C++ interrupt service routine using templates

isr_template.cpp

#include <iostream>

using namespace std;

typedef void (*callback)(void);

struct timer1_tag {};
struct timer2_tag {};

static callback isr_vector[8];

template<typename T>
void timer_isr(void);

template<typename T>
struct timer
{
	const int base;

	static timer<T> *self;

	timer(const int base, const int index):
		base(base)
	{
		self = this;
		isr_vector[index] = timer_isr<T>;
	}

	void isr(void)
	{
		cout << base << endl;
	}
};

template<typename T>
void timer_isr(void)
{
	timer<T>::self->isr();
}

template<typename T>
timer<T> *timer<T>::self;

int main(int argc, char *argv[])
{
	cout << "create" << endl;

	timer<timer1_tag> timer1(5, 0);
	timer<timer2_tag> timer2(12, 1);

	cout << "call" << endl;

	isr_vector[0]();
	isr_vector[1]();

	return 0;
}