Struct deno_core::V8TaskSpawner

pub struct V8TaskSpawner { /* private fields */ }

Allows for submission of v8 tasks on the same thread.

Implementations

impl V8TaskSpawner

pub fn spawn<F>(&self, f: F)

where F: FnOnce(&mut HandleScope<'_>) + 'static,

Spawn a task that runs within the crate::JsRuntime event loop from the same thread that the runtime is running on. This function is re-entrant-safe and may be called from ops, from outside of a v8::HandleScope in a plain `async`` task, or even from within another, previously-spawned task.

The task is handed off to be run the next time the event loop is polled, and there are no guarantees as to when this may happen.

Safety

The task shares the same v8::HandleScope as the core event loop, which means that it must maintain the scope in a valid state to avoid corrupting or destroying the runtime.

For example, if the code called by this task can raise an exception, the task must ensure that it calls that code within a new v8::TryCatch to avoid the exception leaking to the event loop’s v8::HandleScope.

Trait Implementations

impl Clone for V8TaskSpawner

fn clone(&self) -> V8TaskSpawner

Returns a copy of the value.

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

Performs copy-assignment from source.