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/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil -*- */
/*
* Copyright (C) Mellanox Technologies Ltd. 2001-2011. ALL RIGHTS RESERVED.
* Copyright (c) 2013 The University of Tennessee and The University
* of Tennessee Research Foundation. All rights
* reserved.
* Copyright (c) 2015 Los Alamos National Security, LLC. All rights
* reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#include "ompi_config.h"
#include "mtl_mxm.h"
#include "mtl_mxm_types.h"
#include "ompi/message/message.h"
#include "ompi/communicator/communicator.h"
int ompi_mtl_mxm_iprobe(struct mca_mtl_base_module_t* mtl,
struct ompi_communicator_t *comm, int src, int tag,
int *flag, struct ompi_status_public_t *status)
{
mxm_error_t err;
mxm_recv_req_t req;
req.base.state = MXM_REQ_NEW;
ompi_mtl_mxm_set_recv_envelope(&req, comm, src, tag);
err = mxm_req_probe(&req);
if (MXM_OK == err) {
*flag = 1;
if (MPI_STATUS_IGNORE != status) {
ompi_mtl_mxm_to_mpi_status(err, status);
status->MPI_SOURCE = req.completion.sender_imm;
status->MPI_TAG = req.completion.sender_tag;
status->_ucount = req.completion.sender_len;
}
return OMPI_SUCCESS;
} else if (MXM_ERR_NO_MESSAGE == err) {
*flag = 0;
return OMPI_SUCCESS;
} else {
return OMPI_ERROR;
}
}
int ompi_mtl_mxm_improbe(struct mca_mtl_base_module_t *mtl,
struct ompi_communicator_t *comm,
int src,
int tag,
int *matched,
struct ompi_message_t **message,
struct ompi_status_public_t *status)
{
mxm_error_t err;
mxm_recv_req_t req;
opal_free_list_item_t *item;
ompi_mtl_mxm_message_t *msgp;
item = opal_free_list_wait (&mca_mtl_mxm_component.mxm_messages);
if (OPAL_UNLIKELY(NULL == item)) {
return OMPI_ERR_OUT_OF_RESOURCE;
}
msgp = (ompi_mtl_mxm_message_t *) item;
req.base.state = MXM_REQ_NEW;
ompi_mtl_mxm_set_recv_envelope(&req, comm, src, tag);
msgp->mq = req.base.mq;
msgp->conn = req.base.conn;
msgp->tag = req.tag;
msgp->tag_mask = req.tag_mask;
err = mxm_req_mprobe(&req, &msgp->mxm_msg);
if (MXM_OK == err) {
if (MPI_STATUS_IGNORE != status) {
*matched = 1;
ompi_mtl_mxm_to_mpi_status(err, status);
status->MPI_SOURCE = req.completion.sender_imm;
status->MPI_TAG = req.completion.sender_tag;
status->_ucount = req.completion.sender_len;
} else{
*matched = 0;
*message = MPI_MESSAGE_NULL;
return OMPI_SUCCESS;
}
} else if (MXM_ERR_NO_MESSAGE == err) {
*matched = 0;
*message = MPI_MESSAGE_NULL;
return OMPI_SUCCESS;
} else {
return OMPI_ERROR;
}
(*message) = ompi_message_alloc();
if (OPAL_UNLIKELY(NULL == (*message))) {
*matched = 0;
*message = MPI_MESSAGE_NULL;
return OMPI_ERR_OUT_OF_RESOURCE;
}
(*message)->comm = comm;
(*message)->req_ptr = msgp;
(*message)->peer = status->MPI_SOURCE;
(*message)->count = status->_ucount;
return OMPI_SUCCESS;
}
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