Struct Interest

pub struct Interest(/* private fields */);

Available on crate features dep_tracing and alloc only.

Expand description

Indicates a Subscriber’s interest in a particular callsite.

Subscribers return an Interest from their register_callsite methods in order to determine whether that span should be enabled or disabled.

Implementations§

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impl Interest

pub fn never() -> Interest

Returns an Interest indicating that the subscriber is never interested in being notified about a callsite.

If all active subscribers are never() interested in a callsite, it will be completely disabled unless a new subscriber becomes active.

pub fn sometimes() -> Interest

Returns an Interest indicating the subscriber is sometimes interested in being notified about a callsite.

If all active subscribers are sometimes or never interested in a callsite, the currently active subscriber will be asked to filter that callsite every time it creates a span. This will be the case until a new subscriber expresses that it is always interested in the callsite.

pub fn always() -> Interest

Returns an Interest indicating the subscriber is always interested in being notified about a callsite.

If any subscriber expresses that it is always() interested in a given callsite, then the callsite will always be enabled.

pub fn is_never(&self) -> bool

Returns true if the subscriber is never interested in being notified about this callsite.

pub fn is_sometimes(&self) -> bool

Returns true if the subscriber is sometimes interested in being notified about this callsite.

pub fn is_always(&self) -> bool

Returns true if the subscriber is always interested in being notified about this callsite.

Trait Implementations§

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impl Clone for Interest

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fn clone(&self) -> Interest

Returns a copy of the value. Read more

1.0.0 · Source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more

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impl Debug for Interest

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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Struct InterestCopy item path

Implementations§

impl Interest

pub fn never() -> Interest

pub fn sometimes() -> Interest

pub fn always() -> Interest

pub fn is_never(&self) -> bool

pub fn is_sometimes(&self) -> bool

pub fn is_always(&self) -> bool

Trait Implementations§

impl Clone for Interest

fn clone(&self) -> Interest

fn clone_from(&mut self, source: &Self)

impl Debug for Interest

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

Auto Trait Implementations§

impl Freeze for Interest

impl RefUnwindSafe for Interest

impl Send for Interest

impl Sync for Interest

impl Unpin for Interest

impl UnwindSafe for Interest

Blanket Implementations§

impl<T> Any for Twhere T: 'static + ?Sized,

fn type_id(&self) -> TypeId

impl<T> ArchivePointee for T

type ArchivedMetadata = ()

fn pointer_metadata( _: &<T as ArchivePointee>::ArchivedMetadata, ) -> <T as Pointee>::Metadata

impl<T> Borrow<T> for Twhere T: ?Sized,

fn borrow(&self) -> &T

impl<T> BorrowMut<T> for Twhere T: ?Sized,

fn borrow_mut(&mut self) -> &mut T

impl<T> ByteSized for T

const BYTE_ALIGN: usize = _

const BYTE_SIZE: usize = _

fn byte_align(&self) -> usize ⓘ

fn byte_size(&self) -> usize ⓘ

fn ptr_size_ratio(&self) -> [usize; 2]

impl<T, R> Chain<R> for Twhere T: ?Sized,

fn chain<F>(self, f: F) -> Rwhere F: FnOnce(Self) -> R, Self: Sized,

fn chain_ref<F>(&self, f: F) -> Rwhere F: FnOnce(&Self) -> R,

fn chain_mut<F>(&mut self, f: F) -> Rwhere F: FnOnce(&mut Self) -> R,

impl<T> CloneToUninit for Twhere T: Clone,

unsafe fn clone_to_uninit(&self, dst: *mut u8)

