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pub(crate) mod future {
pub(crate) use crate::task::AtomicWaker;
}
pub(crate) mod sync {
pub(crate) use std::sync::atomic;
pub(crate) use std::sync::Arc;
use std::cell::UnsafeCell;
pub(crate) struct CausalCell<T>(UnsafeCell<T>);
impl<T> CausalCell<T> {
pub(crate) fn new(data: T) -> CausalCell<T> {
CausalCell(UnsafeCell::new(data))
}
pub(crate) fn with<F, R>(&self, f: F) -> R
where
F: FnOnce(*const T) -> R,
{
f(self.0.get())
}
pub(crate) fn with_mut<F, R>(&self, f: F) -> R
where
F: FnOnce(*mut T) -> R,
{
f(self.0.get())
}
}
}
pub(crate) mod thread {
pub(crate) fn yield_now() {
::std::sync::atomic::spin_loop_hint();
}
}
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