103 строки
3.3 KiB
C
103 строки
3.3 KiB
C
/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil -*- */
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/*
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* Copyright (c) 2011-2012 Los Alamos National Security, LLC. All rights
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* reserved.
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* Copyright (c) 2011 UT-Battelle, LLC. 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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#if !defined(MCA_BTL_UGNI_SMSG_H)
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#define MCA_BTL_UGNI_SMSG_H
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#include "btl_ugni.h"
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#include "btl_ugni_endpoint.h"
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#include "btl_ugni_frag.h"
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#include "btl_ugni_rdma.h"
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typedef enum {
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MCA_BTL_UGNI_TAG_SEND,
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MCA_BTL_UGNI_TAG_DISCONNECT,
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MCA_BTL_UGNI_TAG_GET_INIT,
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MCA_BTL_UGNI_TAG_RDMA_COMPLETE
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} mca_btl_ugni_smsg_tag_t;
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int mca_btl_ugni_smsg_process (mca_btl_base_endpoint_t *ep);
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int mca_btl_ugni_progress_remote_smsg (mca_btl_ugni_module_t *btl);
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static inline int mca_btl_ugni_progress_local_smsg (mca_btl_ugni_module_t *ugni_module)
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{
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mca_btl_ugni_base_frag_t *frag;
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gni_cq_entry_t event_data;
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gni_return_t rc;
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uint32_t msg_id;
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rc = GNI_CqGetEvent (ugni_module->smsg_local_cq, &event_data);
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if (GNI_RC_NOT_DONE == rc) {
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return OMPI_SUCCESS;
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}
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if (OPAL_UNLIKELY((GNI_RC_SUCCESS != rc && !event_data) || GNI_CQ_OVERRUN(event_data))) {
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/* TODO -- need to handle overrun -- how do we do this without an event?
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will the event eventually come back? Ask Cray */
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BTL_ERROR(("post error! cq overrun = %d", (int)GNI_CQ_OVERRUN(event_data)));
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assert (0);
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return ompi_common_rc_ugni_to_ompi (rc);
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}
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assert (GNI_CQ_GET_TYPE(event_data) == GNI_CQ_EVENT_TYPE_SMSG);
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msg_id = GNI_CQ_GET_MSG_ID(event_data);
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if ((uint32_t) -1 == msg_id) {
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/* nothing to do */
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return OMPI_SUCCESS;
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}
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frag = (mca_btl_ugni_base_frag_t *) opal_pointer_array_get_item (&ugni_module->pending_smsg_frags_bb,
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msg_id);
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assert (NULL != frag);
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if (OPAL_UNLIKELY(NULL == frag)) {
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return OMPI_ERROR;
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}
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mca_btl_ugni_frag_complete (frag, rc);
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return 1;
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}
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static inline int ompi_mca_btl_ugni_smsg_send (mca_btl_ugni_base_frag_t *frag,
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const bool ignore_local_comp,
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void *hdr, size_t hdr_len,
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void *payload, size_t payload_len,
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mca_btl_ugni_smsg_tag_t tag) {
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gni_return_t grc;
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grc = GNI_SmsgSendWTag (frag->endpoint->smsg_ep_handle, hdr, hdr_len, payload, payload_len,
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ignore_local_comp ? (uint32_t) -1 : frag->msg_id, tag);
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(void) mca_btl_ugni_progress_local_smsg ((mca_btl_ugni_module_t *) frag->endpoint->btl);
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if (OPAL_LIKELY(GNI_RC_SUCCESS == grc)) {
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return OMPI_SUCCESS;
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}
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/* see if we can free up some credits */
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(void) mca_btl_ugni_progress_remote_smsg ((mca_btl_ugni_module_t *) frag->endpoint->btl);
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if (OPAL_LIKELY(GNI_RC_NOT_DONE == grc)) {
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BTL_VERBOSE(("out of credits"));
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return OMPI_ERR_OUT_OF_RESOURCE;
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}
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BTL_ERROR(("GNI_SmsgSendWTag failed with rc = %d. handle = %lu, hdr_len = %d, payload_len = %d",
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grc, (uintptr_t) frag->endpoint->smsg_ep_handle, (int) hdr_len, (int) payload_len));
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return OMPI_ERROR;
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}
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#endif /* MCA_BTL_UGNI_SMSG_H */
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