Fix unused code warnings

Co-authored-by: Thomas de Zeeuw <[email protected]>

Author: Berrysoft

src/sys/shell/selector.rs

@@ -21,7 +21,7 @@ impl Selector {
 }
 
 #[cfg(unix)]
-cfg_any_os_ext! {
+cfg_os_ext! {
     use crate::{Interest, Token};
 
     impl Selector {
@@ -40,7 +40,7 @@ cfg_any_os_ext! {
 }
 
 #[cfg(target_os = "wasi")]
-cfg_any_os_ext! {
+cfg_os_ext! {
     use crate::{Interest, Token};
 
     impl Selector {

src/sys/unix/mod.rs

@@ -108,6 +108,7 @@ cfg_os_poll! {
     // NOTE: the `Waker` type is expected in the selector module as the
     // `poll(2)` implementation needs to do some special stuff.
 
+    #[cfg(feature = "os-ext")]
     mod sourcefd;
     #[cfg(feature = "os-ext")]
     pub use self::sourcefd::SourceFd;
@@ -159,9 +160,8 @@ cfg_os_poll! {
 }
 
 cfg_not_os_poll! {
-    cfg_any_os_ext! {
+    cfg_os_ext! {
         mod sourcefd;
-        #[cfg(feature = "os-ext")]
         pub use self::sourcefd::SourceFd;
     }
 }

src/sys/unix/selector/epoll.rs

@@ -1,8 +1,12 @@
+use std::io;
 use std::os::fd::{AsRawFd, FromRawFd, OwnedFd, RawFd};
 #[cfg(debug_assertions)]
 use std::sync::atomic::{AtomicUsize, Ordering};
 use std::time::Duration;
-use std::{io, ptr};
+
+cfg_io_source! {
+    use std::ptr;
+}
 
 use libc::{EPOLLET, EPOLLIN, EPOLLOUT, EPOLLPRI, EPOLLRDHUP};
 
@@ -78,6 +82,7 @@ impl Selector {
         syscall!(epoll_ctl(ep, libc::EPOLL_CTL_ADD, fd, &mut event)).map(|_| ())
     }
 
+    cfg_io_source! {
     pub fn reregister(&self, fd: RawFd, token: Token, interests: Interest) -> io::Result<()> {
         let mut event = libc::epoll_event {
             events: interests_to_epoll(interests),
@@ -94,6 +99,7 @@ impl Selector {
         let ep = self.ep.as_raw_fd();
         syscall!(epoll_ctl(ep, libc::EPOLL_CTL_DEL, fd, ptr::null_mut())).map(|_| ())
     }
+    }
 }
 
 cfg_io_source! {