Struct virtual_fs::zero_file::ZeroFile
source · pub struct ZeroFile {}Trait Implementations§
source§impl AsyncWrite for ZeroFile
impl AsyncWrite for ZeroFile
source§fn poll_write(
self: Pin<&mut Self>,
_cx: &mut Context<'_>,
buf: &[u8]
) -> Poll<Result<usize>>
fn poll_write( self: Pin<&mut Self>, _cx: &mut Context<'_>, buf: &[u8] ) -> Poll<Result<usize>>
Attempt to write bytes from
buf into the object. Read moresource§fn poll_flush(self: Pin<&mut Self>, _cx: &mut Context<'_>) -> Poll<Result<()>>
fn poll_flush(self: Pin<&mut Self>, _cx: &mut Context<'_>) -> Poll<Result<()>>
Attempts to flush the object, ensuring that any buffered data reach
their destination. Read more
source§fn poll_shutdown(
self: Pin<&mut Self>,
_cx: &mut Context<'_>
) -> Poll<Result<()>>
fn poll_shutdown( self: Pin<&mut Self>, _cx: &mut Context<'_> ) -> Poll<Result<()>>
Initiates or attempts to shut down this writer, returning success when
the I/O connection has completely shut down. Read more
source§fn poll_write_vectored(
self: Pin<&mut Self>,
_cx: &mut Context<'_>,
bufs: &[IoSlice<'_>]
) -> Poll<Result<usize>>
fn poll_write_vectored( self: Pin<&mut Self>, _cx: &mut Context<'_>, bufs: &[IoSlice<'_>] ) -> Poll<Result<usize>>
Like
poll_write, except that it writes from a slice of buffers. Read moresource§fn is_write_vectored(&self) -> bool
fn is_write_vectored(&self) -> bool
Determines if this writer has an efficient
poll_write_vectored
implementation. Read moresource§impl VirtualFile for ZeroFile
impl VirtualFile for ZeroFile
source§fn last_accessed(&self) -> u64
fn last_accessed(&self) -> u64
the last time the file was accessed in nanoseconds as a UNIX timestamp
source§fn last_modified(&self) -> u64
fn last_modified(&self) -> u64
the last time the file was modified in nanoseconds as a UNIX timestamp
source§fn created_time(&self) -> u64
fn created_time(&self) -> u64
the time at which the file was created in nanoseconds as a UNIX timestamp
source§fn set_len(&mut self, _new_size: u64) -> Result<()>
fn set_len(&mut self, _new_size: u64) -> Result<()>
Change the size of the file, if the
new_size is greater than the current size
the extra bytes will be allocated and zeroedsource§fn poll_read_ready(
self: Pin<&mut Self>,
_cx: &mut Context<'_>
) -> Poll<Result<usize>>
fn poll_read_ready( self: Pin<&mut Self>, _cx: &mut Context<'_> ) -> Poll<Result<usize>>
Polls the file for when there is data to be read
source§fn poll_write_ready(
self: Pin<&mut Self>,
_cx: &mut Context<'_>
) -> Poll<Result<usize>>
fn poll_write_ready( self: Pin<&mut Self>, _cx: &mut Context<'_> ) -> Poll<Result<usize>>
Polls the file for when it is available for writing
source§fn is_open(&self) -> bool
fn is_open(&self) -> bool
Indicates if the file is opened or closed. This function must not block
Defaults to a status of being constantly open
source§fn get_special_fd(&self) -> Option<u32>
fn get_special_fd(&self) -> Option<u32>
Used for “special” files such as
stdin, stdout and stderr.
