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ProcProbe

Struct ProcProbe 

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pub struct ProcProbe<S, I> { /* private fields */ }
Expand description

A per-request memo over pid_status and process_started_at.

A listing of hundreds of runs asks about the same few pids over and over, and every ask walks the platform’s process table. Asking once per pid is enough within one request; the probe is meant to be dropped with it, never kept, so a stale answer cannot outlive the moment it was read.

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impl ProcProbe<fn(u32) -> Option<bool>, fn(u32) -> Option<String>>

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pub fn real() -> Self

A probe backed by the real platform queries.

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impl<S, I> ProcProbe<S, I>
where S: FnMut(u32) -> Option<bool>, I: FnMut(u32) -> Option<String>,

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pub fn new(status: S, identity: I) -> Self

A probe over caller-supplied queries.

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pub fn status(&mut self, pid: u32) -> Option<bool>

pid_status, asked at most once per pid.

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pub fn started_at(&mut self, pid: u32) -> Option<String>

process_started_at, asked at most once per pid.

Auto Trait Implementations§

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impl<S, I> Freeze for ProcProbe<S, I>
where S: Freeze, I: Freeze,

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impl<S, I> RefUnwindSafe for ProcProbe<S, I>

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impl<S, I> Send for ProcProbe<S, I>
where S: Send, I: Send,

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impl<S, I> Sync for ProcProbe<S, I>
where S: Sync, I: Sync,

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impl<S, I> Unpin for ProcProbe<S, I>
where S: Unpin, I: Unpin,

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impl<S, I> UnsafeUnpin for ProcProbe<S, I>
where S: UnsafeUnpin, I: UnsafeUnpin,

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impl<S, I> UnwindSafe for ProcProbe<S, I>
where S: UnwindSafe, I: UnwindSafe,

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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> 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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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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Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self> ⓘ
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<T> PolicyExt for T
where T: ?Sized,

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fn and<P, B, E>(self, other: P) -> And<T, P>
where T: Sized + Policy<B, E>, P: Policy<B, E>,

Create a new Policy that returns Action::Follow only if self and other return Action::Follow. Read more
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fn or<P, B, E>(self, other: P) -> Or<T, P>
where T: Sized + Policy<B, E>, P: Policy<B, E>,

Create a new Policy that returns Action::Follow if either self or other returns Action::Follow. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = !

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, !>

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.
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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self> ⓘ
where S: Into<Dispatch>,

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fn with_current_subscriber(self) -> WithDispatch<Self> ⓘ

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