Enum PackLockErrorOrCancelled 

#[non_exhaustive]
pub enum PackLockErrorOrCancelled {
    Cancelled,
    Lock(PackLockError),
}

Outcome of PackLock::acquire_cancellable — either the underlying lock acquire failed, or the supplied cancellation token fired before the guard was returned. Distinct from crate::scheduler::Cancelled: that ZST signals semaphore-permit cancellation; this variant signals pack-lock cancellation. Verb bodies translate either into the same PluginError::Cancelled at the call site (feat-m7-1 Stages 6-7).

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Cancelled

The cancellation token fired before the lock was acquired. The spawned blocking thread (if launched) may still be parked in fd_lock::write() — see PackLock::acquire_cancellable for the OS-thread leak-window contract.

Lock(PackLockError)

The underlying lock acquire failed before cancellation fired.

Trait Implementations

impl Debug for PackLockErrorOrCancelled

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

Formats the value using the given formatter.

impl Display for PackLockErrorOrCancelled

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

Formats the value using the given formatter.

impl Error for PackLockErrorOrCancelled

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl From<PackLockError> for PackLockErrorOrCancelled

fn from(source: PackLockError) -> Self

Converts to this type from the input type.