actix-service 0.3.3

Actix Service
Documentation 
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//! Custom cell impl
use std::{cell::UnsafeCell, fmt, rc::Rc};

pub(crate) struct Cell<T> {
    inner: Rc<UnsafeCell<T>>,
}

impl<T> Clone for Cell<T> {
    fn clone(&self) -> Self {
        Self {
            inner: self.inner.clone(),
        }
    }
}

impl<T: fmt::Debug> fmt::Debug for Cell<T> {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        self.inner.fmt(f)
    }
}

impl<T> Cell<T> {
    pub(crate) fn new(inner: T) -> Self {
        Self {
            inner: Rc::new(UnsafeCell::new(inner)),
        }
    }

    pub(crate) fn get_mut(&mut self) -> &mut T {
        unsafe { &mut *self.inner.as_ref().get() }
    }
}