#pragma once

#include "noncopyable.h"

#include <functional>
#include <string>
#include <vector>
#include <memory>

class EventLoop;
class EventLoopThread;

class EventLoopThreadPool:noncopyable{
  public:
    using ThreadInitCallback = std::function<void(EventLoop*)>;
    
    EventLoopThreadPool(EventLoop* baseLoop, const std::string& nameArg);
    ~EventLoopThreadPool();

    void setThreadNum(int numThreads){ numThreads_ = numThreads; }
    void start(const ThreadInitCallback& cb = ThreadInitCallback());
    
    //如果工作在多线程中，baseLoop_中默认以轮询的方式分配Channel给subLoop
    EventLoop* getNextLoop();

    std::vector<EventLoop*> getAllLoops();

    bool started() const { return started_; }
    const std::string name() const { return name_; }
  private:
    
    EventLoop* baseLoop_;
    std::string name_;
    bool started_;
    int numThreads_;
    int next_;
    std::vector<std::unique_ptr<EventLoopThread>> threads_;
    std::vector<EventLoop*> loops_;
};