Struct ReconfigInFlight 

pub struct ReconfigInFlight { /* private fields */ }

In-flight reconfig guard. Used by [SessionActor] to detect concurrent setPreferences calls and reject the second one with ApplyError::ConcurrentReconfig.

The guard is RAII — lock returns a ReconfigGuard that releases the slot on drop. If a second caller arrives while the guard is held, try_lock returns None and the caller errors out.

We use Arc<Mutex<bool>> rather than a Semaphore(1) because we need try_lock semantics (fail-fast, not block) and the body of the critical section runs &mut self on the actor — a Tokio Mutex would require extra await points that complicate the actor’s select! loop.

Implementations

impl ReconfigInFlight

pub fn new() -> Self

Construct a fresh, unlocked guard controller.

pub fn try_lock(&self) -> Option<ReconfigGuard<'_>>

Try to acquire the in-flight slot.

Returns Some(ReconfigGuard) on success — the guard releases the slot on drop. Returns None if a concurrent call still holds the slot (caller must error out with ApplyError::ConcurrentReconfig).

Trait Implementations

impl Clone for ReconfigInFlight

fn clone(&self) -> ReconfigInFlight

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ReconfigInFlight

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

Formats the value using the given formatter.

impl Default for ReconfigInFlight

fn default() -> ReconfigInFlight

Returns the “default value” for a type.