1 | /* Copyright 2019 The TensorFlow Authors. All Rights Reserved. |
2 | |
3 | Licensed under the Apache License, Version 2.0 (the "License"); |
4 | you may not use this file except in compliance with the License. |
5 | You may obtain a copy of the License at |
6 | |
7 | http://www.apache.org/licenses/LICENSE-2.0 |
8 | |
9 | Unless required by applicable law or agreed to in writing, software |
10 | distributed under the License is distributed on an "AS IS" BASIS, |
11 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
12 | See the License for the specific language governing permissions and |
13 | limitations under the License. |
14 | ==============================================================================*/ |
15 | #ifndef TENSORFLOW_CORE_FRAMEWORK_THREAD_FACTORY_H_ |
16 | #define TENSORFLOW_CORE_FRAMEWORK_THREAD_FACTORY_H_ |
17 | |
18 | #include <functional> |
19 | #include <memory> |
20 | |
21 | #include "tensorflow/core/platform/types.h" |
22 | |
23 | namespace tsl { |
24 | class Thread; |
25 | } // namespace tsl |
26 | namespace tensorflow { |
27 | using tsl::Thread; // NOLINT |
28 | |
29 | // Virtual interface for an object that creates threads. |
30 | class ThreadFactory { |
31 | public: |
32 | virtual ~ThreadFactory() {} |
33 | |
34 | // Runs `fn` asynchronously in a different thread. `fn` may block. |
35 | // |
36 | // NOTE: The caller is responsible for ensuring that this `ThreadFactory` |
37 | // outlives the returned `Thread`. |
38 | virtual std::unique_ptr<Thread> StartThread(const string& name, |
39 | std::function<void()> fn) = 0; |
40 | }; |
41 | |
42 | } // namespace tensorflow |
43 | |
44 | #endif // TENSORFLOW_CORE_FRAMEWORK_THREAD_FACTORY_H_ |
45 | |