1 | /* |
2 | * Copyright 2017-present Facebook, Inc. |
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 | #pragma once |
18 | |
19 | #include <condition_variable> |
20 | #include <queue> |
21 | #include <thread> |
22 | |
23 | #include <folly/Executor.h> |
24 | |
25 | namespace folly { |
26 | |
27 | /** |
28 | * A simple multithreaded executor for use in tests etc |
29 | */ |
30 | class TestExecutor : public Executor { |
31 | public: |
32 | explicit TestExecutor(size_t numThreads); |
33 | |
34 | ~TestExecutor() override; |
35 | |
36 | void add(Func f) override; |
37 | |
38 | size_t numThreads() const; |
39 | |
40 | private: |
41 | void addImpl(Func f); |
42 | |
43 | std::mutex m_; |
44 | std::queue<Func> workItems_; |
45 | std::condition_variable cv_; |
46 | |
47 | std::vector<std::thread> workers_; |
48 | }; |
49 | |
50 | } // namespace folly |
51 | |