Struct std::os::wasi::io::OwnedFd

#[repr(transparent)]
pub struct OwnedFd { /* fields omitted */ }

🔬 This is a nightly-only experimental API. (io_safety #87074)

This is supported on WASI only.

拥有所有权的文件描述符。

这将在关闭文件描述符时丢弃。

这使用 repr(transparent) 并具有主机文件描述符的表示，因此它可以在 FFI 中的文件描述符作为消耗参数传递或作为拥有值返回的地方使用，并且它永远不会有值 -1。

Trait Implementations

impl AsFd for OwnedFd

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

🔬 This is a nightly-only experimental API. (io_safety #87074)

This is supported on Unix only.

借用文件描述符。

impl AsRawFd for OwnedFd

fn as_raw_fd(&self) -> RawFd

This is supported on Unix only.

提取原始文件描述符。

impl Debug for OwnedFd

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

使用给定的格式化程序格式化该值。

impl Drop for OwnedFd

fn drop(&mut self)

执行此类型的析构函数。

impl From<ChildStderr> for OwnedFd

This is supported on Unix only.

fn from(child_stderr: ChildStderr) -> OwnedFd

执行转换。

impl From<ChildStdin> for OwnedFd

This is supported on Unix only.

fn from(child_stdin: ChildStdin) -> OwnedFd

执行转换。

impl From<ChildStdout> for OwnedFd

This is supported on Unix only.

fn from(child_stdout: ChildStdout) -> OwnedFd

执行转换。

impl From<File> for OwnedFd

fn from(file: File) -> OwnedFd

执行转换。

impl From<OwnedFd> for UnixDatagram

This is supported on Unix only.

fn from(owned: OwnedFd) -> Self

执行转换。

impl From<OwnedFd> for UnixListener

This is supported on Unix only.

fn from(fd: OwnedFd) -> UnixListener

执行转换。

impl From<OwnedFd> for UnixStream

This is supported on Unix only.

fn from(owned: OwnedFd) -> Self

执行转换。

impl From<OwnedFd> for Stdio

This is supported on Unix only.

fn from(fd: OwnedFd) -> Stdio

执行转换。

impl From<OwnedFd> for PidFd

This is supported on Linux only.

fn from(fd: OwnedFd) -> Self

执行转换。

impl From<OwnedFd> for File

fn from(owned_fd: OwnedFd) -> Self

执行转换。

impl From<OwnedFd> for TcpStream

fn from(owned_fd: OwnedFd) -> Self

执行转换。

impl From<OwnedFd> for TcpListener

fn from(owned_fd: OwnedFd) -> Self

执行转换。

impl From<OwnedFd> for UdpSocket

fn from(owned_fd: OwnedFd) -> Self

执行转换。

impl From<PidFd> for OwnedFd

This is supported on Linux only.

fn from(pid_fd: PidFd) -> Self

执行转换。

impl From<TcpListener> for OwnedFd

fn from(tcp_listener: TcpListener) -> OwnedFd

执行转换。

impl From<TcpStream> for OwnedFd

fn from(tcp_stream: TcpStream) -> OwnedFd

执行转换。

impl From<UdpSocket> for OwnedFd

fn from(udp_socket: UdpSocket) -> OwnedFd

执行转换。

impl From<UnixDatagram> for OwnedFd

This is supported on Unix only.

fn from(unix_datagram: UnixDatagram) -> OwnedFd

执行转换。

impl From<UnixListener> for OwnedFd

This is supported on Unix only.

fn from(listener: UnixListener) -> OwnedFd

执行转换。

impl From<UnixStream> for OwnedFd

This is supported on Unix only.

fn from(unix_stream: UnixStream) -> OwnedFd

执行转换。

impl FromRawFd for OwnedFd

unsafe fn from_raw_fd(fd: RawFd) -> Self

This is supported on Unix only.

根据给定的原始文件描述符构造 Self 的新实例。

Safety

fd 指向的资源必须是开放的并且适合承担所有权。 除了 close 之外，资源不得需要任何清理。

impl IntoRawFd for OwnedFd

fn into_raw_fd(self) -> RawFd

This is supported on Unix only.

消费这个对象，返回原始的底层文件描述符。