gistfile1.hpp

#include <ctime>
#include <iostream>

using namespace std;

static int i = 0;
struct A {
    virtual void perform() {
        i++;
    }
};

struct B : public A {
    void perform() {
        i += 4;
    }
};

void bench();

int main() {  
    bench()
    bench()
    bench()
    bench()
    bench()
    cout << i << endl;
    return 0;
}

void bench() {
    clock_t cstart = clock();
    A*a = new A();
    A*b = new B();
    for (int i=0;i<400000000;i++) {
        A*x = (i & 1) == 0 ? a : b;
        x->perform();
    }
    delete a;
    delete b;
    clock_t cend = clock();
    double millis = 1000.0 * (cend - cstart) / CLOCKS_PER_SEC;
    cout << millis << endl;
}