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gpderetta
on Nov 25, 2020
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Apple Silicon M1: Black Magic Fuckery
thanks, it makes sense now.
For what I understand, the isa pointer is sorta-kinda similar to a vtable pointer in C++.
saagarjha
on Nov 26, 2020
[–]
Yep. It’s actually a pointer to the class instance for the object, which is a full object that contains more information than a typical vtable might, but it serves as a “type ID” that the runtime can use to dispatch on.
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For what I understand, the isa pointer is sorta-kinda similar to a vtable pointer in C++.