我有这个 header (从 boost asio 示例重做):
#ifndef MSGSRV_H_
#define MSGSRV_H_
#include <asio.hpp>
#include <boost/array.hpp>
#include <boost/bind.hpp>
#include <boost/shared_ptr.hpp>
#include <boost/system/error_code.hpp>
namespace msgSrv {
class msgSrv {
private:
asio::ip::udp::socket *asioSocket;
asio::io_service *asioIoService;
int listenPort;
boost::array<char,1> rcvBuff;
asio::ip::udp::endpoint lastRcvdPcktEndp;
public:
msgSrv(int listenPort);
virtual ~msgSrv();
void start();
void pckRcvd( boost::system::error_code &, std::size_t);
};
}
和.cpp:
#include "msgSrv.h"
namespace msgSrv {
msgSrv::msgSrv(int listenPort) {
// TODO Auto-generated constructor stub
this->listenPort = listenPort;
try{
asioIoService = new asio::io_service();
asioSocket = new asio::ip::udp::socket(*asioIoService, asio::ip::udp::endpoint(asio::ip::udp::v4(), listenPort)); //new asio::ip::udp::socket_(*asioIoService, udp::endpoint(udp::v4(), listenPort));
}catch(std::exception &e){
std::cerr << "Error initializing ioservice or socket:" << e.what();
}
}
msgSrv::~msgSrv() {
// TODO Auto-generated destructor stub
delete asioIoService;
delete asioSocket;
}
void msgSrv::start(){
asioSocket->async_receive_from(
asio::buffer(rcvBuff), lastRcvdPcktEndp,
boost::bind(&msgSrv::pckRcvd, this,
asio::placeholders::error,
asio::placeholders::bytes_transferred));
}
void msgSrv::pckRcvd( boost::system::error_code &error, std::size_t bytesRcvd){
std::cout << "Rcvd!\n";
}
}
现在，它拒绝编译，给出无法理解的结果:
> make all
Building file: ../src/msgSrv/msgSrv.cpp
Invoking: GCC C++ Compiler
g++ -O0 -g3 -Wall -c -fmessage-length=0 -MMD -MP -MF"src/msgSrv/msgSrv.d" -MT"src/msgSrv/msgSrv.d" -o"src/msgSrv/msgSrv.o" "../src/msgSrv/msgSrv.cpp"
/usr/include/boost/bind.hpp: In member function ‘void boost::_bi::list3<A1, A2, A3>::operator()(boost::_bi::type<void>, F&, A&, int) [with F = boost::_mfi::mf2<void, msgSrv::msgSrv, boost::system::error_code&, unsigned int>, A = boost::_bi::list2<asio::error::basic_errors&, int&>, A1 = boost::_bi::value<msgSrv::msgSrv*>, A2 = boost::arg<1> (*)(), A3 = boost::arg<2> (*)()]’:
/usr/include/boost/bind/bind_template.hpp:61: instantiated from ‘typename boost::_bi::result_traits<R, F>::type boost::_bi::bind_t<R, F, L>::operator()(A1&, A2&) [with A1 = asio::error::basic_errors, A2 = int, R = void, F = boost::_mfi::mf2<void, msgSrv::msgSrv, boost::system::error_code&, unsigned int>, L = boost::_bi::list3<boost::_bi::value<msgSrv::msgSrv*>, boost::arg<1> (*)(), boost::arg<2> (*)()>]’
/usr/include/asio/detail/bind_handler.hpp:95: instantiated from ‘void asio::detail::binder2<Handler, Arg1, Arg2>::operator()() [with Handler = boost::_bi::bind_t<void, boost::_mfi::mf2<void, msgSrv::msgSrv, boost::system::error_code&, unsigned int>, boost::_bi::list3<boost::_bi::value<msgSrv::msgSrv*>, boost::arg<1> (*)(), boost::arg<2> (*)()> >, Arg1 = asio::error::basic_errors, Arg2 = int]’
/usr/include/asio/handler_invoke_hook.hpp:62: instantiated from ‘void asio::asio_handler_invoke(Function, ...) [with Function = asio::detail::binder2<boost::_bi::bind_t<void, boost::_mfi::mf2<void, msgSrv::msgSrv, boost::system::error_code&, unsigned int>, boost::_bi::list3<boost::_bi::value<msgSrv::msgSrv*>, boost::arg<1> (*)(), boost::arg<2> (*)()> >, asio::error::basic_errors, int>]’
/usr/include/asio/detail/handler_invoke_helpers.hpp:39: instantiated from ‘void asio_handler_invoke_helpers::invoke(const Function&, Context*) [with Function = asio::detail::binder2<boost::_bi::bind_t<void, boost::_mfi::mf2<void, msgSrv::msgSrv, boost::system::error_code&, unsigned int>, boost::_bi::list3<boost::_bi::value<msgSrv::msgSrv*>, boost::arg<1> (*)(), boost::arg<2> (*)()> >, asio::error::basic_errors, int>, Context = boost::_bi::bind_t<void, boost::_mfi::mf2<void, msgSrv::msgSrv, boost::system::error_code&, unsigned int>, boost::_bi::list3<boost::_bi::value<msgSrv::msgSrv*>, boost::arg<1> (*)(), boost::arg<2> (*)()> >]’
