Module futures::io

Asynchronous I/O.

This module is the asynchronous version of std::io. It defines two traits, AsyncRead and AsyncWrite, which mirror the Read and Write traits of the standard library. However, these traits integrate with the asynchronous task system, so that if an I/O object isn't ready for reading (or writing), the thread is not blocked, and instead the current task is queued to be woken when I/O is ready.

In addition, the AsyncReadExt and AsyncWriteExt extension traits offer a variety of useful combinators for operating with asynchronous I/O objects, including ways to work with them using futures, streams and sinks.

Structs

AllowStdIo	A simple wrapper type which allows types which implement only implement std::io::Read or std::io::Write to be used in contexts which expect an AsyncRead or AsyncWrite.
Close	A future used to fully close an I/O object.
CopyInto	A future which will copy all data from a reader into a writer.
Error	The error type for I/O operations of the Read, Write, Seek, and associated traits.
Flush	A future used to fully flush an I/O object.
Initializer	A type used to conditionally initialize buffers passed to AsyncRead methods, modeled after std.
IoVec	A specialized byte slice type for performing vectored I/O operations.
Read	A future which can be used to easily read available number of bytes to fill a buffer.
ReadExact	A future which can be used to easily read exactly enough bytes to fill a buffer.
ReadHalf	The readable half of an object returned from AsyncRead::split.
ReadToEnd	A future which can be used to easily read the entire contents of a stream into a vector.
Window	A owned window around an underlying buffer.
WriteAll	A future used to write the entire contents of some data to a stream.
WriteHalf	The writable half of an object returned from AsyncRead::split.

Enums

ErrorKind

A list specifying general categories of I/O error.

Traits

AsyncRead	Read bytes asynchronously.
AsyncReadExt	An extension trait which adds utility methods to AsyncRead types.
AsyncWrite	Write bytes asynchronously.
AsyncWriteExt	An extension trait which adds utility methods to AsyncWrite types.

Type Definitions

Result

A specialized Result type for I/O operations.