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Hm, in c++ there are a fair amount of battle-tested, permissively-licensed lockfree containers though

I use https://github.com/cameron314/readerwriterqueue and https://github.com/cameron314/concurrentqueue ; they deliver.

Yes, in addition to the atomics and memory ordering primitives added in the C++11 standard [1], I find the Boost lock-free structures quite reasonable [2]. (Yes, I'm aware some have an automatic aversion to Boost. But it is well-designed and I believe is a header-only library.)

[1] https://en.cppreference.com/w/cpp/atomic

[2] https://www.boost.org/doc/libs/1_74_0/doc/html/lockfree.html

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