1 /*
2  * Copyright (c) 2023 Huawei Device Co., Ltd.
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 
16 #ifndef FFRT_TS_QUEUE_HPP
17 #define FFRT_TS_QUEUE_HPP
18 #include <queue>
19 #include <mutex>
20 #include <condition_variable>
21 
22 namespace ffrt {
23 // 线程安全队列，支持线程阻塞
24 template <typename T>
25 class TSQueue {
26 public:
27     TSQueue() = default;
28     ~TSQueue() = default;
29 
Push(const T & data)30     void Push(const T& data)
31     {
32         {
33             std::lock_guard<decltype(mutex_)> lg(mutex_);
34             queue_.push(data);
35         }
36         cond_.notify_one();
37     }
38 
Pop()39     T Pop()
40     {
41         std::unique_lock<decltype(mutex_)> lg(mutex_);
42         cond_.wait(lg, [this] { return !queue_.empty(); });
43         auto& res = queue_.front();
44         queue_.pop();
45         return res;
46     }
47 
48 private:
49     std::queue<T> queue_;
50     std::mutex mutex_;
51     std::condition_variable cond_;
52 };
53 } // namespace ffrt
54 #endif
55