Struct zng_task::io::Measure

pub struct Measure<T> { /* private fields */ }

Measure read/write of an async task.

Metrics are updated after each read/write, if you read/write all bytes in one call the metrics will only update once.

Implementations

impl<T> Measure<T>

pub fn start( task: T, total_read: impl Into<ByteLength>, total_write: impl Into<ByteLength>, ) -> Self

Start measuring a new read/write task.

pub fn resume( task: T, read_progress: (impl Into<ByteLength>, impl Into<ByteLength>), write_progress: (impl Into<ByteLength>, impl Into<ByteLength>), ) -> Self

Continue measuring a read/write task.

pub fn metrics(&mut self) -> &Metrics

Current metrics.

This value is updated after every read/write.

pub fn finish(self) -> (T, Metrics)

Unwrap the inner task and final metrics.

Trait Implementations

impl<T: AsyncRead + Unpin> AsyncRead for Measure<T>

fn poll_read( self: Pin<&mut Self>, cx: &mut Context<'_>, buf: &mut [u8], ) -> Poll<Result<usize>>

Attempt to read from the AsyncRead into buf.

fn poll_read_vectored( self: Pin<&mut Self>, cx: &mut Context<'_>, bufs: &mut [IoSliceMut<'_>], ) -> Poll<Result<usize, Error>>

Attempt to read from the AsyncRead into bufs using vectored IO operations.

impl<T: AsyncWrite + Unpin> AsyncWrite for Measure<T>

fn poll_write( self: Pin<&mut Self>, cx: &mut Context<'_>, buf: &[u8], ) -> Poll<Result<usize>>

Attempt to write bytes from buf into the object.

fn poll_flush(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<()>>

Attempt to flush the object, ensuring that any buffered data reach their destination.

fn poll_close(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<()>>

Attempt to close the object.

fn poll_write_vectored( self: Pin<&mut Self>, cx: &mut Context<'_>, bufs: &[IoSlice<'_>], ) -> Poll<Result<usize, Error>>

Attempt to write bytes from bufs into the object using vectored IO operations.