Enum CheckpointTick 

pub enum CheckpointTick {
    Skipped,
    Observed(u64),
}

Outcome of a single checkpoint attempt.

Skipped is returned when the writer mutex is already held (the tick is a no-op). Observed carries the WAL page count read during the tick. The distinction matters for threshold-crossing WARN rate-limiting: a skipped tick must leave the above/below state unchanged so that a busy tick cannot spuriously re-arm the rate limit while WAL pressure is still elevated.

Variants

Skipped

The writer mutex was busy; no checkpoint was issued this tick.

Observed(u64)

A checkpoint was issued; the value is the observed WAL page count.

Trait Implementations

impl Clone for CheckpointTick

fn clone(&self) -> CheckpointTick

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for CheckpointTick

impl Debug for CheckpointTick

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

Formats the value using the given formatter.

impl Eq for CheckpointTick

impl PartialEq for CheckpointTick

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for CheckpointTick