1 files changed, 44 insertions, 0 deletions
diff --git a/third_party/rust/tokio-fs/src/stdout.rs b/third_party/rust/tokio-fs/src/stdout.rs
new file mode 100644
index 0000000000..1c4cd5ad05
--- /dev/null
+++ b/third_party/rust/tokio-fs/src/stdout.rs
@@ -0,0 +1,44 @@
+use tokio_io::{AsyncWrite};
+
+use futures::Poll;
+
+use std::io::{self, Write, Stdout as StdStdout};
+
+/// A handle to the standard output stream of a process.
+///
+/// The handle implements the [`AsyncWrite`] trait, but beware that concurrent
+/// writes to `Stdout` must be executed with care.
+///
+/// Created by the [`stdout`] function.
+///
+/// [`stdout`]: fn.stdout.html
+/// [`AsyncWrite`]: trait.AsyncWrite.html
+#[derive(Debug)]
+pub struct Stdout {
+    std: StdStdout,
+}
+
+/// Constructs a new handle to the standard output of the current process.
+///
+/// The returned handle allows writing to standard out from the within the Tokio
+/// runtime.
+pub fn stdout() -> Stdout {
+    let std = io::stdout();
+    Stdout { std }
+}
+
+impl Write for Stdout {
+    fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
+        ::would_block(|| self.std.write(buf))
+    }
+
+    fn flush(&mut self) -> io::Result<()> {
+        ::would_block(|| self.std.flush())
+    }
+}
+
+impl AsyncWrite for Stdout {
+    fn shutdown(&mut self) -> Poll<(), io::Error> {
+        Ok(().into())
+    }
+}