[−][src]Struct tokio::signal::windows::CtrlBreak
signal
only.Represents a stream which receives "ctrl-break" notifications sent to the process
via SetConsoleCtrlHandler
.
A notification to this process notifies all streams listening for this event. Moreover, the notifications are coalesced if they aren't processed quickly enough. This means that if two notifications are received back-to-back, then the stream may only receive one item about the two notifications.
Implementations
impl CtrlBreak
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pub async fn recv(&mut self) -> Option<()>
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Receives the next signal notification event.
None
is returned if no more events can be received by this stream.
Examples
use tokio::signal::windows::ctrl_break; #[tokio::main] async fn main() -> Result<(), Box<dyn std::error::Error>> { // An infinite stream of CTRL-BREAK events. let mut stream = ctrl_break()?; // Print whenever a CTRL-BREAK event is received. loop { stream.recv().await; println!("got signal CTRL-BREAK"); } }
pub fn poll_recv(&mut self, cx: &mut Context<'_>) -> Poll<Option<()>>
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Polls to receive the next signal notification event, outside of an
async
context.
None
is returned if no more events can be received by this stream.
Examples
Polling from a manually implemented future
use std::pin::Pin; use std::future::Future; use std::task::{Context, Poll}; use tokio::signal::windows::CtrlBreak; struct MyFuture { ctrl_break: CtrlBreak, } impl Future for MyFuture { type Output = Option<()>; fn poll(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> { println!("polling MyFuture"); self.ctrl_break.poll_recv(cx) } }
Trait Implementations
Auto Trait Implementations
impl !RefUnwindSafe for CtrlBreak
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impl Send for CtrlBreak
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impl Sync for CtrlBreak
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impl Unpin for CtrlBreak
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impl !UnwindSafe for CtrlBreak
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Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
pub fn borrow_mut(&mut self) -> &mut Tⓘ
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impl<T> From<T> for T
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,