/usr/include/asio/detail/bind_handler.hpp:129: instantiated from ‘void asio::detail::asio_handler_invoke(const Function&, asio::detail::binder2<Handler, Arg1, Arg2>*) [with Function = asio::detail::binder2<boost::_bi::bind_t<void, boost::_mfi::mf2<void, msgSrv::msgSrv, boost::system::error_code&, unsigned int>, boost::_bi::list3<boost::_bi::value<msgSrv::msgSrv*>, boost::arg<1> (*)(), boost::arg<2> (*)()> >, asio::error::basic_errors, int>, Handler = boost::_bi::bind_t<void, boost::_mfi::mf2<void, msgSrv::msgSrv, boost::system::error_code&, unsigned int>, boost::_bi::list3<boost::_bi::value<msgSrv::msgSrv*>, boost::arg<1> (*)(), boost::arg<2> (*)()> >, Arg1 = asio::error::basic_errors, Arg2 = int]’
/usr/include/asio/detail/handler_invoke_helpers.hpp:39: instantiated from ‘void asio_handler_invoke_helpers::invoke(const Function&, Context*) [with Function = asio::detail::binder2<boost::_bi::bind_t<void, boost::_mfi::mf2<void, msgSrv::msgSrv, boost::system::error_code&, unsigned int>, boost::_bi::list3<boost::_bi::value<msgSrv::msgSrv*>, boost::arg<1> (*)(), boost::arg<2> (*)()> >, asio::error::basic_errors, int>, Context = asio::detail::binder2<boost::_bi::bind_t<void, boost::_mfi::mf2<void, msgSrv::msgSrv, boost::system::error_code&, unsigned int>, boost::_bi::list3<boost::_bi::value<msgSrv::msgSrv*>, boost::arg<1> (*)(), boost::arg<2> (*)()> >, asio::error::basic_errors, int>]’
/usr/include/asio/detail/handler_queue.hpp:191: instantiated from ‘static void asio::detail::handler_queue::handler_wrapper<Handler>::do_call(asio::detail::handler_queue::handler*) [with Handler = asio::detail::binder2<boost::_bi::bind_t<void, boost::_mfi::mf2<void, msgSrv::msgSrv, boost::system::error_code&, unsigned int>, boost::_bi::list3<boost::_bi::value<msgSrv::msgSrv*>, boost::arg<1> (*)(), boost::arg<2> (*)()> >, asio::error::basic_errors, int>]’
/usr/include/asio/detail/handler_queue.hpp:171: instantiated from ‘asio::detail::handler_queue::handler_wrapper<Handler>::handler_wrapper(Handler) [with Handler = asio::detail::binder2<boost::_bi::bind_t<void, boost::_mfi::mf2<void, msgSrv::msgSrv, boost::system::error_code&, unsigned int>, boost::_bi::list3<boost::_bi::value<msgSrv::msgSrv*>, boost::arg<1> (*)(), boost::arg<2> (*)()> >, asio::error::basic_errors, int>]’
/usr/include/asio/detail/handler_alloc_helpers.hpp:137: instantiated from ‘asio::detail::handler_ptr<Alloc_Traits>::handler_ptr(asio::detail::raw_handler_ptr<Alloc_Traits>&, Arg1&) [with Arg1 = asio::detail::binder2<boost::_bi::bind_t<void, boost::_mfi::mf2<void, msgSrv::msgSrv, boost::system::error_code&, unsigned int>, boost::_bi::list3<boost::_bi::value<msgSrv::msgSrv*>, boost::arg<1> (*)(), boost::arg<2> (*)()> >, asio::error::basic_errors, int>, Alloc_Traits = asio::detail::handler_alloc_traits<asio::detail::binder2<boost::_bi::bind_t<void, boost::_mfi::mf2<void, msgSrv::msgSrv, boost::system::error_code&, unsigned int>, boost::_bi::list3<boost::_bi::value<msgSrv::msgSrv*>, boost::arg<1> (*)(), boost::arg<2> (*)()> >, asio::error::basic_errors, int>, asio::detail::handler_queue::handler_wrapper<asio::detail::binder2<boost::_bi::bind_t<void, boost::_mfi::mf2<void, msgSrv::msgSrv, boost::system::error_code&, unsigned int>, boost::_bi::list3<boost::_bi::value<msgSrv::msgSrv*>, boost::arg<1> (*)(), boost::arg<2> (*)()> >, asio::error::basic_errors, int> > >]’
/usr/include/asio/detail/handler_queue.hpp:116: instantiated from ‘static asio::detail::handler_queue::handler* asio::detail::handler_queue::wrap(Handler) [with Handler = asio::detail::binder2<boost::_bi::bind_t<void, boost::_mfi::mf2<void, msgSrv::msgSrv, boost::system::error_code&, unsigned int>, boost::_bi::list3<boost::_bi::value<msgSrv::msgSrv*>, boost::arg<1> (*)(), boost::arg<2> (*)()> >, asio::error::basic_errors, int>]’
