Re: [Boost-bugs] [Boost C++ Libraries] #10878: boost::thread::attributes -> no non-variadic-support

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #10878: boost::thread::attributes -> no non-variadic-support
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2016-09-02 20:55:32

#10878: boost::thread::attributes -> no non-variadic-support
-------------------------------+-----------------------------------------
  Reporter:  a.carot@…         |      Owner:  viboes
      Type:  Feature Requests  |     Status:  assigned
 Milestone:  To Be Determined  |  Component:  thread
   Version:  Boost 1.57.0      |   Severity:  Problem
Resolution:                    |   Keywords:  thread,attributes,variadics
-------------------------------+-----------------------------------------

Comment (by jazzalex <alexander.carot@…>):

 Sure: If I do this:

 boost::thread::attributes attrs;

 #if defined(BOOST_THREAD_PLATFORM_WIN32)

 bool res;

 res =
 SetThreadPriority(attrs.native_handle(),THREAD_PRIORITY_TIME_CRITICAL);

 #elif defined(BOOST_THREAD_PLATFORM_PTHREAD)

 pthread_attr_setschedpolicy(attrs.native_handle(), SCHED_FIFO);

 #endif

 sendThread = boost::thread(attrs,&sender::sendItThreadFunction,this);

 I get the following compiler error(s):



 In file included from ./include/boost_1_61_0/boost/bind.hpp:22:
 ./include/boost_1_61_0/boost/bind/bind.hpp:319:9: error: type
 'boost::thread_attributes' does not provide a call operator
         unwrapper<F>::unwrap(f, 0)(a[base_type::a1_], a[base_type::a2_]);
         ^~~~~~~~~~~~~~~~~~~~~~~~~~
 ./include/boost_1_61_0/boost/bind/bind.hpp:1222:16: note: in instantiation
 of function template specialization
 'boost::_bi::list2<boost::_bi::value<void
       (sender::*)()>, boost::_bi::value<sender *>
 >::operator()<boost::thread_attributes, boost::_bi::list0>' requested here
         return l_( type<result_type>(), f_, a, 0 );
                ^
 ./include/boost_1_61_0/boost/thread/detail/thread.hpp:116:17: note: in
 instantiation of member function 'boost::_bi::bind_t<void,
 boost::thread_attributes,
       boost::_bi::list2<boost::_bi::value<void (sender::*)()>,
 boost::_bi::value<sender *> > >::operator()' requested here
                 f();
                 ^
 ./include/boost_1_61_0/boost/thread/detail/thread.hpp:96:15: note: in
 instantiation of member function
 'boost::detail::thread_data<boost::_bi::bind_t<void,
       boost::thread_attributes, boost::_bi::list2<boost::_bi::value<void
 (sender::*)()>, boost::_bi::value<sender *> > > >::run' requested here
               thread_data(BOOST_THREAD_RV_REF(F) f_):
               ^
 ./include/boost_1_61_0/boost/thread/pthread/thread_heap_alloc.hpp:24:24:
 note: in instantiation of member function
       'boost::detail::thread_data<boost::_bi::bind_t<void,
 boost::thread_attributes, boost::_bi::list2<boost::_bi::value<void
 (sender::*)()>,
       boost::_bi::value<sender *> > > >::thread_data' requested here
             return new T(static_cast<A1&&>(a1));
                        ^
 ./include/boost_1_61_0/boost/thread/detail/thread.hpp:211:52: note: in
 instantiation of function template specialization
 'boost::detail::heap_new<boost::detail::thread_data<boost::_bi::bind_t<void,
 boost::thread_attributes, boost::_bi::list2<boost::_bi::value<void
       (sender::*)()>, boost::_bi::value<sender *> > > >,
 boost::_bi::bind_t<void, boost::thread_attributes,
 boost::_bi::list2<boost::_bi::value<void
       (sender::*)()>, boost::_bi::value<sender *> > > >' requested here
             return
 detail::thread_data_ptr(detail::heap_new<detail::thread_data<typename
 boost::remove_reference<F>::type> >(
                                                    ^
 ./include/boost_1_61_0/boost/thread/detail/thread.hpp:397:25: note: in
 instantiation of function template specialization
       'boost::thread::make_thread_info<boost::_bi::bind_t<void,
 boost::thread_attributes, boost::_bi::list2<boost::_bi::value<void
 (sender::*)()>,
       boost::_bi::value<sender *> > > >' requested here
 thread_info(make_thread_info(boost::bind(boost::type<void>(),f,a1,a2)))
                         ^
 sender.cpp:95:18: note: in instantiation of function template
 specialization
       'boost::thread::thread<boost::thread_attributes, void (sender::*)(),
 sender *>' requested here
     sendThread = boost::thread(attrs,&sender::sendItThreadFunction,this);


 However, when I use this instead:

 sendThread = boost::thread(attrs,
 boost::bind(&sender::sendItThreadFunction,this));

 it is working perfectly fine.

 Does this help to track down the issue ?

 Thanks in advance and sorry again for the late reply

 Alex

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/10878#comment:3>
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