Can I `__restrict__ this` somehow?

Question

I\'ve been watching Mike Acton\'s talk on Data-oriented design in C++ in CppCon 2014, and he gives this example:

int Foo::Bar(int count)
{
    int value = 0;
            


        

Answer 1

1. __restrict__ is not standardized in C++, so this question can only be answered on a particular platform. For GCC, you can apply __restrict__ to this in the same way as const:

   void T::fn () __restrict__
   

2. There is no potential aliasing in your example. C++ specifies undefined behavior for data races.

3. A new system for C++ restricted pointers is being developed. It will likely be standardized in C++17. Support for this is one of the stated design goals.