124 строки
3.7 KiB
C
124 строки
3.7 KiB
C
/*
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* Copyright (c) 2012-2013 Los Alamos National Security, Inc. All rights reserved.
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* Copyright (c) 2013 Intel, Inc. 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 "opal_config.h"
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#include "opal/constants.h"
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#include "opal/mca/base/base.h"
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#include "opal/mca/common/pmi/common_pmi.h"
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#include "opal/mca/db/db.h"
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#include "opal/mca/db/base/base.h"
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#include "db_pmi.h"
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static int db_pmi_component_open(void);
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static int db_pmi_component_query(opal_db_base_module_t **module,
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int *store_priority,
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int *fetch_priority,
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bool restrict_local);
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static int db_pmi_component_close(void);
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static int db_pmi_component_register(void);
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/*
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* Instantiate the public struct with all of our public information
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* and pointers to our public functions in it
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*/
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opal_db_base_component_t mca_db_pmi_component = {
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{
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OPAL_DB_BASE_VERSION_1_0_0,
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/* Component name and version */
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"pmi",
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OPAL_MAJOR_VERSION,
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OPAL_MINOR_VERSION,
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OPAL_RELEASE_VERSION,
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/* Component open and close functions */
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db_pmi_component_open,
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db_pmi_component_close,
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NULL,
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db_pmi_component_register
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},
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{
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/* The component is checkpoint ready */
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MCA_BASE_METADATA_PARAM_CHECKPOINT
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},
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db_pmi_component_query
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};
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/* if we are to be used, someone external will set
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* our store priority to a high level
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*/
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static int my_store_priority = 0;
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/* fetch from us if not found elsewhere */
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static int my_fetch_priority = 1;
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static int db_pmi_component_open(void)
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{
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return OPAL_SUCCESS;
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}
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static int db_pmi_component_query(opal_db_base_module_t **module,
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int *store_priority,
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int *fetch_priority,
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bool restrict_local)
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{
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if (!restrict_local) {
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/* only use PMI if available - the ESS pmi module
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* will force our selection if we are direct-launched,
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* and the orted will turn us "off" if indirectly launched
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*/
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if (mca_common_pmi_init()) {
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*store_priority = my_store_priority;
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*fetch_priority = my_fetch_priority;
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*module = &opal_db_pmi_module;
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return OPAL_SUCCESS;
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}
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}
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*store_priority = 0;
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*fetch_priority = 0;
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*module = NULL;
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return OPAL_ERROR;
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}
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static int db_pmi_component_close(void)
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{
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mca_common_pmi_finalize();
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return OPAL_SUCCESS;
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}
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static int db_pmi_component_register(void)
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{
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mca_base_component_t *c = &mca_db_pmi_component.base_version;
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my_store_priority = 0;
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(void) mca_base_component_var_register(c, "store_priority",
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"Priority dictating order in which store commands will given to database components",
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MCA_BASE_VAR_TYPE_INT, NULL, 0, 0,
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OPAL_INFO_LVL_9,
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MCA_BASE_VAR_SCOPE_READONLY,
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&my_store_priority);
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my_fetch_priority = 1;
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(void) mca_base_component_var_register(c, "fetch_priority",
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"Priority dictating order in which fetch commands will given to database components",
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MCA_BASE_VAR_TYPE_INT, NULL, 0, 0,
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OPAL_INFO_LVL_9,
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MCA_BASE_VAR_SCOPE_READONLY,
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&my_fetch_priority);
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return OPAL_SUCCESS;
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}
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