NoopTracer

datafusion_common_runtime::trace_utils

Struct NoopTracer 

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struct NoopTracer;
Expand description

A no-op tracer that does not modify or instrument any futures or closures. This is used as a fallback if no custom tracer is set.

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impl JoinSetTracer for NoopTracer

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fn trace_future( &self, fut: BoxFuture<'static, Box<dyn Any + Send>>, ) -> BoxFuture<'static, Box<dyn Any + Send>>

Function pointer type for tracing a future. Read more
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fn trace_block( &self, f: Box<dyn FnOnce() -> Box<dyn Any + Send> + Send>, ) -> Box<dyn FnOnce() -> Box<dyn Any + Send> + Send>

Function pointer type for tracing a blocking closure. 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.