Struct Request 

pub struct Request { /* private fields */ }

An owned non-blocking streaming request.

A request keeps its parent Engine alive. Lifecycle methods require mutable access, and the request is intentionally Send but not Sync.

Implementations

impl Request

pub fn is_done(&self) -> bool

Returns whether native callback delivery has finished.

pub fn cancel(&mut self) -> Result<(), Error>

Requests cancellation.

Cancellation is idempotent. The ABI does not report whether this call changed native state, so wait returns RequestOutcome::Cancelled when cancellation succeeded after a false completion probe and no terminal callback was subsequently observed. A terminal callback wins that race unless it stops or panics.

pub fn wait(&mut self) -> Result<RequestOutcome, Error>

Waits for callback delivery to finish and returns its terminal outcome.

Calling this from this request’s own callback returns Error::RequestCallbackThread without entering native code.

pub fn native_error(&self) -> Result<Option<String>, Error>

Copies the native request diagnostic after completion.

Returns None while the request is running or when it completed without a native diagnostic. Callback panics are reported by wait rather than through this native string.

Trait Implementations

impl Debug for Request

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

Formats the value using the given formatter.

impl Drop for Request

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.

impl Send for Request