[Boost-bugs] [Boost C++ Libraries] #13567: io_context ::run() doesn't return immediately on stopped io_context due to Windows implementation

Subject: [Boost-bugs] [Boost C++ Libraries] #13567: io_context ::run() doesn't return immediately on stopped io_context due to Windows implementation
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2018-05-16 08:27:11

#13567: io_context ::run() doesn't return immediately on stopped io_context due to
Windows implementation
------------------------------------------------+--------------------------
 Reporter:  cvzakharchenko@…                    |      Owner:
                                                |  chris_kohlhoff
     Type:  Bugs                                |     Status:  new
Milestone:  To Be Determined                    |  Component:  asio
  Version:  Boost 1.67.0                        |   Severity:  Problem
 Keywords:  windows, io_context, stop, stopped  |
------------------------------------------------+--------------------------
 This code hangs, when running on Windows:
 {{{
     boost::asio::io_context context;                // 1
     boost::asio::post(context, []() { for (;;); }); // 2
     context.stop();                                 // 3
     context.run();                                  // hangs in a handler,
 posted in 2
 }}}

 [https://www.boost.org/doc/libs/1_67_0/doc/html/boost_asio/reference/io_context/stop.html
 io_context::stop] documentation says:

   Subsequent calls to run(), run_one(), poll() or poll_one() will return
 immediately until restart() is called.

 Which is, judging by example above, isn't true. Same goes for
 [https://www.boost.org/doc/libs/1_67_0/doc/html/boost_asio/reference/io_context/stopped.html
 io_context::stopped]:
   When an io_context object is stopped, calls to run(), run_one(), poll()
 or poll_one() will return immediately without invoking any handlers.
 and code example below:
 {{{
     boost::asio::io_context context;                // 1
     boost::asio::post(context, []() { for (;;); }); // 2
     context.stop();                                 // 3
     if (context.stopped())
     {
         context.run();                              // hangs in a handler,
 posted in 2
     }
 }}}

 When running on Linux, same code fully complies the documentation and
 doesn't invoke any handlers in examples provided.

-- 
Ticket URL: <https://svn.boost.org/trac10/ticket/13567>
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