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/*
* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
* University Research and Technology
* Corporation. All rights reserved.
* Copyright (c) 2004-2013 The University of Tennessee and The University
* of Tennessee Research Foundation. All rights
* reserved.
* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
* University of Stuttgart. All rights reserved.
* Copyright (c) 2004-2005 The Regents of the University of California.
* All rights reserved.
* Copyright (c) 2007 Sun Microsystems, Inc. All rights reserved.
* Copyright (c) 2013 Cisco Systems, Inc. All rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#include "ompi_config.h"
#include "opal/util/argv.h"
#include "opal/util/output.h"
#include "orte/util/show_help.h"
#include "opal/mca/mca.h"
#include "opal/mca/base/base.h"
#include "opal/mca/base/mca_base_component_repository.h"
#include "ompi/mca/btl/btl.h"
#include "ompi/mca/btl/base/base.h"
#include "orte/mca/errmgr/errmgr.h"
#include "opal/runtime/opal.h"
OBJ_CLASS_INSTANCE( mca_btl_base_selected_module_t,
opal_list_item_t,
NULL,
NULL );
/**
* Function for weeding out btl components that don't want to run.
*
* Call the init function on all available components to find out if
* they want to run. Select all components that don't fail. Failing
* components will be closed and unloaded. The selected modules will
* be returned to the caller in a opal_list_t.
*/
int mca_btl_base_select(bool enable_progress_threads,
bool enable_mpi_threads)
{
int i, num_btls;
opal_list_t btls_to_close;
opal_list_item_t *item;
mca_base_component_list_item_t *cli;
mca_btl_base_component_t *component;
mca_btl_base_module_t **modules;
mca_btl_base_selected_module_t *sm;
char** include = opal_argv_split(mca_btl_base_include, ',');
char** exclude = opal_argv_split(mca_btl_base_exclude, ',');
OBJ_CONSTRUCT(&btls_to_close, opal_list_t);
/* Traverse the list of opened modules; call their init
functions. */
item = opal_list_get_first(&mca_btl_base_components_opened);
while(item != opal_list_get_end(&mca_btl_base_components_opened)) {
opal_list_item_t *next = opal_list_get_next(item);
cli = (mca_base_component_list_item_t *) item;
component = (mca_btl_base_component_t *) cli->cli_component;
/* if there is an include list - item must be in the list to be included */
if ( NULL != include ) {
char** argv = include;
bool found = false;
while(argv && *argv) {
if(strcmp(component->btl_version.mca_component_name,*argv) == 0) {
found = true;
break;
}
argv++;
}
if(found == false) {
goto close_component_and_continue;
}
/* otherwise - check the exclude list to see if this item has been specifically excluded */
} else if ( NULL != exclude ) {
char** argv = exclude;
bool found = false;
while(argv && *argv) {
if(strcmp(component->btl_version.mca_component_name,*argv) == 0) {
found = true;
break;
}
argv++;
}
if(found == true) {
goto close_component_and_continue;
}
}
opal_output_verbose(10, mca_btl_base_output,
"select: initializing %s component %s",
component->btl_version.mca_type_name,
component->btl_version.mca_component_name);
if (NULL == component->btl_init) {
opal_output_verbose(10, mca_btl_base_output,
"select: no init function; ignoring component %s",
component->btl_version.mca_component_name);
goto close_component_and_continue;
} else {
modules = component->btl_init(&num_btls, enable_progress_threads,
enable_mpi_threads);
/* If the component didn't initialize, remove it from the opened
list and remove it from the component repository */
if (NULL == modules) {
opal_output_verbose(10, mca_btl_base_output,
"select: init of component %s returned failure",
component->btl_version.mca_component_name);
goto close_component_and_continue;
}
/* Otherwise, it initialized properly. Save it. */
else {
opal_output_verbose(10, mca_btl_base_output,
"select: init of component %s returned success",
component->btl_version.mca_component_name);
if (opal_profile) {
opal_output(0, "btl:%s", component->btl_version.mca_component_name);
}
for (i = 0; i < num_btls; ++i) {
sm = OBJ_NEW(mca_btl_base_selected_module_t);
if (NULL == sm) {
return OMPI_ERR_OUT_OF_RESOURCE;
}
sm->btl_component = component;
sm->btl_module = modules[i];
opal_list_append(&mca_btl_base_modules_initialized,
(opal_list_item_t*) sm);
}
free(modules);
item = next;
continue; /* The only succesful path for this component */
}
}
close_component_and_continue:
opal_output_verbose(10, mca_btl_base_output,
"select: component %s unloaded",
component->btl_version.mca_component_name);
opal_list_remove_item(&mca_btl_base_components_opened, item);
opal_list_append(&btls_to_close, item);
item = next;
}
/* Close/release all the components that said they don't want to
run */
if (!opal_list_is_empty(&btls_to_close)) {
mca_base_components_close(mca_btl_base_output,
&btls_to_close, NULL, false);
}
OBJ_DESTRUCT(&btls_to_close);
/* Finished querying all components. Check for the bozo case. */
if (0 == opal_list_get_size(&mca_btl_base_modules_initialized)) {
orte_show_help("help-mca-base.txt", "find-available:none-found", true,
"btl");
orte_errmgr.abort(1, NULL);
}
return OMPI_SUCCESS;
}
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