84 строки
2.3 KiB
C
84 строки
2.3 KiB
C
/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil -*- */
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/*
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* Copyright (c) 2015 Los Alamos National Security, LLC. All rights
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* 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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#include "osc_rdma.h"
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#include "osc_rdma_sync.h"
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static void ompi_osc_rdma_sync_constructor (ompi_osc_rdma_sync_t *rdma_sync)
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{
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rdma_sync->type = OMPI_OSC_RDMA_SYNC_TYPE_NONE;
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rdma_sync->epoch_active = false;
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rdma_sync->outstanding_rdma = 0;
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OBJ_CONSTRUCT(&rdma_sync->aggregations, opal_list_t);
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OBJ_CONSTRUCT(&rdma_sync->lock, opal_mutex_t);
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}
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static void ompi_osc_rdma_sync_destructor (ompi_osc_rdma_sync_t *rdma_sync)
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{
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OBJ_DESTRUCT(&rdma_sync->aggregations);
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OBJ_DESTRUCT(&rdma_sync->lock);
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}
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OBJ_CLASS_INSTANCE(ompi_osc_rdma_sync_t, opal_object_t, ompi_osc_rdma_sync_constructor,
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ompi_osc_rdma_sync_destructor);
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ompi_osc_rdma_sync_t *ompi_osc_rdma_sync_allocate (struct ompi_osc_rdma_module_t *module)
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{
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ompi_osc_rdma_sync_t *rdma_sync;
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rdma_sync = OBJ_NEW (ompi_osc_rdma_sync_t);
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if (OPAL_UNLIKELY(NULL == rdma_sync)) {
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return NULL;
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}
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rdma_sync->module = module;
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return rdma_sync;
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}
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void ompi_osc_rdma_sync_return (ompi_osc_rdma_sync_t *rdma_sync)
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{
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OBJ_RELEASE(rdma_sync);
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}
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static inline bool ompi_osc_rdma_sync_array_peer (int rank, ompi_osc_rdma_peer_t **peers, size_t nranks,
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struct ompi_osc_rdma_peer_t **peer)
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{
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int mid = nranks / 2;
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/* base cases */
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if (0 == nranks || (1 == nranks && peers[0]->rank != rank)) {
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*peer = NULL;
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return false;
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} else if (peers[0]->rank == rank) {
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*peer = peers[0];
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return true;
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}
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if (peers[mid]->rank > rank) {
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return ompi_osc_rdma_sync_array_peer (rank, peers, mid, peer);
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}
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return ompi_osc_rdma_sync_array_peer (rank, peers + mid, nranks - mid, peer);
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}
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bool ompi_osc_rdma_sync_pscw_peer (ompi_osc_rdma_module_t *module, int target, struct ompi_osc_rdma_peer_t **peer)
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{
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ompi_osc_rdma_sync_t *rdma_sync = &module->all_sync;
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/* check synchronization type */
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if (OMPI_OSC_RDMA_SYNC_TYPE_PSCW != rdma_sync->type) {
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*peer = NULL;
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return false;
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}
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return ompi_osc_rdma_sync_array_peer (target, rdma_sync->peer_list.peers, rdma_sync->num_peers, peer);
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}
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