Always returns the same file descriptor (0, 1 or 2). Returns None
on normal filesAuto Trait Implementations§
impl RefUnwindSafe for ZeroFile
impl Send for ZeroFile
impl Sync for ZeroFile
impl Unpin for ZeroFile
impl UnwindSafe for ZeroFile
Blanket Implementations§
source§impl<R> AsyncReadExt for Rwhere
R: AsyncRead + ?Sized,
impl<R> AsyncReadExt for Rwhere R: AsyncRead + ?Sized,
source§fn read<'a>(&'a mut self, buf: &'a mut [u8]) -> Read<'a, Self>where
Self: Unpin,
fn read<'a>(&'a mut self, buf: &'a mut [u8]) -> Read<'a, Self>where Self: Unpin,
Pulls some bytes from this source into the specified buffer,
returning how many bytes were read. Read more
source§fn read_buf<B, 'a>(&'a mut self, buf: &'a mut B) -> ReadBuf<'a, Self, B>where
Self: Sized + Unpin,
B: BufMut,
fn read_buf<B, 'a>(&'a mut self, buf: &'a mut B) -> ReadBuf<'a, Self, B>where Self: Sized + Unpin, B: BufMut,
Pulls some bytes from this source into the specified buffer,
advancing the buffer’s internal cursor. Read more
source§fn read_exact<'a>(&'a mut self, buf: &'a mut [u8]) -> ReadExact<'a, Self>where
Self: Unpin,
fn read_exact<'a>(&'a mut self, buf: &'a mut [u8]) -> ReadExact<'a, Self>where Self: Unpin,
Reads the exact number of bytes required to fill
buf. Read moresource§fn read_u8<'a>(&'a mut self) -> ReadU8<&'a mut Self>where
Self: Unpin,
fn read_u8<'a>(&'a mut self) -> ReadU8<&'a mut Self>where Self: Unpin,
Reads an unsigned 8 bit integer from the underlying reader. Read more
source§fn read_i8<'a>(&'a mut self) -> ReadI8<&'a mut Self>where
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fn read_i8<'a>(&'a mut self) -> ReadI8<&'a mut Self>where Self: Unpin,
Reads a signed 8 bit integer from the underlying reader. Read more
source§fn read_u16<'a>(&'a mut self) -> ReadU16<&'a mut Self>where
Self: Unpin,
fn read_u16<'a>(&'a mut self) -> ReadU16<&'a mut Self>where Self: Unpin,
Reads an unsigned 16-bit integer in big-endian order from the
underlying reader. Read more
source§fn read_i16<'a>(&'a mut self) -> ReadI16<&'a mut Self>where
Self: Unpin,
fn read_i16<'a>(&'a mut self) -> ReadI16<&'a mut Self>where Self: Unpin,
Reads a signed 16-bit integer in big-endian order from the
underlying reader. Read more
source§fn read_u32<'a>(&'a mut self) -> ReadU32<&'a mut Self>where
Self: Unpin,
fn read_u32<'a>(&'a mut self) -> ReadU32<&'a mut Self>where Self: Unpin,
Reads an unsigned 32-bit integer in big-endian order from the
underlying reader. Read more
source§fn read_i32<'a>(&'a mut self) -> ReadI32<&'a mut Self>where
Self: Unpin,
fn read_i32<'a>(&'a mut self) -> ReadI32<&'a mut Self>where Self: Unpin,
Reads a signed 32-bit integer in big-endian order from the
underlying reader. Read more
source§fn read_u64<'a>(&'a mut self) -> ReadU64<&'a mut Self>where
Self: Unpin,
fn read_u64<'a>(&'a mut self) -> ReadU64<&'a mut Self>where Self: Unpin,
Reads an unsigned 64-bit integer in big-endian order from the
underlying reader. Read more
source§fn read_i64<'a>(&'a mut self) -> ReadI64<&'a mut Self>where
Self: Unpin,
fn read_i64<'a>(&'a mut self) -> ReadI64<&'a mut Self>where Self: Unpin,
Reads an signed 64-bit integer in big-endian order from the
underlying reader. Read more
source§fn read_u128<'a>(&'a mut self) -> ReadU128<&'a mut Self>where
Self: Unpin,
fn read_u128<'a>(&'a mut self) -> ReadU128<&'a mut Self>where Self: Unpin,
Reads an unsigned 128-bit integer in big-endian order from the
underlying reader. Read more
source§fn read_i128<'a>(&'a mut self) -> ReadI128<&'a mut Self>where
Self: Unpin,
fn read_i128<'a>(&'a mut self) -> ReadI128<&'a mut Self>where Self: Unpin,
Reads an signed 128-bit integer in big-endian order from the
underlying reader. Read more
source§fn read_f32<'a>(&'a mut self) -> ReadF32<&'a mut Self>where
Self: Unpin,
fn read_f32<'a>(&'a mut self) -> ReadF32<&'a mut Self>where Self: Unpin,
Reads an 32-bit floating point type in big-endian order from the
underlying reader. Read more
source§fn read_f64<'a>(&'a mut self) -> ReadF64<&'a mut Self>where
Self: Unpin,
fn read_f64<'a>(&'a mut self) -> ReadF64<&'a mut Self>where Self: Unpin,
Reads an 64-bit floating point type in big-endian order from the
underlying reader. Read more
source§fn read_u16_le<'a>(&'a mut self) -> ReadU16Le<&'a mut Self>where
Self: Unpin,
