Struct RetentionWatch 

pub struct RetentionWatch { /* private fields */ }

Trims when retained memory grows threshold bytes past a baseline. The baseline is the level measured after the last trim and only moves down between trims: glibc’s free-chunk counters do not drop after a trim, so a plain threshold would fire again on every check.

Implementations

impl RetentionWatch

pub fn new(threshold_bytes: u64) -> Self

pub fn check(&mut self, reason: &'static str) -> bool

Measure and trim if retention grew too much. Returns whether it trimmed.

pub fn observe( &mut self, retained: u64, reason: &'static str, after_trim: fn() -> Option<u64>, ) -> bool

Decide on one measurement; after_trim re-measures once trimmed.

pub fn baseline(&self) -> Option<u64>

The level new growth is measured against.

Trait Implementations

impl Debug for RetentionWatch

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

Formats the value using the given formatter.