Struct kernel::scheduler::mlfq::MLFQSched

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pub struct MLFQSched<'a, A: 'static + Alarm<'static>> {
    pub processes: [List<'a, MLFQProcessNode<'a>>; 3],
    /* private fields */
}

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§processes: [List<'a, MLFQProcessNode<'a>>; 3]

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impl<'a, A: 'static + Alarm<'static>> MLFQSched<'a, A>

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pub const PRIORITY_REFRESH_PERIOD_MS: u32 = 5_000u32

How often to restore all processes to max priority

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pub const NUM_QUEUES: usize = 3usize

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pub fn new(alarm: &'static A) -> Self

Trait Implementations§

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impl<'a, A: 'static + Alarm<'static>, C: Chip> Scheduler<C> for MLFQSched<'a, A>

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fn next(&self) -> SchedulingDecision

Decide which process to run next. Read more
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fn result(&self, result: StoppedExecutingReason, execution_time_us: Option<u32>)

Inform the scheduler of why the last process stopped executing, and how long it executed for. Notably, execution_time_us will be None if the the scheduler requested this process be run cooperatively.
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unsafe fn continue_process(&self, _: ProcessId, _: &C) -> bool

Ask the scheduler whether to continue trying to execute a process. Read more
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unsafe fn execute_kernel_work(&self, chip: &C)

Tell the scheduler to execute kernel work such as interrupt bottom halves and dynamic deferred calls. Most schedulers will use this default implementation, but schedulers which at times wish to defer interrupt handling will reimplement it. Read more
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unsafe fn do_kernel_work_now(&self, chip: &C) -> bool

Ask the scheduler whether to take a break from executing userspace processes to handle kernel tasks. Most schedulers will use this default implementation, which always prioritizes kernel work, but schedulers that wish to defer interrupt handling may reimplement it.

Auto Trait Implementations§

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impl<'a, A> !Freeze for MLFQSched<'a, A>

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impl<'a, A> !RefUnwindSafe for MLFQSched<'a, A>

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impl<'a, A> !Send for MLFQSched<'a, A>

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impl<'a, A> !Sync for MLFQSched<'a, A>

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impl<'a, A> Unpin for MLFQSched<'a, A>
where <A as Time>::Ticks: Unpin,

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impl<'a, A> !UnwindSafe for MLFQSched<'a, A>

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> 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> SizedTypeProperties for T

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#[doc(hidden)] const IS_ZST: bool = _

🔬This is a nightly-only experimental API. (sized_type_properties)
true if this type requires no storage. false if its size is greater than zero. 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.