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
25namespace folly {
26
27/**
28 * A simple multithreaded executor for use in tests etc
29 */
30class 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