1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33

use std::io::{self, ErrorKind, Write};
use std::sync::{Arc, Mutex};

pub struct SynchronizedWriter<W: Write> {
    inner: Arc<Mutex<W>>,
}

impl<W: Write> SynchronizedWriter<W> {
    #[inline]
    pub fn new(writer: Arc<Mutex<W>>) -> SynchronizedWriter<W> {
        SynchronizedWriter {
            inner: writer,
        }
    }
}

impl<W: Write> Write for SynchronizedWriter<W> {
    #[inline]
    fn write(&mut self, buf: &[u8]) -> Result<usize, io::Error> {
        self.inner
            .lock()
            .map_err(|err| io::Error::new(ErrorKind::WouldBlock, err.to_string()))?
            .write(buf)
    }

    #[inline]
    fn flush(&mut self) -> Result<(), io::Error> {
        self.inner
            .lock()
            .map_err(|err| io::Error::new(ErrorKind::WouldBlock, err.to_string()))?
            .flush()
    }
}