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Tweaks to compare-and-exchange functions

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@glessard glessard released this 21 Apr 20:11
6.2.0
79608d7
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Move choice between weak and strong CAS out of the C parameter list in CAtomics

  • In the CAtomics module, all types have direct CompareAndExchangeWeak and CompareAndExchangeStrong functions rather than a single function with a parameter selecting between strong and weak.

  • The old version of CompareAndExchange with a CASType parameter still exists, but forwards to either of the other two, making it objectively worse.

  • SwiftAtomics internally adapts to the above, but is otherwise unchanged.

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