Enum PressureLevel 

pub enum PressureLevel {
    Normal,
    Moderate,
    High,
    Critical,
}

Memory pressure level thresholds.

The buffer manager uses these levels to determine when to trigger eviction and spilling.

Variants

Normal

< 70% used - Normal operation, no action needed.

Moderate

70-85% used - Begin evicting cold data proactively.

High

85-95% used - Aggressive eviction, trigger spilling.

Critical

95% used - Critical, block new allocations until memory freed.

Implementations

impl PressureLevel

pub const fn description(&self) -> &'static str

Returns a human-readable description of this pressure level.

pub const fn requires_eviction(&self) -> bool

Returns whether this level requires eviction action.

pub const fn should_spill(&self) -> bool

Returns whether this level should trigger spilling.

pub const fn blocks_allocations(&self) -> bool

Returns whether allocations should be blocked at this level.

Trait Implementations

impl Clone for PressureLevel

fn clone(&self) -> PressureLevel

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PressureLevel

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

Formats the value using the given formatter.

impl Display for PressureLevel

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

Formats the value using the given formatter.

impl Hash for PressureLevel

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for PressureLevel

fn cmp(&self, other: &PressureLevel) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for PressureLevel

fn eq(&self, other: &PressureLevel) -> 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 PartialOrd for PressureLevel

fn partial_cmp(&self, other: &PressureLevel) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Copy for PressureLevel

impl Eq for PressureLevel

impl StructuralPartialEq for PressureLevel