Struct ScopedMemory 

pub struct ScopedMemory { /* private fields */ }

A MemoryGovernor handle bound to one database, tenant, and engine.

Implementations

impl ScopedMemory

pub fn new( governor: Arc<MemoryGovernor>, database_id: DatabaseId, tenant_id: TenantId, engine: EngineId, ) -> Self

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

Reserve bytes, checking global, database, tenant, then engine.

Errors

Names the first exhausted layer.

pub fn charge(&self, bytes: usize) -> ReservationToken

Account bytes already resident. Never fails.

Denying a charge hides allocated memory, it never frees it.

pub fn engine(&self) -> EngineId

pub fn database_id(&self) -> DatabaseId

pub fn tenant_id(&self) -> TenantId

pub fn governor(&self) -> &Arc<MemoryGovernor>

Trait Implementations

impl Clone for ScopedMemory

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 ScopedMemory

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

Formats the value using the given formatter.