Enum CpuPlacementError 

pub enum CpuPlacementError {
    TopologyDiscovery {
        requested: CpuPlacement,
        backend: CpuBackendKind,
        source: CpuTopologyError,
    },
    ManagedAffinityUnavailable {
        requested: CpuPlacement,
        backend: CpuBackendKind,
    },
    NumaDiscoveryUnavailable {
        requested: CpuPlacement,
        backend: CpuBackendKind,
    },
    UnknownNumaNode {
        requested: CpuPlacement,
        backend: CpuBackendKind,
        node: NumaNodeId,
    },
    ExternalProviderAffinityUnmanaged {
        requested: CpuPlacement,
        backend: CpuBackendKind,
    },
    UnregisteredExternalPlacement {
        requested: CpuPlacement,
    },
    EngineConstruction {
        requested: CpuPlacement,
        backend: CpuBackendKind,
        source: CpuEngineConstructionError,
    },
    InternalState {
        requested: CpuPlacement,
        backend: CpuBackendKind,
        message: &'static str,
    },
}

Failure to resolve a CPU placement for the selected public provider kind.

Examples

use tenferro_cpu::{CpuBackendKind, CpuPlacement, CpuPlacementError};

let error = CpuPlacementError::ExternalProviderAffinityUnmanaged {
    requested: CpuPlacement::AllAllowed,
    backend: CpuBackendKind::Blas,
};
assert!(error.to_string().contains("affinity"));

Variants

TopologyDiscovery

Process-visible topology discovery failed before placement resolution.

Fields

requested: CpuPlacement

The placement requested by the caller.

backend: CpuBackendKind

The selected public backend kind.

source: CpuTopologyError

The preserved topology failure category.

ManagedAffinityUnavailable

The current platform cannot construct verified pinned worker pools.

Fields

requested: CpuPlacement

The explicit placement requested by the caller.

backend: CpuBackendKind

The selected public backend kind.

NumaDiscoveryUnavailable

NUMA-node placement was requested but OS NUMA discovery was unavailable.

Fields

requested: CpuPlacement

The placement requested by the caller.

backend: CpuBackendKind

The selected public backend kind.

UnknownNumaNode

The requested OS NUMA node has no usable CPUs in this process.

Fields

requested: CpuPlacement

The placement requested by the caller.

backend: CpuBackendKind

The selected public backend kind.

node: NumaNodeId

The unknown or process-unavailable OS node ID.

ExternalProviderAffinityUnmanaged

An external provider owns worker affinity, so explicit placement is unsafe.

Fields

requested: CpuPlacement

The explicit placement requested by the caller.

backend: CpuBackendKind

The selected public backend kind.

UnregisteredExternalPlacement

An externally managed coordinator has no domain for the explicit placement.

Fields

requested: CpuPlacement

The explicit registry-only placement request.

EngineConstruction

A pinned engine could not be built for an otherwise valid placement.

Fields

requested: CpuPlacement

The placement requested by the caller.

backend: CpuBackendKind

The selected public backend kind.

source: CpuEngineConstructionError

Typed worker-pool construction or affinity failure.

InternalState

The placement state reached an impossible internal compatibility mode.

Fields

requested: CpuPlacement

The placement requested by the caller.

backend: CpuBackendKind

The selected public backend kind.

message: &'static str

Stable internal-state diagnostic.

Trait Implementations

impl Debug for CpuPlacementError

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

Formats the value using the given formatter.

impl Display for CpuPlacementError

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

Formats the value using the given formatter.

impl Error for CpuPlacementError

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.