Struct Stdin

pub struct Stdin { /* private fields */ }

Available on crate feature io-std only.

A handle to the standard input stream of a process.

The handle implements the AsyncRead trait, but beware that concurrent reads of Stdin must be executed with care.

This handle is best used for non-interactive uses, such as when a file is piped into the application. For technical reasons, stdin is implemented by using an ordinary blocking read on a separate thread, and it is impossible to cancel that read. This can make shutdown of the runtime hang until the user presses enter.

For interactive uses, it is recommended to spawn a thread dedicated to user input and use blocking IO directly in that thread.

Created by the stdin function.

Trait Implementations

impl AsFd for Stdin

fn as_fd(&self) -> BorrowedFd<'_>

Borrows the file descriptor. Read more

impl AsHandle for Stdin

Available on Windows only.

fn as_handle(&self) -> BorrowedHandle<'_>

Available on docsrs and Unix and (crate features fs or net) only.

See std::os::windows::io::AsHandle::as_handle

impl AsRawFd for Stdin

fn as_raw_fd(&self) -> RawFd

Extracts the raw file descriptor. Read more

impl AsRawHandle for Stdin

Available on Windows only.

fn as_raw_handle(&self) -> RawHandle

Available on docsrs and Unix and (crate features fs or net) only.

See std::os::windows::io::AsRawHandle::as_raw_handle

impl AsyncRead for Stdin

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

Attempts to read from the AsyncRead into buf. Read more

impl Debug for Stdin

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

Formats the value using the given formatter. Read more

Auto Trait Implementations

impl Freeze for Stdin

impl RefUnwindSafe for Stdin

impl Send for Stdin

impl Sync for Stdin

impl Unpin for Stdin

impl UnsafeUnpin for Stdin

impl UnwindSafe for Stdin

Blanket Implementations

impl<T> Any for T
where T: 'static + ?Sized,

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

impl<R> AsyncReadExt for R
where R: AsyncRead + ?Sized,

fn chain<R>(self, next: R) -> Chain<Self, R>
where Self: Sized, R: AsyncRead,

Available on crate feature io-util only.

Creates a new AsyncRead instance that chains this stream with next. Read more

fn read<'a>(&'a mut self, buf: &'a mut [u8]) -> Read<'a, Self>
where Self: Unpin,

Available on crate feature io-util only.

Pulls some bytes from this source into the specified buffer, returning how many bytes were read. Read more

fn read_buf<'a, B>(&'a mut self, buf: &'a mut B) -> ReadBuf<'a, Self, B>
where Self: Unpin, B: BufMut + ?Sized,

Available on crate feature io-util only.

Pulls some bytes from this source into the specified buffer, advancing the buffer’s internal cursor. Read more

fn read_exact<'a>(&'a mut self, buf: &'a mut [u8]) -> ReadExact<'a, Self>
where Self: Unpin,

Available on crate feature io-util only.

Reads the exact number of bytes required to fill buf. Read more

fn read_u8(&mut self) -> ReadU8<&mut Self>
where Self: Unpin,

Available on crate feature io-util only.

Reads an unsigned 8 bit integer from the underlying reader. Read more

fn read_i8(&mut self) -> ReadI8<&mut Self>
where Self: Unpin,

Available on crate feature io-util only.

Reads a signed 8 bit integer from the underlying reader. Read more

fn read_u16(&mut self) -> ReadU16<&mut Self>
where Self: Unpin,

Available on crate feature io-util only.

Reads an unsigned 16-bit integer in big-endian order from the underlying reader. Read more

fn read_i16(&mut self) -> ReadI16<&mut Self>
where Self: Unpin,

Available on crate feature io-util only.

Reads a signed 16-bit integer in big-endian order from the underlying reader. Read more

fn read_u32(&mut self) -> ReadU32<&mut Self>
where Self: Unpin,

Available on crate feature io-util only.

Reads an unsigned 32-bit integer in big-endian order from the underlying reader. Read more

fn read_i32(&mut self) -> ReadI32<&mut Self>
where Self: Unpin,

Available on crate feature io-util only.

Reads a signed 32-bit integer in big-endian order from the underlying reader. Read more

fn read_u64(&mut self) -> ReadU64<&mut Self>
where Self: Unpin,

Available on crate feature io-util only.

Reads an unsigned 64-bit integer in big-endian order from the underlying reader. Read more

fn read_i64(&mut self) -> ReadI64<&mut Self>
where Self: Unpin,

Available on crate feature io-util only.

