pub struct FnInstrumentation { /* private fields */ }
Expand description

This is a structure which contains the state relating to instrumenting a function. The idea is that you would mutate it via its member functions to e.g. record information about a function call. Because it has internal synchronization, this can be done without retaining a mutable reference.

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impl FnInstrumentation

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pub fn new() -> FnInstrumentation

Construct a new instrumentation state, with default-initialized values.

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pub fn record_call(&self)

Record that the function being instrumented was called by incrementing a counter.

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pub fn get_call_count(&self) -> u64

Return the current number of calls recorded.

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fn type_id(&self) -> TypeId

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fn borrow(&self) -> &T

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

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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> Instrument for T

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

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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type Error = Infallible

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

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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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