c++ pass member function

Question

I'm trying to make a class that can run a function a large number of times and tell me the average amount of time the function takes to execute.

My solution uses

template<class T_ret = void, class ... T_args>
void RunNewTiming(string outputFileName, T_ret(*function)(T_args ...), int iterations = 1, T_args ... otherArgs);

It works for global functions like this

void foo(){
    // code
}

bool bar(int & a, char b){
    // more code
}

---

FunctionTimer functionTimer;

functionTimer.RunNewTiming("TimingForFoo", &foo, 1000);

functionTimer.RunNewTiming<bool, int , char>("TimingForBar", &bar, 1000, 5, 'h');

But if I try to pass in a public function of an object like

class Object{
public:
    void func(){
        // code
    };
}

---

Object obj;

functionTimer("TimingForObjFunc", obj.func, 1000);

I get the error

A pointer to a bound function may only be used to call the function

Anywhere I try to look for this error only gets people accidentally missing a () when trying to call a function, and people pointing out that they accidentally missed a () as a solution, I can't find a solution in this context.

Is it possible to pass a non-static member function like this at all? Or is there some deeper reason why this isn't working

Answer 1

Update:

I actually found a solution to this problem, I needed to pass in the caller type and an instance of this object

I could then use the type to scope-operate to the correct function, T_caller::*function

template<class T_caller, class T_ret = void, class ... T_args >
auto RunNewTiming(string name, T_ret(T_caller::*function)(T_args ...), T_caller*, int iterations = 1, T_args ... otherArgs);

Then call it like

    ft.RunNewTiming<Object>("objTime", &Object::func, &obj, 1000);