Rollup merge of #115489 - saethlin:is-interrupted, r=thomcc

Use std::io::Error::is_interrupted everywhere

In https://github.com/rust-lang/rust/pull/115228 I introduced this helper and started using it, this PR uses it to replace all applicable uses of `std::io::Error::kind`. The justification is the same; for whatever reason LLVM totally flops optimizing `Error::kind` so it's nice to use it less.

FYI ``@mkroening`` I swear the hermit changes look good, but I was so sure about the previous PR.

library/std/src/io/buffered/bufwriter.rs

@@ -237,7 +237,7 @@ impl<W: ?Sized + Write> BufWriter<W> {
                     ));
                 }
                 Ok(n) => guard.consume(n),
-                Err(ref e) if e.kind() == io::ErrorKind::Interrupted => {}
+                Err(ref e) if e.is_interrupted() => {}
                 Err(e) => return Err(e),
             }
         }

library/std/src/io/copy.rs

@@ -1,4 +1,4 @@
-use super::{BorrowedBuf, BufReader, BufWriter, ErrorKind, Read, Result, Write, DEFAULT_BUF_SIZE};
+use super::{BorrowedBuf, BufReader, BufWriter, Read, Result, Write, DEFAULT_BUF_SIZE};
 use crate::alloc::Allocator;
 use crate::cmp;
 use crate::collections::VecDeque;
@@ -30,6 +30,7 @@ mod tests;
 ///
 /// [`read`]: Read::read
 /// [`write`]: Write::write
+/// [`ErrorKind::Interrupted`]: crate::io::ErrorKind::Interrupted
 ///
 /// # Examples
 ///
@@ -163,7 +164,7 @@ where
             // from adding I: Read
             match self.read(&mut []) {
                 Ok(_) => {}
-                Err(e) if e.kind() == ErrorKind::Interrupted => continue,
+                Err(e) if e.is_interrupted() => continue,
                 Err(e) => return Err(e),
             }
             let buf = self.buffer();
@@ -243,7 +244,7 @@ impl<I: Write + ?Sized> BufferedWriterSpec for BufWriter<I> {
                         // Read again if the buffer still has enough capacity, as BufWriter itself would do
                         // This will occur if the reader returns short reads
                     }
-                    Err(ref e) if e.kind() == ErrorKind::Interrupted => {}
+                    Err(ref e) if e.is_interrupted() => {}
                     Err(e) => return Err(e),
                 }
             } else {
@@ -275,7 +276,7 @@ impl<A: Allocator> BufferedWriterSpec for Vec<u8, A> {
             let mut buf: BorrowedBuf<'_> = self.spare_capacity_mut().into();
             match reader.read_buf(buf.unfilled()) {
                 Ok(()) => {}
-                Err(e) if e.kind() == ErrorKind::Interrupted => continue,
+                Err(e) if e.is_interrupted() => continue,
                 Err(e) => return Err(e),
             };
 
@@ -307,7 +308,7 @@ fn stack_buffer_copy<R: Read + ?Sized, W: Write + ?Sized>(
     loop {
         match reader.read_buf(buf.unfilled()) {
             Ok(()) => {}
-            Err(e) if e.kind() == ErrorKind::Interrupted => continue,
+            Err(e) if e.is_interrupted() => continue,
             Err(e) => return Err(e),
         };
 

library/std/src/io/mod.rs

@@ -1647,7 +1647,7 @@ pub trait Write {
                     ));
                 }
                 Ok(n) => IoSlice::advance_slices(&mut bufs, n),
-                Err(ref e) if e.kind() == ErrorKind::Interrupted => {}
+                Err(ref e) if e.is_interrupted() => {}
                 Err(e) => return Err(e),
             }
         }

library/std/src/os/unix/fs.rs

@@ -123,7 +123,7 @@ pub trait FileExt {
                     buf = &mut tmp[n..];
                     offset += n as u64;
                 }
-                Err(ref e) if e.kind() == io::ErrorKind::Interrupted => {}
+                Err(ref e) if e.is_interrupted() => {}
                 Err(e) => return Err(e),
             }
         }
@@ -258,7 +258,7 @@ pub trait FileExt {
                     buf = &buf[n..];
                     offset += n as u64
                 }
-                Err(ref e) if e.kind() == io::ErrorKind::Interrupted => {}
+                Err(ref e) if e.is_interrupted() => {}
                 Err(e) => return Err(e),
             }
         }

library/std/src/os/wasi/fs.rs

@@ -82,7 +82,7 @@ pub trait FileExt {
                     buf = &mut tmp[n..];
                     offset += n as u64;
                 }
-                Err(ref e) if e.kind() == io::ErrorKind::Interrupted => {}
+                Err(ref e) if e.is_interrupted() => {}
                 Err(e) => return Err(e),
             }
         }
@@ -162,7 +162,7 @@ pub trait FileExt {
                     buf = &buf[n..];
                     offset += n as u64
                 }
-                Err(ref e) if e.kind() == io::ErrorKind::Interrupted => {}
+                Err(ref e) if e.is_interrupted() => {}
                 Err(e) => return Err(e),
             }
         }

library/std/src/sys/hermit/mod.rs

@@ -200,7 +200,7 @@ where
 {
     loop {
         match cvt(f()) {
-            Err(ref e) if e.kind() == ErrorKind::Interrupted => {}
+            Err(ref e) if e.is_interrupted() => {}
             other => return other,
         }
     }

library/std/src/sys/hermit/net.rs

@@ -102,7 +102,7 @@ impl Socket {
             match unsafe { netc::poll(&mut pollfd, 1, timeout) } {
                 -1 => {
                     let err = io::Error::last_os_error();
-                    if err.kind() != io::ErrorKind::Interrupted {
+                    if !err.is_interrupted() {
                         return Err(err);
                     }
                 }

library/std/src/sys/unix/fs.rs

@@ -792,7 +792,7 @@ impl Drop for Dir {
     fn drop(&mut self) {
         let r = unsafe { libc::closedir(self.0) };
         assert!(
-            r == 0 || crate::io::Error::last_os_error().kind() == crate::io::ErrorKind::Interrupted,
+            r == 0 || crate::io::Error::last_os_error().is_interrupted(),
             "unexpected error during closedir: {:?}",
             crate::io::Error::last_os_error()
         );

library/std/src/sys/unix/mod.rs

@@ -320,7 +320,7 @@ where
 {
     loop {
         match cvt(f()) {
-            Err(ref e) if e.kind() == ErrorKind::Interrupted => {}
+            Err(ref e) if e.is_interrupted() => {}
             other => return other,
         }
     }

library/std/src/sys/unix/net.rs

@@ -184,7 +184,7 @@ impl Socket {
             match unsafe { libc::poll(&mut pollfd, 1, timeout) } {
                 -1 => {
                     let err = io::Error::last_os_error();
-                    if err.kind() != io::ErrorKind::Interrupted {
+                    if !err.is_interrupted() {
                         return Err(err);
                     }
                 }

library/std/src/sys/unix/process/process_unix.rs

@@ -165,7 +165,7 @@ impl Command {
                     assert!(p.wait().is_ok(), "wait() should either return Ok or panic");
                     return Err(Error::from_raw_os_error(errno));
                 }
-                Err(ref e) if e.kind() == ErrorKind::Interrupted => {}
+                Err(ref e) if e.is_interrupted() => {}
                 Err(e) => {
                     assert!(p.wait().is_ok(), "wait() should either return Ok or panic");
                     panic!("the CLOEXEC pipe failed: {e:?}")