1/**
2 * Copyright 2021 Alibaba, Inc. and its affiliates. All Rights Reserved.
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 * \author Haichao.chc
17 * \date Oct 2020
18 * \brief Simple condition wait and notify class
19 */
20
21#pragma once
22
23#include <chrono>
24#include <condition_variable>
25#include <mutex>
26
27namespace proxima {
28namespace be {
29
30/*
31 * Simple wait notifier for multi-threads message sync
32 */
33class WaitNotifier {
34 public:
35 //! Constructor
36 WaitNotifier() = default;
37
38 //! Destructor
39 ~WaitNotifier() = default;
40
41 public:
42 // Wait for condition var notify
43 void wait();
44
45 // Wait for deserted time
46 void wait_until(const std::chrono::system_clock::time_point &tm_point);
47
48 // Wait for some duration time
49 void wait_for(const std::chrono::system_clock::duration &tm_duration);
50
51 // Notify once
52 void notify();
53
54 private:
55 bool notified_{false};
56 std::mutex mutex_;
57 std::condition_variable cv_;
58};
59
60} // namespace be
61} // end namespace proxima
62