Avoiding Virtual Call in CRTP
summary
Embedded serialization needs extremely low overhead so a virtual call is unacceptable. A CRTP-based base class replaces repeated implementations and an initial design with a virtual method shows a vcall in Visual Studio assembly. Replacing the virtual call by casting this to the derived type inside the base and invoking a static member lets the compiler resolve the call at compile time so the call becomes inlined by MSVC, yielding CRTP without runtime dispatch and meeting the performance constraint.
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chapters (5)
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