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PriorityCaps

Struct PriorityCaps 

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pub struct PriorityCaps {
    pub effective_rank: [u8; 7],
}
Expand description

What each ThreadPriority level will effectively deliver, as opaque ranks. Returned by priority_capabilities.

effective_rank[level as usize] grows with effective strength; the absolute numbers carry no meaning beyond ordering. Two levels with equal rank currently resolve to the same scheduler behavior.

The snapshot is point-in-time: it reflects this process’s rlimits and the reachability of the system’s priority broker (rtkit) at the moment of the call. rtkit in particular can silently withdraw cooperation later (its watchdog demotes a process that starves the canary), so treat the result as a planning hint, not a contract.

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§effective_rank: [u8; 7]

Effective strength rank per level, indexed by ThreadPriority as usize (Background = 0 … TimeCritical = 6).

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impl PriorityCaps

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pub fn rank(&self, priority: ThreadPriority) -> u8

The effective strength rank of priority (higher = stronger).

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pub fn distinct(&self, a: ThreadPriority, b: ThreadPriority) -> bool

true when a and b currently resolve to different scheduler behavior. distinct(Highest, Normal) == false is the classic unprivileged-Linux-without-rtkit signal: your render thread will NOT outrank your workers, plan accordingly.

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pub fn distinct_levels(&self) -> u8

Number of effectively distinct levels (7 = the full ladder works).

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impl Clone for PriorityCaps

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fn clone(&self) -> PriorityCaps

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 Copy for PriorityCaps

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impl Debug for PriorityCaps

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

Formats the value using the given formatter. Read more
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impl Eq for PriorityCaps

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impl PartialEq for PriorityCaps

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fn eq(&self, other: &PriorityCaps) -> bool

Tests for self and other values to be equal, and is used by ==.
1.0.0 (const: unstable) · Source§

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl StructuralPartialEq for PriorityCaps

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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> 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, 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> ToOwned for T
where T: Clone,

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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
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.