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/*
* Copyright (c) 2013-2020 The University of Tennessee and The University
* of Tennessee Research Foundation. All rights
* reserved.
* Copyright (c) 2013-2017 Inria. All rights reserved.
* Copyright (c) 2015 Bull SAS. All rights reserved.
* Copyright (c) 2015-2019 Research Organization for Information Science
* and Technology (RIST). All rights reserved.
* Copyright (c) 2018 IBM Corporation. All rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#include "ompi_config.h"
#include "pml_monitoring.h"
#include "ompi/constants.h"
#include "ompi/mca/pml/base/base.h"
#include "ompi/mca/common/monitoring/common_monitoring.h"
#include "opal/mca/base/mca_base_component_repository.h"
static int mca_pml_monitoring_active = 0;
mca_pml_base_component_t pml_selected_component = {{0}};
mca_pml_base_module_t pml_selected_module = {0};
mca_pml_monitoring_module_t mca_pml_monitoring_module = {
.pml_add_procs = mca_pml_monitoring_add_procs,
.pml_del_procs = mca_pml_monitoring_del_procs,
.pml_enable = mca_pml_monitoring_enable,
.pml_progress = NULL,
.pml_add_comm = mca_pml_monitoring_add_comm,
.pml_del_comm = mca_pml_monitoring_del_comm,
#if OPAL_ENABLE_FT_MPI
.pml_revoke_comm = mca_pml_monitoring_revoke_comm,
#endif
.pml_irecv_init = mca_pml_monitoring_irecv_init,
.pml_irecv = mca_pml_monitoring_irecv,
.pml_recv = mca_pml_monitoring_recv,
.pml_isend_init = mca_pml_monitoring_isend_init,
.pml_isend = mca_pml_monitoring_isend,
.pml_send = mca_pml_monitoring_send,
.pml_iprobe = mca_pml_monitoring_iprobe,
.pml_probe = mca_pml_monitoring_probe,
.pml_start = mca_pml_monitoring_start,
.pml_improbe = mca_pml_monitoring_improbe,
.pml_mprobe = mca_pml_monitoring_mprobe,
.pml_imrecv = mca_pml_monitoring_imrecv,
.pml_mrecv = mca_pml_monitoring_mrecv,
.pml_dump = mca_pml_monitoring_dump,
.pml_max_contextid = 65535,
.pml_max_tag = INT_MAX,
.pml_flags = 0 /* flags */
};
/**
* This PML monitors only the processes in the MPI_COMM_WORLD. As OMPI is now lazily
* adding peers on the first call to add_procs we need to check how many processes
* are in the MPI_COMM_WORLD to create the storage with the right size.
*/
int mca_pml_monitoring_add_procs(struct ompi_proc_t **procs,
size_t nprocs)
{
int ret = mca_common_monitoring_add_procs(procs, nprocs);
if( OMPI_SUCCESS == ret )
ret = pml_selected_module.pml_add_procs(procs, nprocs);
return ret;
}
/**
* Pass the information down the PML stack.
*/
int mca_pml_monitoring_del_procs(struct ompi_proc_t **procs,
size_t nprocs)
{
return pml_selected_module.pml_del_procs(procs, nprocs);
}
int mca_pml_monitoring_dump(struct ompi_communicator_t* comm,
int verbose)
{
return pml_selected_module.pml_dump(comm, verbose);
}
int mca_pml_monitoring_enable(bool enable)
{
return pml_selected_module.pml_enable(enable);
}
static int mca_pml_monitoring_component_open(void)
{
/* CF: What if we are the only PML available ?? */
if( mca_common_monitoring_enabled ) {
opal_pointer_array_add(&mca_pml_base_pml,
strdup(mca_pml_monitoring_component.pmlm_version.mca_component_name));
}
return OMPI_SUCCESS;
}
static mca_pml_base_module_t*
mca_pml_monitoring_component_init(int* priority,
bool enable_progress_threads,
bool enable_mpi_threads)
{
if( (OMPI_SUCCESS == mca_common_monitoring_init()) &&
mca_common_monitoring_enabled ) {
*priority = 0; /* I'm up but don't select me */
return &mca_pml_monitoring_module;
}
return NULL;
}
static int mca_pml_monitoring_component_finish(void)
{
if( !mca_common_monitoring_enabled )
return OMPI_SUCCESS;
if( !mca_pml_monitoring_active ) {
/* The monitoring component priority is always low to guarantee that the component
* is never selected. Thus, the first time component_finish is called it is right
* after the selection of the best PML was done, and the perfect moment to intercept
* it. At this point we remove ourselves from ompi_pml_base_framework.framework_components
* so that the component never gets closed and unloaded and it's VARs are safe for
* the rest of the execution.
