Re: [Boost-bugs] [Boost C++ Libraries] #5021: io_service destructor hangs on Mac OS X

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #5021: io_service destructor hangs on Mac OS X
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2011-02-17 07:16:54

#5021: io_service destructor hangs on Mac OS X
------------------------------------------------+---------------------------
  Reporter:  Remko Tronçon <remko@…>            |       Owner:  chris_kohlhoff
      Type:  Bugs                               |      Status:  new           
 Milestone:  To Be Determined                   |   Component:  asio          
   Version:  Boost 1.45.0                       |    Severity:  Problem       
Resolution:                                     |    Keywords:                
------------------------------------------------+---------------------------

Comment (by arvid@…):

 I have a similar issue in libtorrent on Mac OS X 10.6.5, built as 64 bit.
 I'm not sure about what might have made this start to happen, but it
 appears to have started around the time when I merged uTP support into
 trunk, which essentially mean a lot more traffic (and events) over a
 single udp socket. It seems to somehow be related to busyness, as it seems
 to be more likely to hang when it's been running for a while (an hour or
 so). It hangs here (I'm on boost 1.44):
 {{{
 Call graph:
           2674 libtorrent::session::~session()
             2674
 boost::shared_ptr<libtorrent::aux::session_impl>::~shared_ptr()
               2674 boost::detail::shared_count::~shared_count()
                 2674 boost::detail::sp_counted_base::release()
                   2674
 boost::detail::sp_counted_impl_p<libtorrent::aux::session_impl>::dispose()
                     2674 void
 boost::checked_delete<libtorrent::aux::session_impl>(libtorrent::aux::session_impl*)
                       2674 libtorrent::aux::session_impl::~session_impl()
                         2674 boost::asio::io_service::~io_service()
                           2674
 boost::asio::detail::service_registry::~service_registry()
                             2674
 boost::asio::detail::service_registry::destroy(boost::asio::io_service::service*)
                               2674
 boost::asio::detail::kqueue_reactor::~kqueue_reactor()
                                 2674
 boost::asio::detail::pipe_select_interrupter::~pipe_select_interrupter()
                                   2674 close
 }}}
 This is the last thread alive at this point, so I don't think it's related
 to multithreading.

 It definitely seems like an OS bug to me. close() isn't ever supposed to
 hang indefinitely, right?

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/5021#comment:17>
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