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Tick

Struct Tick 

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pub struct Tick<W>
where W: TickWidth,
{ /* private fields */ }
Expand description

A tick count of width W: monotonic since scheduler start, wrapping at W::MAX exactly as the C kernel’s xTickCount does.

Stored as a u64 masked to the width, so the same code path serves every width and every arithmetic test can be run at all three on the host.

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impl<W> Tick<W>
where W: TickWidth,

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pub const ZERO: Tick<W>

Tick zero.

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pub const MAX: Tick<W>

The largest count; also portMAX_DELAY, the “forever” timeout.

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pub const fn new(raw: u64) -> Tick<W>

A count, masked to the width (a value above W::MAX wraps).

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pub const fn get(self) -> u64

The count as a number.

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pub const fn bits() -> u32

The width in bits.

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pub const fn wrapping_add(self, n: u64) -> Tick<W>

self + n, wrapping at the width (the tick interrupt’s increment).

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pub const fn wrapping_sub(self, n: u64) -> Tick<W>

self - n, wrapping at the width.

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pub const fn checked_add(self, n: u64) -> Option<Tick<W>>

self + n, or None if the result would wrap. Blocking APIs use this to know whether a wake time lands in the overflow delayed list.

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pub const fn since(self, earlier: Tick<W>) -> u64

Ticks elapsed from earlier to self, wrapping (the C kernel’s xTickCount - xTimeOnEntering idiom).

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pub const fn overflows_by(self, n: u64) -> bool

Whether adding n to self crosses the wrap point (the wake time belongs in the overflow delayed list).

Trait Implementations§

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impl<W> Clone for Tick<W>
where W: Clone + TickWidth,

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fn clone(&self) -> Tick<W>

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<W> Copy for Tick<W>
where W: Copy + TickWidth,

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impl<W> Debug for Tick<W>
where W: TickWidth,

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

Formats the value using the given formatter. Read more
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impl<W> Default for Tick<W>
where W: TickWidth,

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fn default() -> Tick<W>

Returns the “default value” for a type. Read more
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impl<W> Display for Tick<W>
where W: TickWidth,

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

Formats the value using the given formatter. Read more
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impl<W> Eq for Tick<W>
where W: Eq + TickWidth,

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impl<W> Hash for Tick<W>
where W: Hash + TickWidth,

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

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
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impl<W> Ord for Tick<W>
where W: Ord + TickWidth,

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fn cmp(&self, other: &Tick<W>) -> 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
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fn clamp_to<R>(self, range: R) -> Self
where Self: Sized, R: ClampBounds<Self>,

🔬This is a nightly-only experimental API. (clamp_to)
Restrict a value to a certain range. Read more
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impl<W> PartialEq for Tick<W>
where W: PartialEq + TickWidth,

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fn eq(&self, other: &Tick<W>) -> 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<W> PartialOrd for Tick<W>
where W: PartialOrd + TickWidth,

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fn partial_cmp(&self, other: &Tick<W>) -> 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
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impl<W> StructuralPartialEq for Tick<W>
where W: PartialEq + TickWidth,

Auto Trait Implementations§

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impl<W> Freeze for Tick<W>
where PhantomData<W>: Freeze,

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impl<W> RefUnwindSafe for Tick<W>

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impl<W> Send for Tick<W>
where PhantomData<W>: Send,

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impl<W> Sync for Tick<W>
where PhantomData<W>: Sync,

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impl<W> Unpin for Tick<W>
where PhantomData<W>: Unpin,

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impl<W> UnsafeUnpin for Tick<W>

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impl<W> UnwindSafe for Tick<W>

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> ToString for T
where T: Display + ?Sized,

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fn to_string(&self) -> String

Converts the given value to a String. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = !

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, !>

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.