static UCS_F_ALWAYS_INLINE void
ucp_tag_recv_common(ucp_worker_h worker, void *buffer, size_t count,
uintptr_t datatype, ucp_tag_t tag, ucp_tag_t tag_mask,
ucp_request_t *req, uint32_t req_flags, ucp_tag_recv_callback_t cb,
ucp_recv_desc_t *rdesc, const char *debug_name)
{
unsigned common_flags = UCP_REQUEST_FLAG_RECV | UCP_REQUEST_FLAG_EXPECTED;
ucp_eager_first_hdr_t *eagerf_hdr;
ucp_request_queue_t *req_queue;
uct_memory_type_t mem_type;
size_t hdr_len, recv_len;
ucs_status_t status;
uint64_t msg_id;
ucp_trace_req(req, "%s buffer %p dt 0x%lx count %zu tag %"PRIx64"/%"PRIx64,
debug_name, buffer, datatype, count, tag, tag_mask);
/* First, check the fast path case - single fragment
* in this case avoid initializing most of request fields
* */
if (ucs_likely((rdesc != NULL) && (rdesc->flags & UCP_RECV_DESC_FLAG_EAGER_ONLY))) {
UCS_PROFILE_REQUEST_EVENT(req, "eager_only_match", 0);
UCP_WORKER_STAT_EAGER_MSG(worker, rdesc->flags);
UCP_WORKER_STAT_EAGER_CHUNK(worker, UNEXP);
if (ucs_unlikely(rdesc->flags & UCP_RECV_DESC_FLAG_EAGER_SYNC)) {
ucp_tag_eager_sync_send_ack(worker, rdesc + 1, rdesc->flags);
}
req->flags = UCP_REQUEST_FLAG_RECV | req_flags;
hdr_len = rdesc->payload_offset;
recv_len = rdesc->length - hdr_len;
req->recv.tag.info.sender_tag = ucp_rdesc_get_tag(rdesc);
req->recv.tag.info.length = recv_len;
ucp_memory_type_detect_mds(worker->context, buffer, recv_len, &mem_type);
status = ucp_dt_unpack_only(worker, buffer, count, datatype, mem_type,
(void*)(rdesc + 1) + hdr_len, recv_len, 1);
ucp_recv_desc_release(rdesc);
if (req_flags & UCP_REQUEST_FLAG_CALLBACK) {
cb(req + 1, status, &req->recv.tag.info);
}
ucp_tag_recv_request_completed(req, status, &req->recv.tag.info,
debug_name);
return;
}
/* Initialize receive request */
req->status = UCS_OK;
req->recv.worker = worker;
req->recv.buffer = buffer;
req->recv.datatype = datatype;
ucp_dt_recv_state_init(&req->recv.state, buffer, datatype, count);
if (!UCP_DT_IS_CONTIG(datatype)) {
common_flags |= UCP_REQUEST_FLAG_BLOCK_OFFLOAD;
}
req->flags = common_flags | req_flags;
req->recv.length = ucp_dt_length(datatype, count, buffer,
&req->recv.state);
ucp_memory_type_detect_mds(worker->context, buffer, req->recv.length, &mem_type);
req->recv.mem_type = mem_type;
req->recv.tag.tag = tag;
req->recv.tag.tag_mask = tag_mask;
req->recv.tag.cb = cb;
if (ucs_log_is_enabled(UCS_LOG_LEVEL_TRACE_REQ)) {
req->recv.tag.info.sender_tag = 0;
}
if (ucs_unlikely(rdesc == NULL)) {
/* If not found on unexpected, wait until it arrives.
* If was found but need this receive request for later completion, save it */
req_queue = ucp_tag_exp_get_queue(&worker->tm, tag, tag_mask);
/* If offload supported, post this tag to transport as well.
