Struct OptUs 

pub struct OptUs(/* private fields */);

Optional time field with a sentinel 0 for “absent”.

Phase 110.B keeps a stable #[repr(transparent)] u32 layout so cbindgen emits plain uint32_t for C consumers — Option<NonZeroU32> loses its niche optimization the moment a #[repr(C)] struct embeds it. Rust callers see the ergonomic get-returning-Option<NonZeroU32> getter.

Sentinel 0 is physically meaningful for every time field on SchedContext: 0-period would mean infinite frequency, 0-budget means unbounded, 0-deadline means no deadline.

Implementations

impl OptUs

pub const NONE: Self

pub const fn from_us(us: u32) -> Self

pub const fn from_nz(nz: NonZeroU32) -> Self

pub const fn get(self) -> Option<NonZeroU32>

Returns the inner value or None when the sentinel is set.

pub const fn is_some(self) -> bool

pub const fn raw(self) -> u32

Trait Implementations

impl Clone for OptUs

fn clone(&self) -> OptUs

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for OptUs

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

Formats the value using the given formatter.

impl Default for OptUs

fn default() -> OptUs

Returns the “default value” for a type.

impl PartialEq for OptUs

fn eq(&self, other: &OptUs) -> 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 Copy for OptUs

impl Eq for OptUs

impl StructuralPartialEq for OptUs