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use crate::time::driver::Entry;
use crate::time::{Duration, Error, Instant};
use std::sync::Arc;
use std::task::{self, Poll};
/// Registration with a timer.
///
/// The association between a `Delay` instance and a timer is done lazily in
/// `poll`
#[derive(Debug)]
pub(crate) struct Registration {
entry: Arc<Entry>,
}
impl Registration {
pub(crate) fn new(deadline: Instant, duration: Duration) -> Registration {
fn is_send<T: Send + Sync>() {}
is_send::<Registration>();
Registration {
entry: Arc::new(Entry::new(deadline, duration)),
}
}
pub(crate) fn deadline(&self) -> Instant {
self.entry.time_ref().deadline
}
pub(crate) fn register(&mut self) {
if !self.entry.is_registered() {
Entry::register(&mut self.entry)
}
}
pub(crate) fn reset(&mut self, deadline: Instant) {
unsafe {
self.entry.time_mut().deadline = deadline;
}
Entry::reset(&mut self.entry);
}
pub(crate) fn is_elapsed(&self) -> bool {
self.entry.is_elapsed()
}
pub(crate) fn poll_elapsed(&self, cx: &mut task::Context<'_>) -> Poll<Result<(), Error>> {
self.entry.poll_elapsed(cx)
}
}
impl Drop for Registration {
fn drop(&mut self) {
Entry::cancel(&self.entry);
}
}
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