High-level Compare And Swap (CAS) functions?

Question

I\'d like to document what high-level (i.e. C++ not inline assembler ) functions or macros are available for Compare And Swap (CAS) atomic primitives...

E.g., WIN32

Answer 1

I'll let others list the various platform-specific APIs, but for future reference in C++09 you'll get the

atomic_compare_exchange() 

operation in the new "Atomic operations library".