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| 1 | +use std::io; |
| 2 | +#[cfg(unix)] |
| 3 | +use std::os::fd::{FromRawFd, RawFd}; |
| 4 | +#[cfg(windows)] |
| 5 | +use std::os::windows::io::{ |
| 6 | + AsRawHandle, AsRawSocket, FromRawHandle, FromRawSocket, RawHandle, RawSocket, |
| 7 | +}; |
| 8 | + |
| 9 | +use compio_buf::{BufResult, IntoInner, IoBuf, IoBufMut}; |
| 10 | +use compio_driver::{ |
| 11 | + op::{BufResultExt, Recv, Send}, |
| 12 | + AsRawFd, SharedFd, ToSharedFd, |
| 13 | +}; |
| 14 | +use compio_io::{AsyncRead, AsyncWrite}; |
| 15 | +use compio_runtime::{Attacher, Runtime}; |
| 16 | + |
| 17 | +/// A wrapper for IO source, providing implementations for [`AsyncRead`] and |
| 18 | +/// [`AsyncWrite`]. |
| 19 | +#[derive(Debug)] |
| 20 | +pub struct AsyncFd<T: AsRawFd> { |
| 21 | + inner: Attacher<T>, |
| 22 | +} |
| 23 | + |
| 24 | +impl<T: AsRawFd> AsyncFd<T> { |
| 25 | + /// Create [`AsyncFd`] and attach the source to the current runtime. |
| 26 | + pub fn new(source: T) -> io::Result<Self> { |
| 27 | + Ok(Self { |
| 28 | + inner: Attacher::new(source)?, |
| 29 | + }) |
| 30 | + } |
| 31 | + |
| 32 | + /// Create [`AsyncFd`] without attaching the source. |
| 33 | + /// |
| 34 | + /// # Safety |
| 35 | + /// |
| 36 | + /// The user should handle the attachment correctly. |
| 37 | + pub unsafe fn new_unchecked(source: T) -> Self { |
| 38 | + Self { |
| 39 | + inner: Attacher::new_unchecked(source), |
| 40 | + } |
| 41 | + } |
| 42 | +} |
| 43 | + |
| 44 | +impl<T: AsRawFd + 'static> AsyncRead for AsyncFd<T> { |
| 45 | + #[inline] |
| 46 | + async fn read<B: IoBufMut>(&mut self, buf: B) -> BufResult<usize, B> { |
| 47 | + (&*self).read(buf).await |
| 48 | + } |
| 49 | +} |
| 50 | + |
| 51 | +impl<T: AsRawFd + 'static> AsyncRead for &AsyncFd<T> { |
| 52 | + async fn read<B: IoBufMut>(&mut self, buf: B) -> BufResult<usize, B> { |
| 53 | + let fd = self.inner.to_shared_fd(); |
| 54 | + let op = Recv::new(fd, buf); |
| 55 | + Runtime::current() |
| 56 | + .submit(op) |
| 57 | + .await |
| 58 | + .into_inner() |
| 59 | + .map_advanced() |
| 60 | + } |
| 61 | +} |
| 62 | + |
| 63 | +impl<T: AsRawFd + 'static> AsyncWrite for AsyncFd<T> { |
| 64 | + #[inline] |
| 65 | + async fn write<B: IoBuf>(&mut self, buf: B) -> BufResult<usize, B> { |
| 66 | + (&*self).write(buf).await |
| 67 | + } |
| 68 | + |
| 69 | + #[inline] |
| 70 | + async fn flush(&mut self) -> io::Result<()> { |
| 71 | + (&*self).flush().await |
| 72 | + } |
| 73 | + |
| 74 | + #[inline] |
| 75 | + async fn shutdown(&mut self) -> io::Result<()> { |
| 76 | + (&*self).shutdown().await |
| 77 | + } |
| 78 | +} |
