我正在尝试实现一个处理许多tcp连接的服务器，每天100-1000个连接，基于一天的时间。 在阅读了很多关于每个连接的线程的c10k问题并且仅使用epoll之后，我决定使用它们作为线程池并且main将充当调度程序，因此每个新连接将被分配给线程。 
 
 我有很多问题在其他任何地方找不到答案。 以下线程安全吗？ 在添加新的fd之前我需要锁定吗？ 
 
int main ()
{
    while(i < number_threads)
      {         
        pthread_create( &id , NULL ,  worker , (void*) epoll_fd[i]);
        i++;
      }


//is it ok to add the new_sock for the epoll_fd[i] so the thread can pick it up
int y = 0;
    while(1) {
        new_sock = accept(...);
           if (epoll_ctl(epoll_fd[y], EPOLL_CTL_ADD, new_sock, &ev) < 0)
            {
                print error; 
            }
    y++;
    if (y == number_threads)
    y = 0;
    }

}



void *worker(void *epfd)
{
epoll_wait //start waiting for event
}

I'm trying to implement a server that deals with many tcp connections, from 100 - 1000 connections/day based on the time of the day. after reading a lot about the c10k problem with thread per connection and using epoll only I decided to use both as a pool of threads and the main will act as a dispatcher, so each new connection will be assigned to a thread. 
 
I have a number of questions that I can't find answers anywhere else. Is the following thread safe? Do I need to lock before adding the new fd? 
 
int main ()
{
    while(i < number_threads)
      {         
        pthread_create( &id , NULL ,  worker , (void*) epoll_fd[i]);
        i++;
      }


//is it ok to add the new_sock for the epoll_fd[i] so the thread can pick it up
int y = 0;
    while(1) {
        new_sock = accept(...);
           if (epoll_ctl(epoll_fd[y], EPOLL_CTL_ADD, new_sock, &ev) < 0)
            {
                print error; 
            }
    y++;
    if (y == number_threads)
    y = 0;
    }

}



void *worker(void *epfd)
{
epoll_wait //start waiting for event
}

原文：https://stackoverflow.com/questions/15626234