Enum HandlerContract 

pub enum HandlerContract {
    AsyncSignalSafe,
    SeparateThreadWithBudget {
        millis: u32,
    },
}

What an implementor’s interrupt handler may do.

This is part of the contract, not trivia: a handler that is legal on one OS is undefined behavior on the other, and a caller cannot write one correctly without knowing which it has.

Variants

AsyncSignalSafe

The handler runs on an arbitrary thread inside a signal context. No allocation, no locks, no non-reentrant libc. Anything else is UB.

SeparateThreadWithBudget

SetConsoleCtrlHandler runs the handler on a thread of its own, and the process is killed if it has not returned within roughly this budget for CTRL_CLOSE_EVENT. It may allocate and lock.

Fields

millis: u32

Trait Implementations

impl Clone for HandlerContract

fn clone(&self) -> HandlerContract

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for HandlerContract

impl Debug for HandlerContract

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

Formats the value using the given formatter.

impl Eq for HandlerContract

impl PartialEq for HandlerContract

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for HandlerContract