Struct vmap::io::BufWriter

pub struct BufWriter<W: Write> { /* fields omitted */ }

The BufWriter adds buffering to any writer using a specialized buffer.

This is very similar std::io::BufWriter, but it uses a Ring for internal the buffer.

Examples

use vmap::io::{BufReader, BufWriter};

let recv = TcpStream::connect(srv.local_addr().unwrap())?;
let send = /* accepted socked */

let mut wr = BufWriter::new(send, 4000).unwrap();
wr.write_all(b"hello\nworld\n")?;
wr.flush()?;

let mut rd = BufReader::new(recv, 4000).unwrap();
let mut line = String::new();
let len = rd.read_line(&mut line)?;
assert_eq!(line, "hello\n");

Implementations

impl<W: Write> BufWriter<W>

pub fn new(inner: W, capacity: usize) -> Result<Self>

Creates a new BufWriter.

pub fn get_ref(&self) -> &W

Gets a reference to the underlying writer.

pub fn get_mut(&mut self) -> &mut W

Gets a mutable reference to the underlying writer.

pub fn into_inner(self) -> Result<W>

Unwraps this BufWriter, returning the underlying writer.

Trait Implementations

impl<W: Write> Drop for BufWriter<W>

fn drop(&mut self)

Executes the destructor for this type.

impl<W: Write> Write for BufWriter<W>

fn write(&mut self, buf: &[u8]) -> Result<usize>

Write a buffer into this writer, returning how many bytes were written.

fn flush(&mut self) -> Result<()>

Flush this output stream, ensuring that all intermediately buffered contents reach their destination.

pub fn write_vectored(&mut self, bufs: &[IoSlice<'_>]) -> Result<usize, Error>

Like write, except that it writes from a slice of buffers.

pub fn is_write_vectored(&self) -> bool

🔬 This is a nightly-only experimental API. (can_vector)

Determines if this Writer has an efficient write_vectored implementation.

pub fn write_all(&mut self, buf: &[u8]) -> Result<(), Error>

Attempts to write an entire buffer into this writer.

pub fn write_all_vectored(
    &mut self,
    bufs: &mut [IoSlice<'_>]
) -> Result<(), Error>

🔬 This is a nightly-only experimental API. (write_all_vectored)

Attempts to write multiple buffers into this writer.

pub fn write_fmt(&mut self, fmt: Arguments<'_>) -> Result<(), Error>

Writes a formatted string into this writer, returning any error encountered.

pub fn by_ref(&mut self) -> &mut Self

Creates a "by reference" adaptor for this instance of Write.