Struct MemoryAccountant 

pub struct MemoryAccountant { /* private fields */ }

Budget enforcer for memory-constrained edge devices. All methods are &self — interior mutability via atomics.

Implementations

impl MemoryAccountant

pub fn no_limit() -> Self

No budget enforcement. All allocations succeed. Default behavior.

pub fn with_budget(bytes: usize) -> Self

Set a byte ceiling. Allocations exceeding this fail.

pub fn try_allocate(&self, bytes: usize) -> Result<()>

Attempt to allocate bytes. CAS-based, no TOCTOU.

pub fn release(&self, bytes: usize)

Return freed bytes to the budget.

pub fn set_budget(&self, limit: Option<usize>) -> Result<()>

Runtime budget adjustment. None removes limit. Returns Err if new limit exceeds startup ceiling.

pub fn usage(&self) -> MemoryUsage

Snapshot of current memory state.

pub fn try_allocate_for( &self, bytes: usize, subsystem: &str, operation: &str, hint: &str, ) -> Result<()>

Trait Implementations

impl Debug for MemoryAccountant

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

Formats the value using the given formatter.