1 // Copyright 2016 Google Inc. 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 THREAD_POOL_H_
16 #define THREAD_POOL_H_
17 
18 #include <functional>
19 
20 using namespace std;
21 
22 class ThreadPool {
23  public:
24   virtual ~ThreadPool() = default;
25 
26   virtual void Submit(function<void(void)> task) = 0;
27   virtual void Wait() = 0;
28 
29  protected:
30   ThreadPool() = default;
31 };
32 
33 ThreadPool* NewThreadPool(int num_threads);
34 
35 #endif  // THREAD_POOL_H_
36