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openmpi/ompi/mca/btl/vader/btl_vader_send.c

59 строки
2.0 KiB
C
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/* -*- Mode: C; c-basic-offset:4 ; -*- */
/*
* Copyright (c) 2004-2011 The Trustees of Indiana University and Indiana
* University Research and Technology
* Corporation. All rights reserved.
* Copyright (c) 2004-2009 The University of Tennessee and The University
* of Tennessee Research Foundation. All rights
* reserved.
* Copyright (c) 2004-2007 High Performance Computing Center Stuttgart,
* University of Stuttgart. All rights reserved.
* Copyright (c) 2004-2005 The Regents of the University of California.
* All rights reserved.
* Copyright (c) 2006-2007 Voltaire. All rights reserved.
* Copyright (c) 2009 Cisco Systems, Inc. All rights reserved.
* Copyright (c) 2010-2011 Los Alamos National Security, LLC.
* All rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#include "ompi_config.h"
#include "btl_vader.h"
#include "btl_vader_frag.h"
#include "btl_vader_fifo.h"
/**
* Initiate a send to the peer.
*
* @param btl (IN) BTL module
* @param peer (IN) BTL peer addressing
*/
int mca_btl_vader_send (struct mca_btl_base_module_t *btl,
struct mca_btl_base_endpoint_t *endpoint,
struct mca_btl_base_descriptor_t *descriptor,
mca_btl_base_tag_t tag)
{
mca_btl_vader_frag_t *frag = (mca_btl_vader_frag_t *) descriptor;
/* available header space */
frag->hdr->len = frag->segment.seg_len;
/* type of message, pt-2-pt, one-sided, etc */
frag->hdr->tag = tag;
frag->endpoint = endpoint;
opal_list_append (&mca_btl_vader_component.active_sends, (opal_list_item_t *) frag);
/* post the relative address of the descriptor into the peer's fifo */
vader_fifo_write ((void *) VIRTUAL2RELATIVE(frag->hdr),
mca_btl_vader_component.fifo[endpoint->peer_smp_rank]);
/* data is gone */
return 1;
}