/usr/include/asio/detail/task_io_service.hpp:190: instantiated from ‘void asio::detail::task_io_service<Task>::post(Handler) [with Handler = asio::detail::binder2<boost::_bi::bind_t<void, boost::_mfi::mf2<void, msgSrv::msgSrv, boost::system::error_code&, unsigned int>, boost::_bi::list3<boost::_bi::value<msgSrv::msgSrv*>, boost::arg<1> (*)(), boost::arg<2> (*)()> >, asio::error::basic_errors, int>, Task = asio::detail::epoll_reactor<false>]’
/usr/include/asio/impl/io_service.ipp:125: instantiated from ‘void asio::io_service::post(Handler) [with CompletionHandler = asio::detail::binder2<boost::_bi::bind_t<void, boost::_mfi::mf2<void, msgSrv::msgSrv, boost::system::error_code&, unsigned int>, boost::_bi::list3<boost::_bi::value<msgSrv::msgSrv*>, boost::arg<1> (*)(), boost::arg<2> (*)()> >, asio::error::basic_errors, int>]’
/usr/include/asio/detail/reactive_socket_service.hpp:1376: instantiated from ‘void asio::detail::reactive_socket_service<Protocol, Reactor>::async_receive_from(asio::detail::reactive_socket_service<Protocol, Reactor>::implementation_type&, const MutableBufferSequence&, typename Protocol::endpoint&, int, Handler) [with MutableBufferSequence = asio::mutable_buffers_1, Handler = boost::_bi::bind_t<void, boost::_mfi::mf2<void, msgSrv::msgSrv, boost::system::error_code&, unsigned int>, boost::_bi::list3<boost::_bi::value<msgSrv::msgSrv*>, boost::arg<1> (*)(), boost::arg<2> (*)()> >, Protocol = asio::ip::udp, Reactor = asio::detail::epoll_reactor<false>]’
/usr/include/asio/datagram_socket_service.hpp:310: instantiated from ‘void asio::datagram_socket_service<Protocol>::async_receive_from(typename asio::detail::reactive_socket_service<Protocol, asio::detail::epoll_reactor<false> >::implementation_type&, const MutableBufferSequence&, typename Protocol::endpoint&, int, ReadHandler) [with MutableBufferSequence = asio::mutable_buffers_1, ReadHandler = boost::_bi::bind_t<void, boost::_mfi::mf2<void, msgSrv::msgSrv, boost::system::error_code&, unsigned int>, boost::_bi::list3<boost::_bi::value<msgSrv::msgSrv*>, boost::arg<1> (*)(), boost::arg<2> (*)()> >, Protocol = asio::ip::udp]’
/usr/include/asio/basic_datagram_socket.hpp:756: instantiated from ‘void asio::basic_datagram_socket<Protocol, DatagramSocketService>::async_receive_from(const MutableBufferSequence&, typename Protocol::endpoint&, ReadHandler) [with MutableBufferSequence = asio::mutable_buffers_1, ReadHandler = boost::_bi::bind_t<void, boost::_mfi::mf2<void, msgSrv::msgSrv, boost::system::error_code&, unsigned int>, boost::_bi::list3<boost::_bi::value<msgSrv::msgSrv*>, boost::arg<1> (*)(), boost::arg<2> (*)()> >, Protocol = asio::ip::udp, DatagramSocketService = asio::datagram_socket_service<asio::ip::udp>]’
../src/msgSrv/msgSrv.cpp:37: instantiated from here
/usr/include/boost/bind.hpp:348: error: no match for call to ‘(boost::_mfi::mf2<void, msgSrv::msgSrv, boost::system::error_code&, unsigned int>) (msgSrv::msgSrv*&, asio::error::basic_errors&, int&)’
/usr/include/boost/bind/mem_fn_template.hpp:272: note: candidates are: R boost::_mfi::mf2<R, T, A1, A2>::operator()(T*, A1, A2) const [with R = void, T = msgSrv::msgSrv, A1 = boost::system::error_code&, A2 = unsigned int]
/usr/include/boost/bind/mem_fn_template.hpp:291: note: R boost::_mfi::mf2<R, T, A1, A2>::operator()(T&, A1, A2) const [with R = void, T = msgSrv::msgSrv, A1 = boost::system::error_code&, A2 = unsigned int]
/usr/include/boost/bind.hpp: In member function ‘void boost::_bi::list3<A1, A2, A3>::operator()(boost::_bi::type<void>, F&, A&, int) [with F = boost::_mfi::mf2<void, msgSrv::msgSrv, boost::system::error_code&, unsigned int>, A = boost::_bi::list2<asio::error_code&, int&>, A1 = boost::_bi::value<msgSrv::msgSrv*>, A2 = boost::arg<1> (*)(), A3 = boost::arg<2> (*)()]’:
