Struct BudgetConfig 

pub struct BudgetConfig { /* private fields */ }

Knobs that govern a MemoryBudget instance.

Construct via BudgetConfig::from_env or build by hand for tests. Field values are absolute bytes (not MiB) so downstream code never has to second-guess the unit.

Implementations

impl BudgetConfig

pub fn new(target_bytes: u64) -> Self

Build a config explicitly. Useful for tests.

pub fn from_env(system_ram_bytes: Option<u64>) -> Self

Resolve a config from environment variables.

Reads:

• MEMORY_BUDGET_TARGET_MIB (overrides the auto-derived target)
• MEMORY_BUDGET_TICK_SECS (default 5)
• MEMORY_BUDGET_HARD_CEILING_MIB (optional)

When MEMORY_BUDGET_TARGET_MIB is unset, the target is min(0.8 × system_ram, 4096 MiB). system_ram_bytes is the installed RAM as seen by sysinfo and is required when the target is derived automatically.

pub fn target_bytes(&self) -> u64

Soft RSS target in bytes.

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

Optional hard abort ceiling.

pub fn tick(&self) -> Duration

Reapportionment cadence.

pub fn with_tick(self, tick: Duration) -> Self

Override the reapportionment cadence. Convenience for tests that want to drive several ticks per second instead of one every five.

Trait Implementations

impl Clone for BudgetConfig

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for BudgetConfig

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

Formats the value using the given formatter.