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/*
* Copyright (c) 2014-2018 Los Alamos National Security, LLC. All rights
* reserved.
* Copyright (c) 2019 Triad National Security, LLC. All rights
* reserved.
* Copyright (c) 2021 Google, LLC. All rights reserved.
* Copyright (c) 2022 Amazon.com, Inc. or its affiliates.
* All Rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#ifndef OSC_RDMA_BTL_COMM_H
#define OSC_RDMA_BTL_COMM_H
#include "osc_rdma_frag.h"
#include "opal/mca/btl/btl.h"
void ompi_osc_rdma_atomic_complete(mca_btl_base_module_t *btl, struct mca_btl_base_endpoint_t *endpoint,
void *local_address, mca_btl_base_registration_handle_t *local_handle,
void *context, void *data, int status);
static inline int
ompi_osc_rdma_btl_put(ompi_osc_rdma_module_t *module, uint8_t btl_index,
struct mca_btl_base_endpoint_t *endpoint,
void *local_address, uint64_t remote_address,
struct mca_btl_base_registration_handle_t *local_handle,
struct 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)
{
if (module->use_accelerated_btl) {
mca_btl_base_module_t *btl = ompi_osc_rdma_selected_btl(module, btl_index);
return btl->btl_put(btl, endpoint, local_address, remote_address,
local_handle, remote_handle, size, flags, order,
cbfunc, cbcontext, cbdata);
} else {
mca_btl_base_am_rdma_module_t *am_rdma = ompi_osc_rdma_selected_am_rdma(module, btl_index);
return am_rdma->am_btl_put(am_rdma, endpoint, local_address, remote_address,
local_handle, remote_handle, size, flags, order,
cbfunc, cbcontext, cbdata);
}
}
static inline int
ompi_osc_rdma_btl_get(ompi_osc_rdma_module_t *module, uint8_t btl_index,
struct mca_btl_base_endpoint_t *endpoint,
void *local_address, uint64_t remote_address,
struct mca_btl_base_registration_handle_t *local_handle,
struct 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)
{
if (module->use_accelerated_btl) {
mca_btl_base_module_t *btl = ompi_osc_rdma_selected_btl(module, btl_index);
return btl->btl_get(btl, endpoint, local_address, remote_address,
local_handle, remote_handle, size, flags, order,
cbfunc, cbcontext, cbdata);
} else {
mca_btl_base_am_rdma_module_t *am_rdma = ompi_osc_rdma_selected_am_rdma(module, btl_index);
return am_rdma->am_btl_get(am_rdma, endpoint, local_address, remote_address,
local_handle, remote_handle, size, flags, order,
cbfunc, cbcontext, cbdata);
}
}
static inline int
ompi_osc_rdma_btl_atomic_op(ompi_osc_rdma_module_t *module, uint8_t btl_index,
struct mca_btl_base_endpoint_t *endpoint,
uint64_t remote_address, struct mca_btl_base_registration_handle_t *remote_handle,
mca_btl_base_atomic_op_t op, uint64_t operand, int flags, int order,
mca_btl_base_rdma_completion_fn_t cbfunc, void *cbcontext, void *cbdata)
{
mca_btl_base_module_t *btl = ompi_osc_rdma_selected_btl(module, btl_index);
/* the AM BTL interface does not currently support op calls */
assert(module->use_accelerated_btl);
return btl->btl_atomic_op(btl, endpoint, remote_address, remote_handle,
op, operand, flags, order,
cbfunc, cbcontext, cbdata);
}
static inline int
ompi_osc_rdma_btl_atomic_fop(ompi_osc_rdma_module_t *module, uint8_t btl_index,
struct mca_btl_base_endpoint_t *endpoint,
void *local_address, uint64_t remote_address,
struct mca_btl_base_registration_handle_t *local_handle,
struct mca_btl_base_registration_handle_t *remote_handle,
mca_btl_base_atomic_op_t op, uint64_t operand, int flags, int order,
mca_btl_base_rdma_completion_fn_t cbfunc, void *cbcontext, void *cbdata)
{
if (module->use_accelerated_btl) {
mca_btl_base_module_t *btl = ompi_osc_rdma_selected_btl(module, btl_index);
