Re: [Boost-bugs] [Boost C++ Libraries] #4739: A thread safe bug about epoll_reactor

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #4739: A thread safe bug about epoll_reactor
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2010-10-15 02:27:20

#4739: A thread safe bug about epoll_reactor
-------------------------------+--------------------------------------------
  Reporter:  anonymous         |       Owner:  chris_kohlhoff    
      Type:  Bugs              |      Status:  new               
 Milestone:  To Be Determined  |   Component:  asio              
   Version:  Boost 1.45.0      |    Severity:  Problem           
Resolution:                    |    Keywords:  asio epoll_reactor
-------------------------------+--------------------------------------------

Comment (by jinwei <jinwei.jpp@…>):

 There is a bug epoll_reacor the version Release 1.45.0 In the file
 epoll_reactor.hpp, function epoll_reacor::run, line 369.

    void* ptr = events[i].data.ptr;
    ...
    descriptor_state* descriptor_data =
 static_cast<descriptor_state*>(ptr);
    mutex::scoped_lock descriptor_lock(descriptor_data->mutex_);

 And the file epoll_reactor.hpp, function epoll_reacor::close_descriptor,
 line 256.

    registered_descriptors_.erase(descriptor);

 The ptr ( void* ptr = events[i].data.ptr) may been free in the
 epoll_reacor::close_descriptor.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/4739#comment:1>
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