Struct DsaSelectScratch 

pub struct DsaSelectScratch { /* private fields */ }

Scratch the pipeline writes through, allocated once and reused across steps.

Sized from a worst-case geometry so a growing context never reallocates mid-serve; Self::fits refuses a pass that would outgrow it rather than overrunning.

Implementations

impl DsaSelectScratch

pub fn alloc( gpu: &dyn GpuBackend, cfg: &Glm5NextDsaConfig, geom: &DsaSelectGeometry, ) -> Result<Self>

Allocate for the worst case this layer will ever see.

pub fn tokens(&self) -> DevicePtr

[q_rows, out_width] i32 selection produced by the last pass.

pub fn row(&self, row: usize, cfg: &Glm5NextDsaConfig) -> Self

The same scratch with tokens pointing at row row.

A K-row verify selects one row at a time (q_rows == 1) but attends all K rows in one launch, so each pass has to land in its own slot of the [max_rows, out_width] output instead of all of them overwriting row 0. Everything else in the scratch is a within-pass temporary and is deliberately shared.

pub fn fits( &self, cfg: &Glm5NextDsaConfig, geom: &DsaSelectGeometry, ) -> Result<()>

Whether geom fits what was allocated. Checked on every pass: a context that grew past the reservation must fail loudly, not scribble past a buffer — the A25 recv-buffer class of bug.

pub fn free(self, gpu: &dyn GpuBackend) -> Result<()>

Trait Implementations

impl Clone for DsaSelectScratch

fn clone(&self) -> DsaSelectScratch

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DsaSelectScratch

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

Formats the value using the given formatter.

impl Copy for DsaSelectScratch