Move eager functions into eager_unix.rs

1 files changed, 41 insertions, 122 deletions

diff --git a/src/resources.rs b/src/resources.rs
index 41f1359c3..5a41ee2db 100644
--- a/src/resources.rs
+++ b/src/resources.rs
@@ -8,18 +8,18 @@
 // descriptors". This module implements a global resource table. Ops (AKA
 // handlers) look up resources by their integer id here.
 
+#[cfg(unix)]
+use eager_unix as eager;
 use errors::DenoError;
 use tokio_util;
 use tokio_write;
 
 use futures;
-use futures::future::Either;
-use futures::future::FutureResult;
+use futures::future::{Either, FutureResult};
 use futures::Poll;
 use std;
 use std::collections::HashMap;
-use std::io::Error;
-use std::io::{Read, Write};
+use std::io::{Error, Read, Write};
 use std::net::{Shutdown, SocketAddr};
 use std::sync::atomic::AtomicIsize;
 use std::sync::atomic::Ordering;
@@ -194,161 +194,80 @@ pub fn lookup(rid: ResourceId) -> Option<Resource> {
   table.get(&rid).map(|_| Resource { rid })
 }
 
-type EagerRead<R, T> =
+pub type EagerRead<R, T> =
   Either<tokio_io::io::Read<R, T>, FutureResult<(R, T, usize), std::io::Error>>;
 
-#[cfg(windows)]
-#[allow(unused_mut)]
-pub fn eager_read<T>(resource: Resource, mut buf: T) -> EagerRead<Resource, T>
-where
-  T: AsMut<[u8]>,
-{
-  Either::A(tokio_io::io::read(resource, buf)).into()
-}
+pub type EagerWrite<R, T> =
+  Either<tokio_write::Write<R, T>, FutureResult<(R, T, usize), std::io::Error>>;
 
-#[cfg(not(windows))]
-use std::os::unix::io::{AsRawFd, FromRawFd, IntoRawFd};
+pub type EagerAccept = Either<
+  tokio_util::Accept,
+  FutureResult<(tokio::net::TcpStream, std::net::SocketAddr), std::io::Error>,
+>;
 
-#[cfg(not(windows))]
-fn eager_read_tcp<T: AsMut<[u8]>>(
-  tcp_stream: &TcpStream,
+#[cfg(not(unix))]
+#[allow(unused_mut)]
+pub fn eager_read<T: AsMut<[u8]>>(
   resource: Resource,
   mut buf: T,
 ) -> EagerRead<Resource, T> {
-  // Unforunately we can't just call read() on tokio::net::TcpStream
-  let fd = (*tcp_stream).as_raw_fd();
-  let mut std_tcp_stream = unsafe { std::net::TcpStream::from_raw_fd(fd) };
-  let read_result = std_tcp_stream.read(buf.as_mut());
-  // std_tcp_stream will close when it gets dropped. Thus...
-  let _ = std_tcp_stream.into_raw_fd();
-  match read_result {
-    Ok(nread) => Either::B(futures::future::ok((resource, buf, nread))),
-    Err(err) => {
-      if err.kind() == std::io::ErrorKind::WouldBlock {
-        Either::A(tokio_io::io::read(resource, buf))
-      } else {
-        Either::B(futures::future::err(err))
-      }
-    }
-  }
+  Either::A(tokio_io::io::read(resource, buf)).into()
+}
+
+#[cfg(not(unix))]
+pub fn eager_write<T: AsRef<[u8]>>(
+  resource: Resource,
+  buf: T,
+) -> EagerWrite<Resource, T> {
+  Either::A(tokio_write::write(resource, buf)).into()
+}
+
+#[cfg(not(unix))]
+pub fn eager_accept(resource: Resource) -> EagerAccept {
+  Either::A(tokio_util::accept(resource)).into()
 }
 
 // This is an optimization that Tokio should do.
 // Attempt to call read() on the main thread.
-#[cfg(not(windows))]
-pub fn eager_read<T>(resource: Resource, buf: T) -> EagerRead<Resource, T>
-where
-  T: AsMut<[u8]>,
-{
+#[cfg(unix)]
+pub fn eager_read<T: AsMut<[u8]>>(
+  resource: Resource,
+  buf: T,
+) -> EagerRead<Resource, T> {
   let mut table = RESOURCE_TABLE.lock().unwrap();
   let maybe_repr = table.get_mut(&resource.rid);
   match maybe_repr {
     None => panic!("bad rid"),
     Some(repr) => match repr {
       Repr::TcpStream(ref mut tcp_stream) => {
-        eager_read_tcp(tcp_stream, resource, buf)
+        eager::tcp_read(tcp_stream, resource, buf)
       }
       _ => Either::A(tokio_io::io::read(resource, buf)),
     },
   }
 }
 
