227 строки
8.6 KiB
C
227 строки
8.6 KiB
C
/*
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* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
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* University Research and Technology
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* Corporation. All rights reserved.
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* Copyright (c) 2004-2005 The University of Tennessee and The University
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* of Tennessee Research Foundation. All rights
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* 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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/**
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* @file
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*/
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#ifndef MCA_PML_DR_COMM_H
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#define MCA_PML_DR_COMM_H
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#include "opal/threads/mutex.h"
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#include "opal/threads/condition.h"
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#include "opal/class/opal_list.h"
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#include "ompi/communicator/communicator.h"
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#include "ompi/proc/proc.h"
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#if defined(c_plusplus) || defined(__cplusplus)
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extern "C" {
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#endif
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struct mca_pml_dr_range_t{
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opal_list_item_t super;
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uint32_t vfrag_id_high;
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uint32_t vfrag_id_low;
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};
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typedef struct mca_pml_dr_range_t mca_pml_dr_range_t;
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OMPI_DECLSPEC OBJ_CLASS_DECLARATION(mca_pml_dr_range_t);
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struct mca_pml_dr_comm_proc_t {
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opal_object_t super;
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uint16_t expected_sequence; /**< send message sequence number - receiver side */
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uint32_t vfrag_id; /**< virtual fragment identifier */
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#if OMPI_HAVE_THREAD_SUPPORT
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volatile int32_t send_sequence; /**< send side sequence number */
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#else
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int32_t send_sequence; /**< send side sequence number */
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#endif
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opal_list_t frags_cant_match; /**< out-of-order fragment queues */
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opal_list_t specific_receives; /**< queues of unmatched specific receives */
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opal_list_t unexpected_frags; /**< unexpected fragment queues */
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opal_list_t matched_receives; /**< list of in-progress matched receives */
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ompi_proc_t* ompi_proc; /**< back pointer to ompi_proc_t */
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opal_list_t vfrag_ids; /**< list of vfrags id's that have been seen */
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mca_pml_dr_range_t* vfrag_ids_current; /**< a pointer to the last place we were in the list */
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};
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typedef struct mca_pml_dr_comm_proc_t mca_pml_dr_comm_proc_t;
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/**
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* Cached on ompi_communicator_t to hold queues/state
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* used by the PML<->PTL interface for matching logic.
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*/
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struct mca_pml_comm_t {
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opal_object_t super;
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#if OMPI_HAVE_THREAD_SUPPORT
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volatile uint32_t recv_sequence; /**< recv request sequence number - receiver side */
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#else
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uint32_t recv_sequence; /**< recv request sequence number - receiver side */
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#endif
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opal_mutex_t matching_lock; /**< matching lock */
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opal_list_t wild_receives; /**< queue of unmatched wild (source process not specified) receives */
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mca_pml_dr_comm_proc_t* procs;
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size_t num_procs;
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};
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typedef struct mca_pml_comm_t mca_pml_dr_comm_t;
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OMPI_DECLSPEC OBJ_CLASS_DECLARATION(mca_pml_dr_comm_t);
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/**
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* Initialize an instance of mca_pml_dr_comm_t based on the communicator size.
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*
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* @param dr_comm Instance of mca_pml_dr_comm_t
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* @param pml_comm Communicator
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* @return OMPI_SUCCESS or error status on failure.
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*/
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OMPI_DECLSPEC extern int mca_pml_dr_comm_init(mca_pml_dr_comm_t* dr_comm, ompi_communicator_t* ompi_comm);
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/**
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* Look for duplicate sequence number in current range.
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* Must be called w/ matching lock held.
