Enum ReadinessSource 

pub enum ReadinessSource {
    None,
    Notify,
    Waitable(i32),
}

phase-521 W3 (RFC-0113 D4) — how a session reports that data arrived.

The executor’s park ends for exactly two reasons: the tier’s next deadline, or readiness. This is the readiness half, in one of two forms, and the executor picks its wait from it rather than blocking inside the transport.

Variants

None

Neither form: the executor can only learn of an arrival by blocking in Session::drive_io. RFC-0113 D5 refuses this once phase-521 W6 lands.

Notify

The backend calls the wake callback Session::set_wake_callback installed when data arrives (a transport thread, a listener, an RX interrupt).

Waitable(i32)

An OS handle that becomes readable when data arrives — a file descriptor on POSIX and NuttX. The executor multiplexes it with its own wake object and drives the session non-blockingly after the park. It must stay valid until the session closes.

Trait Implementations

impl Clone for ReadinessSource

fn clone(&self) -> ReadinessSource

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ReadinessSource

impl Debug for ReadinessSource

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

Formats the value using the given formatter.

impl Eq for ReadinessSource

impl PartialEq for ReadinessSource

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ReadinessSource