/usr/include/boost/bind/bind_template.hpp:61: instantiated from ‘typename boost::_bi::result_traits<R, F>::type boost::_bi::bind_t<R, F, L>::operator()(A1&, A2&) [with A1 = asio::error_code, A2 = int, R = void, F = boost::_mfi::mf2<void, msgSrv::msgSrv, boost::system::error_code&, unsigned int>, L = boost::_bi::list3<boost::_bi::value<msgSrv::msgSrv*>, boost::arg<1> (*)(), boost::arg<2> (*)()>]’
/usr/include/asio/detail/bind_handler.hpp:95: instantiated from ‘void asio::detail::binder2<Handler, Arg1, Arg2>::operator()() [with Handler = boost::_bi::bind_t<void, boost::_mfi::mf2<void, msgSrv::msgSrv, boost::system::error_code&, unsigned int>, boost::_bi::list3<boost::_bi::value<msgSrv::msgSrv*>, boost::arg<1> (*)(), boost::arg<2> (*)()> >, Arg1 = asio::error_code, Arg2 = int]’
/usr/include/asio/handler_invoke_hook.hpp:62: instantiated from ‘void asio::asio_handler_invoke(Function, ...) [with Function = asio::detail::binder2<boost::_bi::bind_t<void, boost::_mfi::mf2<void, msgSrv::msgSrv, boost::system::error_code&, unsigned int>, boost::_bi::list3<boost::_bi::value<msgSrv::msgSrv*>, boost::arg<1> (*)(), boost::arg<2> (*)()> >, asio::error_code, int>]’
/usr/include/asio/detail/handler_invoke_helpers.hpp:39: instantiated from ‘void asio_handler_invoke_helpers::invoke(const Function&, Context*) [with Function = asio::detail::binder2<boost::_bi::bind_t<void, boost::_mfi::mf2<void, msgSrv::msgSrv, boost::system::error_code&, unsigned int>, boost::_bi::list3<boost::_bi::value<msgSrv::msgSrv*>, boost::arg<1> (*)(), boost::arg<2> (*)()> >, asio::error_code, int>, Context = boost::_bi::bind_t<void, boost::_mfi::mf2<void, msgSrv::msgSrv, boost::system::error_code&, unsigned int>, boost::_bi::list3<boost::_bi::value<msgSrv::msgSrv*>, boost::arg<1> (*)(), boost::arg<2> (*)()> >]’
/usr/include/asio/detail/bind_handler.hpp:129: instantiated from ‘void asio::detail::asio_handler_invoke(const Function&, asio::detail::binder2<Handler, Arg1, Arg2>*) [with Function = asio::detail::binder2<boost::_bi::bind_t<void, boost::_mfi::mf2<void, msgSrv::msgSrv, boost::system::error_code&, unsigned int>, boost::_bi::list3<boost::_bi::value<msgSrv::msgSrv*>, boost::arg<1> (*)(), boost::arg<2> (*)()> >, asio::error_code, int>, Handler = boost::_bi::bind_t<void, boost::_mfi::mf2<void, msgSrv::msgSrv, boost::system::error_code&, unsigned int>, boost::_bi::list3<boost::_bi::value<msgSrv::msgSrv*>, boost::arg<1> (*)(), boost::arg<2> (*)()> >, Arg1 = asio::error_code, Arg2 = int]’
/usr/include/asio/detail/handler_invoke_helpers.hpp:39: instantiated from ‘void asio_handler_invoke_helpers::invoke(const Function&, Context*) [with Function = asio::detail::binder2<boost::_bi::bind_t<void, boost::_mfi::mf2<void, msgSrv::msgSrv, boost::system::error_code&, unsigned int>, boost::_bi::list3<boost::_bi::value<msgSrv::msgSrv*>, boost::arg<1> (*)(), boost::arg<2> (*)()> >, asio::error_code, int>, Context = asio::detail::binder2<boost::_bi::bind_t<void, boost::_mfi::mf2<void, msgSrv::msgSrv, boost::system::error_code&, unsigned int>, boost::_bi::list3<boost::_bi::value<msgSrv::msgSrv*>, boost::arg<1> (*)(), boost::arg<2> (*)()> >, asio::error_code, int>]’
/usr/include/asio/detail/handler_queue.hpp:191: instantiated from ‘static void asio::detail::handler_queue::handler_wrapper<Handler>::do_call(asio::detail::handler_queue::handler*) [with Handler = asio::detail::binder2<boost::_bi::bind_t<void, boost::_mfi::mf2<void, msgSrv::msgSrv, boost::system::error_code&, unsigned int>, boost::_bi::list3<boost::_bi::value<msgSrv::msgSrv*>, boost::arg<1> (*)(), boost::arg<2> (*)()> >, asio::error_code, int>]’
