Liaison de minuteur d'appoint

Question

J'essaie de configurer un minuteur à l'aide de la bibliothèque d'amplification.

En gros, voici ce que je l'ai écrit:

class ContactList { 
public: 
    ContactList(); 
    virtual ~ContactList(); 
    int Start(); 
    int readFromFile(); 
    int dumpList(); 
    void checkContacts(const boost::system::error_code& error); 
    void initializeTimer(); 

private: 
    std::list<Contact*> CList; 
    boost::asio::deadline_timer dt; 
    boost::asio::io_service ios; 
}; 

int ContactList::Start(){ 
... 
this->initializeTimer(); 
} 

void ContactList::checkContacts(const boost::system::error_code& error){ 
    std::cout<<"__Here we go!"<<std::endl; 
    ios.reset(); 
    initializeTimer(); 
} 

void ContactList::initializeTimer(){ 
    dt.expires_from_now(boost::posix_time::seconds(4)); 
    dt.async_wait(boost::bind(&ContactList::checkContacts, this, boost::asio::placeholders::error)); 
    ios.run(); 
} 

et le compilateur se plaint beaucoup, en disant:

g++ -O0 -g3 -Wall -c -fmessage-length=0 -MMD -MP -MF"kad/ContactList.d" -MT"kad/ContactList.d" -o"kad/ContactList.o" "../kad/ContactList.cpp" 
../kad/ContactList.cpp: In constructor ‘kad::ContactList::ContactList()’: 
../kad/ContactList.cpp:12: error: no matching function for call to ‘boost::asio::basic_deadline_timer<boost::posix_time::ptime, boost::asio::time_traits<boost::posix_time::ptime>, boost::asio::deadline_timer_service<boost::posix_time::ptime, boost::asio::time_traits<boost::posix_time::ptime> > >::basic_deadline_timer()’ 
/usr/include/boost/asio/basic_deadline_timer.hpp:177: note: candidates are: boost::asio::basic_deadline_timer<Time, TimeTraits, TimerService>::basic_deadline_timer(boost::asio::io_service&, const typename TimeTraits::duration_type&) [with Time = boost::posix_time::ptime, TimeTraits = boost::asio::time_traits<boost::posix_time::ptime>, TimerService = boost::asio::deadline_timer_service<boost::posix_time::ptime, boost::asio::time_traits<boost::posix_time::ptime> >] 
/usr/include/boost/asio/basic_deadline_timer.hpp:158: note:     boost::asio::basic_deadline_timer<Time, TimeTraits, TimerService>::basic_deadline_timer(boost::asio::io_service&, const typename TimeTraits::time_type&) [with Time = boost::posix_time::ptime, TimeTraits = boost::asio::time_traits<boost::posix_time::ptime>, TimerService = boost::asio::deadline_timer_service<boost::posix_time::ptime, boost::asio::time_traits<boost::posix_time::ptime> >] 
/usr/include/boost/asio/basic_deadline_timer.hpp:142: note:     boost::asio::basic_deadline_timer<Time, TimeTraits, TimerService>::basic_deadline_timer(boost::asio::io_service&) [with Time = boost::posix_time::ptime, TimeTraits = boost::asio::time_traits<boost::posix_time::ptime>, TimerService = boost::asio::deadline_timer_service<boost::posix_time::ptime, boost::asio::time_traits<boost::posix_time::ptime> >] 
/usr/include/boost/asio/basic_deadline_timer.hpp:122: note:     boost::asio::basic_deadline_timer<boost::posix_time::ptime, boost::asio::time_traits<boost::posix_time::ptime>, boost::asio::deadline_timer_service<boost::posix_time::ptime, boost::asio::time_traits<boost::posix_time::ptime> > >::basic_deadline_timer(const boost::asio::basic_deadline_timer<boost::posix_time::ptime, boost::asio::time_traits<boost::posix_time::ptime>, boost::asio::deadline_timer_service<boost::posix_time::ptime, boost::asio::time_traits<boost::posix_time::ptime> > >&) 
