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;
27 // FIXME: better algorithm, maybe some kind of balanced tree? or a heap?
29 xbt_fifo_foreach(request_queue, request_item, request, smpi_mpi_request_t) {
30 xbt_fifo_foreach(message_queue, message_item, message,
31 smpi_received_message_t) {
33 if (request->comm == message->comm &&
34 (MPI_ANY_SOURCE == request->src || request->src == message->src)
35 && (MPI_ANY_TAG == request->tag || request->tag == message->tag)) {
36 xbt_fifo_remove_item(request_queue, request_item);
37 xbt_fifo_free_item(request_item);
38 xbt_fifo_remove_item(message_queue, message_item);
39 xbt_fifo_free_item(message_item);
49 if (NULL != request) {
53 SIMIX_mutex_lock(request->mutex);
54 memcpy(request->buf, message->buf,
55 request->datatype->size * request->count);
56 request->src = message->src;
57 request->data = message->data;
58 request->forward = message->forward;
60 if (0 == request->forward) {
61 request->completed = 1;
62 SIMIX_cond_broadcast(request->cond);
64 request->src = request->comm->index_to_rank_map[index];
65 request->dst = (request->src + 1) % request->comm->size;
66 smpi_mpi_isend(request);
69 SIMIX_mutex_unlock(request->mutex);
71 xbt_free(message->buf);
72 xbt_mallocator_release(smpi_global->message_mallocator, message);
74 } else if (mydata->finalize > 0) { /* main wants me to die and nothing to do */
75 // FIXME: display the list of remaining requests and messages (user code synchronization faulty?)
77 SIMIX_cond_signal(mydata->cond);
80 SIMIX_process_suspend(self);