refactor: remove "ext/flash" (#18578)

With https://github.com/denoland/deno/pull/18568 landed we no longer
need "ext/flash". 

This commit removes "deno_flash" extension completely.

This should have some impact on the binary and snapshot size.

Closes https://github.com/denoland/deno/issues/17356

1 files changed, 0 insertions, 82 deletions

diff --git a/ext/flash/sendfile.rs b/ext/flash/sendfile.rs
deleted file mode 100644
index 18dc3a39d..000000000
--- a/ext/flash/sendfile.rs
+++ /dev/null
@@ -1,82 +0,0 @@
-// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
-// Forked from https://github.com/Thomasdezeeuw/sendfile/blob/024f82cd4dede9048392a5bd6d8afcd4d5aa83d5/src/lib.rs
-
-use std::future::Future;
-use std::io;
-use std::os::unix::io::RawFd;
-use std::pin::Pin;
-use std::task::Poll;
-use std::task::{self};
-
-pub struct SendFile {
-  pub io: (RawFd, RawFd),
-  pub written: usize,
-}
-
-impl SendFile {
-  #[inline]
-  pub fn try_send(&mut self) -> Result<usize, std::io::Error> {
-    #[cfg(target_os = "linux")]
-    {
-      // This is the maximum the Linux kernel will write in a single call.
-      let count = 0x7ffff000;
-      let mut offset = self.written as libc::off_t;
-
-      let res =
-        // SAFETY: call to libc::sendfile()
-        unsafe { libc::sendfile(self.io.1, self.io.0, &mut offset, count) };
-      if res == -1 {
-        Err(io::Error::last_os_error())
-      } else {
-        self.written = offset as usize;
-        Ok(res as usize)
-      }
-    }
-    #[cfg(target_os = "macos")]
-    {
-      // Send all bytes.
-      let mut length = 0;
-      // On macOS `length` is value-result parameter. It determines the number
-      // of bytes to write and returns the number of bytes written also in
-      // case of `EAGAIN` errors.
-      // SAFETY: call to libc::sendfile()
-      let res = unsafe {
-        libc::sendfile(
-          self.io.0,
-          self.io.1,
-          self.written as libc::off_t,
-          &mut length,
-          std::ptr::null_mut(),
-          0,
-        )
-      };
-      self.written += length as usize;
-      if res == -1 {
-        Err(io::Error::last_os_error())
-      } else {
-        Ok(length as usize)
-      }
-    }
-  }
-}
-
-impl Future for SendFile {
-  type Output = Result<(), std::io::Error>;
-
-  fn poll(
-    mut self: Pin<&mut Self>,
-    _: &mut task::Context<'_>,
-  ) -> Poll<Self::Output> {
-    loop {
-      match self.try_send() {
-        Ok(0) => break Poll::Ready(Ok(())),
-        Ok(_) => continue,
-        Err(ref err) if err.kind() == io::ErrorKind::WouldBlock => {
-          break Poll::Pending
-        }
-        Err(ref err) if err.kind() == io::ErrorKind::Interrupted => continue, // Try again.
-        Err(err) => break Poll::Ready(Err(err)),
-      }
-    }
-  }
-}