Enum SchedulerProfile 

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

Scheduler policy. Linux-specific (see sched(7)).

Variants

Default

Linux SCHED_OTHER (CFS) — the default for all threads.

RealtimeFifo

Linux SCHED_FIFO — strictly priority-based, no quantum. priority is the value of sched_priority (1..=99, higher beats lower; 0 is not allowed for FIFO/RR with non-empty queues, is accepted by the kernel but treated as a SCHED_OTHER fallback).

Privileges: CAP_SYS_NICE from priority > 0 on; depending on RLIMIT_RTPRIO also for priority 0.

Fields

priority: u8

Value of sched_priority (1..=99).

RealtimeRoundRobin

Linux SCHED_RR — like FIFO, but with a round-robin quantum per priority level.

Fields

priority: u8

Value of sched_priority (1..=99).

Deadline

Linux SCHED_DEADLINE (CBS+EDF) — hard guarantees via a (runtime, deadline, period) triple in nanoseconds. See sched_setattr(2) for the spec. Conditions:

• runtime <= deadline <= period
• The kernel computes a bandwidth reservation. EBUSY if the global reservation blows the limit (default 95%).

Privileges: always CAP_SYS_NICE. Forks must not inherit (otherwise EBUSY).

Fields

runtime_ns: u64

Worst-case execution time per period (ns).

deadline_ns: u64

Soft deadline from the start of the period (ns).

period_ns: u64

Repetition period (ns).

Implementations

impl SchedulerProfile

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

Applies the profile to the calling thread.

Errors

• EPERM (PermissionDenied) if the privileges are missing.
• EINVAL (InvalidInput) on inconsistent deadline values.
• Unsupported on non-Linux targets.

Trait Implementations

impl Clone for SchedulerProfile

fn clone(&self) -> SchedulerProfile

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for SchedulerProfile

impl Debug for SchedulerProfile

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

Formats the value using the given formatter.

impl Eq for SchedulerProfile

impl PartialEq for SchedulerProfile

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

Tests for self and other values to be equal, and is used by ==.

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

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

impl StructuralPartialEq for SchedulerProfile