Enum MemError 

pub enum MemError {
    BudgetExhausted {
        engine: EngineId,
        requested: usize,
        available: usize,
        limit: usize,
    },
    GlobalCeilingExceeded {
        allocated: usize,
        ceiling: usize,
        requested: usize,
    },
    DatabaseBudgetExhausted {
        db: DatabaseId,
        requested: usize,
        available: usize,
        limit: usize,
    },
    TenantBudgetExhausted {
        db: DatabaseId,
        tenant: TenantId,
        requested: usize,
        available: usize,
        limit: usize,
    },
    UnknownEngine(EngineId),
    Jemalloc(String),
}

Errors produced by the memory governor.

Variants

BudgetExhausted

Allocation request exceeds the engine’s remaining budget.

Fields

engine: EngineId

requested: usize

available: usize

limit: usize

GlobalCeilingExceeded

The global memory ceiling would be exceeded.

Fields

allocated: usize

ceiling: usize

requested: usize

DatabaseBudgetExhausted

The per-database memory budget would be exceeded.

Fields

db: DatabaseId

requested: usize

available: usize

limit: usize

TenantBudgetExhausted

The per-tenant memory budget would be exceeded.

Fields

db: DatabaseId

tenant: TenantId

requested: usize

available: usize

limit: usize

UnknownEngine(EngineId)

Engine is not registered with the governor.

Jemalloc(String)

jemalloc introspection error.

Trait Implementations

impl Debug for MemError

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

Formats the value using the given formatter.

impl Display for MemError

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

Formats the value using the given formatter.

impl Error for MemError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.