288 строки
10 KiB
C
288 строки
10 KiB
C
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/*
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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 "mca/pml/pml.h"
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#include "mca/bmi/bmi.h"
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#include "pml_ob1_comm.h"
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#include "pml_ob1_recvreq.h"
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#include "pml_ob1_recvfrag.h"
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#include "pml_ob1_sendreq.h"
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static mca_pml_ob1_recv_frag_t* mca_pml_ob1_recv_request_match_specific_proc(
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mca_pml_ob1_recv_request_t* request, mca_pml_ob1_comm_proc_t* proc);
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static int mca_pml_ob1_recv_request_fini(struct ompi_request_t** request)
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{
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MCA_PML_GEN2_FINI(request);
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return OMPI_SUCCESS;
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}
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static int mca_pml_ob1_recv_request_free(struct ompi_request_t** request)
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{
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MCA_PML_GEN2_FREE(request);
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return OMPI_SUCCESS;
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}
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static int mca_pml_ob1_recv_request_cancel(struct ompi_request_t* ompi_request, int complete)
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{
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mca_pml_ob1_recv_request_t* request = (mca_pml_ob1_recv_request_t*)ompi_request;
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mca_pml_ob1_comm_t* comm = request->req_recv.req_base.req_comm->c_pml_comm;
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if( true == ompi_request->req_complete ) { /* way to late to cancel this one */
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return OMPI_SUCCESS;
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}
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/* The rest should be protected behind the match logic lock */
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OMPI_THREAD_LOCK(&comm->matching_lock);
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if( OMPI_ANY_TAG == ompi_request->req_status.MPI_TAG ) { /* the match has not been already done */
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if( request->req_recv.req_base.req_peer == OMPI_ANY_SOURCE ) {
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ompi_list_remove_item( &comm->wild_receives, (ompi_list_item_t*)request );
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} else {
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mca_pml_ob1_comm_proc_t* proc = comm->procs + request->req_recv.req_base.req_peer;
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ompi_list_remove_item(&proc->specific_receives, (ompi_list_item_t*)request);
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}
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}
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OMPI_THREAD_UNLOCK(&comm->matching_lock);
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OMPI_THREAD_LOCK(&ompi_request_lock);
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ompi_request->req_status._cancelled = true;
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ompi_request->req_complete = true; /* mark it as completed so all the test/wait functions
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* on this particular request will finish */
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/* Now we have a problem if we are in a multi-threaded environment. We shou ld
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* broadcast the condition on the request in order to allow the other threa ds
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* to complete their test/wait functions.
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*/
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if(ompi_request_waiting) {
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ompi_condition_broadcast(&ompi_request_cond);
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}
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OMPI_THREAD_UNLOCK(&ompi_request_lock);
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return OMPI_SUCCESS;
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}
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static void mca_pml_ob1_recv_request_construct(mca_pml_ob1_recv_request_t* request)
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{
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request->req_recv.req_base.req_type = MCA_PML_REQUEST_RECV;
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request->req_recv.req_base.req_ompi.req_fini = mca_pml_ob1_recv_request_fini;
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request->req_recv.req_base.req_ompi.req_free = mca_pml_ob1_recv_request_free;
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request->req_recv.req_base.req_ompi.req_cancel = mca_pml_ob1_recv_request_cancel;
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}
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static void mca_pml_ob1_recv_request_destruct(mca_pml_ob1_recv_request_t* request)
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{
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}
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OBJ_CLASS_INSTANCE(
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mca_pml_ob1_recv_request_t,
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mca_pml_base_recv_request_t,
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mca_pml_ob1_recv_request_construct,
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mca_pml_ob1_recv_request_destruct);
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/*
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* Update the recv request status to reflect the number of bytes
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* received and actually delivered to the application.
