Enum SampleStage 

pub enum SampleStage {
    AtBoundary,
    InSample,
}

Whether the sample that produced a proposal had closed by the time the proposal was made — declared by the proposer, because only the turn knows. The actor never stores it as state and never routes on it; it exists so the held-steer release can check the argument it rests on instead of resting on a comment (commit-protocol.md §Read invariant, and the 72a6f1b held-steer rule).

The argument, stated: a steer held while a turn is live may land the moment one of that turn’s commits settles, because a turn commits nothing between granting itself a snapshot and the Completed group that closes the sample — so every ack the actor handles is genuinely between samples. That is true of every proposal site today and it is exactly what SampleStage::InSample exists to catch when it stops being true.

Variants

AtBoundary

The sample that produced this commit had already closed (or none was running). A held steer may land behind it: the model’s reply is already durable, so nothing can precede an assistant item that could not have seen it.

InSample

The commit lands while its own sample is still streaming. No such site exists today; §Commit granularity’s intra-sample BlockEnd pipelining would create the first, and on that day a steer released behind one would land ahead of the assistant item the model is still producing — the exact inversion 72a6f1b fixed. Declaring this is what makes that a loud failure rather than a silent regression.

Trait Implementations

impl Clone for SampleStage

fn clone(&self) -> SampleStage

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for SampleStage

impl Debug for SampleStage

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

Formats the value using the given formatter.

impl Eq for SampleStage

impl PartialEq for SampleStage

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for SampleStage