return btl->btl_atomic_fop(btl, endpoint, local_address, remote_address,
local_handle, remote_handle,
op, operand, flags, order,
cbfunc, cbcontext, cbdata);
} else {
mca_btl_base_am_rdma_module_t *am_rdma = ompi_osc_rdma_selected_am_rdma(module, btl_index);
return am_rdma->am_btl_atomic_fop(am_rdma, endpoint, local_address, remote_address,
local_handle, remote_handle,
op, operand, flags, order,
cbfunc, cbcontext, cbdata);
}
}
static inline int
ompi_osc_rdma_btl_atomic_cswap(ompi_osc_rdma_module_t *module, uint8_t btl_index,
struct mca_btl_base_endpoint_t *endpoint,
void *local_address, uint64_t remote_address,
struct mca_btl_base_registration_handle_t *local_handle,
struct mca_btl_base_registration_handle_t *remote_handle,
uint64_t compare, uint64_t value, int flags, int order,
mca_btl_base_rdma_completion_fn_t cbfunc, void *cbcontext, void *cbdata)
{
if (module->use_accelerated_btl) {
mca_btl_base_module_t *btl = ompi_osc_rdma_selected_btl(module, btl_index);
return btl->btl_atomic_cswap(btl, endpoint, local_address, remote_address,
local_handle, remote_handle,
compare, value, flags, order,
cbfunc, cbcontext, cbdata);
} else {
mca_btl_base_am_rdma_module_t *am_rdma = ompi_osc_rdma_selected_am_rdma(module, btl_index);
return am_rdma->am_btl_atomic_cswap(am_rdma, endpoint, local_address, remote_address,
local_handle, remote_handle,
compare, value, flags, order,
cbfunc, cbcontext, cbdata);
}
}
static inline int
ompi_osc_rdma_btl_fop(ompi_osc_rdma_module_t *module, uint8_t btl_index,
struct mca_btl_base_endpoint_t *endpoint, uint64_t address,
mca_btl_base_registration_handle_t *address_handle, int op,
int64_t operand, int flags, int64_t *result, const bool wait_for_completion,
ompi_osc_rdma_pending_op_cb_fn_t cbfunc, void *cbdata, void *cbcontext)
{
ompi_osc_rdma_pending_op_t *pending_op;
mca_btl_base_module_t *selected_btl = ompi_osc_rdma_selected_btl (module, btl_index);
int ret = OPAL_ERROR;
pending_op = OBJ_NEW(ompi_osc_rdma_pending_op_t);
assert (NULL != pending_op);
if (!wait_for_completion) {
/* NTH: need to keep track of pending ops to avoid a potential teardown problem */
pending_op->module = module;
(void) opal_atomic_fetch_add_32 (&module->pending_ops, 1);
}
pending_op->op_result = (void *) result;
pending_op->op_size = (MCA_BTL_ATOMIC_FLAG_32BIT & flags) ? 4 : 8;
OBJ_RETAIN(pending_op);
if (cbfunc) {
pending_op->cbfunc = cbfunc;
pending_op->cbdata = cbdata;
pending_op->cbcontext = cbcontext;
}
/* spin until the btl has accepted the operation */
do {
if (NULL == pending_op->op_frag) {
ret = ompi_osc_rdma_frag_alloc (module, 8, &pending_op->op_frag, (char **) &pending_op->op_buffer);
}
if (NULL != pending_op->op_frag) {
ret = ompi_osc_rdma_btl_atomic_fop(module, btl_index, endpoint, pending_op->op_buffer,
(intptr_t) address, pending_op->op_frag->handle, address_handle,
op, operand, flags, MCA_BTL_NO_ORDER, ompi_osc_rdma_atomic_complete,
(void *) pending_op, NULL);
}
if (OPAL_LIKELY(!ompi_osc_rdma_oor(ret))) {
break;
}
ompi_osc_rdma_progress (module);
} while (1);
if (OPAL_SUCCESS != ret) {
if (OPAL_LIKELY(1 == ret)) {
*result = ((int64_t *) pending_op->op_buffer)[0];
ret = OMPI_SUCCESS;
ompi_osc_rdma_atomic_complete (selected_btl, endpoint, pending_op->op_buffer,
pending_op->op_frag->handle, (void *) pending_op, NULL, OPAL_SUCCESS);
} else {
/* need to release here because ompi_osc_rdma_atomic_complete was not called */
OBJ_RELEASE(pending_op);
}
} else if (wait_for_completion) {
while (!pending_op->op_complete) {
ompi_osc_rdma_progress (module);
}
}
OBJ_RELEASE(pending_op);
return ret;
}
