gen_comm_id_helper.h

/* Copyright (c) 2020 PaddlePaddle Authors. All Rights Reserved.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License. */

#pragma once

#ifdef PADDLE_WITH_NCCL
#include <functional>
#include <string>
#include <vector>

namespace paddle {
namespace platform {

int CreateListenSocket(const std::string& ep);

void CloseSocket(int fd);

template <typename CommUniqueId>
void SendBroadCastCommID(std::vector<std::string> servers,
                         std::vector<CommUniqueId>* nccl_ids);

template <typename CommUniqueId>
void RecvBroadCastCommID(std::string endpoint,
                         std::vector<CommUniqueId>* nccl_ids);

// recv nccl id from socket
template <typename CommUniqueId>
void RecvBroadCastCommID(int server_fd, std::string endpoint,
                         std::vector<CommUniqueId>* nccl_ids);
}  // namespace platform
}  // namespace paddle

#endif