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 17 #ifndef MINDSPORE_CORE_UTILS_CALLBACK_HANDLER_H_ 18 #define MINDSPORE_CORE_UTILS_CALLBACK_HANDLER_H_ 19 20 #include <utility> 21 22 #define HANDLER_DEFINE(return_type, name, ...) \ 23 public: \ 24 template <typename... Args> \ 25 static return_type name(const Args &... argss) { \ 26 if (name##_handler_ == nullptr) { \ 27 return return_type(); \ 28 } \ 29 return name##_handler_(argss...); \ 30 } \ 31 using name##Handler = std::function<decltype(name<__VA_ARGS__>)>; \ 32 static void Set##name##Handler(name##Handler handler) { name##_handler_ = std::move(handler); } \ 33 \ 34 private: \ 35 inline static name##Handler name##_handler_; 36 #endif // MINDSPORE_CORE_UTILS_CALLBACK_HANDLER_H_ 37