Trait async_std::os::unix::io::AsRawFd

pub trait AsRawFd {
    pub fn as_raw_fd(&self) -> i32;
}

A trait to extract the raw unix file descriptor from an underlying object.

This is only available on unix platforms and must be imported in order to call the method. Windows platforms have a corresponding AsRawHandle and AsRawSocket set of traits.

Required methods

pub fn as_raw_fd(&self) -> i32

Extracts the raw file descriptor.

This method does not pass ownership of the raw file descriptor to the caller. The descriptor is only guaranteed to be valid while the original object has not yet been destroyed.

Example

use std::fs::File;
use std::os::unix::io::{AsRawFd, RawFd};

let mut f = File::open("foo.txt")?;
// Note that `raw_fd` is only valid as long as `f` exists.
let raw_fd: RawFd = f.as_raw_fd();

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Implementations on Foreign Types

impl AsRawFd for Stdin

pub fn as_raw_fd(&self) -> i32

impl AsRawFd for i32

pub fn as_raw_fd(&self) -> i32

impl AsRawFd for ChildStderr

pub fn as_raw_fd(&self) -> i32

impl<'a> AsRawFd for StderrLock<'a>

pub fn as_raw_fd(&self) -> i32

impl AsRawFd for Stderr

pub fn as_raw_fd(&self) -> i32

impl AsRawFd for TcpListener

pub fn as_raw_fd(&self) -> i32

impl AsRawFd for ChildStdout

pub fn as_raw_fd(&self) -> i32

impl<'a> AsRawFd for StdoutLock<'a>

pub fn as_raw_fd(&self) -> i32

impl AsRawFd for TcpStream

pub fn as_raw_fd(&self) -> i32

impl AsRawFd for ChildStdin

pub fn as_raw_fd(&self) -> i32

impl AsRawFd for UdpSocket

pub fn as_raw_fd(&self) -> i32

impl AsRawFd for File

pub fn as_raw_fd(&self) -> i32

impl<'a> AsRawFd for StdinLock<'a>

pub fn as_raw_fd(&self) -> i32

impl AsRawFd for Stdout

pub fn as_raw_fd(&self) -> i32

impl AsRawFd for UnixDatagram

pub fn as_raw_fd(&self) -> i32

impl AsRawFd for UnixStream

pub fn as_raw_fd(&self) -> i32

impl AsRawFd for UnixListener

pub fn as_raw_fd(&self) -> i32

impl<T> AsRawFd for Async<T> where
    T: AsRawFd, 

pub fn as_raw_fd(&self) -> i32

impl AsRawFd for Socket

pub fn as_raw_fd(&self) -> i32

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Implementors

impl AsRawFd for async_std::fs::File

fn as_raw_fd(&self) -> RawFd

impl AsRawFd for async_std::io::Stderr

fn as_raw_fd(&self) -> RawFd

impl AsRawFd for async_std::io::Stdin

fn as_raw_fd(&self) -> RawFd

impl AsRawFd for async_std::io::Stdout

fn as_raw_fd(&self) -> RawFd

impl AsRawFd for async_std::net::TcpListener

fn as_raw_fd(&self) -> RawFd

impl AsRawFd for async_std::net::TcpStream

fn as_raw_fd(&self) -> RawFd

impl AsRawFd for async_std::net::UdpSocket

fn as_raw_fd(&self) -> RawFd

impl AsRawFd for async_std::os::unix::net::UnixDatagram

fn as_raw_fd(&self) -> RawFd

impl AsRawFd for async_std::os::unix::net::UnixListener

fn as_raw_fd(&self) -> RawFd

impl AsRawFd for async_std::os::unix::net::UnixStream

fn as_raw_fd(&self) -> RawFd

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