1 /** 2 * Copyright 2024 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_CONDITION_SWITCH_ACTOR_H_ 18 #define MINDSPORE_CCSRC_RUNTIME_FRAMEWORK_ACTOR_CONTROLFLOW_CONDITION_SWITCH_ACTOR_H_ 19 20 #include <set> 21 #include <string> 22 #include <vector> 23 #include <memory> 24 #include "runtime/graph_scheduler/actor/actor_common.h" 25 #include "runtime/graph_scheduler/actor/kernel_actor.h" 26 27 namespace mindspore { 28 namespace runtime { 29 using mindspore::device::DeviceContext; 30 using mindspore::session::KernelWithIndex; 31 32 // Condition switch actor is used to execute the branch according to the input condition in kernel graph. 33 class ConditionSwitchActor : public KernelActor { 34 public: 35 ConditionSwitchActor(const std::string &name, const CNodePtr &kernel, const DeviceContext *device_context, 36 const AID &memory_manager_aid, const AID *debug_aid, const AID *recorder_aid, 37 GraphExecutionStrategy strategy, const std::set<size_t> &modifiable_ref_input_indexes, 38 const std::set<size_t> &modifiable_ref_output_indexes, 39 const KernelTransformType &type = KernelTransformType::kConditionSwitchActor); 40 ~ConditionSwitchActor() override = default; 41 42 protected: 43 void Init() override; 44 void Run(OpContext<DeviceTensor> *const context) override; 45 void FetchInput(OpContext<DeviceTensor> *const context); 46 void SendOutput(OpContext<DeviceTensor> *const context, size_t index); 47 48 private: 49 friend class InlineControlFlowScheduler; 50 // Collect memory free list, as the ref counts of different branches are superimposed on the output, 51 // so the excess reference counts of other branches need to be subtracted in advance. 52 void CollectMemoryFreeList(size_t index); 53 54 // Graph name of each branch, 55 std::vector<std::string> branch_names_; 56 // Ref count of each branch. 57 std::vector<std::vector<size_t>> branch_origin_ref_count_; 58 // Branch of data arrow and control arrow. 59 std::vector<size_t> output_data_branch_indexes_; 60 std::vector<size_t> output_control_branch_indexes_; 61 62 // Cache output data by output index to modify the output data effectively. 63 std::vector<std::vector<OpData<DeviceTensor> *>> output_data_by_output_index_; 64 65 // Switch needs to send current branch name to the corresponding gather actor to check its inputs. 66 AID *gather_aid_{nullptr}; 67 }; 68 69 using ConditionSwitchActorPtr = std::shared_ptr<ConditionSwitchActor>; 70 } // namespace runtime 71 } // namespace mindspore 72 73 #endif // MINDSPORE_CCSRC_RUNTIME_FRAMEWORK_ACTOR_CONTROLFLOW_CONDITION_SWITCH_ACTOR_H_ 74