/usr/include/boost/mem_fn.hpp: In member function ‘R& boost::_mfi::dm<R, T>::operator()(T*) const [with R = void()(const boost::system::error_code&), T = kad::ContactList]’: 
/usr/include/boost/bind.hpp:222: instantiated from ‘R boost::_bi::list1<A1>::operator()(boost::_bi::type<R>, F&, A&, long int) [with R = void (&)(const boost::system::error_code&), F = boost::_mfi::dm<void()(const boost::system::error_code&), kad::ContactList>, A = boost::_bi::list1<boost::system::error_code&>, A1 = boost::_bi::value<kad::ContactList*>]’ 
/usr/include/boost/bind/bind_template.hpp:32: instantiated from ‘typename boost::_bi::result_traits<R, F>::type boost::_bi::bind_t<R, F, L>::operator()(A1&) [with A1 = boost::system::error_code, R = void (&)(const boost::system::error_code&), F = boost::_mfi::dm<void()(const boost::system::error_code&), kad::ContactList>, L = boost::_bi::list1<boost::_bi::value<kad::ContactList*> >]’ 
/usr/include/boost/asio/detail/bind_handler.hpp:39: instantiated from ‘void boost::asio::detail::binder1<Handler, Arg1>::operator()() [with Handler = boost::_bi::bind_t<void (&)(const boost::system::error_code&), boost::_mfi::dm<void()(const boost::system::error_code&), kad::ContactList>, boost::_bi::list1<boost::_bi::value<kad::ContactList*> > >, Arg1 = boost::system::error_code]’ 
/usr/include/boost/asio/handler_invoke_hook.hpp:63: instantiated from ‘void boost::asio::asio_handler_invoke(Function, ...) [with Function = boost::asio::detail::binder1<boost::_bi::bind_t<void (&)(const boost::system::error_code&), boost::_mfi::dm<void()(const boost::system::error_code&), kad::ContactList>, boost::_bi::list1<boost::_bi::value<kad::ContactList*> > >, boost::system::error_code>]’ 
/usr/include/boost/asio/detail/handler_invoke_helpers.hpp:39: instantiated from ‘void boost_asio_handler_invoke_helpers::invoke(const Function&, Context*) [with Function = boost::asio::detail::binder1<boost::_bi::bind_t<void (&)(const boost::system::error_code&), boost::_mfi::dm<void()(const boost::system::error_code&), kad::ContactList>, boost::_bi::list1<boost::_bi::value<kad::ContactList*> > >, boost::system::error_code>, Context = boost::_bi::bind_t<void (&)(const boost::system::error_code&), boost::_mfi::dm<void()(const boost::system::error_code&), kad::ContactList>, boost::_bi::list1<boost::_bi::value<kad::ContactList*> > >]’ 
/usr/include/boost/asio/detail/bind_handler.hpp:72: instantiated from ‘void boost::asio::detail::asio_handler_invoke(const Function&, boost::asio::detail::binder1<Handler, Arg1>*) [with Function = boost::asio::detail::binder1<boost::_bi::bind_t<void (&)(const boost::system::error_code&), boost::_mfi::dm<void()(const boost::system::error_code&), kad::ContactList>, boost::_bi::list1<boost::_bi::value<kad::ContactList*> > >, boost::system::error_code>, Handler = boost::_bi::bind_t<void (&)(const boost::system::error_code&), boost::_mfi::dm<void()(const boost::system::error_code&), kad::ContactList>, boost::_bi::list1<boost::_bi::value<kad::ContactList*> > >, Arg1 = boost::system::error_code]’ 