impl<T> ExtAny for Twhere T: Any + ?Sized,

fn type_id() -> TypeId

fn type_of(&self) -> TypeId

fn type_name(&self) -> &'static str ⓘ

fn type_is<T: 'static>(&self) -> bool

fn as_any_ref(&self) -> &dyn Anywhere Self: Sized,

fn as_any_mut(&mut self) -> &mut dyn Anywhere Self: Sized,

fn as_any_box(self: Box<Self>) -> Box<dyn Any>where Self: Sized,

fn downcast_ref<T: 'static>(&self) -> Option<&T> ⓘ

fn downcast_mut<T: 'static>(&mut self) -> Option<&mut T> ⓘ

impl<T> ExtMem for Twhere T: ?Sized,

const NEEDS_DROP: bool = _

fn mem_align_of<T>() -> usize ⓘ

fn mem_align_of_val(&self) -> usize ⓘ

fn mem_size_of<T>() -> usize ⓘ

fn mem_size_of_val(&self) -> usize ⓘ

fn mem_copy(&self) -> Selfwhere Self: Copy,

fn mem_needs_drop(&self) -> bool

fn mem_drop(self)where Self: Sized,

fn mem_forget(self)where Self: Sized,

fn mem_replace(&mut self, other: Self) -> Selfwhere Self: Sized,

fn mem_take(&mut self) -> Selfwhere Self: Default,

fn mem_swap(&mut self, other: &mut Self)where Self: Sized,

unsafe fn mem_zeroed<T>() -> T

unsafe fn mem_transmute_copy<Src, Dst>(src: &Src) -> Dst

fn mem_as_bytes(&self) -> &[u8] ⓘwhere Self: Sync + Unpin,

fn mem_as_bytes_mut(&mut self) -> &mut [u8] ⓘwhere Self: Sync + Unpin,

impl<T> From<T> for T

fn from(t: T) -> T

impl<S> FromSample<S> for S

fn from_sample_(s: S) -> S

impl<T> Hook for T

fn hook_ref<F>(self, f: F) -> Selfwhere F: FnOnce(&Self),

fn hook_mut<F>(self, f: F) -> Selfwhere F: FnOnce(&mut Self),

impl<T> Instrument for T

fn instrument(self, span: Span) -> Instrumented<Self> ⓘ

Struct Interest

impl<T> Any for T
where T: 'static + ?Sized,

impl<T> Borrow<T> for T
where T: ?Sized,

impl<T> BorrowMut<T> for T
where T: ?Sized,

impl<T, R> Chain<R> for T
where T: ?Sized,

fn chain<F>(self, f: F) -> R
where F: FnOnce(Self) -> R, Self: Sized,

fn chain_ref<F>(&self, f: F) -> R
where F: FnOnce(&Self) -> R,

fn chain_mut<F>(&mut self, f: F) -> R
where F: FnOnce(&mut Self) -> R,

impl<T> CloneToUninit for T
where T: Clone,

impl<T> ExtAny for T
where T: Any + ?Sized,

fn as_any_ref(&self) -> &dyn Any
where Self: Sized,

fn as_any_mut(&mut self) -> &mut dyn Any
where Self: Sized,

fn as_any_box(self: Box<Self>) -> Box<dyn Any>
where Self: Sized,

impl<T> ExtMem for T
where T: ?Sized,

fn mem_copy(&self) -> Self
where Self: Copy,

fn mem_drop(self)
where Self: Sized,

fn mem_forget(self)
where Self: Sized,

fn mem_replace(&mut self, other: Self) -> Self
where Self: Sized,

fn mem_take(&mut self) -> Self
where Self: Default,

fn mem_swap(&mut self, other: &mut Self)
where Self: Sized,

fn mem_as_bytes(&self) -> &[u8] ⓘ
where Self: Sync + Unpin,

fn mem_as_bytes_mut(&mut self) -> &mut [u8] ⓘ
where Self: Sync + Unpin,

fn hook_ref<F>(self, f: F) -> Self
where F: FnOnce(&Self),

fn hook_mut<F>(self, f: F) -> Self
where F: FnOnce(&mut Self),

impl<T, U> Into<U> for T
where U: From<T>,

fn into_either_with<F>(self, into_left: F) -> Either<Self, Self> ⓘ
where F: FnOnce(&Self) -> bool,

impl<F, T> IntoSample<T> for F
where T: FromSample<F>,

impl<T, N1, N2> Niching<NichedOption<T, N1>> for N2
where T: SharedNiching<N1, N2>, N1: Niching<T>, N2: Niching<T>,

impl<T> ToOwned for T
where T: Clone,

impl<T, U> ToSample<U> for T
where U: FromSample<T>,

impl<T, U> TryFrom<U> for T
where U: Into<T>,

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self> ⓘ
where S: Into<Dispatch>,

impl<S, T> Duplex<S> for T
where T: FromSample<S> + ToSample<S>,

impl<T> Ungil for T
where T: Send,