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Initial implementation of anonymous_pipe
Co-authored-by: Alphyr <[email protected]> Co-authored-by: Jubilee <[email protected]> Signed-off-by: Jiahao XU <[email protected]>
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//! Module for anonymous pipe | ||
//! | ||
//! ``` | ||
//! #![feature(anonymous_pipe)] | ||
//! | ||
//! # #[cfg(miri)] fn main() {} | ||
//! # #[cfg(not(miri))] | ||
//! # fn main() -> std::io::Result<()> { | ||
//! let (reader, writer) = std::pipe::pipe()?; | ||
//! # Ok(()) | ||
//! # } | ||
//! ``` | ||
use crate::{ | ||
io, | ||
sys::anonymous_pipe::{pipe as pipe_inner, AnonPipe}, | ||
}; | ||
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/// Create anonymous pipe that is close-on-exec and blocking. | ||
#[unstable(feature = "anonymous_pipe", issue = "127154")] | ||
#[inline] | ||
pub fn pipe() -> io::Result<(PipeReader, PipeWriter)> { | ||
pipe_inner().map(|(reader, writer)| (PipeReader(reader), PipeWriter(writer))) | ||
} | ||
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/// Read end of the anonymous pipe. | ||
#[unstable(feature = "anonymous_pipe", issue = "127154")] | ||
#[derive(Debug)] | ||
pub struct PipeReader(pub(crate) AnonPipe); | ||
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/// Write end of the anonymous pipe. | ||
#[unstable(feature = "anonymous_pipe", issue = "127154")] | ||
#[derive(Debug)] | ||
pub struct PipeWriter(pub(crate) AnonPipe); | ||
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impl PipeReader { | ||
/// Create a new [`PipeReader`] instance that shares the same underlying file description. | ||
#[unstable(feature = "anonymous_pipe", issue = "127154")] | ||
pub fn try_clone(&self) -> io::Result<Self> { | ||
self.0.try_clone().map(Self) | ||
} | ||
} | ||
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impl PipeWriter { | ||
/// Create a new [`PipeWriter`] instance that shares the same underlying file description. | ||
#[unstable(feature = "anonymous_pipe", issue = "127154")] | ||
pub fn try_clone(&self) -> io::Result<Self> { | ||
self.0.try_clone().map(Self) | ||
} | ||
} | ||
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#[unstable(feature = "anonymous_pipe", issue = "127154")] | ||
impl io::Read for &PipeReader { | ||
fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> { | ||
self.0.read(buf) | ||
} | ||
fn read_vectored(&mut self, bufs: &mut [io::IoSliceMut<'_>]) -> io::Result<usize> { | ||
self.0.read_vectored(bufs) | ||
} | ||
#[inline] | ||
fn is_read_vectored(&self) -> bool { | ||
self.0.is_read_vectored() | ||
} | ||
fn read_to_end(&mut self, buf: &mut Vec<u8>) -> io::Result<usize> { | ||
self.0.read_to_end(buf) | ||
} | ||
fn read_buf(&mut self, buf: io::BorrowedCursor<'_>) -> io::Result<()> { | ||
self.0.read_buf(buf) | ||
} | ||
} | ||
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#[unstable(feature = "anonymous_pipe", issue = "127154")] | ||
impl io::Read for PipeReader { | ||
fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> { | ||
self.0.read(buf) | ||
} | ||
fn read_vectored(&mut self, bufs: &mut [io::IoSliceMut<'_>]) -> io::Result<usize> { | ||
self.0.read_vectored(bufs) | ||
} | ||
#[inline] | ||
fn is_read_vectored(&self) -> bool { | ||
self.0.is_read_vectored() | ||
} | ||
fn read_to_end(&mut self, buf: &mut Vec<u8>) -> io::Result<usize> { | ||
self.0.read_to_end(buf) | ||
} | ||
fn read_buf(&mut self, buf: io::BorrowedCursor<'_>) -> io::Result<()> { | ||
self.0.read_buf(buf) | ||
} | ||
} | ||
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#[unstable(feature = "anonymous_pipe", issue = "127154")] | ||
impl io::Write for &PipeWriter { | ||
fn write(&mut self, buf: &[u8]) -> io::Result<usize> { | ||
self.0.write(buf) | ||
} | ||
#[inline] | ||
fn flush(&mut self) -> io::Result<()> { | ||
Ok(()) | ||
} | ||
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fn write_vectored(&mut self, bufs: &[io::IoSlice<'_>]) -> io::Result<usize> { | ||
self.0.write_vectored(bufs) | ||
} | ||
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#[inline] | ||
fn is_write_vectored(&self) -> bool { | ||
self.0.is_write_vectored() | ||
} | ||
} | ||
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#[unstable(feature = "anonymous_pipe", issue = "127154")] | ||
impl io::Write for PipeWriter { | ||
fn write(&mut self, buf: &[u8]) -> io::Result<usize> { | ||
self.0.write(buf) | ||
} | ||
#[inline] | ||
fn flush(&mut self) -> io::Result<()> { | ||
Ok(()) | ||
} | ||
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fn write_vectored(&mut self, bufs: &[io::IoSlice<'_>]) -> io::Result<usize> { | ||
self.0.write_vectored(bufs) | ||
} | ||
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#[inline] | ||
fn is_write_vectored(&self) -> bool { | ||
