add for linker this options: -lboost_system -lboost_thread -lpthread 2011/9/6 Jack Bryan <dtustudy68@hotmail.com>

thanks,

But, this time, I got strange errors : I cannot find where my code is wrong.

Any help is really appreciated.

/tmp/ccnnkCEQ.o: In function `thread_data_base': /boost_1_45_0v/include/boost/thread/pthread/thread_data.hpp:67: undefined reference to `vtable for boost::detail::thread_data_base' /tmp/ccnnkCEQ.o: In function `interruption_checker': /boost_1_45_0v/include/boost/thread/pthread/thread_data.hpp:97: undefined reference to `boost::detail::get_current_thread_data()' /tmp/ccnnkCEQ.o: In function `boost::condition_variable::wait(boost::unique_lock<boost::mutex>&)': /boost_1_45_0v/include/boost/thread/pthread/condition_variable.hpp:55: undefined reference to `boost::this_thread::interruption_point()' /tmp/ccnnkCEQ.o: In function `boost::shared_mutex::lock()': /boost_1_45_0v/include/boost/thread/pthread/shared_mutex.hpp:129: undefined reference to `boost::this_thread::disable_interruption::disable_interruption()' /boost_1_45_0v/include/boost/thread/pthread/shared_mutex.hpp:137: undefined reference to `boost::this_thread::disable_interruption::~disable_interruption()' /boost_1_45_0v/include/boost/thread/pthread/shared_mutex.hpp:137: undefined reference to `boost::this_thread::disable_interruption::~disable_interruption()' /tmp/ccnnkCEQ.o: In function `boost::shared_mutex::lock_shared()': /boost_1_45_0v/include/boost/thread/pthread/shared_mutex.hpp:59: undefined reference to `boost::this_thread::disable_interruption::disable_interruption()' /boost_1_45_0v/include/boost/thread/pthread/shared_mutex.hpp:66: undefined reference to `boost::this_thread::disable_interruption::~disable_interruption()' /boost_1_45_0v/include/boost/thread/pthread/shared_mutex.hpp:66: undefined reference to `boost::this_thread::disable_interruption::~disable_interruption()' /tmp/ccnnkCEQ.o: In function `~thread_data': /boost_1_45_0v/include/boost/thread/detail/thread.hpp:42: undefined reference to `boost::detail::thread_data_base::~thread_data_base()' /boost_1_45_0v/include/boost/thread/detail/thread.hpp:42: undefined reference to `boost::detail::thread_data_base::~thread_data_base()' /tmp/ccnnkCEQ.o: In function `thread<boost::_bi::bind_t<void, boost::_mfi::mf0<void, lab1::Server>, boost::_bi::list1<boost::_bi::value<lab1::Server*> > > >': /boost_1_45_0v/include/boost/thread/detail/thread.hpp:204: undefined reference to `boost::thread::start_thread()' /tmp/ccnnkCEQ.o: In function `~auto_ptr': /usr/lib/gcc/x86_64-redhat-linux/4.1.2/../../../../include/c++/4.1.2/memory:259: undefined reference to `boost::thread::~thread()' /tmp/ccnnkCEQ.o: In function `~thread_group': /boost_1_45_0v/include/boost/thread/detail/thread_group.hpp:34: undefined reference to `boost::thread::~thread()' /tmp/ccnnkCEQ.o: In function `boost::thread_group::join_all()': /boost_1_45_0v/include/boost/thread/detail/thread_group.hpp:74: undefined reference to `boost::thread::join()' /tmp/ccnnkCEQ.o:(.rodata._ZTIN5boost6detail11thread_dataINS_3_bi6bind_tIvNS_4_mfi3mf0IvN4lab16ServerEEENS2_5list1INS2_5valueIPS7_EEEEEEEE[typeinfo for boost::detail::thread_data<boost::_bi::bind_t<void, boost::_mfi::mf0<void, lab1::Server>, boost::_bi::list1<boost::_bi::value<lab1::Server*> > > >]+0x10): undefined reference to `typeinfo for boost::detail::thread_data_base' collect2: ld returned 1 exit status make: *** [lab2_server] Error 1

------------------------------ Date: Tue, 6 Sep 2011 02:50:50 +0400 From: i.nixman@gmail.com To: boost-users@lists.boost.org Subject: Re: [Boost-users] boost bind() error for creating thread

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

2011/9/6 Jack Bryan <dtustudy68@hotmail.com>

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

_______________________________________________ Boost-users mailing list Boost-users@lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users

_______________________________________________ Boost-users mailing list Boost-users@lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users

_______________________________________________ Boost-users mailing list Boost-users@lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users