Struct TimerDriverRegistry 

pub struct TimerDriverRegistry { /* private fields */ }

Host timer drivers keyed by registration order. A driver is owned by a host context that can die independently of the process – the Node binding registers one driver per importing napi env, and a worker’s env teardown kills its driver’s threadsafe function. A single first-wins slot is therefore unsound: a worker that imports the binding first and then exits would permanently shadow the slot with a dead driver, and every CT timer armed afterwards would busy-fail against it. Selecting only the newest live driver is also insufficient: a live worker can be CPU-blocked indefinitely while another environment remains responsive. The registry therefore keeps all registrants and returns a stable snapshot of every live driver at each Sleep poll, sweeping dead entries out as it goes.

Instance-based (not a hidden global) so tests exercise registration/eviction/selection against local registries; production uses the process-global one behind register_timer_driver/unregister_timer_driver/has_live_timer_driver.

Implementations

impl TimerDriverRegistry

pub fn register(&self, driver: Arc<dyn TimerDriver>) -> TimerDriverId

Add driver as the newest registrant and return its handle.

pub fn unregister(&self, id: TimerDriverId)

Drop the registration behind id (no-op when already swept/removed).

pub fn has_live_driver(&self) -> bool

Whether a LIVE driver is currently registered (dead-only counts as no).

Trait Implementations

impl Default for TimerDriverRegistry

fn default() -> TimerDriverRegistry

Returns the “default value” for a type.

impl Drop for TimerDriverRegistry

fn drop(&mut self)

Executes the destructor for this type.

fn pin_drop(self: Pin<&mut Self>)

🔬This is a nightly-only experimental API. (pin_ergonomics)

Execute the destructor for this type, but different to Drop::drop, it requires self to be pinned.