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*/
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void mca_pml_ob1_recv_request_progress(
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mca_pml_ob1_recv_request_t* req,
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mca_bmi_base_module_t* bmi,
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mca_bmi_base_segment_t* segments,
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size_t num_segments)
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{
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size_t bytes_received = 0;
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size_t bytes_delivered = 0;
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mca_pml_ob1_hdr_t* hdr = (mca_pml_ob1_hdr_t*)segments->seg_addr.pval;
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switch(hdr->hdr_common.hdr_type) {
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case MCA_PML_GEN2_HDR_TYPE_MATCH:
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bytes_received = hdr->hdr_match.hdr_msg_length;
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break;
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case MCA_PML_GEN2_HDR_TYPE_RNDV:
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bytes_received = hdr->hdr_frag.hdr_frag_length;
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break;
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default:
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break;
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}
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bytes_delivered = bytes_received;
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OMPI_THREAD_LOCK(&ompi_request_lock);
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req->req_bytes_received += bytes_received;
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req->req_bytes_delivered += bytes_delivered;
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if (req->req_bytes_received >= req->req_recv.req_bytes_packed) {
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/* initialize request status */
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req->req_recv.req_base.req_ompi.req_status._count = req->req_bytes_delivered;
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req->req_recv.req_base.req_pml_complete = true;
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req->req_recv.req_base.req_ompi.req_complete = true;
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if(ompi_request_waiting) {
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ompi_condition_broadcast(&ompi_request_cond);
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}
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}
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OMPI_THREAD_UNLOCK(&ompi_request_lock);
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}
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/*
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* This routine is used to match a posted receive when the source process
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* is specified.
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*/
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void mca_pml_ob1_recv_request_match_specific(mca_pml_ob1_recv_request_t* request)
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{
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mca_pml_ob1_comm_t* comm = request->req_recv.req_base.req_comm->c_pml_comm;
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mca_pml_ob1_comm_proc_t* proc = comm->procs + request->req_recv.req_base.req_peer;
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mca_pml_ob1_recv_frag_t* frag;
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/* check for a specific match */
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OMPI_THREAD_LOCK(&comm->matching_lock);
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/* assign sequence number */
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request->req_recv.req_base.req_sequence = comm->recv_sequence++;
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if (ompi_list_get_size(&proc->unexpected_frags) > 0 &&
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(frag = mca_pml_ob1_recv_request_match_specific_proc(request, proc)) != NULL) {
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OMPI_THREAD_UNLOCK(&comm->matching_lock);
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mca_pml_ob1_recv_request_progress(request,frag->bmi,frag->segments,frag->num_segments);
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if( !((MCA_PML_REQUEST_IPROBE == request->req_recv.req_base.req_type) ||
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(MCA_PML_REQUEST_PROBE == request->req_recv.req_base.req_type)) ) {
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MCA_PML_GEN2_RECV_FRAG_RETURN(frag);
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}
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return; /* match found */
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}
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/* We didn't find any matches. Record this irecv so we can match
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* it when the message comes in.
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*/
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if(request->req_recv.req_base.req_type != MCA_PML_REQUEST_IPROBE) {
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ompi_list_append(&proc->specific_receives, (ompi_list_item_t*)request);
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}
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OMPI_THREAD_UNLOCK(&comm->matching_lock);
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}
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/*
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* this routine is used to try and match a wild posted receive - where
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* wild is determined by the value assigned to the source process
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*/
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void mca_pml_ob1_recv_request_match_wild(mca_pml_ob1_recv_request_t* request)
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{
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mca_pml_ob1_comm_t* comm = request->req_recv.req_base.req_comm->c_pml_comm;
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mca_pml_ob1_comm_proc_t* proc = comm->procs;
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size_t proc_count = comm->num_procs;
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size_t i;
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/*
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* Loop over all the outstanding messages to find one that matches.
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* There is an outer loop over lists of messages from each
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* process, then an inner loop over the messages from the
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* process.
