android/vendor/tokio-1.36.0/src/loom/std/unsafe_cell.rs

#[derive(Debug)]
pub(crate) struct UnsafeCell<T>(std::cell::UnsafeCell<T>);

impl<T> UnsafeCell<T> {
    pub(crate) const fn new(data: T) -> UnsafeCell<T> {
        UnsafeCell(std::cell::UnsafeCell::new(data))
    }

    #[inline(always)]
    pub(crate) fn with<R>(&self, f: impl FnOnce(*const T) -> R) -> R {
        f(self.0.get())
    }

    #[inline(always)]
    pub(crate) fn with_mut<R>(&self, f: impl FnOnce(*mut T) -> R) -> R {
        f(self.0.get())
    }
}