Skip to main content

SchedulerProfile

Enum SchedulerProfile 

Source
pub enum SchedulerProfile {
    Default,
    RealtimeFifo {
        priority: u8,
    },
    RealtimeRoundRobin {
        priority: u8,
    },
    Deadline {
        runtime_ns: u64,
        deadline_ns: u64,
        period_ns: u64,
    },
}
Expand description

Scheduler-Policy. Linux-spezifisch (siehe sched(7)).

Variants§

§

Default

Linux SCHED_OTHER (CFS) — der Default fuer alle Threads.

§

RealtimeFifo

Linux SCHED_FIFO — strikt prioritaets-basiert, kein Quantum. priority ist der Wert von sched_priority (1..=99, hoeher schlaegt niedriger; 0 ist nicht erlaubt fuer FIFO/RR mit nicht-leeren Queues, wird vom Kernel akzeptiert aber als SCHED_OTHER-Fallback behandelt).

Privilegien: CAP_SYS_NICE ab Priority > 0; je nach RLIMIT_RTPRIO auch fuer Priority 0.

Fields

§priority: u8

Wert von sched_priority (1..=99).

§

RealtimeRoundRobin

Linux SCHED_RR — wie FIFO, aber mit Round-Robin-Quantum pro Priority-Level.

Fields

§priority: u8

Wert von sched_priority (1..=99).

§

Deadline

Linux SCHED_DEADLINE (CBS+EDF) — harte Garantien per (runtime, deadline, period)-Triple in Nanosekunden. Spec siehe sched_setattr(2). Bedingungen:

  • runtime <= deadline <= period
  • Kernel berechnet eine Bandbreitenreservierung. EBUSY wenn die globale Reservierung das Limit (default 95%) sprengt.

Privilegien: immer CAP_SYS_NICE. Forks duerfen nicht vererben (sonst EBUSY).

Fields

§runtime_ns: u64

Worst-Case-Execution-Time pro Periode (ns).

§deadline_ns: u64

Soft-Deadline ab Periodenstart (ns).

§period_ns: u64

Wiederholungsperiode (ns).

Implementations§

Source§

impl SchedulerProfile

Source

pub fn apply_to_current_thread(&self) -> Result<()>

Wendet das Profil auf den aufrufenden Thread an.

§Errors
  • EPERM (PermissionDenied) wenn die Privilegien fehlen.
  • EINVAL (InvalidInput) bei inkonsistenten Deadline-Werten.
  • Unsupported auf Nicht-Linux-Targets.

Trait Implementations§

Source§

impl Clone for SchedulerProfile

Source§

fn clone(&self) -> SchedulerProfile

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 Debug for SchedulerProfile

Source§

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

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

impl PartialEq for SchedulerProfile

Source§

fn eq(&self, other: &SchedulerProfile) -> 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.
Source§

impl Copy for SchedulerProfile

Source§

impl Eq for SchedulerProfile

Source§

impl StructuralPartialEq for SchedulerProfile

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.