Struct RuntimeOptions 

pub struct RuntimeOptions {
    pub flavor: RuntimeFlavor,
    pub worker_threads: usize,
    pub max_blocking_tasks: usize,
    pub thread_name_prefix: String,
    pub park_deadline: Option<Duration>,
    pub drain_linger: Duration,
}

Fields

flavor: RuntimeFlavor

worker_threads: usize

max_blocking_tasks: usize

thread_name_prefix: String

park_deadline: Option<Duration>

Deadline-based block_on deadlock detection: bounds how long a runtime-owned park (the CurrentThread block_on parker and MultiThread COOPERATIVE driver parks – never the foreign/napi whole-build park) may sleep with ZERO runtime progress before panicking with the typed BlockOnDeadlock diagnostic. None (the default) disables deadline detection: a legitimately long park (e.g. awaiting a slow JS plugin) must never panic a production build. The runtime itself never reads the environment; the embedder resolves its own configuration (conventionally a PARK_DEADLINE_ENV-style variable) into this field at addon load. The threadless-wasm CERTAIN deadlock check is independent of this knob and always on.

drain_linger: Duration

MultiThread drainer idle-linger budget (see MultiThreadExecutor::drain): after running the runnable/blocking queues empty a drainer parks on its own parker for up to this long before returning its thread to rayon, so a wave landing within the budget resumes it with one targeted wake instead of a spawn_fifo respawn through rayon’s idle protocol. Duration::ZERO disables lingering (legacy exit-and-respawn on every empty queue). Validation clamps the budget to MAX_DRAIN_LINGER_MICROS: a linger occupies a pool worker and an active_drainers slot while idle, so an unbounded value would pin workers indefinitely. As with park_deadline, the runtime itself never reads the environment; the embedder resolves its configuration (conventionally DRAIN_LINGER_ENV, which the napi adapter’s install resolves for hosts that use it) into this field at addon load. Ignored by the CurrentThread flavor, which has no pool drainers.

Trait Implementations

impl Clone for RuntimeOptions

fn clone(&self) -> RuntimeOptions

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for RuntimeOptions

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

Formats the value using the given formatter.

impl Default for RuntimeOptions

fn default() -> Self

Returns the “default value” for a type.

impl From<RuntimeOptions> for BindingRuntimeConfig

fn from(value: RuntimeOptions) -> Self

Converts to this type from the input type.