-type EagerWrite<R, T> =
-  Either<tokio_write::Write<R, T>, FutureResult<(R, T, usize), std::io::Error>>;
-
-#[cfg(windows)]
-pub fn eager_write<T>(resource: Resource, buf: T) -> EagerWrite<Resource, T>
-where
-  T: AsRef<[u8]>,
-{
-  Either::A(tokio_write::write(resource, buf)).into()
-}
-
-#[cfg(not(windows))]
-fn eager_write_tcp<T: AsRef<[u8]>>(
-  tcp_stream: &TcpStream,
+// This is an optimization that Tokio should do.
+// Attempt to call write() on the main thread.
+#[cfg(unix)]
+pub fn eager_write<T: AsRef<[u8]>>(
   resource: Resource,
   buf: T,
 ) -> EagerWrite<Resource, T> {
-  let fd = (*tcp_stream).as_raw_fd();
-  let mut std_tcp_stream = unsafe { std::net::TcpStream::from_raw_fd(fd) };
-  let write_result = std_tcp_stream.write(buf.as_ref());
-  // std_tcp_stream will close when it gets dropped. Thus...
-  let _ = std_tcp_stream.into_raw_fd();
-  match write_result {
-    Ok(nwrite) => Either::B(futures::future::ok((resource, buf, nwrite))),
-    Err(err) => {
-      if err.kind() == std::io::ErrorKind::WouldBlock {
-        Either::A(tokio_write::write(resource, buf))
-      } else {
-        Either::B(futures::future::err(err))
-      }
-    }
-  }
-}
-
-// This is an optimization that Tokio should do.
-// Attempt to call write() on the main thread.
-#[cfg(not(windows))]
-pub fn eager_write<T>(resource: Resource, buf: T) -> EagerWrite<Resource, T>
-where
-  T: AsRef<[u8]>,
-{
   let mut table = RESOURCE_TABLE.lock().unwrap();
   let maybe_repr = table.get_mut(&resource.rid);
   match maybe_repr {
     None => panic!("bad rid"),
     Some(repr) => match repr {
       Repr::TcpStream(ref mut tcp_stream) => {
-        eager_write_tcp(tcp_stream, resource, buf)
+        eager::tcp_write(tcp_stream, resource, buf)
       }
       _ => Either::A(tokio_write::write(resource, buf)),
     },
   }
 }
 
-type EagerAccept = Either<
-  tokio_util::Accept,
-  FutureResult<(TcpStream, SocketAddr), std::io::Error>,
->;
-
-#[cfg(windows)]
-pub fn eager_accept(resource: Resource) -> EagerAccept {
-  Either::A(tokio_util::accept(resource)).into()
-}
-
-#[cfg(not(windows))]
-fn eager_accept_tcp(
-  tcp_listener: &tokio::net::TcpListener,
-  resource: Resource,
-) -> EagerAccept {
-  let fd = (*tcp_listener).as_raw_fd();
-  let std_listener = unsafe { std::net::TcpListener::from_raw_fd(fd) };
-  let result = std_listener.accept();
-  // std_listener will close when it gets dropped. Thus...
-  let _ = std_listener.into_raw_fd();
-  match result {
-    Ok((std_stream, addr)) => {
-      let result = tokio::net::TcpStream::from_std(
-        std_stream,
-        &tokio::reactor::Handle::default(),
-      );
-      let tokio_stream = result.unwrap();
-      Either::B(futures::future::ok((tokio_stream, addr)))
-    }
-    Err(err) => {
-      if err.kind() == std::io::ErrorKind::WouldBlock {
-        Either::A(tokio_util::accept(resource))
-      } else {
-        Either::B(futures::future::err(err))
-      }
-    }
-  }
-}
-
-// This is an optimization that Tokio should do.
-// Attempt to call write() on the main thread.
-#[cfg(not(windows))]
+#[cfg(unix)]
 pub fn eager_accept(resource: Resource) -> EagerAccept {
   let mut table = RESOURCE_TABLE.lock().unwrap();
   let maybe_repr = table.get_mut(&resource.rid);
@@ -356,7 +275,7 @@ pub fn eager_accept(resource: Resource) -> EagerAccept {
     None => panic!("bad rid"),
     Some(repr) => match repr {
       Repr::TcpListener(ref mut tcp_listener) => {
-        eager_accept_tcp(tcp_listener, resource)
+        eager::tcp_accept(tcp_listener, resource)
       }
       _ => Either::A(tokio_util::accept(resource)),
     },