Adding upstream version 86.0.1.upstream/86.0.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 70 insertions, 0 deletions

diff --git a/third_party/rust/tokio/src/io/stdin.rs b/third_party/rust/tokio/src/io/stdin.rs
new file mode 100644
index 0000000000..214c4d0564
--- /dev/null
+++ b/third_party/rust/tokio/src/io/stdin.rs
@@ -0,0 +1,70 @@
+use crate::io::blocking::Blocking;
+use crate::io::AsyncRead;
+
+use std::io;
+use std::pin::Pin;
+use std::task::Context;
+use std::task::Poll;
+
+cfg_io_std! {
+    /// A handle to the standard input stream of a process.
+    ///
+    /// The handle implements the [`AsyncRead`] trait, but beware that concurrent
+    /// reads of `Stdin` must be executed with care.
+    ///
+    /// As an additional caveat, reading from the handle may block the calling
+    /// future indefinitely if there is not enough data available. This makes this
+    /// handle unsuitable for use in any circumstance where immediate reaction to
+    /// available data is required, e.g. interactive use or when implementing a
+    /// subprocess driven by requests on the standard input.
+    ///
+    /// Created by the [`stdin`] function.
+    ///
+    /// [`stdin`]: fn@stdin
+    /// [`AsyncRead`]: trait@AsyncRead
+    #[derive(Debug)]
+    pub struct Stdin {
+        std: Blocking<std::io::Stdin>,
+    }
+
+    /// Constructs a new handle to the standard input of the current process.
+    ///
+    /// The returned handle allows reading from standard input from the within the
+    /// Tokio runtime.
+    ///
+    /// As an additional caveat, reading from the handle may block the calling
+    /// future indefinitely if there is not enough data available. This makes this
+    /// handle unsuitable for use in any circumstance where immediate reaction to
+    /// available data is required, e.g. interactive use or when implementing a
+    /// subprocess driven by requests on the standard input.
+    pub fn stdin() -> Stdin {
+        let std = io::stdin();
+        Stdin {
+            std: Blocking::new(std),
+        }
+    }
+}
+
+#[cfg(unix)]
+impl std::os::unix::io::AsRawFd for Stdin {
+    fn as_raw_fd(&self) -> std::os::unix::io::RawFd {
+        std::io::stdin().as_raw_fd()
+    }
+}
+
+#[cfg(windows)]
+impl std::os::windows::io::AsRawHandle for Stdin {
+    fn as_raw_handle(&self) -> std::os::windows::io::RawHandle {
+        std::io::stdin().as_raw_handle()
+    }
+}
+
+impl AsyncRead for Stdin {
+    fn poll_read(
+        mut self: Pin<&mut Self>,
+        cx: &mut Context<'_>,
+        buf: &mut [u8],
+    ) -> Poll<io::Result<usize>> {
+        Pin::new(&mut self.std).poll_read(cx, buf)
+    }
+}