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/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil -*- */
/*
* Copyright (c) 2004-2007 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) 2004-2005 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) 2009-2010 Cisco Systems, Inc. All rights reserved.
* Copyright (c) 2010-2018 Los Alamos National Security, LLC. All rights
* reserved.
* Copyright (c) 2015 Mellanox Technologies. All rights reserved.
* Copyright (c) 2018 Triad National Security, LLC. All rights
* reserved.
* Copyright (c) 2020 Google, LLC. All rights reserved.
*
* Copyright (c) 2019-2020 Intel, Inc. All rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
/**
* @file
*/
#ifndef MCA_BTL_SM_H
#define MCA_BTL_SM_H
#include "opal_config.h"
#include <stddef.h>
#include <stdlib.h>
#include <string.h>
#include <stdint.h>
#ifdef HAVE_SCHED_H
# include <sched.h>
#endif /* HAVE_SCHED_H */
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif /* HAVE_UNISTD_H */
#include "opal/mca/shmem/base/base.h"
#include "opal/mca/btl/base/base.h"
#include "opal/mca/btl/base/btl_base_error.h"
#include "opal/mca/btl/btl.h"
#include "opal/mca/btl/sm/btl_sm_types.h"
#include "opal/mca/mpool/base/base.h"
#include "opal/mca/rcache/base/base.h"
#include "opal/mca/rcache/base/rcache_base_vma.h"
#include "opal/mca/rcache/rcache.h"
#include "opal/sys/atomic.h"
#include "opal/util/proc.h"
#include "opal/mca/pmix/pmix-internal.h"
BEGIN_C_DECLS
#define min(a, b) ((a) < (b) ? (a) : (b))
/*
* Shared Memory resource management
*/
struct sm_fifo_t;
OPAL_DECLSPEC extern mca_btl_sm_component_t mca_btl_sm_component;
OPAL_DECLSPEC extern mca_btl_sm_t mca_btl_sm;
/* number of peers on the node (not including self) */
#define MCA_BTL_SM_NUM_LOCAL_PEERS opal_process_info.num_local_peers
/* local rank in the group */
#define MCA_BTL_SM_LOCAL_RANK opal_process_info.my_local_rank
/* memcpy is faster at larger sizes but is undefined if the
pointers are aliased (TODO -- readd alias check) */
static inline void sm_memmove(void *dst, void *src, size_t size)
{
if (size >= (size_t) mca_btl_sm_component.memcpy_limit) {
memcpy(dst, src, size);
} else {
memmove(dst, src, size);
}
}
/**
* Initiate a send to the peer.
*
* @param btl (IN) BTL module
* @param peer (IN) BTL peer addressing
*/
int mca_btl_sm_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);
/**
* Initiate an inline send to the peer.
*
* @param btl (IN) BTL module
* @param peer (IN) BTL peer addressing
*/
int mca_btl_sm_sendi(struct mca_btl_base_module_t *btl, struct mca_btl_base_endpoint_t *endpoint,
struct opal_convertor_t *convertor, void *header, size_t header_size,
size_t payload_size, uint8_t order, uint32_t flags, mca_btl_base_tag_t tag,
mca_btl_base_descriptor_t **descriptor);
/**
* Initiate an synchronous put.
*
* @param btl (IN) BTL module
* @param endpoint (IN) BTL addressing information
* @param descriptor (IN) Description of the data to be transferred
*/
int mca_btl_sm_put(mca_btl_base_module_t *btl, mca_btl_base_endpoint_t *endpoint,
void *local_address, uint64_t remote_address,
mca_btl_base_registration_handle_t *local_handle,
mca_btl_base_registration_handle_t *remote_handle, size_t size, int flags,
int order, mca_btl_base_rdma_completion_fn_t cbfunc, void *cbcontext,
void *cbdata);
/**
* Initiate an synchronous get.
*
* @param btl (IN) BTL module
* @param endpoint (IN) BTL addressing information
* @param descriptor (IN) Description of the data to be transferred
*/
int mca_btl_sm_get(mca_btl_base_module_t *btl, mca_btl_base_endpoint_t *endpoint,
void *local_address, uint64_t remote_address,
mca_btl_base_registration_handle_t *local_handle,
mca_btl_base_registration_handle_t *remote_handle, size_t size, int flags,
int order, mca_btl_base_rdma_completion_fn_t cbfunc, void *cbcontext,
void *cbdata);
/**
* Allocate a segment.
*
* @param btl (IN) BTL module
* @param size (IN) Request segment size.
*/
mca_btl_base_descriptor_t *mca_btl_sm_alloc(struct mca_btl_base_module_t *btl,
struct mca_btl_base_endpoint_t *endpoint, uint8_t order,
size_t size, uint32_t flags);
/**
* Return a segment allocated by this BTL.
*
* @param btl (IN) BTL module
* @param segment (IN) Allocated segment.
*/
int mca_btl_sm_free(struct mca_btl_base_module_t *btl, mca_btl_base_descriptor_t *des);
static inline bool mca_btl_is_self_endpoint(mca_btl_base_endpoint_t *endpoint) {
return endpoint->peer_smp_rank == MCA_BTL_SM_LOCAL_RANK;
}
END_C_DECLS
#endif
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