pub struct DefaultCallsite {
    interest: AtomicU8,
    registration: AtomicU8,
    meta: &'static Metadata<'static>,
    next: AtomicPtr<Self>,
}
Expand description

A default Callsite implementation.

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§interest: AtomicU8§registration: AtomicU8§meta: &'static Metadata<'static>§next: AtomicPtr<Self>

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impl DefaultCallsite

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const UNREGISTERED: u8 = 0u8

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const REGISTERING: u8 = 1u8

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const REGISTERED: u8 = 2u8

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const INTEREST_NEVER: u8 = 0u8

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const INTEREST_SOMETIMES: u8 = 1u8

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const INTEREST_ALWAYS: u8 = 2u8

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pub const fn new(meta: &'static Metadata<'static>) -> Self

Returns a new DefaultCallsite with the specified Metadata.

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pub fn register(&'static self) -> Interest

Registers this callsite with the global callsite registry.

If the callsite is already registered, this does nothing. When using DefaultCallsite, this method should be preferred over [tracing_core::callsite::register], as it ensures that the callsite is only registered a single time.

Other callsite implementations will generally ensure that callsites are not re-registered through another mechanism.

See the documentation on callsite registration for details on the global callsite registry.

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pub fn interest(&'static self) -> Interest

Returns the callsite’s cached Interest, or registers it for the first time if it has not yet been registered.

Trait Implementations§

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impl Callsite for DefaultCallsite

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fn set_interest(&self, interest: Interest)

Sets the Interest for this callsite. Read more
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fn metadata(&self) -> &Metadata<'static>

Returns the metadata associated with the callsite.
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impl Debug for DefaultCallsite

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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, 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.