jprudent

struct Hook;
struct Timer;

struct ComputerUnit<'a> {
    hooks: Vec<&'a mut Hook>,
    memory: Mmu<'a>
}

impl<'a> ComputerUnit<'a> {
    fn new(hooks: Vec<&'a mut Hook>, timer: &'a Timer) -> ComputerUnit<'a> {

jprudent

struct CpuHook {
    counter: u64
}

impl CpuHook {
    pub fn inspect(&mut self, cpu: &Cpu) {
        // here I don't use the cpu but I could log the cpu register in a mutable file for instance
        self.counter = self.counter.wrapping_add(1);
    }
}

jprudent

struct Element {
    x: u8
}

impl Element {
    pub fn inc(&mut self, container: &Container) {
        self.x = self.x + 1;
    }
}