[Boost-bugs] [Boost C++ Libraries] #6308: Add sp_counted_base_aix.hpp using AIX atomic operations

Subject: [Boost-bugs] [Boost C++ Libraries] #6308: Add sp_counted_base_aix.hpp using AIX atomic operations
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2011-12-20 23:51:28

#6308: Add sp_counted_base_aix.hpp using AIX atomic operations
----------------------------------------+-----------------------------------
 Reporter:  aaron.riekenberg@…          |       Owner:  pdimov      
     Type:  Feature Requests            |      Status:  new         
Milestone:  To Be Determined            |   Component:  smart_ptr   
  Version:  Boost 1.48.0                |    Severity:  Optimization
 Keywords:                              |  
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 Add sp_counted_base_aix.hpp that uses fetch_and_add and compare_and_swap
 atomic operations available on AIX (see
 http://publib.boulder.ibm.com/infocenter/aix/v6r1/index.jsp?topic=%2Fcom.ibm.aix.kerneltechref%2Fdoc%2Fktechrf1%2Ffetch_and_add.htm).

 The average time for each iteration in the attached test.cpp was reduced
 from 23 microseconds to 4.7 microseconds on a machine running AIX 5.3 with
 VisualAge C++ 8.0.

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Ticket URL: <https://svn.boost.org/trac/boost/ticket/6308>
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