Struct AudioProvenance 

pub struct AudioProvenance {
    pub reg_attrib: RegisterAttribution,
    pub mix_trace: MixTrace,
    pub attrib_pc: u16,
    pub attrib_cycle: u64,
}

Everything audio provenance owns, behind ONE pointer.

Consolidated after measurement, not for tidiness. The first shape put four fields directly on Apu — two Option<Box<..>> plus the u16/u64 attribution context. That grew the struct on the hot path and the apu_throughput bench read +9% on two of three workloads with the arm OFF, which is the configuration the shipped frontend runs. One Option<Box> costs eight bytes and one null test when disarmed, and everything else moves behind the allocation where only an armed session pays for it.

Fields

reg_attrib: RegisterAttribution

Last write to each of $4000-$4017, with its cause.

mix_trace: MixTrace

This frame’s per-CPU-cycle mix records.

attrib_pc: u16

PC of the instruction currently executing, pushed down once per instruction by the core so write_register can attribute a write.

attrib_cycle: u64

CPU-cycle counterpart of Self::attrib_pc.

Implementations

impl AudioProvenance

pub fn new() -> Self

A freshly-armed store.

Trait Implementations

impl Clone for AudioProvenance

fn clone(&self) -> AudioProvenance

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for AudioProvenance

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

Formats the value using the given formatter.

impl Default for AudioProvenance

fn default() -> Self

Returns the “default value” for a type.