153 строки
4.9 KiB
C
153 строки
4.9 KiB
C
/*
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* Copyright (c) 2004-2005 The Trustees of Indiana University.
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* All rights reserved.
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* Copyright (c) 2004-2005 The Trustees of the University of Tennessee.
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* All rights reserved.
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* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
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* University of Stuttgart. All rights reserved.
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* Copyright (c) 2004-2005 The Regents of the University of California.
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* 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 "ompi_config.h"
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#include "class/opal_hash_table.h"
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#include "mca/pml/base/pml_base_module_exchange.h"
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#include "btl_openib.h"
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#include "btl_openib_proc.h"
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static void mca_btl_openib_proc_construct(mca_btl_openib_proc_t* proc);
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static void mca_btl_openib_proc_destruct(mca_btl_openib_proc_t* proc);
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OBJ_CLASS_INSTANCE(mca_btl_openib_proc_t,
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opal_list_item_t, mca_btl_openib_proc_construct,
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mca_btl_openib_proc_destruct);
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void mca_btl_openib_proc_construct(mca_btl_openib_proc_t* proc)
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{
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proc->proc_ompi = 0;
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proc->proc_addr_count = 0;
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proc->proc_endpoints = 0;
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proc->proc_endpoint_count = 0;
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OBJ_CONSTRUCT(&proc->proc_lock, opal_mutex_t);
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/* add to list of all proc instance */
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OPAL_THREAD_LOCK(&mca_btl_openib_component.ib_lock);
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opal_list_append(&mca_btl_openib_component.ib_procs, &proc->super);
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OPAL_THREAD_UNLOCK(&mca_btl_openib_component.ib_lock);
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}
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/*
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* Cleanup ib proc instance
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*/
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void mca_btl_openib_proc_destruct(mca_btl_openib_proc_t* proc)
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{
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/* remove from list of all proc instances */
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OPAL_THREAD_LOCK(&mca_btl_openib_component.ib_lock);
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opal_list_remove_item(&mca_btl_openib_component.ib_procs, &proc->super);
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OPAL_THREAD_UNLOCK(&mca_btl_openib_component.ib_lock);
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/* release resources */
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if(NULL != proc->proc_endpoints) {
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free(proc->proc_endpoints);
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}
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}
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/*
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* Look for an existing IB process instances based on the associated
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* ompi_proc_t instance.
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*/
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static mca_btl_openib_proc_t* mca_btl_openib_proc_lookup_ompi(ompi_proc_t* ompi_proc)
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{
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mca_btl_openib_proc_t* ib_proc;
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OPAL_THREAD_LOCK(&mca_btl_openib_component.ib_lock);
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for(ib_proc = (mca_btl_openib_proc_t*)
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opal_list_get_first(&mca_btl_openib_component.ib_procs);
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ib_proc != (mca_btl_openib_proc_t*)
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opal_list_get_end(&mca_btl_openib_component.ib_procs);
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ib_proc = (mca_btl_openib_proc_t*)opal_list_get_next(ib_proc)) {
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if(ib_proc->proc_ompi == ompi_proc) {
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OPAL_THREAD_UNLOCK(&mca_btl_openib_component.ib_lock);
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return ib_proc;
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}
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}
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OPAL_THREAD_UNLOCK(&mca_btl_openib_component.ib_lock);
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return NULL;
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}
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/*
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* Create a IB process structure. There is a one-to-one correspondence
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* between a ompi_proc_t and a mca_btl_openib_proc_t instance. We cache
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* additional data (specifically the list of mca_btl_openib_endpoint_t instances,
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* and published addresses) associated w/ a given destination on this
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* datastructure.
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*/
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mca_btl_openib_proc_t* mca_btl_openib_proc_create(ompi_proc_t* ompi_proc)
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{
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mca_btl_openib_proc_t* module_proc = NULL;
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/* Check if we have already created a IB proc
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* structure for this ompi process */
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module_proc = mca_btl_openib_proc_lookup_ompi(ompi_proc);
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if(module_proc != NULL) {
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/* Gotcha! */
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return module_proc;
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}
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/* Oops! First time, gotta create a new IB proc
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* out of the ompi_proc ... */
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module_proc = OBJ_NEW(mca_btl_openib_proc_t);
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/* Initialize number of peer */
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module_proc->proc_endpoint_count = 0;
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module_proc->proc_ompi = ompi_proc;
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/* build a unique identifier (of arbitrary
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* size) to represent the proc */
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module_proc->proc_guid = ompi_proc->proc_name;
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/* IB module doesn't have addresses exported at
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* initialization, so the addr_count is set to one. */
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module_proc->proc_addr_count = 1;
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/* XXX: Right now, there can be only 1 peer associated
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* with a proc. Needs a little bit change in
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* mca_btl_openib_proc_t to allow on demand increasing of
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* number of endpoints for this proc */
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module_proc->proc_endpoints = (mca_btl_base_endpoint_t**)
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malloc(module_proc->proc_addr_count * sizeof(mca_btl_base_endpoint_t*));
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if(NULL == module_proc->proc_endpoints) {
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OBJ_RELEASE(module_proc);
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return NULL;
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}
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return module_proc;
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}
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/*
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* Note that this routine must be called with the lock on the process
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* already held. Insert a btl instance into the proc array and assign
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* it an address.
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*/
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int mca_btl_openib_proc_insert(mca_btl_openib_proc_t* module_proc,
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mca_btl_base_endpoint_t* module_endpoint)
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{
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/* insert into endpoint array */
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module_endpoint->endpoint_proc = module_proc;
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module_proc->proc_endpoints[module_proc->proc_endpoint_count++] = module_endpoint;
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return OMPI_SUCCESS;
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}
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