1 /** 2 * Copyright 2022 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_LITE_SRC_EXTENDRT_DELEGATE_AUTO_REGISTRATION_FACTORY_H_ 17 #define MINDSPORE_LITE_SRC_EXTENDRT_DELEGATE_AUTO_REGISTRATION_FACTORY_H_ 18 19 #include <unordered_map> 20 21 namespace mindspore::lite { 22 template <typename KeyType, typename CreatorType> 23 class AutoRegistrationFactory { 24 public: 25 struct AutoRegister { AutoRegisterAutoRegister26 AutoRegister(KeyType k, CreatorType creator) { 27 AutoRegistrationFactory<KeyType, CreatorType>::Get().Insert(k, creator); 28 } 29 }; 30 static AutoRegistrationFactory<KeyType, CreatorType> &Get(); HasKey(KeyType k)31 bool HasKey(KeyType k) const { return key2creator_.find(k) != key2creator_.end(); } GetCreator(KeyType k)32 CreatorType GetCreator(KeyType k) { return key2creator_[k]; } 33 34 private: Insert(KeyType k,CreatorType creator)35 bool Insert(KeyType k, CreatorType creator) { 36 if (HasKey(k)) { 37 return false; 38 } 39 return key2creator_.emplace(k, creator).second; 40 } 41 std::unordered_map<KeyType, CreatorType> key2creator_; 42 }; 43 44 #define AUTO_REGISTRATION_FACTORY_JOIN(a, b) a##b 45 46 #define AUTO_REGISTRATION_FACTORY_UNIQUE_NAME_JOIN(a, b) AUTO_REGISTRATION_FACTORY_JOIN(a, b) 47 48 #define AUTO_REGISTRATION_FACTORY_UNIQUE_NAME AUTO_REGISTRATION_FACTORY_UNIQUE_NAME_JOIN(g_, __COUNTER__) 49 50 #define REGISTER_CLASS_CREATOR(KeyType, k, CreatorType, creator) \ 51 static AutoRegistrationFactory<KeyType, CreatorType>::AutoRegister AUTO_REGISTRATION_FACTORY_UNIQUE_NAME(k, creator); 52 } // namespace mindspore::lite 53 54 #endif // MINDSPORE_LITE_SRC_EXTENDRT_DELEGATE_AUTO_REGISTRATION_FACTORY_H_ 55