/usr/include/asio/detail/handler_queue.hpp:171: instantiated from ‘asio::detail::handler_queue::handler_wrapper<Handler>::handler_wrapper(Handler) [with Handler = asio::detail::binder2<boost::_bi::bind_t<void, boost::_mfi::mf2<void, msgSrv::msgSrv, boost::system::error_code&, unsigned int>, boost::_bi::list3<boost::_bi::value<msgSrv::msgSrv*>, boost::arg<1> (*)(), boost::arg<2> (*)()> >, asio::error_code, int>]’
/usr/include/asio/detail/handler_alloc_helpers.hpp:137: instantiated from ‘asio::detail::handler_ptr<Alloc_Traits>::handler_ptr(asio::detail::raw_handler_ptr<Alloc_Traits>&, Arg1&) [with Arg1 = asio::detail::binder2<boost::_bi::bind_t<void, boost::_mfi::mf2<void, msgSrv::msgSrv, boost::system::error_code&, unsigned int>, boost::_bi::list3<boost::_bi::value<msgSrv::msgSrv*>, boost::arg<1> (*)(), boost::arg<2> (*)()> >, asio::error_code, int>, Alloc_Traits = asio::detail::handler_alloc_traits<asio::detail::binder2<boost::_bi::bind_t<void, boost::_mfi::mf2<void, msgSrv::msgSrv, boost::system::error_code&, unsigned int>, boost::_bi::list3<boost::_bi::value<msgSrv::msgSrv*>, boost::arg<1> (*)(), boost::arg<2> (*)()> >, asio::error_code, int>, asio::detail::handler_queue::handler_wrapper<asio::detail::binder2<boost::_bi::bind_t<void, boost::_mfi::mf2<void, msgSrv::msgSrv, boost::system::error_code&, unsigned int>, boost::_bi::list3<boost::_bi::value<msgSrv::msgSrv*>, boost::arg<1> (*)(), boost::arg<2> (*)()> >, asio::error_code, int> > >]’
/usr/include/asio/detail/handler_queue.hpp:116: instantiated from ‘static asio::detail::handler_queue::handler* asio::detail::handler_queue::wrap(Handler) [with Handler = asio::detail::binder2<boost::_bi::bind_t<void, boost::_mfi::mf2<void, msgSrv::msgSrv, boost::system::error_code&, unsigned int>, boost::_bi::list3<boost::_bi::value<msgSrv::msgSrv*>, boost::arg<1> (*)(), boost::arg<2> (*)()> >, asio::error_code, int>]’
/usr/include/asio/detail/task_io_service.hpp:190: instantiated from ‘void asio::detail::task_io_service<Task>::post(Handler) [with Handler = asio::detail::binder2<boost::_bi::bind_t<void, boost::_mfi::mf2<void, msgSrv::msgSrv, boost::system::error_code&, unsigned int>, boost::_bi::list3<boost::_bi::value<msgSrv::msgSrv*>, boost::arg<1> (*)(), boost::arg<2> (*)()> >, asio::error_code, int>, Task = asio::detail::epoll_reactor<false>]’
/usr/include/asio/impl/io_service.ipp:125: instantiated from ‘void asio::io_service::post(Handler) [with CompletionHandler = asio::detail::binder2<boost::_bi::bind_t<void, boost::_mfi::mf2<void, msgSrv::msgSrv, boost::system::error_code&, unsigned int>, boost::_bi::list3<boost::_bi::value<msgSrv::msgSrv*>, boost::arg<1> (*)(), boost::arg<2> (*)()> >, asio::error_code, int>]’
/usr/include/asio/detail/reactive_socket_service.hpp:1390: instantiated from ‘void asio::detail::reactive_socket_service<Protocol, Reactor>::async_receive_from(asio::detail::reactive_socket_service<Protocol, Reactor>::implementation_type&, const MutableBufferSequence&, typename Protocol::endpoint&, int, Handler) [with MutableBufferSequence = asio::mutable_buffers_1, Handler = boost::_bi::bind_t<void, boost::_mfi::mf2<void, msgSrv::msgSrv, boost::system::error_code&, unsigned int>, boost::_bi::list3<boost::_bi::value<msgSrv::msgSrv*>, boost::arg<1> (*)(), boost::arg<2> (*)()> >, Protocol = asio::ip::udp, Reactor = asio::detail::epoll_reactor<false>]’
/usr/include/asio/datagram_socket_service.hpp:310: instantiated from ‘void asio::datagram_socket_service<Protocol>::async_receive_from(typename asio::detail::reactive_socket_service<Protocol, asio::detail::epoll_reactor<false> >::implementation_type&, const MutableBufferSequence&, typename Protocol::endpoint&, int, ReadHandler) [with MutableBufferSequence = asio::mutable_buffers_1, ReadHandler = boost::_bi::bind_t<void, boost::_mfi::mf2<void, msgSrv::msgSrv, boost::system::error_code&, unsigned int>, boost::_bi::list3<boost::_bi::value<msgSrv::msgSrv*>, boost::arg<1> (*)(), boost::arg<2> (*)()> >, Protocol = asio::ip::udp]’
