[Boost-bugs] [Boost C++ Libraries] #9193: Add DCAS support for Windows 32-bit

Subject: [Boost-bugs] [Boost C++ Libraries] #9193: Add DCAS support for Windows 32-bit
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2013-10-03 01:51:29

#9193: Add DCAS support for Windows 32-bit
--------------------------------------+--------------------------
 Reporter:  Gavin Lambert <gavinl@…>  |      Owner:  timblechmann
     Type:  Patches                   |     Status:  new
Milestone:  To Be Determined          |  Component:  atomic
  Version:  Boost 1.54.0              |   Severity:  Problem
 Keywords:  windows x86               |
--------------------------------------+--------------------------
 Currently Boost.Atomic does not support 64-bit atomics as lock-free when
 compiled for 32-bit Windows.

 The attached patch adds this ability by using
 _InterlockedCompareExchange64 (which is the only 64-bit intrinsic
 available for x86) to synthesise the other operations, albeit with lesser
 performance than if a "real" atomic were available.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/9193>
Boost C++ Libraries <http://www.boost.org/>
Boost provides free peer-reviewed portable C++ source libraries.