Struct smithay_client_toolkit::data_device::ReadPipe

pub struct ReadPipe {
    file: Generic<File>,
}

A file descriptor that can only be read from

If the calloop cargo feature is enabled, this can be used as an EventSource in a calloop event loop.

Fields

file: Generic<File>

Trait Implementations

impl AsRawFd for ReadPipe

fn as_raw_fd(&self) -> RawFd

Extracts the raw file descriptor.

impl Debug for ReadPipe

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

Formats the value using the given formatter.

impl EventSource for ReadPipe

type Event = ()

The type of events generated by your source.

type Error = Error

The error type returned from process_events() (not the user callback!).

type Metadata = File

Some metadata of your event source

type Ret = ()

The return type of the user callback

fn process_events<F>( &mut self, readiness: Readiness, token: Token, callback: F ) -> Result<PostAction>where F: FnMut((), &mut File),

Process any relevant events

fn register( &mut self, poll: &mut Poll, token_factory: &mut TokenFactory ) -> Result<()>

Register yourself to this poll instance

fn reregister( &mut self, poll: &mut Poll, token_factory: &mut TokenFactory ) -> Result<()>

Re-register your file descriptors

fn unregister(&mut self, poll: &mut Poll) -> Result<()>

Unregister your file descriptors

fn pre_run<F>(&mut self, _callback: F) -> Result<(), Error>where F: FnMut(Self::Event, &mut Self::Metadata) -> Self::Ret,

Notification that a polling session is going to start

fn post_run<F>(&mut self, _callback: F) -> Result<(), Error>where F: FnMut(Self::Event, &mut Self::Metadata) -> Self::Ret,

Notification that the current polling session ended

impl FromRawFd for ReadPipe

unsafe fn from_raw_fd(fd: RawFd) -> ReadPipe

Constructs a new instance of Self from the given raw file descriptor.

impl IntoRawFd for ReadPipe

fn into_raw_fd(self) -> RawFd

Consumes this object, returning the raw underlying file descriptor.

impl Read for ReadPipe

fn read(&mut self, buf: &mut [u8]) -> Result<usize>

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

fn read_vectored(&mut self, bufs: &mut [IoSliceMut<'_>]) -> Result<usize, Error>

Like read, except that it reads into a slice of buffers.

fn is_read_vectored(&self) -> bool

🔬This is a nightly-only experimental API. (can_vector)

Determines if this Reader has an efficient read_vectored implementation.

fn read_to_end(&mut self, buf: &mut Vec<u8, Global>) -> Result<usize, Error>

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

fn read_to_string(&mut self, buf: &mut String) -> Result<usize, Error>

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

fn read_exact(&mut self, buf: &mut [u8]) -> Result<(), Error>

Read the exact number of bytes required to fill buf.

fn read_buf(&mut self, buf: BorrowedCursor<'_>) -> Result<(), Error>

🔬This is a nightly-only experimental API. (read_buf)

Pull some bytes from this source into the specified buffer.

fn read_buf_exact(&mut self, cursor: BorrowedCursor<'_>) -> Result<(), Error>

🔬This is a nightly-only experimental API. (read_buf)

Read the exact number of bytes required to fill cursor.

fn by_ref(&mut self) -> &mut Selfwhere Self: Sized,

Creates a “by reference” adaptor for this instance of Read.

fn bytes(self) -> Bytes<Self>where Self: Sized,

Transforms this Read instance to an Iterator over its bytes.

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

Creates an adapter which will chain this stream with another.

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

Creates an adapter which will read at most limit bytes from it.