cargo::util::counter

Struct MetricsCounter

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pub struct MetricsCounter<const N: usize> {
    slots: [(usize, Instant); N],
    index: usize,
}
Expand description

A metrics counter storing only latest N records.

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§slots: [(usize, Instant); N]

Slots to store metrics.

§index: usize

The slot of the oldest record. Also the next slot to store the new record.

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impl<const N: usize> MetricsCounter<N>

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pub fn new(init: usize, init_at: Instant) -> Self

Creates a new counter with an initial value.

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pub fn add(&mut self, data: usize, added_at: Instant)

Adds record to the counter.

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pub fn rate(&self) -> f32

Calculates per-second average rate of all slots.

Auto Trait Implementations§

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impl<const N: usize> Freeze for MetricsCounter<N>

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impl<const N: usize> RefUnwindSafe for MetricsCounter<N>

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impl<const N: usize> Send for MetricsCounter<N>

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impl<const N: usize> Sync for MetricsCounter<N>

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impl<const N: usize> Unpin for MetricsCounter<N>

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impl<const N: usize> UnwindSafe for MetricsCounter<N>

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

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const ALIGN: usize

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type Init = T

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Layout§

Note: Unable to compute type layout, possibly due to this type having generic parameters. Layout can only be computed for concrete, fully-instantiated types.