Skip to main content

Signal

Struct Signal 

Source
pub struct Signal(/* private fields */);
Expand description

Numéro de signal Unix/Linux.

Toujours dans [1, 64] par construction : le signal 0 n’existe pas (sentinelle « pas de signal » exprimée par Option<Signal> cf. convention 1 ADR-021), et Linux n’admet aucun signal > 64 (_NSIG = 64). La borne est validée à la construction (Self::try_from_raw) — pas de runtime check ailleurs.

Implementations§

Source§

impl Signal

Source

pub const SIGHUP: Self

SIGHUP — Hangup (1) : la fin d’un terminal de contrôle. Envoyé au shell de login d’air-sshd quand le client ferme le canal interactif (E.3).

Source

pub const SIGILL: Self

SIGILL — Illegal instruction (4).

Référencé par cette PR : FatalSignal::Ill (sous-module synchronous_handler), tests d’install_fatal_handler.

Source

pub const SIGTRAP: Self

SIGTRAP — Trace/breakpoint trap (5).

Source

pub const SIGABRT: Self

SIGABRT — Abort (6).

Source

pub const SIGBUS: Self

SIGBUS — Bus error (7).

Référencé par cette PR : FatalSignal::Bus.

Source

pub const SIGFPE: Self

SIGFPE — Floating-point exception (8).

Référencé par cette PR : FatalSignal::Fpe.

Source

pub const SIGKILL: Self

SIGKILL — Kill (cannot be caught or ignored, 9).

Source

pub const SIGUSR1: Self

SIGUSR1 — User-defined signal 1 (10, x86_64/aarch64).

Référencé par cette PR : signal canonique pour les tests signalfd / block / tgkill / rt_sigqueueinfo.

Source

pub const SIGPIPE: Self

SIGPIPE — Écriture sur un tube ou une socket dont le lecteur est parti (13).

Le PAL de la std linux-air le pose à SIG_IGN au démarrage, comme le fait le PAL unix de l’amont — sans quoi tout binaire Air meurt sur signal 13 là où un programme Rust reçoit Err(EPIPE) et peut le traiter.

Son absence de cette liste était l’anomalie : onze signaux y figuraient, et celui qui décide du sort de toute écriture sur un pair disparu n’y était pas.

Source

pub const SIGSEGV: Self

SIGSEGV — Segmentation fault (11).

Référencé par cette PR : FatalSignal::Segv.

Source

pub const SIGCHLD: Self

SIGCHLD — Child status changed (17, x86_64/aarch64).

Source

pub const SIGSTOP: Self

SIGSTOP — Stop process (cannot be caught or ignored, 19, x86_64/aarch64).

Source

pub const fn try_from_raw(raw: i32) -> Option<Self>

Tente de construire un Signal à partir d’un entier brut.

Borné à [1, NSIG] (= [1, 64] sur Linux). NSIG = 64 est le nombre maximum de signaux Unix POSIX standard + temps-réel supportés par Linux (cf. _NSIG dans asm-generic/signal.h).

Retourne None si raw <= 0 ou raw > 64. Aucune valeur hors de cette plage ne peut désigner un signal Linux valide ; les rejeter à la construction transforme l’invariant en garantie de type (Principe 4 — validation amont), plutôt qu’en EINVAL kernel observé au runtime sur kill/tgkill/etc.

Source

pub const fn as_raw(self) -> i32

Retourne la représentation brute (positive) du numéro de signal.

Trait Implementations§

Source§

impl Clone for Signal

Source§

fn clone(&self) -> Signal

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
Source§

impl Copy for Signal

Source§

impl Debug for Signal

Source§

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

Formats the value using the given formatter. Read more
Source§

impl Eq for Signal

Source§

impl Hash for Signal

Source§

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher. Read more
1.3.0 · Source§

fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
Source§

impl Ord for Signal

Source§

fn cmp(&self, other: &Signal) -> Ordering

This method returns an Ordering between self and other. Read more
1.21.0 (const: unstable) · Source§

fn max(self, other: Self) -> Self
where Self: Sized,

Compares and returns the maximum of two values. Read more
1.21.0 (const: unstable) · Source§

fn min(self, other: Self) -> Self
where Self: Sized,

Compares and returns the minimum of two values. Read more
1.50.0 (const: unstable) · Source§

fn clamp(self, min: Self, max: Self) -> Self
where Self: Sized,

Restrict a value to a certain interval. Read more
Source§

impl PartialEq for Signal

Source§

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

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

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

Inequality operator !=. Read more
Source§

impl PartialOrd for Signal

Source§

fn partial_cmp(&self, other: &Signal) -> Option<Ordering>

This method returns an ordering between self and other values if one exists. Read more
1.0.0 (const: unstable) · Source§

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

Tests less than (for self and other) and is used by the < operator. Read more
1.0.0 (const: unstable) · Source§

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

Tests less than or equal to (for self and other) and is used by the <= operator. Read more
1.0.0 (const: unstable) · Source§

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

Tests greater than (for self and other) and is used by the > operator. Read more
1.0.0 (const: unstable) · Source§

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

Tests greater than or equal to (for self and other) and is used by the >= operator. Read more
Source§

impl StructuralPartialEq for Signal

Auto Trait Implementations§

Blanket Implementations§

Source§

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

Source§

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
Source§

impl<T> Borrow<T> for T
where T: ?Sized,

Source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
Source§

impl<T> BorrowMut<T> for T
where T: ?Sized,

Source§

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
Source§

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

Source§

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
Source§

impl<T> From<T> for T

Source§

fn from(t: T) -> T

Returns the argument unchanged.

Source§

impl<T, U> Into<U> for T
where U: From<T>,

Source§

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

Source§

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

Source§

type Owned = T

The resulting type after obtaining ownership.
Source§

fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
Source§

fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
Source§

impl<T, U> TryFrom<U> for T
where U: Into<T>,

Source§

type Error = Infallible

The type returned in the event of a conversion error.
Source§

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

Performs the conversion.
Source§

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

Source§

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

The type returned in the event of a conversion error.
Source§

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.