* TODO: need to distinguish the cases when posting is not needed. */
ucp_tag_offload_try_post(worker, req, req_queue);
ucp_tag_exp_push(&worker->tm, req_queue, req);
ucs_trace_req("%s returning expected request %p (%p)", debug_name, req,
req + 1);
return;
}
/* Check rendezvous case */
if (ucs_unlikely(rdesc->flags & UCP_RECV_DESC_FLAG_RNDV)) {
ucp_rndv_matched(worker, req, (void*)(rdesc + 1));
UCP_WORKER_STAT_RNDV(worker, UNEXP);
ucp_recv_desc_release(rdesc);
return;
}
if (ucs_unlikely(rdesc->flags & UCP_RECV_DESC_FLAG_EAGER_SYNC)) {
ucp_tag_eager_sync_send_ack(worker, rdesc + 1, rdesc->flags);
}
UCP_WORKER_STAT_EAGER_MSG(worker, rdesc->flags);
ucs_assert(rdesc->flags & UCP_RECV_DESC_FLAG_EAGER);
eagerf_hdr = (void*)(rdesc + 1);
req->recv.tag.info.sender_tag = ucp_rdesc_get_tag(rdesc);
req->recv.tag.info.length =
req->recv.tag.remaining = eagerf_hdr->total_len;
/* process first fragment */
UCP_WORKER_STAT_EAGER_CHUNK(worker, UNEXP);
msg_id = eagerf_hdr->msg_id;
status = ucp_tag_recv_request_process_rdesc(req, rdesc, 0);
ucs_assert(status == UCS_INPROGRESS);
/* process additional fragments */
ucp_tag_frag_list_process_queue(&worker->tm, req, msg_id
UCS_STATS_ARG(UCP_WORKER_STAT_TAG_RX_EAGER_CHUNK_UNEXP));
}
static UCS_F_ALWAYS_INLINE ucs_status_t
ucp_tag_search_unexp(ucp_worker_h worker, void *buffer, size_t buffer_size,
ucp_datatype_t datatype, ucp_tag_t tag, uint64_t tag_mask,
ucp_request_t *req, ucp_tag_recv_info_t *info,
ucp_tag_recv_callback_t cb, ucp_recv_desc_t *first_rdesc,
unsigned *save_rreq)
{
ucp_context_h context = worker->context;
ucp_recv_desc_t *rdesc, *next;
ucs_list_link_t *list;
ucs_status_t status;
ucp_tag_t recv_tag;
unsigned flags;
int i_list;
/* fast check of global unexpected queue */
if (ucs_list_is_empty(&context->tm.unexpected.all)) {
return UCS_INPROGRESS;
}
if (first_rdesc == NULL) {
if (tag_mask == UCP_TAG_MASK_FULL) {
list = ucp_tag_unexp_get_list_for_tag(&context->tm, tag);
if (ucs_list_is_empty(list)) {
return UCS_INPROGRESS;
}
i_list = UCP_RDESC_HASH_LIST;
} else {
list = &context->tm.unexpected.all;
i_list = UCP_RDESC_ALL_LIST;
}
rdesc = ucs_list_head(list, ucp_recv_desc_t, list[i_list]);
} else {
ucs_assert(tag_mask == UCP_TAG_MASK_FULL);
list = ucp_tag_unexp_get_list_for_tag(&context->tm, tag);
i_list = UCP_RDESC_HASH_LIST;
rdesc = first_rdesc;
}
do {
recv_tag = ucp_rdesc_get_tag(rdesc);
flags = rdesc->flags;
ucs_trace_req("searching for %"PRIx64"/%"PRIx64"/%"PRIx64" offset %zu, "
"checking desc %p %"PRIx64" %c%c%c%c%c",
tag, tag_mask, info->sender_tag, req->recv.state.offset,
rdesc, recv_tag,
(flags & UCP_RECV_DESC_FLAG_FIRST) ? 'f' : '-',
(flags & UCP_RECV_DESC_FLAG_LAST) ? 'l' : '-',
(flags & UCP_RECV_DESC_FLAG_EAGER) ? 'e' : '-',
(flags & UCP_RECV_DESC_FLAG_SYNC) ? 's' : '-',
(flags & UCP_RECV_DESC_FLAG_RNDV) ? 'r' : '-');
if (ucp_tag_recv_is_match(recv_tag, flags, tag, tag_mask,
req->recv.state.offset, info->sender_tag))
{
ucp_tag_log_match(recv_tag, rdesc->length - rdesc->hdr_len, req, tag,
tag_mask, req->recv.state.offset, "unexpected");
ucp_tag_unexp_remove(rdesc);
if (rdesc->flags & UCP_RECV_DESC_FLAG_EAGER) {
UCS_PROFILE_REQUEST_EVENT(req, "eager_match", 0);
status = ucp_eager_unexp_match(worker, rdesc, recv_tag, flags,
buffer, buffer_size, datatype,
&req->recv.state, info);
ucs_trace_req("release receive descriptor %p", rdesc);
if (status != UCS_INPROGRESS) {
goto out_release_desc;
}
next = ucp_tag_unexp_list_next(rdesc, i_list);
ucp_tag_unexp_desc_release(rdesc);
rdesc = next;
} else {
ucs_assert_always(rdesc->flags & UCP_RECV_DESC_FLAG_RNDV);
*save_rreq = 0;
req->recv.buffer = buffer;
req->recv.length = buffer_size;
req->recv.datatype = datatype;
req->recv.cb = cb;
ucp_rndv_matched(worker, req, (void*)(rdesc + 1));
UCP_WORKER_STAT_RNDV(worker, UNEXP);
status = UCS_INPROGRESS;
goto out_release_desc;
}
} else {
rdesc = ucp_tag_unexp_list_next(rdesc, i_list);
}
} while (&rdesc->list[i_list] != list);
return UCS_INPROGRESS;
out_release_desc:
ucp_tag_unexp_desc_release(rdesc);
return status;
}
