Re: [Boost-bugs] [Boost C++ Libraries] #10616: tagged_ptr assumes zero leading bits

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #10616: tagged_ptr assumes zero leading bits
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2014-10-20 04:33:45

#10616: tagged_ptr assumes zero leading bits
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  Reporter:  nyh@…             |      Owner:  timblechmann
      Type:  Bugs              |     Status:  new
 Milestone:  To Be Determined  |  Component:  lockfree
   Version:  Boost 1.54.0      |   Severity:  Problem
Resolution:                    |   Keywords:
-------------------------------+--------------------------

Comment (by timblechmann):

 as a workaround, you can try to configure the queue to use array indices
 instead of pointers ...

 for OSv one could either provide a separate version of
 tagged_ptr_ptrcompression or to use tagged_ptr instead of
 tagged_ptr_ptrcompression. this will require a cmpxchg16b instruction,
 though.

 i don't have access to OSv, but i'd happily accept a patch!

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/10616#comment:3>
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