Reads an signed 64-bit integer in big-endian order from the underlying reader. Read more

fn read_u128(&mut self) -> ReadU128<&mut Self>
where Self: Unpin,

Available on crate feature io-util only.

Reads an unsigned 128-bit integer in big-endian order from the underlying reader. Read more

fn read_i128(&mut self) -> ReadI128<&mut Self>
where Self: Unpin,

Available on crate feature io-util only.

Reads an signed 128-bit integer in big-endian order from the underlying reader. Read more

fn read_f32(&mut self) -> ReadF32<&mut Self>
where Self: Unpin,

Available on crate feature io-util only.

Reads an 32-bit floating point type in big-endian order from the underlying reader. Read more

fn read_f64(&mut self) -> ReadF64<&mut Self>
where Self: Unpin,

Available on crate feature io-util only.

Reads an 64-bit floating point type in big-endian order from the underlying reader. Read more

fn read_u16_le(&mut self) -> ReadU16Le<&mut Self>
where Self: Unpin,

Available on crate feature io-util only.

Reads an unsigned 16-bit integer in little-endian order from the underlying reader. Read more

fn read_i16_le(&mut self) -> ReadI16Le<&mut Self>
where Self: Unpin,

Available on crate feature io-util only.

Reads a signed 16-bit integer in little-endian order from the underlying reader. Read more

fn read_u32_le(&mut self) -> ReadU32Le<&mut Self>
where Self: Unpin,

Available on crate feature io-util only.

Reads an unsigned 32-bit integer in little-endian order from the underlying reader. Read more

fn read_i32_le(&mut self) -> ReadI32Le<&mut Self>
where Self: Unpin,

Available on crate feature io-util only.

Reads a signed 32-bit integer in little-endian order from the underlying reader. Read more

fn read_u64_le(&mut self) -> ReadU64Le<&mut Self>
where Self: Unpin,

Available on crate feature io-util only.

Reads an unsigned 64-bit integer in little-endian order from the underlying reader. Read more

fn read_i64_le(&mut self) -> ReadI64Le<&mut Self>
where Self: Unpin,

Available on crate feature io-util only.

Reads an signed 64-bit integer in little-endian order from the underlying reader. Read more

fn read_u128_le(&mut self) -> ReadU128Le<&mut Self>
where Self: Unpin,

Available on crate feature io-util only.

Reads an unsigned 128-bit integer in little-endian order from the underlying reader. Read more

fn read_i128_le(&mut self) -> ReadI128Le<&mut Self>
where Self: Unpin,

Available on crate feature io-util only.

Reads an signed 128-bit integer in little-endian order from the underlying reader. Read more

fn read_f32_le(&mut self) -> ReadF32Le<&mut Self>
where Self: Unpin,

Available on crate feature io-util only.

Reads an 32-bit floating point type in little-endian order from the underlying reader. Read more

fn read_f64_le(&mut self) -> ReadF64Le<&mut Self>
where Self: Unpin,

Available on crate feature io-util only.

Reads an 64-bit floating point type in little-endian order from the underlying reader. Read more

fn read_to_end<'a>(&'a mut self, buf: &'a mut Vec<u8>) -> ReadToEnd<'a, Self>
where Self: Unpin,

Available on crate feature io-util only.

Reads all bytes until EOF in this source, placing them into buf. Read more

fn read_to_string<'a>( &'a mut self, dst: &'a mut String, ) -> ReadToString<'a, Self>
where Self: Unpin,

Available on crate feature io-util only.

Reads all bytes until EOF in this source, appending them to buf. Read more

fn take(self, limit: u64) -> Take<Self>
where Self: Sized,

Available on crate feature io-util only.

Creates an adaptor which reads at most limit bytes from it. Read more

impl<T> Borrow<T> for T
where T: ?Sized,

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

impl<T> BorrowMut<T> for T
where T: ?Sized,

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

impl<T> From<T> for T

fn from(t: T) -> T

Returns the argument unchanged.

impl<T> Instrument for T

fn instrument(self, span: Span) -> Instrumented<Self> ⓘ

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more

fn in_current_span(self) -> Instrumented<Self> ⓘ

Instruments this type with the current Span, returning an Instrumented wrapper. Read more

impl<T, U> Into<U> for T
where U: From<T>,

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

impl<T, U> TryFrom<U> for T
where U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.

impl<T> WithSubscriber for T

fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self> ⓘ
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more

fn with_current_subscriber(self) -> WithDispatch<Self> ⓘ

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more

MIT License
Copyright © Tokio Contributors
https://docs.rs/tokio/1.53.1/tokio/io/struct.Stdin.html

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