mca_bml_base_module_t* mca_bml_r2_component_init( int* priority,
bool enable_progress_threads,
bool enable_mpi_threads )
{
/* initialize BTLs */
if(OMPI_SUCCESS != mca_btl_base_select(enable_progress_threads,enable_mpi_threads))
return NULL;
*priority = 100;
mca_bml_r2.btls_added = false;
return &mca_bml_r2.super;
}
int mca_bml_r2_ft_event(int state)
{
#if OPAL_ENABLE_FT_CR == 1
static bool first_continue_pass = false;
ompi_proc_t** procs = NULL;
size_t num_procs;
size_t btl_idx;
int ret, p;
int loc_state;
int param_type = -1;
const char **btl_list;
if(OPAL_CRS_CHECKPOINT == state) {
/* Do nothing for now */
}
else if(OPAL_CRS_CONTINUE == state) {
first_continue_pass = !first_continue_pass;
/* Since nothing in Checkpoint, we are fine here (unless required by BTL) */
if (opal_cr_continue_like_restart && !first_continue_pass) {
procs = ompi_proc_all(&num_procs);
if(NULL == procs) {
return OMPI_ERR_OUT_OF_RESOURCE;
}
}
}
else if(OPAL_CRS_RESTART_PRE == state ) {
/* Nothing here */
}
else if(OPAL_CRS_RESTART == state ) {
procs = ompi_proc_all(&num_procs);
if(NULL == procs) {
return OMPI_ERR_OUT_OF_RESOURCE;
}
}
else if(OPAL_CRS_TERM == state ) {
;
}
else {
;
}
/* Never call the ft_event functions attached to the BTLs on the second
* pass of RESTART since on the first pass they were unloaded and therefore
* no longer exist.
*/
if( OPAL_CRS_RESTART != state ) {
if( OPAL_CRS_CONTINUE == state && !first_continue_pass ) {
;
} else {
/* Since we only ever call into the BTLs once during the first restart
* pass, just lie to them on this pass for a bit of local clarity.
*/
if( OPAL_CRS_RESTART_PRE == state ) {
loc_state = OPAL_CRS_RESTART;
} else {
loc_state = state;
}
/*
* Call ft_event in:
* - BTL modules
* - MPool modules
*
* These should be cleaning out stale state, and memory references in
* preparation for being shut down.
*/
for(btl_idx = 0; btl_idx < mca_bml_r2.num_btl_modules; btl_idx++) {
/*
* Notify Mpool
*/
if( NULL != (mca_bml_r2.btl_modules[btl_idx])->btl_mpool &&
NULL != (mca_bml_r2.btl_modules[btl_idx])->btl_mpool->mpool_ft_event ) {
opal_output_verbose(10, ompi_cr_output,
"bml:r2: ft_event: Notify the %s MPool.\n",
(mca_bml_r2.btl_modules[btl_idx])->btl_mpool->mpool_component->mpool_version.mca_component_name);
if(OMPI_SUCCESS != (ret = (mca_bml_r2.btl_modules[btl_idx])->btl_mpool->mpool_ft_event(loc_state) ) ) {
continue;
}
}
/*
* Notify BTL
*/
if( NULL != (mca_bml_r2.btl_modules[btl_idx])->btl_ft_event) {
opal_output_verbose(10, ompi_cr_output,
"bml:r2: ft_event: Notify the %s BTL.\n",
(mca_bml_r2.btl_modules[btl_idx])->btl_component->btl_version.mca_component_name);
if(OMPI_SUCCESS != (ret = (mca_bml_r2.btl_modules[btl_idx])->btl_ft_event(loc_state) ) ) {
continue;
}
}
}
} /* OPAL_CRS_CONTINUE == state && !first_continue_pass */
}
if(OPAL_CRS_CHECKPOINT == state) {
;
}
else if(OPAL_CRS_CONTINUE == state) {
/* Matches OPAL_CRS_RESTART_PRE */
if (opal_cr_continue_like_restart && first_continue_pass) {
if( OMPI_SUCCESS != (ret = mca_bml_r2_finalize()) ) {
opal_output(0, "bml:r2: ft_event(Restart): Failed to finalize BML framework\n");
return ret;
}
if( OMPI_SUCCESS != (ret = mca_base_framework_close(&opal_btl_base_framework)) ) {
opal_output(0, "bml:r2: ft_event(Restart): Failed to close BTL framework\n");
return ret;
}
}
/* Matches OPAL_CRS_RESTART */
else if (opal_cr_continue_like_restart && !first_continue_pass) {
/*
* Barrier to make all processes have been successfully restarted before
* we try to remove some restart only files.
*/
opal_pmix.fence(NULL, 0);
/*
* Re-open the BTL framework to get the full list of components.