/usr/include/asio/basic_datagram_socket.hpp:756: instantiated from ‘void asio::basic_datagram_socket<Protocol, DatagramSocketService>::async_receive_from(const MutableBufferSequence&, typename Protocol::endpoint&, ReadHandler) [with MutableBufferSequence = asio::mutable_buffers_1, ReadHandler = boost::_bi::bind_t<void, boost::_mfi::mf2<void, msgSrv::msgSrv, boost::system::error_code&, unsigned int>, boost::_bi::list3<boost::_bi::value<msgSrv::msgSrv*>, boost::arg<1> (*)(), boost::arg<2> (*)()> >, Protocol = asio::ip::udp, DatagramSocketService = asio::datagram_socket_service<asio::ip::udp>]’
../src/msgSrv/msgSrv.cpp:37: instantiated from here
/usr/include/boost/bind.hpp:348: error: no match for call to ‘(boost::_mfi::mf2<void, msgSrv::msgSrv, boost::system::error_code&, unsigned int>) (msgSrv::msgSrv*&, asio::error_code&, int&)’
/usr/include/boost/bind/mem_fn_template.hpp:272: note: candidates are: R boost::_mfi::mf2<R, T, A1, A2>::operator()(T*, A1, A2) const [with R = void, T = msgSrv::msgSrv, A1 = boost::system::error_code&, A2 = unsigned int]
/usr/include/boost/bind/mem_fn_template.hpp:291: note: R boost::_mfi::mf2<R, T, A1, A2>::operator()(T&, A1, A2) const [with R = void, T = msgSrv::msgSrv, A1 = boost::system::error_code&, A2 = unsigned int]
/usr/include/boost/bind.hpp: In member function ‘void boost::_bi::list3<A1, A2, A3>::operator()(boost::_bi::type<void>, F&, A&, int) [with F = boost::_mfi::mf2<void, msgSrv::msgSrv, boost::system::error_code&, unsigned int>, A = boost::_bi::list2<asio::error_code&, unsigned int&>, A1 = boost::_bi::value<msgSrv::msgSrv*>, A2 = boost::arg<1> (*)(), A3 = boost::arg<2> (*)()]’:
/usr/include/boost/bind/bind_template.hpp:61: instantiated from ‘typename boost::_bi::result_traits<R, F>::type boost::_bi::bind_t<R, F, L>::operator()(A1&, A2&) [with A1 = asio::error_code, A2 = unsigned int, R = void, F = boost::_mfi::mf2<void, msgSrv::msgSrv, boost::system::error_code&, unsigned int>, L = boost::_bi::list3<boost::_bi::value<msgSrv::msgSrv*>, boost::arg<1> (*)(), boost::arg<2> (*)()>]’
/usr/include/asio/detail/bind_handler.hpp:95: instantiated from ‘void asio::detail::binder2<Handler, Arg1, Arg2>::operator()() [with Handler = boost::_bi::bind_t<void, boost::_mfi::mf2<void, msgSrv::msgSrv, boost::system::error_code&, unsigned int>, boost::_bi::list3<boost::_bi::value<msgSrv::msgSrv*>, boost::arg<1> (*)(), boost::arg<2> (*)()> >, Arg1 = asio::error_code, Arg2 = unsigned int]’
/usr/include/asio/handler_invoke_hook.hpp:62: instantiated from ‘void asio::asio_handler_invoke(Function, ...) [with Function = asio::detail::binder2<boost::_bi::bind_t<void, boost::_mfi::mf2<void, msgSrv::msgSrv, boost::system::error_code&, unsigned int>, boost::_bi::list3<boost::_bi::value<msgSrv::msgSrv*>, boost::arg<1> (*)(), boost::arg<2> (*)()> >, asio::error_code, unsigned int>]’
/usr/include/asio/detail/handler_invoke_helpers.hpp:39: instantiated from ‘void asio_handler_invoke_helpers::invoke(const Function&, Context*) [with Function = asio::detail::binder2<boost::_bi::bind_t<void, boost::_mfi::mf2<void, msgSrv::msgSrv, boost::system::error_code&, unsigned int>, boost::_bi::list3<boost::_bi::value<msgSrv::msgSrv*>, boost::arg<1> (*)(), boost::arg<2> (*)()> >, asio::error_code, unsigned int>, Context = boost::_bi::bind_t<void, boost::_mfi::mf2<void, msgSrv::msgSrv, boost::system::error_code&, unsigned int>, boost::_bi::list3<boost::_bi::value<msgSrv::msgSrv*>, boost::arg<1> (*)(), boost::arg<2> (*)()> >]’
