Re: [Boost-users] boost bind() error for creating thread

Subject: Re: [Boost-users] boost bind() error for creating thread
From: niXman (i.nixman_at_[hidden])
Date: 2011-09-05 18:50:50

threadGroup.create_thread(boost::bind(&lab1::Server::Run, &server));

2011/9/6 Jack Bryan <dtustudy68_at_[hidden]>

>  Hi,
>
> I using boost::bind() to create thread. But, I got errors at:
>
> threadGroup.create_thread(boost::bind(&lab1::Server::Run, server));
>
> Any help is really appreciated.
>
> Code is as follows:
> ---------------------------------------------
>
> class Server {
> public:
>   // The constructor takes a port number and prepares to receive HTTP
>   // requests from clients on that port.
>   explicit Server(int port);
>
>   // Closes the connection.
>   ~Server();
>
>   //
>   void Run();
>   //Server(Server&);
> private:
>   // 'listening' socket used to establish HTTP connections
>   int listen_fd_;
>
>   // Non-copyable, non-assignable
>   Server(Server&);
>   Server& operator=(Server&);
> };
>
>
> int main(int argc, char *argv[]) {
>   if (argc != 2) {
>     std::cout << "Usage: lab1 <port>" << std::endl;
>     return 1;
>   }
>
> // Convert the port from a string to an integer.
>   int port_number;
>   std::istringstream port_stream(argv[1]); // argv[1] is port number,
>   port_stream >> port_number;
>
>   // Convert the thread number from a string to an integer.
>   int thread_number;
>   std::istringstream thread_stream(argv[2]); // argv[1] is port number,
>   thread_stream >> thread_number;
>   lab1::Server server(port_number);
>
> boost::thread_group threadGroup;
>
> for(int i=0;i<thread_number;i++)
>   {
>
>      threadGroup.create_thread(boost::bind(&lab1::Server::Run, server));
>   }
> threadGroup.join_all();
>
>
>   return 0;
> }
>
> error: no matching function for call to âboost::_bi::bind_t<void,
> boost::_mfi::mf0<void, lab1::Server>,
> boost::_bi::list1<boost::_bi::value<lab1::Server> >
> >::bind_t(boost::_bi::bind_t<void, boost::_mfi::mf0<void, lab1::Server>,
> boost::_bi::list1<boost::_bi::value<lab1::Server> > >)â
>
>
> /bind.hpp:865: note: candidates are: boost::_bi::bind_t<void,
> boost::_mfi::mf0<void, lab1::Server>,
> boost::_bi::list1<boost::_bi::value<lab1::Server> >
> >::bind_t(boost::_bi::bind_t<void, boost::_mfi::mf0<void, lab1::Server>,
> boost::_bi::list1<boost::_bi::value<lab1::Server> > >&)
>
> lab2.cpp:241: error:   initializing argument 1 of âboost::thread*
> boost::thread_group::create_thread(F) [with F = boost::_bi::bind_t<void,
> boost::_mfi::mf0<void, lab1::Server>,
> boost::_bi::list1<boost::_bi::value<lab1::Server> > >]â
>
>
> bind_mf_cc.hpp: In function âboost::_bi::bind_t<R, boost::_mfi::mf0<R, T>,
> typename boost::_bi::list_av_1<A1>::type> boost::bind(R (T::*)(), A1) [with
> R = void, T = lab1::Server, A1 = lab1::Server]â
>
> error:   initializing argument 1 of âboost::thread*
> boost::thread_group::create_thread(F) [with F = boost::_bi::bind_t<void,
> boost::_mfi::mf0<void, lab1::Server>,
> boost::_bi::list1<boost::_bi::value<lab1::Server> > >]â
>
> instantiated from here
> bind_mf_cc.hpp:24: error: no matching function for call to
> âboost::_bi::list1<boost::_bi::value<lab1::Server>
> >::list1(boost::_bi::list1<boost::_bi::value<lab1::Server> >)â
>
>
>
>
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