use crate::sys_common::{AsInner, IntoInner};
/// Raw file descriptors.
+#[cfg_attr(not(bootstrap), rustc_allowed_through_unstable_modules)]
#[stable(feature = "rust1", since = "1.0.0")]
pub type RawFd = raw::c_int;
/// This is only available on unix and WASI platforms and must be imported in
/// order to call the method. Windows platforms have a corresponding
/// `AsRawHandle` and `AsRawSocket` set of traits.
+#[cfg_attr(not(bootstrap), rustc_allowed_through_unstable_modules)]
#[stable(feature = "rust1", since = "1.0.0")]
pub trait AsRawFd {
/// Extracts the raw file descriptor.
/// A trait to express the ability to construct an object from a raw file
/// descriptor.
+#[cfg_attr(not(bootstrap), rustc_allowed_through_unstable_modules)]
#[stable(feature = "from_raw_os", since = "1.1.0")]
pub trait FromRawFd {
/// Constructs a new instance of `Self` from the given raw file
///
/// # Safety
///
- /// The `fd` passed in must be a valid an open file descriptor.
+ /// The `fd` passed in must be a valid and open file descriptor.
///
/// # Example
///
/// A trait to express the ability to consume an object and acquire ownership of
/// its raw file descriptor.
+#[cfg_attr(not(bootstrap), rustc_allowed_through_unstable_modules)]
#[stable(feature = "into_raw_os", since = "1.4.0")]
pub trait IntoRawFd {
/// Consumes this object, returning the raw underlying file descriptor.
libc::STDERR_FILENO
}
}
+
+/// This impl allows implementing traits that require `AsRawFd` on Arc.
+/// ```
+/// # #[cfg(any(unix, target_os = "wasi"))] mod group_cfg {
+/// # #[cfg(target_os = "wasi")]
+/// # use std::os::wasi::io::AsRawFd;
+/// # #[cfg(unix)]
+/// # use std::os::unix::io::AsRawFd;
+/// use std::net::UdpSocket;
+/// use std::sync::Arc;
+/// trait MyTrait: AsRawFd {
+/// }
+/// impl MyTrait for Arc<UdpSocket> {}
+/// impl MyTrait for Box<UdpSocket> {}
+/// # }
+/// ```
+#[stable(feature = "asrawfd_ptrs", since = "1.63.0")]
+impl<T: AsRawFd> AsRawFd for crate::sync::Arc<T> {
+ #[inline]
+ fn as_raw_fd(&self) -> RawFd {
+ (**self).as_raw_fd()
+ }
+}
+
+#[stable(feature = "asrawfd_ptrs", since = "1.63.0")]
+impl<T: AsRawFd> AsRawFd for Box<T> {
+ #[inline]
+ fn as_raw_fd(&self) -> RawFd {
+ (**self).as_raw_fd()
+ }
+}