Struct CleanupConfig 

pub struct CleanupConfig {
    pub task_retention_duration: Duration,
    pub enable_automatic_cleanup: bool,
    pub max_retained_tasks: usize,
}

Configuration for completed-task retention.

The executor releases the state of finished tasks in whole blocks of 1,024 tasks as it registers new ones, so retained memory follows the spawn rate without a background thread. A block is released once every task in it has finished and either its newest completion is older than task_retention_duration or more than max_retained_tasks finished tasks are retained. One long-running task therefore keeps its own block resident.

A released task still reports as completed to wait_for_task and accepts cancel_task as a no-op; only its status and statistics are gone, so task_status and task_stats return None.

Fields

task_retention_duration: Duration

How long finished-task metadata stays observable.

Default: 5 minutes

enable_automatic_cleanup: bool

Whether the executor releases finished-task metadata at all.

When disabled every task’s metadata is retained for the executor’s lifetime and memory grows with the number of tasks spawned.

Default: true

max_retained_tasks: usize

Most finished tasks retained regardless of age, rounded up to whole blocks of 1,024 tasks.

This is the hard bound on retained memory for a workload that finishes tasks faster than task_retention_duration elapses.

Default: 10,000 tasks

Trait Implementations

impl Clone for CleanupConfig

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CleanupConfig

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

Formats the value using the given formatter.

impl Default for CleanupConfig

fn default() -> Self

Returns the “default value” for a type.