Struct PressureThresholds 

pub struct PressureThresholds {
    pub medium_watermark: f64,
    pub high_watermark: f64,
    pub critical_watermark: f64,
}

Fractional watermarks that define memory pressure level transitions.

All values are in the range [0.0, 1.0] and represent the fraction of pool buffers that must be in-use to reach that level.

Fields

medium_watermark: f64

In-use fraction at or above which the level becomes Medium. Default 0.5.

high_watermark: f64

In-use fraction at or above which the level becomes High. Default 0.75.

critical_watermark: f64

In-use fraction at or above which the level becomes Critical. Default 0.9.

Implementations

impl PressureThresholds

pub fn new(medium: f64, high: f64, critical: f64) -> Self

Creates custom thresholds. All values must be in [0.0, 1.0] and medium ≤ high ≤ critical.

Panics

Panics if values are out of order or outside [0.0, 1.0].

pub fn level_for_fraction(&self, in_use_fraction: f64) -> MemoryPressureLevel

Maps an in-use fraction to the corresponding MemoryPressureLevel.

Trait Implementations

impl Clone for PressureThresholds

fn clone(&self) -> PressureThresholds

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PressureThresholds

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

Formats the value using the given formatter.

impl Default for PressureThresholds

fn default() -> Self

Returns the “default value” for a type.

impl PartialEq for PressureThresholds

fn eq(&self, other: &PressureThresholds) -> 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 PressureThresholds

impl StructuralPartialEq for PressureThresholds