[][src]Struct tracing::collect::Interest

pub struct Interest(_);

Indicates a Collect's interest in a particular callsite.

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

Implementations

impl Interest[src]

pub fn never() -> Interest[src]

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

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

pub fn sometimes() -> Interest[src]

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

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

pub fn always() -> Interest[src]

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

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

pub fn is_never(&self) -> bool[src]

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

pub fn is_sometimes(&self) -> bool[src]

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

pub fn is_always(&self) -> bool[src]

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

Trait Implementations

impl Clone for Interest[src]

impl Debug for Interest[src]

Auto Trait Implementations

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 T where
    T: 'static + ?Sized
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impl<T> Borrow<T> for T where
    T: ?Sized
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impl<T> BorrowMut<T> for T where
    T: ?Sized
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impl<T> From<T> for T[src]

impl<T> Instrument for T[src]

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

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.

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.