Struct FailureContext 

#[non_exhaustive]
pub struct FailureContext {
    pub memory: Option<MemoryFailure>,
    pub boundary: Option<ResourceBoundary>,
    pub allocation_source: Option<AllocationSource>,
    pub graph_cache_scope_peak_bytes: Option<u64>,
    pub cleanup_deadline_elapsed: bool,
}

Typed evidence about why and where a query failed.

Every field is filled by the owner that observed it. Decoration keeps the first value: an outer layer never replaces the original failure location or allocator snapshot.

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

memory: Option<MemoryFailure>

Allocator snapshot of the budget scope the failing operation ran in.

boundary: Option<ResourceBoundary>

Execution boundary that owned the failed unit of work.

allocation_source: Option<AllocationSource>

Native allocator exception family that reported an allocation failure.

graph_cache_scope_peak_bytes: Option<u64>

High-water mark of a completed resident-graph cache scope, present only after that scope finished its fence and health proof. Not a wire fact.

cleanup_deadline_elapsed: bool

An owner-reported cleanup wait reached its deadline.

Trait Implementations

impl Clone for FailureContext

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 FailureContext

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

Formats the value using the given formatter.

impl Default for FailureContext

fn default() -> Self

Returns the “default value” for a type.

impl Eq for FailureContext

impl PartialEq for FailureContext

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for FailureContext