C++ 定时器，时间轮算法

C++ 实现定时器的两种方法（线程定时和时间轮算法修改版）_c++ 定时器-CSDN博客

#include <chrono>
#include <functional>
#include <list>
#include <mutex>
#include <thread>
#include <vector>

class TimerWheel {
public:
    using Task = std::function<void()>;

    explicit TimerWheel(size_t wheel_size, int interval_ms)
        : wheel_size_(wheel_size),
        interval_ms_(interval_ms),
        wheel_(wheel_size),
        current_index_(0) {}

    ~TimerWheel() {
        Stop();
    }

    void Start() {
        if (running_) {
            return;
        }
        running_ = true;
        thread_ = std::thread([this]() {
            while (running_) {
                std::this_thread::sleep_for(std::chrono::milliseconds(interval_ms_));
                Tick();
            }
        std::cout << "timer oooops!" << std::endl;
            });
        thread_.detach();
    }

    void Stop() {
        if (!running_) {
            return;
        }
        running_ = false;
        if (thread_.joinable()) {
            thread_.join();
        }
    }

    void AddTask(int timeout_ms, Task task) {
        std::lock_guard<std::mutex> lock(mutex_);
        size_t ticks = timeout_ms / interval_ms_;
        size_t index = (current_index_ + ticks) % wheel_size_;
        size_t allindex = index;
        for (size_t i = 1 ; allindex < wheel_size_; i++)
        {
            allindex = index * i;
            if (allindex >= wheel_size_)
                break;
            wheel_[allindex].push_back(task);
        }
        
    }

private:
    void Tick() {
        std::lock_guard<std::mutex> lock(mutex_);
        auto& tasks = wheel_[current_index_];
        for (const auto& task : tasks) {
            task();
        }
        //tasks.clear();
        current_index_ = (current_index_ + 1) % wheel_size_;
    }

private:
    size_t wheel_size_;
    int interval_ms_;
    std::vector<std::list<Task>> wheel_;
    size_t current_index_;
    bool running_ = false;
    std::thread thread_;
    std::mutex mutex_;
};