1 /** 2 * Copyright 2019 Huawei Technologies Co., Ltd 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 #ifndef MINDSPORE_CCSRC_BACKEND_SESSION_SESSION_FACTORY_H_ 17 #define MINDSPORE_CCSRC_BACKEND_SESSION_SESSION_FACTORY_H_ 18 19 #include <functional> 20 #include <map> 21 #include <memory> 22 #include <string> 23 #include <utility> 24 #include "utils/ms_utils.h" 25 #include "backend/session/session_basic.h" 26 namespace mindspore { 27 namespace session { 28 using SessionCreator = std::function<std::shared_ptr<SessionBasic>()>; 29 class SessionFactory { 30 public: 31 static SessionFactory &Get(); 32 void Register(const std::string &device_name, SessionCreator &&session_creator); 33 std::shared_ptr<SessionBasic> Create(const std::string &device_name); 34 35 private: 36 SessionFactory() = default; 37 ~SessionFactory() = default; 38 DISABLE_COPY_AND_ASSIGN(SessionFactory) 39 std::map<std::string, SessionCreator> session_creators_; 40 }; 41 42 class SessionRegistrar { 43 public: SessionRegistrar(const std::string & device_name,SessionCreator && session_creator)44 SessionRegistrar(const std::string &device_name, SessionCreator &&session_creator) { 45 SessionFactory::Get().Register(device_name, std::move(session_creator)); 46 } 47 ~SessionRegistrar() = default; 48 }; 49 50 #define MS_REG_SESSION(DEVICE_NAME, SESSION_CLASS) \ 51 static const SessionRegistrar g_session_registrar__##DEVICE_NAME##_##_reg( \ 52 DEVICE_NAME, []() { return std::make_shared<SESSION_CLASS>(); }); 53 } // namespace session 54 } // namespace mindspore 55 56 #endif // MINDSPORE_CCSRC_BACKEND_SESSION_SESSION_FACTORY_H_ 57