Re: [boost] [asio] failure in ~wrapped_handler

From: Christopher Kohlhoff (chris_at_[hidden])
Date: 2008-07-01 08:24:38

Dean Michael C. Berris wrote:
> Hi everyone,
> 
> I recently ran into a problem with Boost.Asio while using a slightly
> modified version of the HTTP 2 example server. The debugger trace
> (attached) shows where a segfault had occurred in the code.
> 
> The short of it is that when ~wrapped_handler is called, the call to
> boost::detail::atomic_exchange_and_add fails when
> boost::detail::sp_counted_base::release is invoked. It occurs when a
> handler_wrapper is deleted/destructed (~handler_wrapper is called) in
> the strand_service.
> 
> I'm just wondering what could be causing this -- it's worth noting that
> under not-so-heavy load, the problem does not manifest itself; but soon
> enough when the load on the server goes up (more incoming connections)
> the server crashes consistently.
> 
> Any pointers where I should be looking? I'm using Boost.Trunk revision
> number 43296.

Revision 43296 is quite old. There have been a few fixes since that 
might be related to your problem, but I suspect this might be the one:

   http://svn.boost.org/trac/boost/changeset/43879/trunk/boost/asio

It would be better if you could try to reproduce the problem with the 
latest revision, however.

Cheers,
Chris