6.6 KiB
C
174 строки
6.6 KiB
C
/*
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* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
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* University Research and Technology
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* Corporation. All rights reserved.
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* Copyright (c) 2004-2006 The University of Tennessee and The University
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* of Tennessee Research Foundation. All rights
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* 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 "ompi_config.h"
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#include "opal/class/opal_list.h"
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#include "opal/util/show_help.h"
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#include "opal/util/output.h"
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#include "opal/runtime/opal_progress.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/errmgr/errmgr.h"
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#include "ompi/constants.h"
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#include "ompi/mca/pml/pml.h"
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#include "ompi/mca/pml/base/base.h"
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typedef struct opened_component_t {
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opal_list_item_t super;
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mca_pml_base_component_t *om_component;
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} opened_component_t;
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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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* Call the init function on all available components and get their
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* priorities. Select the component with the highest priority. All
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* other components will be closed and unloaded. The selected component
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* will have all of its function pointers saved and returned to the
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* caller.
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*/
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int mca_pml_base_select(bool enable_progress_threads,
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bool enable_mpi_threads)
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{
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int priority = 0, best_priority = 0;
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opal_list_item_t *item = NULL;
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mca_base_component_list_item_t *cli = NULL;
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mca_pml_base_component_t *component = NULL, *best_component = NULL;
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mca_pml_base_module_t *module = NULL, *best_module = NULL;
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opal_list_t opened;
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opened_component_t *om = NULL;
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/* Traverse the list of available components; call their init
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functions. */
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best_priority = -1;
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best_component = NULL;
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module = NULL;
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OBJ_CONSTRUCT(&opened, opal_list_t);
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for (item = opal_list_get_first(&mca_pml_base_components_available);
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opal_list_get_end(&mca_pml_base_components_available) != item;
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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 = (mca_pml_base_component_t *) cli->cli_component;
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/* if there is an include list - item must be in the list to be included */
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if( (NULL != mca_pml_base_pml) &&
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(strcmp(component->pmlm_version.mca_component_name, mca_pml_base_pml) != 0) ) {
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opal_output_verbose( 10, mca_pml_base_output,
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"select: component %s not in the include list",
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component->pmlm_version.mca_component_name );
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continue;
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}
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if (NULL == component->pmlm_init) {
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opal_output_verbose( 10, mca_pml_base_output,
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"select: no init function; ignoring component %s",
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component->pmlm_version.mca_component_name );
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continue;
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}
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opal_output_verbose( 10, mca_pml_base_output,
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"select: initializing %s component %s",
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component->pmlm_version.mca_type_name,
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component->pmlm_version.mca_component_name );
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module = component->pmlm_init(&priority, enable_progress_threads,
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enable_mpi_threads);
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if (NULL == module) {
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opal_output_verbose( 10, mca_pml_base_output,
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"select: init returned failure for component %s",
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component->pmlm_version.mca_component_name );
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continue;
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}
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opal_output_verbose( 10, mca_pml_base_output,
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"select: init returned priority %d", priority );
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if (priority > best_priority) {
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best_priority = priority;
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best_component = component;
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best_module = module;
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}
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om = (opened_component_t*)malloc(sizeof(opened_component_t));
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if (NULL == om) {
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return OMPI_ERR_OUT_OF_RESOURCE;
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}
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OBJ_CONSTRUCT(om, opal_list_item_t);
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om->om_component = component;
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opal_list_append(&opened, (opal_list_item_t*) om);
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}
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/* Finished querying all components. Check for the bozo case. */
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if( NULL == best_component ) {
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opal_show_help("help-mca-base.txt", "find-available:none-found", true, "pml");
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if( NULL != mca_pml_base_pml ) {
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orte_errmgr.error_detected(1, "PML %s cannot be selected", mca_pml_base_pml, NULL);
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} else {
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orte_errmgr.error_detected(2, "No pml component available. This shouldn't happen.", NULL);
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}
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}
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/* Finalize all non-selected components */
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for (item = opal_list_remove_first(&opened);
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NULL != item;
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item = opal_list_remove_first(&opened)) {
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om = (opened_component_t *) item;
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if (om->om_component != best_component) {
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/* Finalize */
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if (NULL != om->om_component->pmlm_finalize) {
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/* Blatently ignore the return code (what would we do to
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recover, anyway? This component is going away, so errors
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don't matter anymore) */
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om->om_component->pmlm_finalize();
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opal_output_verbose(10, mca_pml_base_output,
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"select: component %s not selected / finalized",
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component->pmlm_version.mca_component_name);
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}
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}
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OBJ_DESTRUCT( om );
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free(om);
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}
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OBJ_DESTRUCT( &opened );
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/* This base function closes, unloads, and removes from the
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available list all unselected components. The available list will
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contain only the selected component. */
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mca_base_components_close(mca_pml_base_output,
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&mca_pml_base_components_available,
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(mca_base_component_t *) best_component);
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/* Save the winner */
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mca_pml_base_selected_component = *best_component;
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mca_pml = *best_module;
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opal_output_verbose( 10, mca_pml_base_output,
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"select: component %s selected",
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best_component->pmlm_version.mca_component_name );
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/* register the winner's callback */
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opal_progress_register(mca_pml.pml_progress);
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/* All done */
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return OMPI_SUCCESS;
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}
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