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openmpi/orte/mca/pls/base/pls_base_select.c
Brian Barrett 566a050c23 Next step in the project split, mainly source code re-arranging
- move files out of toplevel include/ and etc/, moving it into the
    sub-projects
  - rather than including config headers with <project>/include, 
    have them as <project>
  - require all headers to be included with a project prefix, with
    the exception of the config headers ({opal,orte,ompi}_config.h
    mpi.h, and mpif.h)

This commit was SVN r8985.
2006-02-12 01:33:29 +00:00

235 строки
7.2 KiB
C

/*
* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
* University Research and Technology
* Corporation. All rights reserved.
* Copyright (c) 2004-2005 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.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#include "orte_config.h"
#include "orte/orte_constants.h"
#include "opal/class/opal_list.h"
#include "opal/util/output.h"
#include "opal/util/show_help.h"
#include "opal/mca/mca.h"
#include "opal/mca/base/base.h"
#include "orte/mca/pls/base/base.h"
/*
* Local functions
*/
static orte_pls_base_module_t *select_preferred(char *name);
static orte_pls_base_module_t *select_any(void);
static int compare(opal_list_item_t **a, opal_list_item_t **b);
static void cmp_constructor(orte_pls_base_cmp_t *cmp);
static void cmp_destructor(orte_pls_base_cmp_t *cmp);
/*
* Global variables
*/
OBJ_CLASS_INSTANCE(orte_pls_base_cmp_t, opal_list_item_t,
cmp_constructor, cmp_destructor);
/*
* Function for selecting one component from all those that are
* available.
*/
orte_pls_base_module_t* orte_pls_base_select(char *preferred)
{
orte_pls_base_module_t *ret;
/* Construct the empty list */
OBJ_CONSTRUCT(&orte_pls_base.pls_available, opal_list_t);
orte_pls_base.pls_available_valid = true;
/* Now - did we want a specific one? */
if (NULL != preferred) {
ret = select_preferred(preferred);
} else {
ret = select_any();
}
if (NULL == ret) {
opal_show_help("help-pls-base.txt", "no-available-pls", true);
}
return ret;
}
static orte_pls_base_module_t *select_preferred(char *name)
{
opal_list_item_t *item;
mca_base_component_list_item_t *cli;
orte_pls_base_component_t *component;
orte_pls_base_module_t *module;
orte_pls_base_cmp_t *cmp;
int priority;
/* Look for a matching selected name */
opal_output(orte_pls_base.pls_output,
"orte:base:select: looking for component %s", name);
for (item = opal_list_get_first(&orte_pls_base.pls_opened);
item != opal_list_get_end(&orte_pls_base.pls_opened);
item = opal_list_get_next(item)) {
cli = (mca_base_component_list_item_t *) item;
component = (orte_pls_base_component_t *) cli->cli_component;
/* If we found it, call the component's init function to see
if we get a module back */
if (0 == strcmp(name,
component->pls_version.mca_component_name)) {
opal_output(orte_pls_base.pls_output,
"orte:base:select: found module for compoent %s", name);
module = component->pls_init(&priority);
/* If we got a non-NULL module back, then the component wants
to be considered for selection */
if (NULL != module) {
opal_output(orte_pls_base.pls_output,
"orte:base:open: component %s returns priority %d",
component->pls_version.mca_component_name,
priority);
cmp = OBJ_NEW(orte_pls_base_cmp_t);
cmp->component = component;
cmp->module = module;
cmp->priority = priority;
opal_list_append(&orte_pls_base.pls_available, &cmp->super);
return module;
}
}
}
/* Didn't find a matching name */
opal_output(orte_pls_base.pls_output,
"orte:base:select: did not find module for compoent %s", name);
return NULL;
}
static orte_pls_base_module_t *select_any(void)
{
opal_list_item_t *item;
mca_base_component_list_item_t *cli;
orte_pls_base_component_t *component;
orte_pls_base_module_t *module;
orte_pls_base_cmp_t *cmp;
int priority;
/* Query all the opened components and see if they want to run */
for (item = opal_list_get_first(&orte_pls_base.pls_opened);
opal_list_get_end(&orte_pls_base.pls_opened) != item;
item = opal_list_get_next(item)) {
cli = (mca_base_component_list_item_t *) item;
component = (orte_pls_base_component_t *) cli->cli_component;
opal_output(orte_pls_base.pls_output,
"orte:base:open: querying component %s",
component->pls_version.mca_component_name);
/* Call the component's init function and see if it wants to be
selected */
module = component->pls_init(&priority);
/* If we got a non-NULL module back, then the component wants
to be considered for selection */
if (NULL != module) {
opal_output(orte_pls_base.pls_output,
"orte:base:open: component %s returns priority %d",
component->pls_version.mca_component_name,
priority);
cmp = OBJ_NEW(orte_pls_base_cmp_t);
cmp->component = component;
cmp->module = module;
cmp->priority = priority;
opal_list_append(&orte_pls_base.pls_available, &cmp->super);
} else {
opal_output(orte_pls_base.pls_output,
"orte:base:open: component %s does NOT want to be considered for selection",
component->pls_version.mca_component_name);
}
}
/* If the list is empty, return NULL */
if (opal_list_is_empty(&orte_pls_base.pls_available)) {
opal_output(orte_pls_base.pls_output,
"orte:base:select: no components available!");
return NULL;
}
/* Sort the resulting available list in priority order */
opal_list_sort(&orte_pls_base.pls_available, compare);
/* Otherwise, return the first item (it's already sorted in
priority order) */
item = opal_list_get_first(&orte_pls_base.pls_available);
cmp = (orte_pls_base_cmp_t *) item;
opal_output(orte_pls_base.pls_output,
"orte:base:select: highest priority component: %s",
cmp->component->pls_version.mca_component_name);
return cmp->module;
}
/*
* Need to make this an *opposite* compare (this is invoked by qsort)
* so that we get the highest priority first (i.e., so the sort is
* highest->lowest, not lowest->highest)
*/
static int compare(opal_list_item_t **a, opal_list_item_t **b)
{
orte_pls_base_cmp_t *aa = *((orte_pls_base_cmp_t **) a);
orte_pls_base_cmp_t *bb = *((orte_pls_base_cmp_t **) b);
if (bb->priority > aa->priority) {
return 1;
} else if (bb->priority == aa->priority) {
return 0;
} else {
return -1;
}
}
static void cmp_constructor(orte_pls_base_cmp_t *cmp)
{
cmp->component = NULL;
cmp->module = NULL;
cmp->priority = -1;
}
static void cmp_destructor(orte_pls_base_cmp_t *cmp)
{
cmp_constructor(cmp);
}