per-thread-object 0.6.1

Efficient per-object thread-local storage implementation
Documentation 
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#[cfg(not(feature = "shuttle"))]
pub use std::sync;

#[cfg(feature = "shuttle")]
pub use shuttle::sync;

pub mod cell {
    pub struct UnsafeCell<T>(std::cell::UnsafeCell<T>);

    impl<T> UnsafeCell<T> {
        #[inline]
        pub fn new(t: T) -> UnsafeCell<T> {
            UnsafeCell(std::cell::UnsafeCell::new(t))
        }

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

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