fn read_u16_le<'a>(&'a mut self) -> ReadU16Le<&'a mut Self>where Self: Unpin,
Reads an unsigned 16-bit integer in little-endian order from the
underlying reader. Read more
source§fn read_i16_le<'a>(&'a mut self) -> ReadI16Le<&'a mut Self>where
Self: Unpin,
fn read_i16_le<'a>(&'a mut self) -> ReadI16Le<&'a mut Self>where Self: Unpin,
Reads a signed 16-bit integer in little-endian order from the
underlying reader. Read more
source§fn read_u32_le<'a>(&'a mut self) -> ReadU32Le<&'a mut Self>where
Self: Unpin,
fn read_u32_le<'a>(&'a mut self) -> ReadU32Le<&'a mut Self>where Self: Unpin,
Reads an unsigned 32-bit integer in little-endian order from the
underlying reader. Read more
source§fn read_i32_le<'a>(&'a mut self) -> ReadI32Le<&'a mut Self>where
Self: Unpin,
fn read_i32_le<'a>(&'a mut self) -> ReadI32Le<&'a mut Self>where Self: Unpin,
Reads a signed 32-bit integer in little-endian order from the
underlying reader. Read more
source§fn read_u64_le<'a>(&'a mut self) -> ReadU64Le<&'a mut Self>where
Self: Unpin,
fn read_u64_le<'a>(&'a mut self) -> ReadU64Le<&'a mut Self>where Self: Unpin,
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source§fn read_i64_le<'a>(&'a mut self) -> ReadI64Le<&'a mut Self>where
Self: Unpin,
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source§fn read_u128_le<'a>(&'a mut self) -> ReadU128Le<&'a mut Self>where
Self: Unpin,
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source§fn read_i128_le<'a>(&'a mut self) -> ReadI128Le<&'a mut Self>where
Self: Unpin,
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source§fn read_f32_le<'a>(&'a mut self) -> ReadF32Le<&'a mut Self>where
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source§fn read_f64_le<'a>(&'a mut self) -> ReadF64Le<&'a mut Self>where
Self: Unpin,
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source§fn read_to_end<'a>(
&'a mut self,
buf: &'a mut Vec<u8, Global>
) -> ReadToEnd<'a, Self>where
Self: Unpin,
fn read_to_end<'a>( &'a mut self, buf: &'a mut Vec<u8, Global> ) -> ReadToEnd<'a, Self>where Self: Unpin,
Reads all bytes until EOF in this source, placing them into
buf. Read moresource§impl<S> AsyncSeekExt for Swhere
S: AsyncSeek + ?Sized,
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source§fn seek(&mut self, pos: SeekFrom) -> Seek<'_, Self>where
Self: Unpin,
fn seek(&mut self, pos: SeekFrom) -> Seek<'_, Self>where Self: Unpin,
Creates a future which will seek an IO object, and then yield the
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source§fn rewind(&mut self) -> Seek<'_, Self>where
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source§fn stream_position(&mut self) -> Seek<'_, Self>where
Self: Unpin,
fn stream_position(&mut self) -> Seek<'_, Self>where Self: Unpin,
Creates a future which will return the current seek position from the
start of the stream. Read more
source§impl<W> AsyncWriteExt for Wwhere
W: AsyncWrite + ?Sized,
impl<W> AsyncWriteExt for Wwhere W: AsyncWrite + ?Sized,
source§fn write<'a>(&'a mut self, src: &'a [u8]) -> Write<'a, Self>where
Self: Unpin,
fn write<'a>(&'a mut self, src: &'a [u8]) -> Write<'a, Self>where Self: Unpin,
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source§fn write_vectored<'a, 'b>(
&'a mut self,
bufs: &'a [IoSlice<'b>]
) -> WriteVectored<'a, 'b, Self>where
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source§fn write_buf<B, 'a>(&'a mut self, src: &'a mut B) -> WriteBuf<'a, Self, B>where
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source§fn write_all_buf<B, 'a>(
&'a mut self,
src: &'a mut B
) -> WriteAllBuf<'a, Self, B>where
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source§fn write_u8<'a>(&'a mut self, n: u8) -> WriteU8<&'a mut Self>where
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source§fn write_u16<'a>(&'a mut self, n: u16) -> WriteU16<&'a mut Self>where
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source§fn write_i32<'a>(&'a mut self, n: i32) -> WriteI32<&'a mut Self>where
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source§fn write_u64<'a>(&'a mut self, n: u64) -> WriteU64<&'a mut Self>where
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Writes a signed 32-bit integer in little-endian order to the
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