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use crate::runtime::{blocking, context, driver, Spawner};
/// Handle to the runtime.
///
/// The handle is internally reference-counted and can be freely cloned. A handle can be
/// obtained using the [`Runtime::handle`] method.
///
/// [`Runtime::handle`]: crate::runtime::Runtime::handle()
#[derive(Debug, Clone)]
pub(crate) struct Handle {
pub(super) spawner: Spawner,
/// Handles to the I/O drivers
pub(super) io_handle: driver::IoHandle,
/// Handles to the signal drivers
pub(super) signal_handle: driver::SignalHandle,
/// Handles to the time drivers
pub(super) time_handle: driver::TimeHandle,
/// Source of `Instant::now()`
pub(super) clock: driver::Clock,
/// Blocking pool spawner
pub(super) blocking_spawner: blocking::Spawner,
}
impl Handle {
/// Enter the runtime context. This allows you to construct types that must
/// have an executor available on creation such as [`Sleep`] or [`TcpStream`].
/// It will also allow you to call methods such as [`tokio::spawn`].
pub(crate) fn enter<F, R>(&self, f: F) -> R
where
F: FnOnce() -> R,
{
context::enter(self.clone(), f)
}
}
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