Re: [Boost-bugs] [Boost C++ Libraries] #3254: Cannot cancel async_write to a serial port

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #3254: Cannot cancel async_write to a serial port
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2009-07-09 12:39:03

#3254: Cannot cancel async_write to a serial port
------------------------------------------+---------------------------------
 Reporter:  kevin.arunski@…               |       Owner:  chris_kohlhoff
     Type:  Bugs                          |      Status:  new           
Milestone:  Boost 1.40.0                  |   Component:  asio          
  Version:  Boost 1.39.0                  |    Severity:  Problem       
 Keywords:                                |  
------------------------------------------+---------------------------------

Comment(by kevin.arunski@…):

 I think I've traced the problem to the speculative write code path in the
 reactor service.  The write is sent to the file descriptor ahead of
 queueing a work operation. So there is no way for the cancel operation to
 find the pending write operation.  So I would think the speculative write
 path would need to at least provide some mechanism for the cancel
 operation to find the write operation and deliver the error code to the
 handler.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/3254#comment:1>
Boost C++ Libraries <http://www.boost.org/>
Boost provides free peer-reviewed portable C++ source libraries.