Struct FaultLatch 

pub struct FaultLatch { /* private fields */ }

2026-09-25: A one-shot, first-writer-wins fault flag.

Constructible on its own so tests need not latch the process-wide instance, which cannot be reset.

Implementations

impl FaultLatch

pub const fn new() -> Self

pub fn latch(&self, reason: impl Into<String>) -> bool

2026-09-25: Record a fatal fault. Returns true only for the call that set the latch; later calls leave the first reason in place.

pub fn fault(&self) -> Option<&str>

2026-09-25: The reason for the fault, or None if healthy.

pub fn is_faulted(&self) -> bool

Trait Implementations

impl Debug for FaultLatch

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

Formats the value using the given formatter.

impl Default for FaultLatch

fn default() -> FaultLatch

Returns the “default value” for a type.