Struct ParticipationInner

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pub struct ParticipationInner {
    pid: Ref<PId>,
    aid: AId,
    tracker: Weak<MemoryQuotaTracker>,
    cache: ClaimedQty,
}

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Contents of an enabled Participation

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§pid: Ref<PId>

Participant id

§aid: AId

Account id

§tracker: Weak<MemoryQuotaTracker>

The underlying tracker

§cache: ClaimedQty

Quota we have preemptively claimed for use by this Account

Has been added to PRecord.used, but not yet returned by Participation::claim.

This cache field arranges that most of the time we don’t have to hammer a single cache line.

The value here is bounded by a configured limit.

Invariants on memory accounting:

Participation.cache < configured limit
PRecord.used = Participation.cache + Σ Participation::claim - Σ P'n::release except if PRecord has been deleted (ie when we aren’t tracking any more and think the Participant is Collapsing).
Σ PRecord.used = State.total_used

Enforcement of these invariants is partially assured by types in bookkeeping.

Trait Implementations§

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impl Debug for ParticipationInner

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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impl UnwindSafe for ParticipationInner

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> 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 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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