Struct tracing_core::stdlib::task::Context

pub struct Context<'a> {
    waker: &'a Waker,
    local_waker: &'a LocalWaker,
    ext: AssertUnwindSafe<ExtData<'a>>,
    _marker: PhantomData<fn(_: &'a ()) -> &'a ()>,
    _marker2: PhantomData<*mut ()>,
}

The context of an asynchronous task.

Currently, Context only serves to provide access to a &Waker which can be used to wake the current task.

Fields

waker: &'a Waker

local_waker: &'a LocalWaker

ext: AssertUnwindSafe<ExtData<'a>>

_marker: PhantomData<fn(_: &'a ()) -> &'a ()>

_marker2: PhantomData<*mut ()>

Implementations

impl<'a> Context<'a>

pub fn from_waker(waker: &'a Waker) -> Context<'a>

Create a new Context from a &Waker.

pub fn waker(&self) -> &'a Waker

Returns a reference to the Waker for the current task.

pub const fn local_waker(&self) -> &'a LocalWaker

🔬This is a nightly-only experimental API. (local_waker #118959)

Returns a reference to the LocalWaker for the current task.

pub const fn ext(&mut self) -> &mut (dyn Any + 'static)

🔬This is a nightly-only experimental API. (context_ext #123392)

Returns a reference to the extension data for the current task.

Trait Implementations

impl Debug for Context<'_>

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.