/usr/include/boost/asio/detail/handler_invoke_helpers.hpp:39: instantiated from ‘void boost_asio_handler_invoke_helpers::invoke(const Function&, Context*) [with Function = boost::asio::detail::binder1<boost::_bi::bind_t<void (&)(const boost::system::error_code&), boost::_mfi::dm<void()(const boost::system::error_code&), kad::ContactList>, boost::_bi::list1<boost::_bi::value<kad::ContactList*> > >, boost::system::error_code>, Context = boost::asio::detail::binder1<boost::_bi::bind_t<void (&)(const boost::system::error_code&), boost::_mfi::dm<void()(const boost::system::error_code&), kad::ContactList>, boost::_bi::list1<boost::_bi::value<kad::ContactList*> > >, boost::system::error_code>]’ 
/usr/include/boost/asio/detail/handler_queue.hpp:192: instantiated from ‘static void boost::asio::detail::handler_queue::handler_wrapper<Handler>::do_call(boost::asio::detail::handler_queue::handler*) [with Handler = boost::asio::detail::binder1<boost::_bi::bind_t<void (&)(const boost::system::error_code&), boost::_mfi::dm<void()(const boost::system::error_code&), kad::ContactList>, boost::_bi::list1<boost::_bi::value<kad::ContactList*> > >, boost::system::error_code>]’ 
/usr/include/boost/asio/detail/handler_queue.hpp:172: instantiated from ‘boost::asio::detail::handler_queue::handler_wrapper<Handler>::handler_wrapper(Handler) [with Handler = boost::asio::detail::binder1<boost::_bi::bind_t<void (&)(const boost::system::error_code&), boost::_mfi::dm<void()(const boost::system::error_code&), kad::ContactList>, boost::_bi::list1<boost::_bi::value<kad::ContactList*> > >, boost::system::error_code>]’ 
/usr/include/boost/asio/detail/handler_alloc_helpers.hpp:138: instantiated from ‘boost::asio::detail::handler_ptr<Alloc_Traits>::handler_ptr(boost::asio::detail::raw_handler_ptr<Alloc_Traits>&, Arg1&) [with Arg1 = boost::asio::detail::binder1<boost::_bi::bind_t<void (&)(const boost::system::error_code&), boost::_mfi::dm<void()(const boost::system::error_code&), kad::ContactList>, boost::_bi::list1<boost::_bi::value<kad::ContactList*> > >, boost::system::error_code>, Alloc_Traits = boost::asio::detail::handler_alloc_traits<boost::asio::detail::binder1<boost::_bi::bind_t<void (&)(const boost::system::error_code&), boost::_mfi::dm<void()(const boost::system::error_code&), kad::ContactList>, boost::_bi::list1<boost::_bi::value<kad::ContactList*> > >, boost::system::error_code>, boost::asio::detail::handler_queue::handler_wrapper<boost::asio::detail::binder1<boost::_bi::bind_t<void (&)(const boost::system::error_code&), boost::_mfi::dm<void()(const boost::system::error_code&), kad::ContactList>, boost::_bi::list1<boost::_bi::value<kad::ContactList*> > >, boost::system::error_code> > >]’ 
/usr/include/boost/asio/detail/handler_queue.hpp:117: instantiated from ‘static boost::asio::detail::handler_queue::handler* boost::asio::detail::handler_queue::wrap(Handler) [with Handler = boost::asio::detail::binder1<boost::_bi::bind_t<void (&)(const boost::system::error_code&), boost::_mfi::dm<void()(const boost::system::error_code&), kad::ContactList>, boost::_bi::list1<boost::_bi::value<kad::ContactList*> > >, boost::system::error_code>]’ 
/usr/include/boost/asio/detail/task_io_service.hpp:190: instantiated from ‘void boost::asio::detail::task_io_service<Task>::post(Handler) [with Handler = boost::asio::detail::binder1<boost::_bi::bind_t<void (&)(const boost::system::error_code&), boost::_mfi::dm<void()(const boost::system::error_code&), kad::ContactList>, boost::_bi::list1<boost::_bi::value<kad::ContactList*> > >, boost::system::error_code>, Task = boost::asio::detail::epoll_reactor<false>]’ 
