94 строки
2.5 KiB
C
94 строки
2.5 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_pt2pt.h"
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#include "osc_pt2pt_sync.h"
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static void ompi_osc_pt2pt_sync_constructor (ompi_osc_pt2pt_sync_t *sync)
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{
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sync->type = OMPI_OSC_PT2PT_SYNC_TYPE_NONE;
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sync->eager_send_active = false;
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sync->epoch_active = false;
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OBJ_CONSTRUCT(&sync->lock, opal_mutex_t);
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OBJ_CONSTRUCT(&sync->cond, opal_condition_t);
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}
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static void ompi_osc_pt2pt_sync_destructor (ompi_osc_pt2pt_sync_t *sync)
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{
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OBJ_DESTRUCT(&sync->lock);
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OBJ_DESTRUCT(&sync->cond);
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}
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OBJ_CLASS_INSTANCE(ompi_osc_pt2pt_sync_t, opal_free_list_item_t,
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ompi_osc_pt2pt_sync_constructor,
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ompi_osc_pt2pt_sync_destructor);
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ompi_osc_pt2pt_sync_t *ompi_osc_pt2pt_sync_allocate (struct ompi_osc_pt2pt_module_t *module)
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{
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ompi_osc_pt2pt_sync_t *sync;
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/* module is not used yet */
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(void) module;
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sync = OBJ_NEW (ompi_osc_pt2pt_sync_t);
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if (OPAL_UNLIKELY(NULL == sync)) {
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return NULL;
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}
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sync->module = module;
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return sync;
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}
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void ompi_osc_pt2pt_sync_return (ompi_osc_pt2pt_sync_t *sync)
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{
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OBJ_RELEASE(sync);
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}
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static inline bool ompi_osc_pt2pt_sync_array_peer (int rank, ompi_osc_pt2pt_peer_t **peers, size_t nranks,
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struct ompi_osc_pt2pt_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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if (peer) {
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*peer = NULL;
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}
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return false;
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} else if (peers[0]->rank == rank) {
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if (peer) {
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*peer = peers[0];
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}
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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_pt2pt_sync_array_peer (rank, peers, mid, peer);
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}
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return ompi_osc_pt2pt_sync_array_peer (rank, peers + mid, nranks - mid, peer);
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}
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bool ompi_osc_pt2pt_sync_pscw_peer (ompi_osc_pt2pt_module_t *module, int target, struct ompi_osc_pt2pt_peer_t **peer)
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{
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ompi_osc_pt2pt_sync_t *pt2pt_sync = &module->all_sync;
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/* check synchronization type */
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if (OMPI_OSC_PT2PT_SYNC_TYPE_PSCW != pt2pt_sync->type) {
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if (peer) {
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*peer = NULL;
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}
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return false;
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}
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return ompi_osc_pt2pt_sync_array_peer (target, pt2pt_sync->peer_list.peers, pt2pt_sync->num_peers, peer);
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}
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