Struct DeferredToken 

pub struct DeferredToken { /* private fields */ }

Token to return in IoResult::Defer for deferred IOs.

Create with defer_read or defer_write.

Implementations

impl DeferredToken

pub fn poll_read( &mut self, cx: &mut Context<'_>, bytes: &mut [u8], ) -> Poll<Result<(), IoError>>

Polls the deferred token for the results of a read operation.

Copies the results into bytes.

Panics if the deferred token was for a write operation.

pub fn poll_write(&mut self, cx: &mut Context<'_>) -> Poll<Result<(), IoError>>

Polls the deferred token for the results of a write operation.

Panics if the deferred token was for a read operation.

pub async fn write_future(self) -> Result<(), IoError>

Returns a future that waits for the deferred write to complete.

Panics if the deferred token was for a read operation.

pub async fn read_future(self, bytes: &mut [u8]) -> Result<(), IoError>

Returns a future that waits for the deferred read to complete, and copies the results into bytes.

Panics if the deferred token was for a write operation.

Trait Implementations

impl Debug for DeferredToken

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

Formats the value using the given formatter.