On 07/13/2011 11:09 AM, Tim Blechmann wrote:
> in fact, testing is not the best approach for verifying lock-free data
To me, testing on real devices is needed, it's a pragmatic approach. But I agree
it doesn't solve the entire problem.
That said, what about simulation? One could for example implement a minimal
emulator for the abstract CPU and memory model described in
linux/Documentation/memory-barriers.txt, and test lock-free algorithms on this.
I personally think that's a good approach, in the spirit of unit testing. I'm
not talking about creating a full-fleged CPU emulator, just a minimal one, with
a simple custom language suitable for writing test suites.
Not only ringbuffers could be tested this way, but also other algorithms. But
all in all, it could be quite a lot of work I think. Maybe that would be a good
thesis subject ;)
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