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c++vtable

Virtual Table layout in memory?

how are virtual tables stored in memory? their layout?

e.g. 

class A{
    public:
         virtual void doSomeWork();
};

class B : public A{
    public:
         virtual void doSomeWork();
};

How will be the layout of virtual tables of class A and class B in memory?

Solution

  • As others have said, this is compiler dependant, and not something that you ever really need to think about in day-to-day use of C++. However, if you are simply curious about the issue, you should read Stan Lippman's book Inside the C++ Object Model.