How to bind a class member function (without input arguments) with an object of the class so that the binded function can be used to create a thread by pthreads?
#include <tr1/functional>
using std::tr1::bind;
using namespace std::tr1::placeholders;
Server server(port_number);
Server* serverPtr;
serverPtr = &server;
pthread_t my_thread = makeThread(bind(&lab1::Server::Run), serverPtr);
pthread_t makeThread(ThreadBody body) {
ThreadBody* copy = new ThreadBody(body);
void* arg = reinterpret_cast<void*>(copy);
pthread_t thread;
if (pthread_create(&thread, NULL, threadFunction, arg) != 0) {
perror("Can't create thread");
delete copy;
exit(1);
}
return thread;
}
I got compile error:
I have no idea what this error means.
/usr/lib/gcc/x86_64-redhat-linux/4.1.2/../../../../include/c++/4.1.2/tr1/functional_iterate.h: In instantiation of âstd::tr1::_Result_of_implâ: /usr/lib/gcc/x86_64-redhat-linux/4.1.2/../../../../include/c++/4.1.2/tr1/functional:126: instantiated from âstd::tr1::result_ofâ /usr/lib/gcc/x86_64-redhat-linux/4.1.2/../../../../include/c++/4.1.2/tr1/bind_iterate.h:44: instantiated from âstd::tr1::_Bindâ lab2.cpp:80: instantiated from here /usr/lib/gcc/x86_64-redhat-linux/4.1.2/../../../../include/c++/4.1.2/tr1/functional_iterate.h:106: error: âintâ is not a class, struct, or union type /usr/lib/gcc/x86_64-redhat-linux/4.1.2/../../../../include/c++/4.1.2/tr1/functional_iterate.h: In instantiation of âstd::tr1::_Result_of_implâ: /usr/lib/gcc/x86_64-redhat-linux/4.1.2/../../../../include/c++/4.1.2/tr1/functional:126: instantiated from âstd::tr1::result_ofâ /usr/lib/gcc/x86_64-redhat-linux/4.1.2/../../../../include/c++/4.1.2/tr1/bind_iterate.h:55: instantiated from âstd::tr1::_Bindâ lab2.cpp:80: instantiated from here /usr/lib/gcc/x86_64-redhat-linux/4.1.2/../../../../include/c++/4.1.2/tr1/functional_iterate.h:106: error: âconst intâ is not a class, struct, or union type /usr/lib/gcc/x86_64-redhat-linux/4.1.2/../../../../include/c++/4.1.2/tr1/functional_iterate.h: In instantiation of âstd::tr1::_Result_of_implâ: /usr/lib/gcc/x86_64-redhat-linux/4.1.2/../../../../include/c++/4.1.2/tr1/functional:126: instantiated from âstd::tr1::result_ofâ /usr/lib/gcc/x86_64-redhat-linux/4.1.2/../../../../include/c++/4.1.2/tr1/bind_iterate.h:66: instantiated from âstd::tr1::_Bindâ lab2.cpp:80: instantiated from here /usr/lib/gcc/x86_64-redhat-linux/4.1.2/../../../../include/c++/4.1.2/tr1/functional_iterate.h:106: error: âvolatile intâ is not a class, struct, or union type /usr/lib/gcc/x86_64-redhat-linux/4.1.2/../../../../include/c++/4.1.2/tr1/functional_iterate.h: In instantiation of âstd::tr1::_Result_of_implâ: /usr/lib/gcc/x86_64-redhat-linux/4.1.2/../../../../include/c++/4.1.2/tr1/functional:126: instantiated from âstd::tr1::result_ofâ /usr/lib/gcc/x86_64-redhat-linux/4.1.2/../../../../include/c++/4.1.2/tr1/bind_iterate.h:77: instantiated from âstd::tr1::_Bindâ lab2.cpp:80: instantiated from here /usr/lib/gcc/x86_64-redhat-linux/4.1.2/../../../../include/c++/4.1.2/tr1/functional_iterate.h:106: error: âconst volatile intâ is not a class, struct, or union type lab2.cpp: In constructor âlab1::Server::Server(int)â: lab2.cpp:80: error: could not convert âstd::tr1::bind [with _Functor = int, _T1 = sockaddr*, _T2 = long unsigned int](((lab1::Server*)this)->lab1::Server::listen_fd_, ((sockaddr*)(& server_endpoint)), 16ul)â to âboolâ thread.hpp: In function âint main(int, char**)â: thread.hpp:34: error: too many arguments to function âpthread_t base::makeThread(base::ThreadBody)â lab2.cpp:229: error: at this point in file /usr/lib/gcc/x86_64-redhat-linux/4.1.2/../../../../include/c++/4.1.2/tr1/bind_iterate.h: In member function âtypename std::tr1::result_of::type std::tr1::_Bind:perator()() [with _Functor = std::tr1::_Mem_fn]â: /usr/lib/gcc/x86_64-redhat-linux/4.1.2/../../../../include/c++/4.1.2/tr1/functional_iterate.h:502: instantiated from âstatic void std::tr1::_Function_handler::_M_invoke(const std::tr1::_Any_data&) [with _Functor = std::tr1::_Bind ()()>]â /usr/lib/gcc/x86_64-redhat-linux/4.1.2/../../../../include/c++/4.1.2/tr1/functional_iterate.h:850: instantiated from âstd::tr1::function::function(_Functor, typename std::__enable_if::_Useless, (! std::tr1::is_integral::value)>::__type) [with _Functor = std::tr1::_Bind ()()>, _Res = void]â lab2.cpp:229: instantiated from here /usr/lib/gcc/x86_64-redhat-linux/4.1.2/../../../../include/c++/4.1.2/tr1/bind_iterate.h:45: error: no match for call to â(std::tr1::_Mem_fn) ()â /usr/lib/gcc/x86_64-redhat-linux/4.1.2/../../../../include/c++/4.1.2/tr1/functional_iterate.h:207: note: candidates are: _Res std::tr1::_Mem_fn:perator()(_Class&) const [with _Res = void, _Class = lab1::Server] /usr/lib/gcc/x86_64-redhat-linux/4.1.2/../../../../include/c++/4.1.2/tr1/functional_iterate.h:213: note: _Res std::tr1::_Mem_fn:perator()(_Class*) const [with _Res = void, _Class = lab1::Server] /usr/lib/gcc/x86_64-redhat-linux/4.1.2/../../../../include/c++/4.1.2/tr1/bind_iterate.h:45: error: return-statement with a value, in function returning 'void' make: *** [lab2_server] Error 1