/usr/include/asio/detail/bind_handler.hpp:129: instantiated from ‘void asio::detail::asio_handler_invoke(const Function&, asio::detail::binder2<Handler, Arg1, Arg2>*) [with Function = asio::detail::binder2<boost::_bi::bind_t<void, boost::_mfi::mf2<void, msgSrv::msgSrv, boost::system::error_code&, unsigned int>, boost::_bi::list3<boost::_bi::value<msgSrv::msgSrv*>, boost::arg<1> (*)(), boost::arg<2> (*)()> >, asio::error_code, unsigned int>, Handler = boost::_bi::bind_t<void, boost::_mfi::mf2<void, msgSrv::msgSrv, boost::system::error_code&, unsigned int>, boost::_bi::list3<boost::_bi::value<msgSrv::msgSrv*>, boost::arg<1> (*)(), boost::arg<2> (*)()> >, Arg1 = asio::error_code, Arg2 = unsigned int]’
/usr/include/asio/detail/handler_invoke_helpers.hpp:39: instantiated from ‘void asio_handler_invoke_helpers::invoke(const Function&, Context*) [with Function = asio::detail::binder2<boost::_bi::bind_t<void, boost::_mfi::mf2<void, msgSrv::msgSrv, boost::system::error_code&, unsigned int>, boost::_bi::list3<boost::_bi::value<msgSrv::msgSrv*>, boost::arg<1> (*)(), boost::arg<2> (*)()> >, asio::error_code, unsigned int>, Context = asio::detail::binder2<boost::_bi::bind_t<void, boost::_mfi::mf2<void, msgSrv::msgSrv, boost::system::error_code&, unsigned int>, boost::_bi::list3<boost::_bi::value<msgSrv::msgSrv*>, boost::arg<1> (*)(), boost::arg<2> (*)()> >, asio::error_code, unsigned int>]’
/usr/include/asio/detail/handler_queue.hpp:191: instantiated from ‘static void asio::detail::handler_queue::handler_wrapper<Handler>::do_call(asio::detail::handler_queue::handler*) [with Handler = asio::detail::binder2<boost::_bi::bind_t<void, boost::_mfi::mf2<void, msgSrv::msgSrv, boost::system::error_code&, unsigned int>, boost::_bi::list3<boost::_bi::value<msgSrv::msgSrv*>, boost::arg<1> (*)(), boost::arg<2> (*)()> >, asio::error_code, unsigned int>]’
/usr/include/asio/detail/handler_queue.hpp:171: instantiated from ‘asio::detail::handler_queue::handler_wrapper<Handler>::handler_wrapper(Handler) [with Handler = asio::detail::binder2<boost::_bi::bind_t<void, boost::_mfi::mf2<void, msgSrv::msgSrv, boost::system::error_code&, unsigned int>, boost::_bi::list3<boost::_bi::value<msgSrv::msgSrv*>, boost::arg<1> (*)(), boost::arg<2> (*)()> >, asio::error_code, unsigned int>]’
/usr/include/asio/detail/handler_alloc_helpers.hpp:137: instantiated from ‘asio::detail::handler_ptr<Alloc_Traits>::handler_ptr(asio::detail::raw_handler_ptr<Alloc_Traits>&, Arg1&) [with Arg1 = asio::detail::binder2<boost::_bi::bind_t<void, boost::_mfi::mf2<void, msgSrv::msgSrv, boost::system::error_code&, unsigned int>, boost::_bi::list3<boost::_bi::value<msgSrv::msgSrv*>, boost::arg<1> (*)(), boost::arg<2> (*)()> >, asio::error_code, unsigned int>, Alloc_Traits = asio::detail::handler_alloc_traits<asio::detail::binder2<boost::_bi::bind_t<void, boost::_mfi::mf2<void, msgSrv::msgSrv, boost::system::error_code&, unsigned int>, boost::_bi::list3<boost::_bi::value<msgSrv::msgSrv*>, boost::arg<1> (*)(), boost::arg<2> (*)()> >, asio::error_code, unsigned int>, asio::detail::handler_queue::handler_wrapper<asio::detail::binder2<boost::_bi::bind_t<void, boost::_mfi::mf2<void, msgSrv::msgSrv, boost::system::error_code&, unsigned int>, boost::_bi::list3<boost::_bi::value<msgSrv::msgSrv*>, boost::arg<1> (*)(), boost::arg<2> (*)()> >, asio::error_code, unsigned int> > >]’
/usr/include/asio/detail/handler_queue.hpp:116: instantiated from ‘static asio::detail::handler_queue::handler* asio::detail::handler_queue::wrap(Handler) [with Handler = asio::detail::binder2<boost::_bi::bind_t<void, boost::_mfi::mf2<void, msgSrv::msgSrv, boost::system::error_code&, unsigned int>, boost::_bi::list3<boost::_bi::value<msgSrv::msgSrv*>, boost::arg<1> (*)(), boost::arg<2> (*)()> >, asio::error_code, unsigned int>]’
