Dear Boost Devs, Last night I may have implemented some Boost macro based support for simple memory transactions. Basically one does this: STLLockable lockable; ... BOOST_BEGIN_MEMORY_TRANSACTION(lockable) { // Transaction code } BOOST_END_MEMORY_TRANSACTION(lockable) This can turn into __transaction_relaxed, or Intel TSX falling back onto a spin lock. It's very simple, but it ought to work and with very significant performance improvements on TSX capable hardware. The problem is that I don't have access to an Intel Haswell CPU to test the code upon. I think its design is correct through introspection, but if a kind Boost dev could lend me access to their Haswell machine via SSH - or even just offer to debug some binaries for me, I would be very grateful. Thanks, Niall -- Currently unemployed and looking for work. Work Portfolio: http://careers.stackoverflow.com/nialldouglas/