Struct ProgressLogger 

pub struct ProgressLogger { /* private fields */ }

Logs progress every N records.

Designed for high-throughput loops where millions of items are processed. The counter is checked against a pre-computed milestone to avoid a division on every call; only when the milestone is reached does the logger perform any formatting or I/O.

Implementations

impl ProgressLogger

pub fn new(name: &'static str, unit: &'static str, every: u64) -> Self

Creates a new progress logger.

• name — log target (appears in [target] in log output)
• unit — label for items being counted (e.g. "reads", "records")
• every — emit a progress line every N items

pub fn record(&mut self)

Record one item and log if the interval has been reached.

pub fn record_n(&mut self, n: u64)

Advance the counter by n and emit a progress message if a milestone boundary is crossed. If n spans multiple milestones only one message is emitted.

pub fn finish(&self)

Log final totals.