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//! Runtime components
//!
//! The traits and types within this module are used to allow plugging in
//! runtime types. These include:
//!
//! - Executors
//! - Timers
//! - IO transports

pub mod bounds;
mod io;
mod timer;

pub use self::io::{Read, ReadBuf, ReadBufCursor, Write};
pub use self::timer::{Sleep, Timer};

/// An executor of futures.
///
/// This trait allows Hyper to abstract over async runtimes. Implement this trait for your own type.
///
/// # Example
///
/// ```
/// # use hyper::rt::Executor;
/// # use std::future::Future;
/// #[derive(Clone)]
/// struct TokioExecutor;
///
/// impl<F> Executor<F> for TokioExecutor
/// where
///     F: Future + Send + 'static,
///     F::Output: Send + 'static,
/// {
///     fn execute(&self, future: F) {
///         tokio::spawn(future);
///     }
/// }
/// ```
pub trait Executor<Fut> {
    /// Place the future into the executor to be run.
    fn execute(&self, fut: Fut);
}