What's the best way to get atomic/CAS instructions in C/C++, while keeping your code as portable as possible?
Unfortunately, the best looking solution so far looks like depending on GCC's intrinsics, (since it's so widespread), but it doesn't sound right. There's also a project from HP, http://www.hpl.hp.com/research/linux/atomic_ops/, but it seems too heavyweight. I can use C++11, but (1) not good for C (2) still not as widespread as C++ is. A way which is also compatible with windows, is a big plus. PS, The natural place for this looks like the pthread standard. Probably this sort of thing weren't that popular back then when the standard was written.
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