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This commit is contained in:
John Doty 2022-12-19 08:27:18 -08:00
parent 34d1830413
commit 9c435dc440
7500 changed files with 1665121 additions and 99 deletions
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vendor/mio/src/event/events.rs vendored Normal file
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use crate::event::Event;
use crate::sys;
use std::fmt;
/// A collection of readiness events.
///
/// `Events` is passed as an argument to [`Poll::poll`] and will be used to
/// receive any new readiness events received since the last poll. Usually, a
/// single `Events` instance is created at the same time as a [`Poll`] and
/// reused on each call to [`Poll::poll`].
///
/// See [`Poll`] for more documentation on polling.
///
/// [`Poll::poll`]: ../struct.Poll.html#method.poll
/// [`Poll`]: ../struct.Poll.html
///
/// # Examples
///
#[cfg_attr(feature = "os-poll", doc = "```")]
#[cfg_attr(not(feature = "os-poll"), doc = "```ignore")]
/// # use std::error::Error;
/// # fn main() -> Result<(), Box<dyn Error>> {
/// use mio::{Events, Poll};
/// use std::time::Duration;
///
/// let mut events = Events::with_capacity(1024);
/// let mut poll = Poll::new()?;
/// #
/// # assert!(events.is_empty());
///
/// // Register `event::Source`s with `poll`.
///
/// poll.poll(&mut events, Some(Duration::from_millis(100)))?;
///
/// for event in events.iter() {
/// println!("Got an event for {:?}", event.token());
/// }
/// # Ok(())
/// # }
/// ```
pub struct Events {
inner: sys::Events,
}
/// [`Events`] iterator.
///
/// This struct is created by the [`iter`] method on [`Events`].
///
/// [`Events`]: struct.Events.html
/// [`iter`]: struct.Events.html#method.iter
///
/// # Examples
///
#[cfg_attr(feature = "os-poll", doc = "```")]
#[cfg_attr(not(feature = "os-poll"), doc = "```ignore")]
/// # use std::error::Error;
/// # fn main() -> Result<(), Box<dyn Error>> {
/// use mio::{Events, Poll};
/// use std::time::Duration;
///
/// let mut events = Events::with_capacity(1024);
/// let mut poll = Poll::new()?;
///
/// // Register handles with `poll`.
///
/// poll.poll(&mut events, Some(Duration::from_millis(100)))?;
///
/// for event in events.iter() {
/// println!("Got an event for {:?}", event.token());
/// }
/// # Ok(())
/// # }
/// ```
#[derive(Debug, Clone)]
pub struct Iter<'a> {
inner: &'a Events,
pos: usize,
}
impl Events {
/// Return a new `Events` capable of holding up to `capacity` events.
///
/// # Examples
///
/// ```
/// use mio::Events;
///
/// let events = Events::with_capacity(1024);
/// assert_eq!(1024, events.capacity());
/// ```
pub fn with_capacity(capacity: usize) -> Events {
Events {
inner: sys::Events::with_capacity(capacity),
}
}
/// Returns the number of `Event` values that `self` can hold.
///
/// ```
/// use mio::Events;
///
/// let events = Events::with_capacity(1024);
/// assert_eq!(1024, events.capacity());
/// ```
pub fn capacity(&self) -> usize {
self.inner.capacity()
}
/// Returns `true` if `self` contains no `Event` values.
///
/// # Examples
///
/// ```
/// use mio::Events;
///
/// let events = Events::with_capacity(1024);
/// assert!(events.is_empty());
/// ```
pub fn is_empty(&self) -> bool {
self.inner.is_empty()
}
/// Returns an iterator over the `Event` values.
///
/// # Examples
///
#[cfg_attr(feature = "os-poll", doc = "```")]
#[cfg_attr(not(feature = "os-poll"), doc = "```ignore")]
/// # use std::error::Error;
/// # fn main() -> Result<(), Box<dyn Error>> {
/// use mio::{Events, Poll};
/// use std::time::Duration;
///
/// let mut events = Events::with_capacity(1024);
/// let mut poll = Poll::new()?;
///
/// // Register handles with `poll`.
///
/// poll.poll(&mut events, Some(Duration::from_millis(100)))?;
///
/// for event in events.iter() {
/// println!("Got an event for {:?}", event.token());
/// }
/// # Ok(())
/// # }
/// ```
pub fn iter(&self) -> Iter<'_> {
Iter {
inner: self,
pos: 0,
}
}
/// Clearing all `Event` values from container explicitly.
///
/// # Notes
///
/// Events are cleared before every `poll`, so it is not required to call
/// this manually.
///
/// # Examples
///
#[cfg_attr(feature = "os-poll", doc = "```")]
#[cfg_attr(not(feature = "os-poll"), doc = "```ignore")]
/// # use std::error::Error;
/// # fn main() -> Result<(), Box<dyn Error>> {
/// use mio::{Events, Poll};
/// use std::time::Duration;
///
/// let mut events = Events::with_capacity(1024);
/// let mut poll = Poll::new()?;
///
/// // Register handles with `poll`.
///
/// poll.poll(&mut events, Some(Duration::from_millis(100)))?;
///
/// // Clear all events.
/// events.clear();
/// assert!(events.is_empty());
/// # Ok(())
/// # }
/// ```
pub fn clear(&mut self) {
self.inner.clear();
}
/// Returns the inner `sys::Events`.
pub(crate) fn sys(&mut self) -> &mut sys::Events {
&mut self.inner
}
}
impl<'a> IntoIterator for &'a Events {
type Item = &'a Event;
type IntoIter = Iter<'a>;
fn into_iter(self) -> Self::IntoIter {
self.iter()
}
}
impl<'a> Iterator for Iter<'a> {
type Item = &'a Event;
fn next(&mut self) -> Option<Self::Item> {
let ret = self
.inner
.inner
.get(self.pos)
.map(Event::from_sys_event_ref);
self.pos += 1;
ret
}
fn size_hint(&self) -> (usize, Option<usize>) {
let size = self.inner.inner.len();
(size, Some(size))
}
fn count(self) -> usize {
self.inner.inner.len()
}
}
impl fmt::Debug for Events {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
f.debug_list().entries(self).finish()
}
}