1 /** 2 * Copyright 2021 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_CCSRC_RUNTIME_FRAMEWORK_ACTOR_CONTROLFLOW_SWITCH_ACTOR_H_ 18 #define MINDSPORE_CCSRC_RUNTIME_FRAMEWORK_ACTOR_CONTROLFLOW_SWITCH_ACTOR_H_ 19 20 #include <vector> 21 #include <string> 22 #include <memory> 23 #include <utility> 24 #include "runtime/graph_scheduler/actor/actor_common.h" 25 #include "runtime/graph_scheduler/actor/control_flow/control_actor.h" 26 27 namespace mindspore { 28 namespace runtime { 29 using mindspore::device::DeviceContext; 30 using mindspore::session::KernelWithIndex; 31 32 // Switch actor is used to execute the branch according to the input condition. 33 // Switch and SwitchLayer node will be converted to switch actor. 34 class SwitchActor : public ControlActor { 35 public: 36 SwitchActor(const std::string &name, const AID &memory_manager_aid, const std::vector<KernelWithIndex> ¶meters, 37 const AnfNodePtr &node); 38 ~SwitchActor() override = default; 39 40 protected: 41 void FetchInput(OpContext<DeviceTensor> *const context) override; 42 43 private: 44 friend class ControlNodeScheduler; 45 // Get the output branch index of the switch actor. 46 size_t GetIndex(const OpContext<DeviceTensor> *const context) const; 47 size_t index_{0}; 48 }; 49 50 using SwitchActorPtr = std::shared_ptr<SwitchActor>; 51 } // namespace runtime 52 } // namespace mindspore 53 54 #endif // MINDSPORE_CCSRC_RUNTIME_FRAMEWORK_ACTOR_CONTROLFLOW_SWITCH_ACTOR_H_ 55