Re: [Boost-bugs] [Boost C++ Libraries] #3848: Boost.Exception and transporting exceptions between threads

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #3848: Boost.Exception and transporting exceptions between threads
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2010-01-20 03:36:59

#3848: Boost.Exception and transporting exceptions between threads
--------------------------------------------------+-------------------------
  Reporter:  Nikki Chumakov <nikkikom@…>          |       Owner:  emildotchevski         
      Type:  Bugs                                 |      Status:  closed                 
 Milestone:                                       |   Component:  exception              
   Version:  Boost 1.40.0                         |    Severity:  Problem                
Resolution:  invalid                              |    Keywords:  exception thread safety
--------------------------------------------------+-------------------------
Changes (by emildotchevski):

  * status:  new => closed
  * resolution:  => invalid

Comment:

 The exception object itself is NOT thread safe.

 Try this instead:

 {{{
 ....
 boost::exception_ptr get_exception () const
 {
   boost::unique_lock<boost::mutex> lck (mux_);
   while (! ready_)
     cond_.wait (lck);
   return exc_;
 }
 ....
 future f;
 boost::thread thr (boost::bind (&producer, boost::ref (f)));
 if( boost::exception_ptr e=f.get_exception() )
   rethrow_exception(e);
 }}}

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/3848#comment:2>
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