🛈 Note: This is pre-release documentation for the upcoming tracing 0.2.0 ecosystem.

For the release documentation, please see docs.rs, instead.

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pub struct Interest(_);
Expand description

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

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.

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.

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.

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

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

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

Trait Implementations

Returns a copy of the value. Read more

Performs copy-assignment from source. Read more

Formats the value using the given formatter. Read more

Auto Trait Implementations

Blanket Implementations

Gets the TypeId of self. Read more

Immutably borrows from an owned value. Read more

Mutably borrows from an owned value. Read more

Returns the argument unchanged.

Calls U::from(self).

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

The resulting type after obtaining ownership.

Creates owned data from borrowed data, usually by cloning. Read more

🔬 This is a nightly-only experimental API. (toowned_clone_into #41263)

Uses borrowed data to replace owned data, usually by cloning. Read more

The type returned in the event of a conversion error.

Performs the conversion.

The type returned in the event of a conversion error.

Performs the conversion.