static inline int
ompi_osc_rdma_btl_op(ompi_osc_rdma_module_t *module, uint8_t btl_index,
struct mca_btl_base_endpoint_t *endpoint, uint64_t address,
mca_btl_base_registration_handle_t *address_handle,
int op, int64_t operand, int flags, const bool wait_for_completion,
ompi_osc_rdma_pending_op_cb_fn_t cbfunc, void *cbdata, void *cbcontext)
{
ompi_osc_rdma_pending_op_t *pending_op;
mca_btl_base_module_t *selected_btl = ompi_osc_rdma_selected_btl (module, btl_index);
int ret;
/* if using the AM RDMA interface with alternate BTLs or if the
accelerated BTL does not support atomic ops, emulate the atomic
op over a fetch and atomic op */
if (!module->use_accelerated_btl || !(selected_btl->btl_flags & MCA_BTL_FLAGS_ATOMIC_OPS)) {
return ompi_osc_rdma_btl_fop (module, btl_index, endpoint, address, address_handle, op, operand, flags,
NULL, wait_for_completion, cbfunc, cbdata, cbcontext);
}
pending_op = OBJ_NEW(ompi_osc_rdma_pending_op_t);
assert (NULL != pending_op);
OBJ_RETAIN(pending_op);
if (cbfunc) {
pending_op->cbfunc = cbfunc;
pending_op->cbdata = cbdata;
pending_op->cbcontext = cbcontext;
}
if (!wait_for_completion) {
/* NTH: need to keep track of pending ops to avoid a potential teardown problem */
pending_op->module = module;
(void) opal_atomic_fetch_add_32 (&module->pending_ops, 1);
}
/* spin until the btl has accepted the operation */
do {
ret = ompi_osc_rdma_btl_atomic_op(module, btl_index, endpoint, (intptr_t) address, address_handle,
op, operand, flags, MCA_BTL_NO_ORDER, ompi_osc_rdma_atomic_complete,
(void *) pending_op, NULL);
if (OPAL_LIKELY(!ompi_osc_rdma_oor(ret))) {
break;
}
ompi_osc_rdma_progress (module);
} while (1);
if (OPAL_SUCCESS != ret) {
/* need to release here because ompi_osc_rdma_atomic_complete was not called */
OBJ_RELEASE(pending_op);
if (OPAL_LIKELY(1 == ret)) {
if (cbfunc) {
cbfunc (cbdata, cbcontext, OMPI_SUCCESS);
}
ret = OMPI_SUCCESS;
}
} else if (wait_for_completion) {
while (!pending_op->op_complete) {
ompi_osc_rdma_progress (module);
}
}
OBJ_RELEASE(pending_op);
return ret;
}
static inline int
ompi_osc_rdma_btl_cswap(ompi_osc_rdma_module_t *module, uint8_t btl_index,
struct mca_btl_base_endpoint_t *endpoint, uint64_t address,
mca_btl_base_registration_handle_t *address_handle,
int64_t compare, int64_t value, int flags, int64_t *result)
{
ompi_osc_rdma_pending_op_t *pending_op;
int ret;
pending_op = OBJ_NEW(ompi_osc_rdma_pending_op_t);
assert (NULL != pending_op);
OBJ_RETAIN(pending_op);
pending_op->op_result = (void *) result;
pending_op->op_size = (MCA_BTL_ATOMIC_FLAG_32BIT & flags) ? 4 : 8;
/* spin until the btl has accepted the operation */
do {
if (NULL == pending_op->op_frag) {
ret = ompi_osc_rdma_frag_alloc (module, 8, &pending_op->op_frag, (char **) &pending_op->op_buffer);
}
if (NULL != pending_op->op_frag) {
ret = ompi_osc_rdma_btl_atomic_cswap(module, btl_index, endpoint, pending_op->op_buffer,
address, pending_op->op_frag->handle, address_handle, compare,
value, flags, 0, ompi_osc_rdma_atomic_complete, (void *) pending_op,
NULL);
}
if (OPAL_LIKELY(!ompi_osc_rdma_oor(ret))) {
break;
}
ompi_osc_rdma_progress (module);
} while (1);
if (OPAL_SUCCESS != ret) {
if (OPAL_LIKELY(1 == ret)) {
*result = ((int64_t *) pending_op->op_buffer)[0];
ret = OMPI_SUCCESS;
}
/* need to release here because ompi_osc_rdma_atomic_complete was not called */
OBJ_RELEASE(pending_op);
} else {
while (!pending_op->op_complete) {
ompi_osc_rdma_progress (module);
}
}
OBJ_RELEASE(pending_op);
return ret;
}
#endif /* OSC_RDMA_BTL_COMM_H */
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