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*/
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OMPI_THREAD_LOCK(&pml_comm->c_matching_lock);
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/* assign sequence number */
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request->req_recv.req_base.req_sequence = comm->recv_sequence++;
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for (i = 0; i < proc_count; i++) {
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mca_pml_ob1_recv_frag_t* frag;
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/* continue if no frags to match */
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if (ompi_list_get_size(&proc->unexpected_frags) == 0) {
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proc++;
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continue;
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}
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/* loop over messages from the current proc */
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if ((frag = mca_pml_ob1_recv_request_match_specific_proc(request, proc)) != NULL) {
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OMPI_THREAD_UNLOCK(&comm->matching_lock);
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mca_pml_ob1_recv_request_progress(request,frag->bmi,frag->segments,frag->num_segments);
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if( !((MCA_PML_REQUEST_IPROBE == request->req_recv.req_base.req_type) ||
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(MCA_PML_REQUEST_PROBE == request->req_recv.req_base.req_type)) ) {
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MCA_PML_GEN2_RECV_FRAG_RETURN(frag);
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}
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return; /* match found */
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}
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proc++;
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}
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/* We didn't find any matches. Record this irecv so we can match to
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* it when the message comes in.
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*/
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if(request->req_recv.req_base.req_type != MCA_PML_REQUEST_IPROBE)
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ompi_list_append(&comm->wild_receives, (ompi_list_item_t*)request);
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OMPI_THREAD_UNLOCK(&comm->matching_lock);
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}
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/*
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* this routine tries to match a posted receive. If a match is found,
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* it places the request in the appropriate matched receive list.
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*/
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static mca_pml_ob1_recv_frag_t* mca_pml_ob1_recv_request_match_specific_proc(
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mca_pml_ob1_recv_request_t* request,
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mca_pml_ob1_comm_proc_t* proc)
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{
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ompi_list_t* unexpected_frags = &proc->unexpected_frags;
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mca_pml_ob1_recv_frag_t* frag;
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mca_pml_ob1_match_hdr_t* hdr;
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int tag = request->req_recv.req_base.req_tag;
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if( OMPI_ANY_TAG == tag ) {
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for (frag = (mca_pml_ob1_recv_frag_t*)ompi_list_get_first(unexpected_frags);
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frag != (mca_pml_ob1_recv_frag_t*)ompi_list_get_end(unexpected_frags);
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frag = (mca_pml_ob1_recv_frag_t*)ompi_list_get_next(frag)) {
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hdr = &(frag->hdr.hdr_match);
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/* check first frag - we assume that process matching has been done already */
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if( hdr->hdr_tag >= 0 ) {
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goto find_fragment;
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}
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}
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} else {
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for (frag = (mca_pml_ob1_recv_frag_t*)ompi_list_get_first(unexpected_frags);
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frag != (mca_pml_ob1_recv_frag_t*)ompi_list_get_end(unexpected_frags);
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frag = (mca_pml_ob1_recv_frag_t*)ompi_list_get_next(frag)) {
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hdr = &(frag->hdr.hdr_match);
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/* check first frag - we assume that process matching has been done already */
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if ( tag == hdr->hdr_tag ) {
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/* we assume that the tag is correct from MPI point of view (ie. >= 0 ) */
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goto find_fragment;
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}
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}
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}
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return NULL;
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find_fragment:
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request->req_recv.req_bytes_packed = hdr->hdr_msg_length;
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request->req_recv.req_base.req_ompi.req_status.MPI_TAG = hdr->hdr_tag;
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request->req_recv.req_base.req_ompi.req_status.MPI_SOURCE = hdr->hdr_src;
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if( !((MCA_PML_REQUEST_IPROBE == request->req_recv.req_base.req_type) ||
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(MCA_PML_REQUEST_PROBE == request->req_recv.req_base.req_type)) ) {
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ompi_list_remove_item(unexpected_frags, (ompi_list_item_t*)frag);
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frag->request = request;
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}
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return frag;
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}
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