muduo/EventLoopThreadPool.cc at main · dwsz-s/muduo · GitHub

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#include"EventLoopThreadPool.h"
#include"EventLoopThread.h"
#include<memory>
EventLoopThreadPool::EventLoopThreadPool(EventLoop *baseLoop, const std::string &nameArg)
:baseLoop_(baseLoop)
,name_(nameArg)
,started_(false)
,numThreads_(0)
,next_(0)
{

}

EventLoopThreadPool::~EventLoopThreadPool(){

}

void EventLoopThreadPool::start(const ThreadInitCallback &cb){
    started_ =true;
    for(int i = 0;i<numThreads_;++i){
        char buf[name_.size()+32];
        snprintf(buf,sizeof buf,"%s%d",name_.c_str(),i);
        EventLoopThread *t=new EventLoopThread(cb,buf);
        threads_.push_back(std::unique_ptr<EventLoopThread>(t));
        loops_.push_back(t->startLoop());
    }
    //表明整个服务器只有一个线程，运行baseloop
    if(numThreads_ == 0 && cb){
        cb(baseLoop_);
    }
}

EventLoop* EventLoopThreadPool::getNextLoop(){
    EventLoop *loop = baseLoop_;
    if(!loops_.empty()){
        loop =loops_[next_];
        ++next_;
        if(next_>=loops_.size()) next_=0;
    }
    return loop;
}

std::vector<EventLoop*> EventLoopThreadPool::getAllLoops(){
    if(loops_.empty()){
        return {baseLoop_};
    }
    else{
        return loops_;
    }
}