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use std::fs::File; | |
use std::io::{self, Seek, SeekFrom}; | |
use std::time::Duration; | |
use std::os::unix::io::{AsRawFd, FromRawFd, RawFd}; | |
use mio; | |
use mio::unix::{EventedFd, UnixReady}; | |
use nix::poll::{self, PollFd, EventFlags}; | |
use libc::c_int; | |
use super::*; | |
use inotify; | |
use logger; | |
pub struct FileWatcher { | |
inotify: inotify::Inotify, | |
poll: mio::Poll, | |
events: mio::Events, | |
} | |
impl FileWatcher { | |
pub fn new(file_path: &str) -> io::Result<Self> { | |
let mut inotify = inotify::Inotify::init()?; | |
inotify.add_watch(file_path, inotify::WatchMask::MODIFY)?; | |
let poll = mio::Poll::new()?; | |
let events = mio::Events::with_capacity(1024); | |
logger::log(&format!("ino:fd={}", inotify.as_raw_fd())); | |
poll.register( | |
&EventedFd(&inotify.as_raw_fd()), | |
mio::Token(0), | |
mio::Ready::readable(), | |
mio::PollOpt::edge(), | |
).unwrap(); | |
Ok( Self { inotify, poll, events } ) | |
} | |
} | |
impl FileWatch for FileWatcher { | |
fn block(&mut self, timeout: Option<Duration>) -> io::Result<Option<bool>> { | |
self.poll.poll(&mut self.events, timeout)?; | |
Ok( | |
if self.events.is_empty() { | |
logger::log("inotify:timeout"); | |
None | |
} else { | |
static token_id: usize = 0; | |
let evt = &self.events.iter().next(); | |
let mut buf = [0u8; 1024]; | |
self.inotify.read_events(&mut buf)?; | |
// self.poll.register( | |
// &EventedFd(&self.inotify.as_raw_fd()), | |
// mio::Token(if token_id == 0 { 1 } else { 0 }), | |
// mio::Ready::readable(), | |
// mio::PollOpt::edge(), | |
// ).unwrap(); | |
if let Some(e) = evt { | |
logger::log("inotify:some"); | |
Some(UnixReady::from(e.readiness()).is_hup()) | |
} else { | |
logger::log("inotify:none"); | |
None | |
} | |
} | |
) | |
} | |
} | |
pub struct StdinWatcher { | |
poll: mio::Poll, | |
events: mio::Events, | |
} | |
impl StdinWatcher { | |
pub fn new(fd: RawFd) -> io::Result<Self> { | |
let poll = mio::Poll::new()?; | |
let events = mio::Events::with_capacity(1024); | |
poll.register( | |
&EventedFd(&fd), | |
mio::Token(0), | |
mio::Ready::readable(), | |
mio::PollOpt::edge(), | |
)?; | |
Ok( Self{ poll, events } ) | |
} | |
} | |
impl FileWatch for StdinWatcher { | |
fn block(&mut self, timeout: Option<Duration>) -> io::Result<Option<bool>> { | |
self.poll.poll(&mut self.events, timeout)?; | |
Ok( | |
if self.events.is_empty() { | |
None | |
} else { | |
let evt = &self.events.iter().next(); | |
if let Some(e) = evt { | |
Some(UnixReady::from(e.readiness()).is_hup()) | |
} else { | |
None | |
} | |
} | |
) | |
} | |
} |
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