| 79 | + |
| 80 | +impl<T: AsRawFd + 'static> AsyncWrite for &AsyncFd<T> { |
| 81 | + async fn write<B: IoBuf>(&mut self, buf: B) -> BufResult<usize, B> { |
| 82 | + let fd = self.inner.to_shared_fd(); |
| 83 | + let op = Send::new(fd, buf); |
| 84 | + Runtime::current().submit(op).await.into_inner() |
| 85 | + } |
| 86 | + |
| 87 | + async fn flush(&mut self) -> io::Result<()> { |
| 88 | + Ok(()) |
| 89 | + } |
| 90 | + |
| 91 | + async fn shutdown(&mut self) -> io::Result<()> { |
| 92 | + Ok(()) |
| 93 | + } |
| 94 | +} |
| 95 | + |
| 96 | +impl<T: AsRawFd> IntoInner for AsyncFd<T> { |
| 97 | + type Inner = SharedFd<T>; |
| 98 | + |
| 99 | + fn into_inner(self) -> Self::Inner { |
| 100 | + self.inner.into_inner() |
| 101 | + } |
| 102 | +} |
| 103 | + |
| 104 | +impl<T: AsRawFd> AsRawFd for AsyncFd<T> { |
| 105 | + fn as_raw_fd(&self) -> compio_driver::RawFd { |
| 106 | + self.inner.as_raw_fd() |
| 107 | + } |
| 108 | +} |
| 109 | + |
| 110 | +#[cfg(windows)] |
| 111 | +impl<T: AsRawFd + AsRawHandle> AsRawHandle for AsyncFd<T> { |
| 112 | + fn as_raw_handle(&self) -> RawHandle { |
| 113 | + self.inner.as_raw_handle() |
| 114 | + } |
| 115 | +} |
| 116 | + |
| 117 | +#[cfg(windows)] |
| 118 | +impl<T: AsRawFd + AsRawSocket> AsRawSocket for AsyncFd<T> { |
| 119 | + fn as_raw_socket(&self) -> RawSocket { |
| 120 | + self.inner.as_raw_socket() |
| 121 | + } |
| 122 | +} |
| 123 | + |
| 124 | +impl<T: AsRawFd> ToSharedFd<T> for AsyncFd<T> { |
| 125 | + fn to_shared_fd(&self) -> SharedFd<T> { |
| 126 | + self.inner.to_shared_fd() |
| 127 | + } |
| 128 | +} |
| 129 | + |
| 130 | +impl<T: AsRawFd> Clone for AsyncFd<T> { |
| 131 | + fn clone(&self) -> Self { |
| 132 | + Self { |
| 133 | + inner: self.inner.clone(), |
| 134 | + } |
| 135 | + } |
| 136 | +} |
| 137 | + |
| 138 | +#[cfg(unix)] |
| 139 | +impl<T: AsRawFd + FromRawFd> FromRawFd for AsyncFd<T> { |
| 140 | + unsafe fn from_raw_fd(fd: RawFd) -> Self { |
| 141 | + Self::new_unchecked(FromRawFd::from_raw_fd(fd)) |
| 142 | + } |
| 143 | +} |
| 144 | + |
| 145 | +#[cfg(windows)] |
| 146 | +impl<T: AsRawFd + FromRawHandle> FromRawHandle for AsyncFd<T> { |
| 147 | + unsafe fn from_raw_handle(handle: RawHandle) -> Self { |
| 148 | + Self::new_unchecked(FromRawHandle::from_raw_handle(handle)) |
| 149 | + } |
| 150 | +} |
| 151 | + |
| 152 | +#[cfg(windows)] |
| 153 | +impl<T: AsRawFd + FromRawSocket> FromRawSocket for AsyncFd<T> { |
| 154 | + unsafe fn from_raw_socket(sock: RawSocket) -> Self { |
| 155 | + Self::new_unchecked(FromRawSocket::from_raw_socket(sock)) |
| 156 | + } |
| 157 | +} |
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