Struct RuntimeTraceWriter 

pub struct RuntimeTraceWriter<W: Write> { /* private fields */ }

Streaming JSONL emitter for instrumented CPU or synthetic rollouts.

The writer emits metadata immediately, rejects duplicate event ids before writing an event, and uses the same validation rules as the importer. Tensor callers should populate TensorObservation::static_id with an id copied from the model IR or a tensor query.

Implementations

impl<W: Write> RuntimeTraceWriter<W>

pub fn new(writer: W, run: RunMetadata) -> Result<Self>

Start a JSONL stream by writing its required metadata event.

pub fn tensor(&mut self, observation: TensorObservation) -> Result<()>

Emit one tensor observation. static_id is the static/runtime correlation key.

pub fn operation(&mut self, observation: OperationObservation) -> Result<()>

Emit one operation observation.

pub fn gradient(&mut self, fact: GradientFact) -> Result<()>

Emit one parameter-gradient fact after checking state/norm consistency.

pub fn value(&mut self, observation: ValueObservation) -> Result<()>

Emit one forward value-range observation.

pub fn finish(self) -> Result<W>

Flush the stream and return the underlying writer.