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*/
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static inline bool mca_pml_dr_comm_proc_check_duplicate(
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mca_pml_dr_comm_proc_t* dr_proc,
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uint32_t vfrag_id)
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{
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mca_pml_dr_range_t* item;
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int8_t direction = 0; /* 1 is next, -1 is previous */
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item = dr_proc->vfrag_ids_current;
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while(true) {
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if(NULL == item) {
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return false;
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} else if(item->vfrag_id_high >= vfrag_id && item->vfrag_id_low <= vfrag_id) {
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dr_proc->vfrag_ids_current = (mca_pml_dr_range_t*) item;
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return true;
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} else if(vfrag_id > item->vfrag_id_high && direction != -1) {
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direction = 1;
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item = (mca_pml_dr_range_t*) opal_list_get_next(item);
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} else if(vfrag_id < item->vfrag_id_low && direction != 1) {
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direction = -1;
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item = (mca_pml_dr_range_t*) opal_list_get_prev(item);
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} else {
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return false;
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}
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}
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}
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/*
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* Must be called w/ matching lock held
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*/
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static inline void mca_pml_dr_comm_proc_set_vid(mca_pml_dr_comm_proc_t* dr_comm_proc, uint32_t vfrag_id)
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{
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opal_list_t* vfrag_ids = &dr_comm_proc->vfrag_ids;
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mca_pml_dr_range_t* item = dr_comm_proc->vfrag_ids_current;
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int8_t direction = 0; /* 1 is next, -1 is previous */
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mca_pml_dr_range_t *new_item, *next_item, *prev_item;
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while(true) {
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if( item == NULL || item == (mca_pml_dr_range_t*) &vfrag_ids->opal_list_tail ) {
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new_item = OBJ_NEW(mca_pml_dr_range_t);
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new_item->vfrag_id_low = new_item->vfrag_id_high = vfrag_id;
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opal_list_append(vfrag_ids, (opal_list_item_t*) new_item);
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dr_comm_proc->vfrag_ids_current = (mca_pml_dr_range_t*) new_item;
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return;
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} else if( item == (mca_pml_dr_range_t*) &vfrag_ids->opal_list_head ) {
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new_item = OBJ_NEW(mca_pml_dr_range_t);
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new_item->vfrag_id_low = new_item->vfrag_id_high = vfrag_id;
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opal_list_prepend(vfrag_ids, (opal_list_item_t*) new_item);
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dr_comm_proc->vfrag_ids_current = (mca_pml_dr_range_t*) new_item;
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return;
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} else if(item->vfrag_id_high >= vfrag_id && item->vfrag_id_low <= vfrag_id ) {
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dr_comm_proc->vfrag_ids_current = (mca_pml_dr_range_t*) item;
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return;
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} else if((item->vfrag_id_high + 1) == vfrag_id) {
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next_item = (mca_pml_dr_range_t*) opal_list_get_next(item);
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/* try to consolidate */
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if(next_item && next_item->vfrag_id_low == (vfrag_id+1)) {
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item->vfrag_id_high = next_item->vfrag_id_high;
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opal_list_remove_item(vfrag_ids, (opal_list_item_t*) next_item);
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OBJ_RELEASE(next_item);
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} else {
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item->vfrag_id_high = vfrag_id;
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}
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dr_comm_proc->vfrag_ids_current = (mca_pml_dr_range_t*) item;
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return;
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} else if((item->vfrag_id_low - 1) == vfrag_id) {
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prev_item = (mca_pml_dr_range_t*) opal_list_get_prev(item);
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/* try to consolidate */
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if(prev_item && prev_item->vfrag_id_high == (vfrag_id-1)) {
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item->vfrag_id_low = prev_item->vfrag_id_low;
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opal_list_remove_item(vfrag_ids, (opal_list_item_t*) prev_item);
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OBJ_RELEASE(prev_item);
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} else {
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item->vfrag_id_low = vfrag_id;
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}
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dr_comm_proc->vfrag_ids_current = (mca_pml_dr_range_t*) item;
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return;
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} else if(vfrag_id > item->vfrag_id_high ) {
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if(direction == -1) {
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/* we have gone back in the list, and we went one item too far */
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new_item = OBJ_NEW(mca_pml_dr_range_t);
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new_item->vfrag_id_low = new_item->vfrag_id_high = vfrag_id;
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/* insert new_item directly before item */
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opal_list_insert_pos(vfrag_ids,
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(opal_list_item_t*) item,
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(opal_list_item_t*) new_item);
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dr_comm_proc->vfrag_ids_current = (mca_pml_dr_range_t*) new_item;
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return;
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} else {
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direction = 1;
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item = (mca_pml_dr_range_t*) opal_list_get_next(item);
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}
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} else if(vfrag_id < item->vfrag_id_low) {
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if(direction == 1) {
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/* we have gone forward in the list, and we went one item too far */
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new_item = OBJ_NEW(mca_pml_dr_range_t);
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next_item = (mca_pml_dr_range_t*) opal_list_get_next(item);
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if(NULL == next_item) {
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opal_list_append(vfrag_ids, (opal_list_item_t*) new_item);
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} else {
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opal_list_insert_pos(vfrag_ids,
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(opal_list_item_t*) next_item,
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(opal_list_item_t*) new_item);
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}
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dr_comm_proc->vfrag_ids_current = (mca_pml_dr_range_t*) new_item;
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return;
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} else {
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direction = -1;
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item = (mca_pml_dr_range_t*) opal_list_get_prev(item);
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}
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} else {
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return;
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}
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}
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}
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#if defined(c_plusplus) || defined(__cplusplus)
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}
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#endif
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#endif
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