/usr/include/boost/asio/impl/io_service.ipp:126: instantiated from ‘void boost::asio::io_service::post(Handler) [with CompletionHandler = boost::asio::detail::binder1<boost::_bi::bind_t<void (&)(const boost::system::error_code&), boost::_mfi::dm<void()(const boost::system::error_code&), kad::ContactList>, boost::_bi::list1<boost::_bi::value<kad::ContactList*> > >, boost::system::error_code>]’ 
/usr/include/boost/asio/detail/deadline_timer_service.hpp:172: instantiated from ‘void boost::asio::detail::deadline_timer_service<Time_Traits, Timer_Scheduler>::wait_handler<Handler>::operator()(const boost::system::error_code&) [with Handler = boost::_bi::bind_t<void (&)(const boost::system::error_code&), boost::_mfi::dm<void()(const boost::system::error_code&), kad::ContactList>, boost::_bi::list1<boost::_bi::value<kad::ContactList*> > >, Time_Traits = boost::asio::time_traits<boost::posix_time::ptime>, Timer_Scheduler = boost::asio::detail::epoll_reactor<false>]’ 
/usr/include/boost/asio/detail/timer_queue.hpp:299: instantiated from ‘static void boost::asio::detail::timer_queue<Time_Traits>::timer<Handler>::complete_handler(boost::asio::detail::timer_queue<Time_Traits>::timer_base*, const boost::system::error_code&) [with Handler = boost::asio::detail::deadline_timer_service<boost::asio::time_traits<boost::posix_time::ptime>, boost::asio::detail::epoll_reactor<false> >::wait_handler<boost::_bi::bind_t<void (&)(const boost::system::error_code&), boost::_mfi::dm<void()(const boost::system::error_code&), kad::ContactList>, boost::_bi::list1<boost::_bi::value<kad::ContactList*> > > >, Time_Traits = boost::asio::time_traits<boost::posix_time::ptime>]’ 
/usr/include/boost/asio/detail/timer_queue.hpp:276: instantiated from ‘boost::asio::detail::timer_queue<Time_Traits>::timer<Handler>::timer(const typename Time_Traits::time_type&, Handler, void*) [with Handler = boost::asio::detail::deadline_timer_service<boost::asio::time_traits<boost::posix_time::ptime>, boost::asio::detail::epoll_reactor<false> >::wait_handler<boost::_bi::bind_t<void (&)(const boost::system::error_code&), boost::_mfi::dm<void()(const boost::system::error_code&), kad::ContactList>, boost::_bi::list1<boost::_bi::value<kad::ContactList*> > > >, Time_Traits = boost::asio::time_traits<boost::posix_time::ptime>]’ 
/usr/include/boost/asio/detail/timer_queue.hpp:71: instantiated from ‘bool boost::asio::detail::timer_queue<Time_Traits>::enqueue_timer(const typename Time_Traits::time_type&, Handler, void*) [with Handler = boost::asio::detail::deadline_timer_service<boost::asio::time_traits<boost::posix_time::ptime>, boost::asio::detail::epoll_reactor<false> >::wait_handler<boost::_bi::bind_t<void (&)(const boost::system::error_code&), boost::_mfi::dm<void()(const boost::system::error_code&), kad::ContactList>, boost::_bi::list1<boost::_bi::value<kad::ContactList*> > > >, Time_Traits = boost::asio::time_traits<boost::posix_time::ptime>]’ 
/usr/include/boost/asio/detail/epoll_reactor.hpp:414: instantiated from ‘void boost::asio::detail::epoll_reactor<Own_Thread>::schedule_timer(boost::asio::detail::timer_queue<Time_Traits>&, const typename Time_Traits::time_type&, Handler, void*) [with Time_Traits = boost::asio::time_traits<boost::posix_time::ptime>, Handler = boost::asio::detail::deadline_timer_service<boost::asio::time_traits<boost::posix_time::ptime>, boost::asio::detail::epoll_reactor<false> >::wait_handler<boost::_bi::bind_t<void (&)(const boost::system::error_code&), boost::_mfi::dm<void()(const boost::system::error_code&), kad::ContactList>, boost::_bi::list1<boost::_bi::value<kad::ContactList*> > > >, bool Own_Thread = false]’ 
