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ScanOnceHandle

epics_libcom_rs::runtime::background::scan_once

Struct ScanOnceHandle 

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

Cheap, clonable submission side of a ScanOnceQueue — the seam route the FLNK/scanOnce chain hands records into.

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impl ScanOnceHandle

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pub fn scan_once(&self, cb: OnceCallback) -> Result<(), ScanOnceOverflow>

Enqueue cb for one-shot processing and return immediately. Err on a full ring (the request is dropped, as in C). Port of scanOnce (dbScan.c:664).

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pub fn overflow_count(&self) -> u64

Lifetime overflow count — C onceQOverruns (dbScan.c:68).

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impl Clone for ScanOnceHandle

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fn clone(&self) -> ScanOnceHandle

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more

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impl<T> Any for T
where T: 'static + ?Sized,

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fn borrow(&self) -> &T

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impl<T> BorrowMut<T> for T
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fn borrow_mut(&mut self) -> &mut T

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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. 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>

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Calls U::from(self).

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
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type Error = Infallible

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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

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

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