*/
mca_pml_base_component_t *component = NULL;
mca_base_component_list_item_t *cli = NULL;
OPAL_LIST_FOREACH(cli, &ompi_pml_base_framework.framework_components, mca_base_component_list_item_t) {
component = (mca_pml_base_component_t *) cli->cli_component;
if( component == &mca_pml_monitoring_component ) {
opal_list_remove_item(&ompi_pml_base_framework.framework_components, (opal_list_item_t*)cli);
OBJ_RELEASE(cli);
break;
}
}
/**
* We are supposed to monitor the execution. Save the winner PML component and
* module, and swap it with ourselves. Increase our refcount so that we are
* not dlclose.
*/
/* Save a copy of the selected PML */
pml_selected_component = mca_pml_base_selected_component;
pml_selected_module = mca_pml;
/* Install our interception layer */
mca_pml_base_selected_component = mca_pml_monitoring_component;
mca_pml = mca_pml_monitoring_module;
/* Restore some of the original values: progress, flags, tags and context id */
mca_pml.pml_progress = pml_selected_module.pml_progress;
mca_pml.pml_max_contextid = pml_selected_module.pml_max_contextid;
mca_pml.pml_max_tag = pml_selected_module.pml_max_tag;
/* Add MCA_PML_BASE_FLAG_REQUIRE_WORLD flag to ensure the hashtable is properly initialized */
mca_pml.pml_flags = pml_selected_module.pml_flags | MCA_PML_BASE_FLAG_REQUIRE_WORLD;
mca_pml_monitoring_active = 1;
} else {
/**
* This is the second call to component_finalize, and the component is actively
* intercepting the calls to the best PML. Time to stop and cleanly finalize ourself.
*/
/* Restore the original PML */
mca_pml_base_selected_component = pml_selected_component;
mca_pml = pml_selected_module;
/* Redirect the close call to the original PML */
pml_selected_component.pmlm_finalize();
/* Free internal data structure */
mca_common_monitoring_finalize();
/**
* We are in the compoenent code itself, we need to prevent the dlloader from
* removing the code. This will result in minimal memory leaks, but it is the only
* way to remove most of the references to the component (including the *vars).
*/
mca_base_component_repository_retain_component(mca_pml_monitoring_component.pmlm_version.mca_type_name,
mca_pml_monitoring_component.pmlm_version.mca_component_name);
/* Release all memory and be gone. */
mca_base_component_close((mca_base_component_t*)&mca_pml_monitoring_component,
ompi_pml_base_framework.framework_output);
}
return OMPI_SUCCESS;
}
mca_pml_base_component_2_1_0_t mca_pml_monitoring_component = {
/* First, the mca_base_component_t struct containing meta
information about the component itself */
.pmlm_version = {
MCA_PML_BASE_VERSION_2_1_0,
.mca_component_name = "monitoring", /* MCA component name */
MCA_MONITORING_MAKE_VERSION,
.mca_open_component = mca_pml_monitoring_component_open, /* component open */
.mca_close_component = NULL, /* component close */
.mca_register_component_params = mca_common_monitoring_register
},
.pmlm_data = {
/* The component is checkpoint ready */
MCA_BASE_METADATA_PARAM_CHECKPOINT
},
.pmlm_init = mca_pml_monitoring_component_init, /* component init */
.pmlm_finalize = mca_pml_monitoring_component_finish /* component finalize */
};
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