Enum LockKind 

pub enum LockKind {
    Writer,
    Reader,
    WriterInProcess,
}

Lock category for Error::Busy. Three variants because the three categories of contention produce different operator guidance: a contended cross-process WRITER_LOCK means another process is writing; a contended WriterInProcess means another thread of the same process is writing; a contended reader lock is unusual (31 slots, shared) and indicates either a saturated 31+-process workload or a stale lock left by a frozen process.

Variants

Writer

Cross-process WRITER_LOCK at byte 96.

Reader

Cross-process READER_LOCK byte (any slot in 97..128).

WriterInProcess

In-process write mutex (a sibling thread is mid-write).

Trait Implementations

impl Clone for LockKind

fn clone(&self) -> LockKind

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for LockKind

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

Formats the value using the given formatter.

impl PartialEq for LockKind

fn eq(&self, other: &LockKind) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for LockKind

impl Eq for LockKind

impl StructuralPartialEq for LockKind