Re: [Boost-users] M68K-Coldfire: Boost 1.44 seems to have a problem with low level locking

Subject: Re: [Boost-users] M68K-Coldfire: Boost 1.44 seems to have a problem with low level locking
From: Andreas Wehrmann (a.wehrmann_at_[hidden])
Date: 2010-09-15 07:09:20

  Hello!

That did it indeed!
Adding the define for BOOST_ASIO_DISABLE_FENCED_BLOCK to 
boost/config/user.hpp
seems to have solved the problem, the application now links without 
problems.

I'll let you know when it causes any problems.
Thanks,

Andreas

On 09/15/2010 11:03 AM, Peter Dimov wrote:
> Andreas Wehrmann wrote:
>
>> Thanks for your hints thus far,
>> do you have any idea of why BOOST_SP_USE_PTHREADS doesn't work?
>> I've seen that where we're using boost 1.38 it is being compiled with 
>> that define set in user.hpp
>> but for 1.41 it is not...
>
> Your error isn't caused by shared_ptr, but by ASIO's "fenced block" in 
> boost/asio/detail/fenced_block.hpp and 
> boost/asio/detail/gcc_sync_fenced_block.hpp. I've no idea what this 
> "fenced block" is supposed to do - it seems to insert or try to insert 
> memory barriers - but on M68K, it should be safe to disable it via 
> BOOST_ASIO_DISABLE_FENCED_BLOCK.
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Dipl.-Ing. (FH) Andreas Wehrmann
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