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CpuSet

Struct CpuSet 

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pub struct CpuSet { /* private fields */ }
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Masque d’affinité CPU — miroir de cpu_set_t (CPU_SETSIZE bits, 128 octets), affinité des workers io-wq (IORING_REGISTER_IOWQ_AFF) et, à terme, sched_setaffinity(2) (cf. family-system).

Construit vide ; les CPU sont ajoutés un à un. Les indices hors borne (≥ CPU_SETSIZE) sont ignorés sans panique (les accesseurs renvoient false) — zéro présomption (Principe 3), jamais d’indexation qui panique.

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impl CpuSet

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pub const fn new() -> Self

Masque vide (aucun CPU sélectionné).

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pub fn set(&mut self, cpu: usize) -> bool

Ajoute cpu au masque. Retourne false (sans rien changer) si cpu est hors borne (≥ CPU_SETSIZE).

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pub fn clear(&mut self, cpu: usize) -> bool

Retire cpu du masque. Retourne false si cpu est hors borne.

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pub fn contains(&self, cpu: usize) -> bool

true si cpu est dans le masque (false si hors borne).

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pub fn count(&self) -> u32

Nombre de CPU sélectionnés (popcount du masque).

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pub fn is_empty(&self) -> bool

true si aucun CPU n’est sélectionné.

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pub fn as_bytes(&self) -> &[u8]

Vue octets du masque (layout cpu_set_t), pour le passage au kernel (IORING_REGISTER_IOWQ_AFF lit nr_args octets de cumpask).

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pub fn as_mut_bytes(&mut self) -> &mut [u8]

Vue octets mutable du masque (layout cpu_set_t), pour remplir le masque depuis une source d’octets (p. ex. le cpu_set_t * reçu par la face libc sched_setaffinity). Symétrique d’as_bytes. Additif ADR-085.

Trait Implementations§

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impl Clone for CpuSet

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fn clone(&self) -> CpuSet

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 CpuSet

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impl Debug for CpuSet

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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 Default for CpuSet

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fn default() -> Self

Returns the “default value” for a type. Read more
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impl Eq for CpuSet

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impl PartialEq for CpuSet

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

Equality operator ==. Read more
1.0.0 (const: unstable) · Source§

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

Inequality operator !=. Read more
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impl StructuralPartialEq for CpuSet

Auto Trait Implementations§

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> 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.