3 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(smpi_receiver, smpi,
4 "Logging specific to SMPI (receiver)");
6 int smpi_receiver(int argc, char *argv[])
8 smpi_process_data_t mydata = SIMIX_process_get_data(SIMIX_process_self());
10 int index = mydata->index;
12 xbt_fifo_t request_queue;
13 xbt_fifo_t message_queue;
15 smpi_mpi_request_t request;
16 smpi_received_message_t message;
18 xbt_fifo_item_t request_item;
19 xbt_fifo_item_t message_item;
21 self = SIMIX_process_self();
23 request_queue = mydata->pending_recv_request_queue;
24 message_queue = mydata->received_message_queue;
29 // FIXME: better algorithm, maybe some kind of balanced tree? or a heap?
31 xbt_fifo_foreach(request_queue, request_item, request, smpi_mpi_request_t) {
32 xbt_fifo_foreach(message_queue, message_item, message,
33 smpi_received_message_t) {
37 printf("[%s] try match (req_src=%d,msg_src=%d)x(req_tag=%d,msg_tag=%d)\n",
38 __FILE__,request->src,message->src,request->tag, message->tag);
40 if (request->comm == message->comm &&
41 (MPI_ANY_SOURCE == request->src || request->src == message->src)
42 && (MPI_ANY_TAG == request->tag || request->tag == message->tag)) {
43 xbt_fifo_remove_item(request_queue, request_item);
44 xbt_fifo_free_item(request_item);
45 xbt_fifo_remove_item(message_queue, message_item);
46 xbt_fifo_free_item(message_item);
48 printf("[%s] found match: req_src=%d,msg_src=%d)x(req_tag=%d,msg_tag=%d)\n",
49 __FILE__,request->src,message->src,request->tag, message->tag);
60 if (NULL != request) {
64 SIMIX_mutex_lock(request->mutex);
65 memcpy(request->buf, message->buf,
66 request->datatype->size * request->count);
67 request->src = message->src;
68 request->data = message->data;
69 request->forward = message->forward;
71 if (0 == request->forward) {
72 request->completed = 1;
73 SIMIX_cond_broadcast(request->cond);
75 request->src = request->comm->index_to_rank_map[index];
76 request->dst = (request->src + 1) % request->comm->size;
77 smpi_mpi_isend(request);
80 SIMIX_mutex_unlock(request->mutex);
82 xbt_free(message->buf);
83 xbt_mallocator_release(smpi_global->message_mallocator, message);
85 } else if (mydata->finalize > 0) { /* main wants me to die and nothing to do */
86 // FIXME: display the list of remaining requests and messages (user code synchronization faulty?)
88 SIMIX_cond_signal(mydata->cond);
91 SIMIX_process_suspend(self);