*/
if( OMPI_SUCCESS != (ret = mca_base_framework_open(&opal_btl_base_framework, 0)) ) {
opal_output(0, "bml:r2: ft_event(Restart): Failed to open BTL framework\n");
return ret;
}
/*
* Re-select the BTL components/modules
* This will cause the BTL components to discover the available
* network options on this machine, and post proper modex informaiton.
*/
if( OMPI_SUCCESS != (ret = mca_btl_base_select(OPAL_ENABLE_PROGRESS_THREADS,
OMPI_ENABLE_THREAD_MULTIPLE) ) ) {
opal_output(0, "bml:r2: ft_event(Restart): Failed to select in BTL framework\n");
return ret;
}
/*
* Clear some structures so we can properly repopulate them
*/
mca_bml_r2.btls_added = false;
for(p = 0; p < (int)num_procs; ++p) {
if( NULL != procs[p]->proc_endpoints[OMPI_PROC_ENDPOINT_TAG_BML]) {
OBJ_RELEASE(procs[p]->proc_endpoints[OMPI_PROC_ENDPOINT_TAG_BML]);
procs[p]->proc_endpoints[OMPI_PROC_ENDPOINT_TAG_BML] = NULL;
}
OBJ_RELEASE(procs[p]);
}
if( NULL != procs ) {
free(procs);
procs = NULL;
}
}
}
else if(OPAL_CRS_RESTART_PRE == state ) {
opal_output_verbose(10, ompi_cr_output,
"bml:r2: ft_event(Restart): Finalize BML\n");
/*
* Finalize the BML
* - Flush progress functions
* - Flush module references
* - mca_btl_base_close()
* Need to do this because we may have BTL components that were
* unloaded in the first selection that may be available now.
* Conversely we may have BTL components loaded now that
* are not available now.
*/
if( OMPI_SUCCESS != (ret = mca_bml_r2_finalize()) ) {
opal_output(0, "bml:r2: ft_event(Restart): Failed to finalize BML framework\n");
return ret;
}
if( OMPI_SUCCESS != (ret = mca_base_framework_close(&opal_btl_base_framework)) ) {
opal_output(0, "bml:r2: ft_event(Restart): Failed to close BTL framework\n");
return ret;
}
}
else if(OPAL_CRS_RESTART == state ) {
/*
* Barrier to make all processes have been successfully restarted before
* we try to remove some restart only files.
*/
opal_pmix.fence(NULL, 0);
/*
* Re-open the BTL framework to get the full list of components.
* - but first clear the MCA value that was there
*/
param_type = mca_base_var_find("ompi", "btl", NULL, NULL);
btl_list = NULL;
mca_base_var_get_value(param_type, &btl_list, NULL, NULL);
opal_output_verbose(11, ompi_cr_output,
"Restart (Previous BTL MCA): <%s>\n", btl_list ? btl_list[0] : "");
if( OMPI_SUCCESS != (ret = mca_base_framework_open(&opal_btl_base_framework, 0)) ) {
opal_output(0, "bml:r2: ft_event(Restart): Failed to open BTL framework\n");
return ret;
}
/* The reregistered paramter is guaranteed to have the same index */
btl_list = NULL;
mca_base_var_get_value(param_type, &btl_list, NULL, NULL);
opal_output_verbose(11, ompi_cr_output,
"Restart (New BTL MCA): <%s>\n", btl_list ? btl_list[0] : "");
if( NULL != btl_list ) {
free(btl_list);
btl_list = NULL;
}
/*
* Re-select the BTL components/modules
* This will cause the BTL components to discover the available
* network options on this machine, and post proper modex informaiton.
*/
if( OMPI_SUCCESS != (ret = mca_btl_base_select(OPAL_ENABLE_PROGRESS_THREADS,
OMPI_ENABLE_THREAD_MULTIPLE) ) ) {
opal_output(0, "bml:r2: ft_event(Restart): Failed to select in BTL framework\n");
return ret;
}
/*
* Clear some structures so we can properly repopulate them
*/
mca_bml_r2.btls_added = false;
for(p = 0; p < (int)num_procs; ++p) {
if( NULL != procs[p]->proc_endpoints[OMPI_PROC_ENDPOINT_TAG_BML]) {
OBJ_RELEASE(procs[p]->proc_endpoints[OMPI_PROC_ENDPOINT_TAG_BML]);
procs[p]->proc_endpoints[OMPI_PROC_ENDPOINT_TAG_BML] = NULL;
}
OBJ_RELEASE(procs[p]);
}
if( NULL != procs ) {
free(procs);
procs = NULL;
}
}
else if(OPAL_CRS_TERM == state ) {
;
}
else {
;
}
#endif
return OMPI_SUCCESS;
}