self.0.is_write_vectored() | ||
} | ||
} |
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cfg_if::cfg_if! { | ||
if #[cfg(unix)] { | ||
mod unix; | ||
pub(crate) use unix::{AnonPipe, pipe}; | ||
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#[cfg(all(test, not(miri)))] | ||
mod tests; | ||
} else if #[cfg(windows)] { | ||
mod windows; | ||
pub(crate) use windows::{AnonPipe, pipe}; | ||
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#[cfg(all(test, not(miri)))] | ||
mod tests; | ||
} else { | ||
mod unsupported; | ||
pub(crate) use unsupported::{AnonPipe, pipe}; | ||
} | ||
} |
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use crate::{ | ||
io::{Read, Write}, | ||
pipe::pipe, | ||
}; | ||
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#[test] | ||
fn pipe_creation_clone_and_rw() { | ||
let (rx, tx) = pipe().unwrap(); | ||
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tx.try_clone().unwrap().write_all(b"12345").unwrap(); | ||
drop(tx); | ||
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let mut rx2 = rx.try_clone().unwrap(); | ||
drop(rx); | ||
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let mut s = String::new(); | ||
rx2.read_to_string(&mut s).unwrap(); | ||
drop(rx2); | ||
assert_eq!(s, "12345"); | ||
} |
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use crate::{ | ||
io, | ||
os::fd::{AsFd, AsRawFd, BorrowedFd, FromRawFd, IntoRawFd, OwnedFd, RawFd}, | ||
pipe::{PipeReader, PipeWriter}, | ||
process::Stdio, | ||
sys::{fd::FileDesc, pipe::anon_pipe}, | ||
sys_common::{FromInner, IntoInner}, | ||
}; | ||
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pub(crate) type AnonPipe = FileDesc; | ||
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#[inline] | ||
pub(crate) fn pipe() -> io::Result<(AnonPipe, AnonPipe)> { | ||
anon_pipe().map(|(rx, wx)| (rx.into_inner(), wx.into_inner())) | ||
} | ||
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#[unstable(feature = "anonymous_pipe", issue = "127154")] | ||
impl AsFd for PipeReader { | ||
fn as_fd(&self) -> BorrowedFd<'_> { | ||
self.0.as_fd() | ||
} | ||
} | ||
#[unstable(feature = "anonymous_pipe", issue = "127154")] | ||
impl AsRawFd for PipeReader { | ||
fn as_raw_fd(&self) -> RawFd { | ||
self.0.as_raw_fd() | ||
} | ||
} | ||
#[unstable(feature = "anonymous_pipe", issue = "127154")] | ||
impl From<PipeReader> for OwnedFd { | ||
fn from(pipe: PipeReader) -> Self { | ||
FileDesc::into_inner(pipe.0) | ||
} | ||
} | ||
#[unstable(feature = "anonymous_pipe", issue = "127154")] | ||
impl FromRawFd for PipeReader { | ||
unsafe fn from_raw_fd(raw_fd: RawFd) -> Self { | ||
Self(FileDesc::from_raw_fd(raw_fd)) | ||
} | ||
} | ||
#[unstable(feature = "anonymous_pipe", issue = "127154")] | ||
impl IntoRawFd for PipeReader { | ||
fn into_raw_fd(self) -> RawFd { | ||
self.0.into_raw_fd() | ||
} | ||
} | ||
#[unstable(feature = "anonymous_pipe", issue = "127154")] | ||
impl From<PipeReader> for Stdio { | ||
fn from(pipe: PipeReader) -> Self { | ||
Self::from(OwnedFd::from(pipe)) | ||
} | ||
} | ||
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#[unstable(feature = "anonymous_pipe", issue = "127154")] | ||
impl AsFd for PipeWriter { | ||
fn as_fd(&self) -> BorrowedFd<'_> { | ||
self.0.as_fd() | ||
} | ||
} | ||
#[unstable(feature = "anonymous_pipe", issue = "127154")] | ||
impl AsRawFd for PipeWriter { | ||
fn as_raw_fd(&self) -> RawFd { | ||
self.0.as_raw_fd() | ||
} | ||
} | ||
#[unstable(feature = "anonymous_pipe", issue = "127154")] | ||
impl From<PipeWriter> for OwnedFd { | ||
fn from(pipe: PipeWriter) -> Self { | ||
FileDesc::into_inner(pipe.0) | ||
} | ||
} | ||
#[unstable(feature = "anonymous_pipe", issue = "127154")] | ||
impl FromRawFd for PipeWriter { | ||
unsafe fn from_raw_fd(raw_fd: RawFd) -> Self { | ||
Self(FileDesc::from_raw_fd(raw_fd)) | ||
} | ||
} | ||
#[unstable(feature = "anonymous_pipe", issue = "127154")] | ||
impl IntoRawFd for PipeWriter { | ||
fn into_raw_fd(self) -> RawFd { | ||
self.0.into_raw_fd() | ||
} | ||
} | ||
#[unstable(feature = "anonymous_pipe", issue = "127154")] | ||
impl From<PipeWriter> for Stdio { | ||
fn from(pipe: PipeWriter) -> Self { | ||
Self::from(OwnedFd::from(pipe)) | ||
} | ||
} | ||
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#[unstable(feature = "anonymous_pipe", issue = "127154")] | ||
impl From<OwnedFd> for PipeReader { | ||
fn from(owned_fd: OwnedFd) -> Self { | ||
Self(FileDesc::from_inner(owned_fd)) | ||
} | ||
} | ||
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#[unstable(feature = "anonymous_pipe", issue = "127154")] | ||
impl From<OwnedFd> for PipeWriter { | ||
fn from(owned_fd: OwnedFd) -> Self { | ||
Self(FileDesc::from_inner(owned_fd)) | ||
} | ||
} |
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