Struct tracing_core::metadata::Kind

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pub struct Kind(u8);
Expand description

Indicates whether the callsite is a span or event.

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§0: u8

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impl Kind

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const EVENT_BIT: u8 = 1u8

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const SPAN_BIT: u8 = 2u8

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const HINT_BIT: u8 = 4u8

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pub const EVENT: Kind = _

Event callsite

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pub const SPAN: Kind = _

Span callsite

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pub const HINT: Kind = _

enabled! callsite. Subscribers can assume this Kind means they will never recieve a full event with this Metadata.

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pub fn is_span(&self) -> bool

Return true if the callsite kind is Span

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pub fn is_event(&self) -> bool

Return true if the callsite kind is Event

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pub fn is_hint(&self) -> bool

Return true if the callsite kind is Hint

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pub const fn hint(self) -> Self

Sets that this Kind is a hint.

This can be called on SPAN and EVENT kinds to construct a hint callsite that also counts as a span or event.

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impl Clone for Kind

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fn clone(&self) -> Kind

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for Kind

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

Formats the value using the given formatter. Read more
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impl PartialEq for Kind

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fn eq(&self, other: &Kind) -> bool

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl Eq for Kind

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impl StructuralPartialEq for Kind

Auto Trait Implementations§

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impl Freeze for Kind

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impl RefUnwindSafe for Kind

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impl Send for Kind

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impl Sync for Kind

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impl Unpin for Kind

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impl UnwindSafe for Kind

Blanket Implementations§

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

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.