/usr/include/boost/asio/detail/deadline_timer_service.hpp:185: instantiated from ‘void boost::asio::detail::deadline_timer_service<Time_Traits, Timer_Scheduler>::async_wait(boost::asio::detail::deadline_timer_service<Time_Traits, Timer_Scheduler>::implementation_type&, Handler) [with Handler = boost::_bi::bind_t<void (&)(const boost::system::error_code&), boost::_mfi::dm<void()(const boost::system::error_code&), kad::ContactList>, boost::_bi::list1<boost::_bi::value<kad::ContactList*> > >, Time_Traits = boost::asio::time_traits<boost::posix_time::ptime>, Timer_Scheduler = boost::asio::detail::epoll_reactor<false>]’ 
/usr/include/boost/asio/deadline_timer_service.hpp:157: instantiated from ‘void boost::asio::deadline_timer_service<TimeType, TimeTraits>::async_wait(typename boost::asio::detail::deadline_timer_service<TimeTraits, boost::asio::detail::epoll_reactor<false> >::implementation_type&, WaitHandler) [with WaitHandler = boost::_bi::bind_t<void (&)(const boost::system::error_code&), boost::_mfi::dm<void()(const boost::system::error_code&), kad::ContactList>, boost::_bi::list1<boost::_bi::value<kad::ContactList*> > >, TimeType = boost::posix_time::ptime, TimeTraits = boost::asio::time_traits<boost::posix_time::ptime>]’ 
/usr/include/boost/asio/basic_deadline_timer.hpp:374: instantiated from ‘void boost::asio::basic_deadline_timer<Time, TimeTraits, TimerService>::async_wait(WaitHandler) [with WaitHandler = boost::_bi::bind_t<void (&)(const boost::system::error_code&), boost::_mfi::dm<void()(const boost::system::error_code&), kad::ContactList>, boost::_bi::list1<boost::_bi::value<kad::ContactList*> > >, Time = boost::posix_time::ptime, TimeTraits = boost::asio::time_traits<boost::posix_time::ptime>, TimerService = boost::asio::deadline_timer_service<boost::posix_time::ptime, boost::asio::time_traits<boost::posix_time::ptime> >]’ 
../kad/ContactList.cpp:96: instantiated from here 
/usr/include/boost/mem_fn.hpp:342: error: invalid use of non-static member function 
make: *** [kad/ContactList.o] Error 1 

Je vous en serais reconnaissant toute aide ou suggestion. merci d'avance

Answer 1

Je soupçonne que le compilateur essaie (et échoue) de vous dire que le problème est avec votre constructeur. Vous n'avez pas inclus le code pour cela, mais je suppose que vous n'initialisez pas le membre deadline_timerdt. Peut-être que vous faites quelque chose comme ceci:

ContactList::ContactList() 
{ 
} 

Le problème est que la classe deadline_timer n'a pas de constructeur par défaut défini - vous devez choisir l'un des defined constructors. Il semble y avoir trois à choisir parmi:

basic_deadline_timer(
    boost::asio::io_service & io_service); 

basic_deadline_timer(
    boost::asio::io_service & io_service, 
    const time_type & expiry_time); 

basic_deadline_timer(
    boost::asio::io_service & io_service, 
    const duration_type & expiry_time); 

Il est évident que les erreurs de modèle sont difficiles à lire et comprennent beaucoup d'informations inutiles - les a été l'analyse syntaxique quelque chose d'une forme d'art. Vous pourriez vouloir regarder dans l'installation stlfilt - c'est un ensemble de manuscrits de perl qui ont la capacité de simplifier les messages d'erreur quelque peu.