xref: /ide/tools/previewer/util/CppTimer.h (revision 7c804472) 
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 CPPTIMER_H
17#define CPPTIMER_H
18
19#include <algorithm>
20#include <chrono>
21#include <functional>
22#include <list>
23#include <thread>
24
25#include "CallbackQueue.h"
26#include "PreviewerEngineLog.h"
27
28class CppTimer {
29public:
30    CppTimer() = delete;
31    CppTimer& operator=(const CppTimer&) = delete;
32    CppTimer(const CppTimer&) = delete;
33
34    ~CppTimer();
35
36    // Use callback functions and parameters to construct a timer. the timer is repeatedly executed by default.
37    template <class Function, class... Args>
38    explicit CppTimer(Function callback, Args... args) : interval(0), shotTimes(-1), isRunning(false)
39    {
40        functional = [callback, args...]() { return callback(args...); };
41        threadId = std::this_thread::get_id();
42        InitClock();
43    }
44
45    // Use callback functions, parameters, and execution times to construct a timer.
46    template <class Function, class... Args>
47    CppTimer(Function callback, Args... args, int shotTimes) : interval(0), shotTimes(-1), isRunning(false)
48    {
49        functional = [callback, args...]() { return callback(args...); };
50        this->shotTimes = shotTimes;
51        threadId = std::this_thread::get_id();
52        InitClock();
53    }
54
55    inline void SetShotTimes(int timers)
56    {
57        shotTimes = timers;
58    }
59
60    inline int GetShotTimes() const
61    {
62        return shotTimes;
63    }
64
65    inline bool IsRunning() const
66    {
67        return isRunning;
68    }
69
70    void Start(int64_t value);
71
72    void Stop();
73
74    void RunTimerTick(CallbackQueue& queue);
75
76private:
77    int64_t interval;
78    int32_t shotTimes;
79    std::thread::id threadId;
80    bool isRunning;
81    std::function<void()> functional;
82    std::chrono::system_clock::time_point startTime;
83
84    void InitClock()
85    {
86        startTime = std::chrono::system_clock::now();
87    }
88};
89
90#endif // CPPTIMER_H
91