Struct AdaptiveScheduler 

pub struct AdaptiveScheduler { /* private fields */ }

Adaptive GC scheduler.

Tracks allocation rates and collection history to decide when and what type of collection to perform. The scheduler is updated after each allocation (via record_allocation) and after each collection (via record_young_gc / record_old_gc).

Implementations

impl AdaptiveScheduler

pub fn new() -> Self

Create a new scheduler with default thresholds.

pub fn with_config( young_utilization_threshold: f64, headroom_factor: f64, ) -> Self

Create a scheduler with custom thresholds.

pub fn should_collect(&self, metrics: &HeapMetrics) -> CollectionType

Determine what collection should happen based on current heap metrics.

pub fn record_young_gc(&mut self, pause_duration: Duration)

Record that a young GC happened. Resets the per-young-cycle counters.

pub fn record_old_gc(&mut self, pause_duration: Duration)

Record that an old GC happened.

pub fn record_full_gc(&mut self, pause_duration: Duration)

Record a full GC (resets both generation counters).

pub fn record_allocation(&mut self, bytes: usize)

Record an allocation of bytes bytes.

pub fn young_gc_count(&self) -> u32

Number of young GCs recorded by this scheduler.

pub fn old_gc_count(&self) -> u32

Number of old GCs recorded by this scheduler.

pub fn young_alloc_bytes(&self) -> usize

Total bytes allocated since last young GC.

pub fn total_alloc_bytes(&self) -> u64

Total bytes allocated since scheduler creation.

pub fn young_utilization_threshold(&self) -> f64

Young-gen utilization threshold.

pub fn headroom_factor(&self) -> f64

Headroom factor for old-gen prediction.

pub fn young_pause_avg(&self) -> Duration

Average young GC pause duration (EMA).

pub fn old_pause_avg(&self) -> Duration

Average old GC pause duration (EMA).

pub fn allocation_rate(&self) -> f64

Current allocation rate (bytes/sec) since the last old GC. Returns 0.0 if no time has elapsed.

Trait Implementations

impl Default for AdaptiveScheduler

fn default() -> Self

Returns the “default value” for a type.