Question

I need to pass an array as a template type. How can achieve it. For example, I want something like this.

Fifo<array, Q_SIZE> f; // This is a queue of arrays (to avoid false sharing)

What should I put in place of array? Assume I need an array of int. Also note that I don’t want std::vector or a pointer to an array. I want the whole basic array, something equivalent of say int array[32].

Answer 1

Try this:

Fifo<int[32], Q_SIZE> f; 

Like this:

#include <iostream>
template <class T, int N>
struct Fifo {
  T t;
};

int main () {
 const int Q_SIZE  = 32;
 Fifo<int[32],Q_SIZE> f;
 std::cout << sizeof f << "\n";
}