Struct Guard 

pub struct Guard { /* private fields */ }

A held lock; dropping it removes the file, if it is still this one’s.

Implementations

impl Guard

pub fn renew(&mut self, now: i64) -> Renewal

Writes the lock anew at now, if it is still this one’s: a holder whose work outlasts one model call (the session-end judge’s batches, hook.rs judge_session) renews it before each call, so it never reads stale while its holder still works. Whole, by a rename: no one reads it half-written. Lost when another holds it now (or it is gone), and nothing is written; Unwritten when it is still this one’s but could not be written (it stays as it was, and may read stale later).

Trait Implementations

impl Debug for Guard

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

Formats the value using the given formatter.

impl Drop for Guard

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.