Download objC4 source code:opensource.apple.com/tarballs/
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Open the project and search for:
struct objc_class, find runtime.h:Can be found: there are
isaA pointer,superclassA pointer,ivarMember variable,method_listList of methods,cacheCache,protocol_listProtocol list.It’s worth noting, however, that this structure has been abandoned since OBJC2: OBJC2_UNAVAILABLE.
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So we keep looking for the latest structure:
The objc_object object contains a pointer to isa:
The final analysis results are as follows:
In fact, there is no essential difference between the new structure and the old structure, all the main characteristics of the information, and some more member variables.
Can be found: there are
The objc_object object contains a pointer to isa:
The final analysis results are as follows:
In fact, there is no essential difference between the new structure and the old structure, all the main characteristics of the information, and some more member variables.