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prune

runner_manager_platform::dependency_cache

Function prune 

Source 
pub fn prune(
    root: &Path,
    max_bytes: Option<u64>,
    holds_runner: &dyn Fn(&Path) -> bool,
) -> Result<CacheUsage, CacheError>
Expand description

Measures root, removes least-recently-used idle namespaces until it fits under max_bytes, and records the result in USAGE_FILE.

Each chosen namespace is re-checked under LockKind::DependencyCache and renamed into .trash before anything is deleted, so a launch that leased it after the measurement keeps it.

ยงErrors

The lock could not be taken or the usage file could not be written. A namespace that cannot be moved or deleted is skipped, not an error.