Struct MemoryAccountant 

pub struct MemoryAccountant { /* private fields */ }

Per-class memory usage bookkeeping.

O(1) allocate/deallocate and cheap snapshots; safe to share via Mutex since these sit behind the crate::memory::MemoryManager handle.

Implementations

impl MemoryAccountant

pub fn new() -> Self

Create an empty accountant.

pub fn allocate(&self, attr: MemoryAttribution, amount: u64)

Attribute amount bytes to attr.

pub fn deallocate(&self, attr: MemoryAttribution, amount: u64)

Release amount bytes attributed to attr (saturates per-class so an over-release can never make totals negative).

pub fn total(&self) -> u64

Total attributed bytes currently live.

pub fn class_usage(&self, class: MemoryAccountingClass) -> u64

Attributed bytes for one class (0 if never allocated).

pub fn snapshot(&self) -> Vec<(MemoryAccountingClass, u64)>

Snapshot of (class, bytes) for reporting, non-zero classes only.

Trait Implementations

impl Debug for MemoryAccountant

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

Formats the value using the given formatter.

impl Default for MemoryAccountant

fn default() -> MemoryAccountant

Returns the “default value” for a type.