Struct FreeSpaceSampler 

pub struct FreeSpaceSampler { /* private fields */ }

Background free-space sampler for one determinism run’s build.

Spawned just before a run’s build subprocess starts and stopped when it returns. While alive, a thread polls available_bytes every interval and records the MINIMUM free space it observes into a shared atomic. The minimum, subtracted from the free space measured before the run, is the run’s measured PEAK consumption — the mid-dmg high-water mark a between-runs net delta cannot see.

If the probe is unavailable (available_bytes returns None), the sampler records nothing and stop yields None; the guard then has no peak for that run and falls back to the floor, never a manufactured value.

Implementations

impl FreeSpaceSampler

pub fn start(vol: &Path, interval: Duration) -> Self

Start sampling free space on the volume backing vol, polling every interval.

pub fn stop(self) -> Option<u64>

Stop sampling, join the thread, and return the minimum free space observed (or None if the probe never succeeded).

Trait Implementations

impl Drop for FreeSpaceSampler

fn drop(&mut self)

Executes the destructor for this type.

fn pin_drop(self: Pin<&mut Self>)

🔬This is a nightly-only experimental API. (pin_ergonomics)

Execute the destructor for this type, but different to Drop::drop, it requires self to be pinned.