Struct mz_persist_client::fetch::Lease

pub(crate) struct Lease(Arc<()>);

This represents the lease of a seqno. It’s generally paired with some external state, like a hollow part: holding this lease indicates that we may still want to fetch that part, and should hold back GC to keep it around.

Generally the state and lease are bundled together, as in LeasedBatchPart… but sometimes it’s necessary to handle them separately, so this struct is exposed as well. Handle with care.

Tuple Fields

0: Arc<()>

Implementations

impl Lease

pub fn count(&self) -> usize

Returns the number of live copies of this lease, including this one.

Trait Implementations

impl Clone for Lease

fn clone(&self) -> Lease

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Lease

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

Formats the value using the given formatter.

impl Default for Lease

fn default() -> Lease

Returns the “default value” for a type.