/usr/include/asio/detail/task_io_service.hpp:190: instantiated from ‘void asio::detail::task_io_service<Task>::post(Handler) [with Handler = asio::detail::binder2<boost::_bi::bind_t<void, boost::_mfi::mf2<void, msgSrv::msgSrv, boost::system::error_code&, unsigned int>, boost::_bi::list3<boost::_bi::value<msgSrv::msgSrv*>, boost::arg<1> (*)(), boost::arg<2> (*)()> >, asio::error_code, unsigned int>, Task = asio::detail::epoll_reactor<false>]’
/usr/include/asio/impl/io_service.ipp:125: instantiated from ‘void asio::io_service::post(Handler) [with CompletionHandler = asio::detail::binder2<boost::_bi::bind_t<void, boost::_mfi::mf2<void, msgSrv::msgSrv, boost::system::error_code&, unsigned int>, boost::_bi::list3<boost::_bi::value<msgSrv::msgSrv*>, boost::arg<1> (*)(), boost::arg<2> (*)()> >, asio::error_code, unsigned int>]’
/usr/include/asio/detail/reactive_socket_service.hpp:1353: instantiated from ‘void asio::detail::reactive_socket_service<Protocol, Reactor>::receive_from_operation<MutableBufferSequence, Handler>::complete(const asio::error_code&, size_t) [with MutableBufferSequence = asio::mutable_buffers_1, Handler = boost::_bi::bind_t<void, boost::_mfi::mf2<void, msgSrv::msgSrv, boost::system::error_code&, unsigned int>, boost::_bi::list3<boost::_bi::value<msgSrv::msgSrv*>, boost::arg<1> (*)(),
……等等。我真的不知道该怎么办，因为我不明白错误是什么!
最佳答案
由于实例化的模板数量众多，错误消息很长，但大部分都提供了可能有用的上下文。我犯了第一个错误并剪掉了过长的行。
首先，编译器说明错误在哪里，以及导致特定模板实例的模板实例化顺序是什么导致实例化错误。
/usr/include/boost/bind.hpp: In member function ‘void boost::_bi::list3<A1, A2, A3>::operator()(boost::_bi::type<void>, F&, A&, int) ...
/usr/include/boost/bind/bind_template.hpp:61: instantiated from ...
/usr/include/asio/detail/bind_handler.hpp:95: instantiated from ...
/usr/include/asio/handler_invoke_hook.hpp:62: instantiated from ...
/usr/include/asio/detail/handler_invoke_helpers.hpp:39: instantiated from ...
/usr/include/asio/detail/bind_handler.hpp:129: instantiated from ...
/usr/include/asio/detail/handler_invoke_helpers.hpp:39: instantiated from ...
/usr/include/asio/detail/handler_queue.hpp:191: instantiated from ...
/usr/include/asio/detail/handler_queue.hpp:171: instantiated from ...
/usr/include/asio/detail/handler_alloc_helpers.hpp:137: instantiated from ...
/usr/include/asio/detail/handler_queue.hpp:116: instantiated from ...
/usr/include/asio/detail/task_io_service.hpp:190: instantiated from ...
/usr/include/asio/impl/io_service.ipp:125: instantiated from ...
/usr/include/asio/detail/reactive_socket_service.hpp:1376: instantiated from ...
/usr/include/asio/datagram_socket_service.hpp:310: instantiated from ...
/usr/include/asio/basic_datagram_socket.hpp:756: instantiated from ...
这是导致这一切发生的代码行:
../src/msgSrv/msgSrv.cpp:37: instantiated from here
这是真正的错误:
/usr/include/boost/bind.hpp:348: error: no match for call to ‘(boost::_mfi::mf2<void, msgSrv::msgSrv, boost::system::error_code&, unsigned int>) (msgSrv::msgSrv*&, asio::error::basic_errors&, int&)’
/usr/include/boost/bind/mem_fn_template.hpp:272: note: candidates are: R boost::_mfi::mf2<R, T, A1, A2>::operator()(T*, A1, A2) const [with R = void, T = msgSrv::msgSrv, A1 = boost::system::error_code&, A2 = unsigned int]
/usr/include/boost/bind/mem_fn_template.hpp:291: note: R boost::_mfi::mf2<R, T, A1, A2>::operator()(T&, A1, A2) const [with R = void, T = msgSrv::msgSrv, A1 = boost::system::error_code&, A2 = unsigned int]
为了传递参数，msgSrv::msgSrv*& 将转换为 msgSrv::msgSrv*，但是 A1 参数是一个引用，boost::system::error_code 和 asio::error::basic_errors 不是引用兼容。
编辑:
如果您阅读 read handler 的类型要求，您会看到处理程序使用第一个参数，该参数是const error_code 类型的l-value。这意味着您的第一个参数必须是 const boost::system::error_code&(即常量引用)或 boost::system::error_code，一个非引用参数。
关于c++ - Boost初学者，boost::bind噩梦，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/1149556/