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Simplify fd examples

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This commit is contained in:
Guillaume Gomez 2020-10-02 16:38:15 +02:00
parent 980e1ff40f
commit d6b838b93a
1 changed files with 16 additions and 19 deletions
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35
library/std/src/sys/unix/ext/io.rs
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@ -30,14 +30,13 @@ pub trait AsRawFd {
///
/// ```no_run
/// use std::fs::File;
/// # use std::io;
/// use std::os::unix::io::{AsRawFd, RawFd};
///
/// fn main() -> std::io::Result<()> {
/// 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();
/// Ok(())
/// }
/// 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();
/// # Ok::<(), io::Error>(())
/// ```
#[stable(feature = "rust1", since = "1.0.0")]
fn as_raw_fd(&self) -> RawFd;
@ -64,16 +63,15 @@ pub trait FromRawFd {
///
/// ```no_run
/// use std::fs::File;
/// # use std::io;
/// use std::os::unix::io::{FromRawFd, IntoRawFd, RawFd};
///
/// fn main() -> std::io::Result<()> {
/// let f = File::open("foo.txt")?;
/// let raw_fd: RawFd = f.into_raw_fd();
/// // SAFETY: no other functions should call `from_raw_fd`, so there
/// // is only one owner for the file descriptor.
/// let f = unsafe { File::from_raw_fd(raw_fd) };
/// Ok(())
/// }
/// let f = File::open("foo.txt")?;
/// let raw_fd: RawFd = f.into_raw_fd();
/// // SAFETY: no other functions should call `from_raw_fd`, so there
/// // is only one owner for the file descriptor.
/// let f = unsafe { File::from_raw_fd(raw_fd) };
/// # Ok::<(), io::Error>(())
/// ```
#[stable(feature = "from_raw_os", since = "1.1.0")]
unsafe fn from_raw_fd(fd: RawFd) -> Self;
@ -93,13 +91,12 @@ pub trait IntoRawFd {
///
/// ```no_run
/// use std::fs::File;
/// # use std::io;
/// use std::os::unix::io::{IntoRawFd, RawFd};
///
/// fn main() -> std::io::Result<()> {
/// let f = File::open("foo.txt")?;
/// let raw_fd: RawFd = f.into_raw_fd();
/// Ok(())
/// }
/// let f = File::open("foo.txt")?;
/// let raw_fd: RawFd = f.into_raw_fd();
/// # Ok::<(), io::Error>(())
/// ```
#[stable(feature = "into_raw_os", since = "1.4.0")]
fn into_raw_fd(self) -> RawFd;