static UCS_F_NOINLINE
ucs_status_ptr_t ucp_tag_send_slow(ucp_ep_h ep, const void *buffer, size_t count,
uintptr_t datatype, ucp_tag_t tag,
ucp_send_callback_t cb)
{
ucp_request_t *req;
ucs_status_t status;
req = ucs_mpool_get_inline(&ep->worker->req_mp);
if (req == NULL) {
return UCS_STATUS_PTR(UCS_ERR_NO_MEMORY);
}
VALGRIND_MAKE_MEM_DEFINED(req + 1, ep->worker->context->config.request.size);
req->flags = 0;
req->cb.send = cb;
status = ucp_tag_send_start_req(ep, buffer, count, datatype, tag, req);
if (status != UCS_OK) {
return UCS_STATUS_PTR(status); /* UCS_OK also goes here */
}
if (!(req->flags & UCP_REQUEST_FLAG_COMPLETED)) {
ucp_ep_add_pending(ep, ep->uct_ep, req);
ucp_worker_progress(ep->worker);
}
ucs_trace_req("send_nb returning request %p", req);
return req + 1;
}
ucs_status_t ucp_get_nbi(ucp_ep_h ep, void *buffer, size_t length,
uint64_t remote_addr, ucp_rkey_h rkey)
{
ucp_ep_rma_config_t *rma_config;
ucs_status_t status;
uct_rkey_t uct_rkey;
size_t frag_length;
uct_ep_h uct_ep;
UCP_RMA_CHECK_PARAMS(buffer, length);
for (;;) {
UCP_EP_RESOLVE_RKEY_RMA(ep, rkey, uct_ep, uct_rkey, rma_config);
frag_length = ucs_min(rma_config->max_get_bcopy, length);
status = uct_ep_get_bcopy(uct_ep,
(uct_unpack_callback_t)memcpy,
(void*)buffer,
frag_length,
remote_addr,
uct_rkey,
NULL);
if (ucs_likely(status == UCS_OK || status == UCS_INPROGRESS)) {
/* Get was initiated */
length -= frag_length;
buffer += frag_length;
remote_addr += frag_length;
if (length == 0) {
break;
}
} else if (ucs_unlikely(status == UCS_ERR_NO_RESOURCE)) {
/* Out of resources - adding request for later schedule */
ucp_request_t *req;
req = ucs_mpool_get_inline(&ep->worker->req_mp);
if (req == NULL) {
/* can't allocate memory for request - abort */
status = UCS_ERR_NO_MEMORY;
break;
}
ucp_add_pending_rma(req, ep, uct_ep, buffer, length, remote_addr,
rkey, ucp_progress_get_nbi);
/* Mark it as in progress */
status = UCS_INPROGRESS;
break;
} else {
/* Error */
break;
}
}
return status;
}
void *ucs_mpool_get(ucs_mpool_t *mp)
{
return ucs_mpool_get_inline(mp);
}
ucs_status_t ucp_put_nbi(ucp_ep_h ep, const void *buffer, size_t length,
uint64_t remote_addr, ucp_rkey_h rkey)
{
ucp_ep_rma_config_t *rma_config;
ucs_status_t status;
uct_rkey_t uct_rkey;
ssize_t packed_len;
ucp_request_t *req;
uct_ep_h uct_ep;
UCP_RMA_CHECK_PARAMS(buffer, length);
for (;;) {
UCP_EP_RESOLVE_RKEY_RMA(ep, rkey, uct_ep, uct_rkey, rma_config);
if (length <= rma_config->max_put_short) {
/* Fast path for a single short message */
status = uct_ep_put_short(uct_ep, buffer, length, remote_addr,
uct_rkey);
if (ucs_likely(status != UCS_ERR_NO_RESOURCE)) {
/* Return on error or success */
break;
} else {
/* Out of resources - adding request for later schedule */
req = ucs_mpool_get_inline(&ep->worker->req_mp);
if (req == NULL) {
status = UCS_ERR_NO_MEMORY;
break;
}
ucp_add_pending_rma(req, ep, uct_ep, buffer, length, remote_addr,
rkey, ucp_progress_put_nbi);
status = UCS_INPROGRESS;
break;
}
} else {
/* Fragmented put */
if (length <= ucp_ep_config(ep)->bcopy_thresh) {
/* TBD: Should be replaced with bcopy */
packed_len = ucs_min(length, rma_config->max_put_short);
status = uct_ep_put_short(uct_ep, buffer, packed_len, remote_addr,
uct_rkey);
} else {
/* TBD: Use z-copy */
ucp_memcpy_pack_context_t pack_ctx;
pack_ctx.src = buffer;
pack_ctx.length =
ucs_min(length, rma_config->max_put_bcopy);
packed_len = uct_ep_put_bcopy(uct_ep, ucp_memcpy_pack, &pack_ctx,
remote_addr, uct_rkey);
status = (packed_len > 0) ? UCS_OK : (ucs_status_t)packed_len;
}
if (ucs_likely(status == UCS_OK || status == UCS_INPROGRESS)) {
length -= packed_len;
if (length == 0) {
/* Put is completed - return success */
break;
}
buffer += packed_len;
remote_addr += packed_len;
} else if (status == UCS_ERR_NO_RESOURCE) {
/* Out of resources - adding request for later schedule */
req = ucs_mpool_get_inline(&ep->worker->req_mp);
if (req == NULL) {
status = UCS_ERR_NO_MEMORY;
break;
}
ucp_add_pending_rma(req, ep, uct_ep, buffer, length, remote_addr,
rkey, ucp_progress_put_nbi);
status = UCS_INPROGRESS;
break;
} else {
/* Return - Error occured */
break;
}
}
}
return status;
}