Struct ResourceReservation 

pub struct ResourceReservation { /* private fields */ }

A single ownership reservation released exactly once on Drop or release.

Implementations

impl ResourceReservation

pub fn promote_to_batch(&mut self, scope: ResourceScope) -> Result<()>

Convert a byte-only reservation into the single batch ownership slot for a published result. The caller must first release the source batch slot after the source batch is no longer needed, so a max_in_flight_batches limit of one remains usable for transforms.

pub fn release(&mut self)

Release this reservation now. Repeated calls are no-ops.

pub fn shrink_to(&mut self, bytes: u64)

Retain only bytes of this reservation, returning any excess immediately.

This is used for bounded metadata probing: reserve before an opaque parser allocates, then retain its measured metadata footprint rather than pessimistically pinning the full execution budget for the lifetime of a source.

pub const fn bytes(&self) -> u64

Return the bytes covered by this reservation.

Trait Implementations

impl Debug for ResourceReservation

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

Formats the value using the given formatter.

impl Drop for ResourceReservation

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.