| /* Copyright 2018 The TensorFlow Authors. All Rights Reserved. |
| |
| Licensed under the Apache License, Version 2.0 (the "License"); |
| you may not use this file except in compliance with the License. |
| You may obtain a copy of the License at |
| |
| http://www.apache.org/licenses/LICENSE-2.0 |
| |
| Unless required by applicable law or agreed to in writing, software |
| distributed under the License is distributed on an "AS IS" BASIS, |
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| See the License for the specific language governing permissions and |
| limitations under the License. |
| ==============================================================================*/ |
| #ifndef TENSORFLOW_CORE_COMMON_RUNTIME_SESSION_REF_H_ |
| #define TENSORFLOW_CORE_COMMON_RUNTIME_SESSION_REF_H_ |
| |
| #include <memory> |
| |
| #include "tensorflow/core/platform/mutex.h" |
| #include "tensorflow/core/public/session.h" |
| |
| namespace tensorflow { |
| |
| // A `SessionRef` manages the lifetime of a wrapped `Session` pointer. |
| // |
| // SessionRef blocks the return of Close() until all pending operations have |
| // been completed or cancelled and underlying session has been freed. Any |
| // subsequent operations on the SessionRef object will return errors::Cancelled. |
| class SessionRef : public Session { |
| public: |
| SessionRef(Session* session) : session_(session) {} |
| virtual ~SessionRef() {} |
| |
| Status Create(const GraphDef& graph) override; |
| Status Extend(const GraphDef& graph) override; |
| Status Create(const RunOptions& run_options, const GraphDef& graph) override; |
| Status Extend(const RunOptions& run_options, const GraphDef& graph) override; |
| Status Run(const std::vector<std::pair<string, Tensor> >& inputs, |
| const std::vector<string>& output_tensor_names, |
| const std::vector<string>& target_node_names, |
| std::vector<Tensor>* outputs) override; |
| |
| Status ListDevices(std::vector<DeviceAttributes>* response) override; |
| |
| Status Close() override; |
| Status Close(const RunOptions& run_options) override; |
| |
| Status Run(const RunOptions& run_options, |
| const std::vector<std::pair<string, Tensor> >& inputs, |
| const std::vector<string>& output_tensor_names, |
| const std::vector<string>& target_node_names, |
| std::vector<Tensor>* outputs, RunMetadata* run_metadata) override; |
| |
| Status PRunSetup(const std::vector<string>& input_names, |
| const std::vector<string>& output_names, |
| const std::vector<string>& target_nodes, |
| string* handle) override; |
| |
| Status PRun(const string& handle, |
| const std::vector<std::pair<string, Tensor> >& inputs, |
| const std::vector<string>& output_names, |
| std::vector<Tensor>* outputs) override; |
| |
| Status MakeCallable(const CallableOptions& callable_options, |
| CallableHandle* out_handle) override; |
| |
| Status RunCallable(CallableHandle handle, |
| const std::vector<Tensor>& feed_tensors, |
| std::vector<Tensor>* fetch_tensors, |
| RunMetadata* run_metadata) override; |
| |
| Status ReleaseCallable(CallableHandle handle) override; |
| |
| private: |
| mutex run_lock_; |
| condition_variable run_finished_; |
| uint64 run_count_ GUARDED_BY(run_lock_) = {0}; |
| std::shared_ptr<Session> session_; |
| |
| Status CheckNotClosed(); |
| }; |
| |
| } // namespace tensorflow |
| |
| #endif // TENSORFLOW_CORE_COMMON_RUNTIME_SESSION_REF_H_ |