mirror of
https://github.com/tokio-rs/tokio.git
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96 lines
2.7 KiB
Rust
96 lines
2.7 KiB
Rust
//! Asynchronous signal handling for Tokio
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//!
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//! The primary type exported from this crate, `unix::Signal`, allows
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//! listening for arbitrary signals on Unix platforms, receiving them
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//! in an asynchronous fashion.
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//!
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//! Note that signal handling is in general a very tricky topic and should be
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//! used with great care. This crate attempts to implement 'best practice' for
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//! signal handling, but it should be evaluated for your own applications' needs
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//! to see if it's suitable.
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//!
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//! The are some fundamental limitations of this crate documented on the
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//! `Signal` structure as well.
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//!
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//! # Examples
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//!
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//! Print out all ctrl-C notifications received
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//!
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//! ```rust,no_run
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//! #![feature(async_await)]
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//!
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//! use tokio_net::signal;
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//!
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//! use futures_util::future;
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//! use futures_util::stream::StreamExt;
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//!
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//! #[tokio::main]
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//! async fn main() -> Result<(), Box<dyn std::error::Error>> {
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//! // Create an infinite stream of "Ctrl+C" notifications. Each item received
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//! // on this stream may represent multiple ctrl-c signals.
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//! let ctrl_c = signal::ctrl_c()?;
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//!
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//! // Process each ctrl-c as it comes in
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//! let prog = ctrl_c.for_each(|_| {
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//! println!("ctrl-c received!");
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//! future::ready(())
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//! });
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//!
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//! prog.await;
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//!
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//! Ok(())
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//! }
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//! ```
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//!
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//! Wait for SIGHUP on Unix
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//!
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//! ```rust,no_run
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//! #![feature(async_await)]
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//! # #[cfg(unix)] {
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//!
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//! use tokio_net::signal::{self, unix::{signal, SignalKind}};
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//!
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//! use futures_util::future;
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//! use futures_util::stream::StreamExt;
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//!
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//! #[tokio::main]
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//! async fn main() -> Result<(), Box<dyn std::error::Error>> {
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//! // Create an infinite stream of "Ctrl+C" notifications. Each item received
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//! // on this stream may represent multiple ctrl-c signals.
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//! let ctrl_c = signal::ctrl_c()?;
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//!
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//! // Process each ctrl-c as it comes in
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//! let prog = ctrl_c.for_each(|_| {
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//! println!("ctrl-c received!");
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//! future::ready(())
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//! });
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//!
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//! prog.await;
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//!
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//! // Like the previous example, this is an infinite stream of signals
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//! // being received, and signals may be coalesced while pending.
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//! let stream = signal(SignalKind::hangup())?;
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//!
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//! // Convert out stream into a future and block the program
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//! let (signal, _stream) = stream.into_future().await;
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//! println!("got signal {:?}", signal);
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//! Ok(())
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//! }
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//! # }
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//! ```
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mod ctrl_c;
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mod registry;
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mod os {
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#[cfg(unix)]
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pub(crate) use super::unix::{OsExtraData, OsStorage};
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#[cfg(windows)]
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pub(crate) use super::windows::{OsExtraData, OsStorage};
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}
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pub mod unix;
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pub mod windows;
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pub use self::ctrl_c::{ctrl_c, CtrlC};
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