Re: [Boost-bugs] [Boost C++ Libraries] #5351: interrupt a future get boost::unknown_exception

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #5351: interrupt a future get boost::unknown_exception
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2012-01-18 02:09:11

#5351: interrupt a future get boost::unknown_exception
--------------------------------------------+-------------------------------
  Reporter:  qiaozhiqiang@…                 |       Owner:  viboes                                     
      Type:  Patches                        |      Status:  assigned                                   
 Milestone:  Boost 1.49.0                   |   Component:  thread                                     
   Version:  Boost 1.46.0                   |    Severity:  Problem                                    
Resolution:                                 |    Keywords:  thread interrupt  future  unknown_exception
--------------------------------------------+-------------------------------

Comment (by anonymous):

 catch (boost::thread_interrupted& exc)

 if the caller of fi.get() is a boost::thread and is interrupted, get()
 will throw thread_interrupted.
 but the future is interrupted now, not the caller.
 so I recommend get() throw a new class boost::future_interrupted use
 BOOST_THROW_EXCEPTION.


 {{{
 15
 16      int main(int argc, char** argv)
 17      {
 18        boost::packaged_task<int> pt(&foo);
 19        boost::unique_future<int> fi = pt.get_future();
 20        boost::thread task(boost::move(pt)); // launch task on a thread
 21
 22        task.interrupt();
 23
 24        try
 25        {
 26          int v = fi.get();
 27        }
 28        catch (boost::thread_interrupted& exc)
 29        {
 30          std::cout << "OK: " << std::endl;
 31          return 0;
 32        }
 33        catch (boost::exception& exc)
 34        {
 35          std::cout << __LINE__ << " ERROR: " <<
 boost::diagnostic_information(exc) << std::endl;
 36          return 1;
 37        }
 38        catch (...)
 39        {
 40          std::cout << __LINE__ << " ERROR: " << std::endl;
 41          return 2;
 42        }
 43        std::cout << __LINE__ << " ERROR: " << std::endl;
 44        return 3;
 45      }
 }}}

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/5351#comment:7>
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