Re: [Boost-users] boost::asio multiprocess

Subject: Re: [Boost-users] boost::asio multiprocess
From: Igor R (boost.lists_at_[hidden])
Date: 2011-03-01 13:46:27

> Hi guys...I would to make a simple multi process (not thread) server. I've
> seen the iterative example in which it handles one request at a time.
> Instead I need to handle more requests(more on less 10) at the same time. In
> the classic c and c++ examples, I've seen that the server is designed like
> the following:
>
> int listensd, connsd; // listening socket and conection socket
> pid_t pid;Â Â Â Â Â Â Â Â Â Â Â  //process id
> listensd=socket(....);
> bind(listensd,...);
> listen(listensd,...);
> for(;;)
> {
>
> Â  connsd=accept(listensd,...);
> Â  if((pid=fork())==0)Â  //child process
> Â  {
> Â Â Â Â Â Â Â  close(listensd);Â  //close the listen socket
> Â Â Â Â Â Â Â  do_it(connsd);Â Â Â  //serve the request
> Â Â Â Â Â Â Â  close(connsd);Â Â Â  //close the connection socket
> Â Â Â Â Â Â Â  exit(0);
> Â Â  }
> close(connsd);Â Â Â Â  //the parent closes the connection socket
> }
>
> Is it possible to do something like that with boost? I really don't know how
> obtain the two different socket, because in boost all the function (listen,
> bind, accept, etc.) return void.

ASIO objects wrap native handles, and you can access them using
native_type() member function.
But if all you need is to process simultanious requests efficiently,
you don't need to launch neither threads nor processes. All you need
is to stick with ASIO asynchronous model - just like explained in the
tutorial/examples.