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initial Watcher impl

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Bernardo 2019-01-06 15:05:12 +01:00 committed by Aleksey Kladov
parent ac757e114e
commit 1d5eaefe8a
5 changed files with 414 additions and 28 deletions
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Cargo.lock generated
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@ -1645,11 +1872,16 @@ dependencies = [
"checksum idna 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "38f09e0f0b1fb55fdee1f17470ad800da77af5186a1a76c026b679358b7e844e"
"checksum im 12.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "0627d417829c1d763d602687634869f254fc79f7e22dea6c824dab993db857e4"
"checksum indexmap 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "7e81a7c05f79578dbc15793d8b619db9ba32b4577003ef3af1a91c416798c58d"
"checksum inotify 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)" = "40b54539f3910d6f84fbf9a643efd6e3aa6e4f001426c0329576128255994718"
"checksum inotify-sys 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)" = "e74a1aa87c59aeff6ef2cc2fa62d41bc43f54952f55652656b18a02fd5e356c0"
"checksum insta 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)" = "6ff57d9cbc4664b54a972c321155c7703794bc0f5c9944f29c36f40d10d626f3"
"checksum iovec 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "dbe6e417e7d0975db6512b90796e8ce223145ac4e33c377e4a42882a0e88bb08"
"checksum itertools 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)" = "5b8467d9c1cebe26feb08c640139247fac215782d35371ade9a2136ed6085358"
"checksum itoa 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)" = "1306f3464951f30e30d12373d31c79fbd52d236e5e896fd92f96ec7babbbe60b"
"checksum join_to_string 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)" = "4dc7a5290e8c2606ce2be49f456d50f69173cb96d1541e4f66e34ac8b331a98f"
"checksum kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "7507624b29483431c0ba2d82aece8ca6cdba9382bff4ddd0f7490560c056098d"
"checksum lazy_static 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "a374c89b9db55895453a74c1e38861d9deec0b01b405a82516e9d5de4820dea1"
"checksum lazycell 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "b294d6fa9ee409a054354afc4352b0b9ef7ca222c69b8812cbea9e7d2bf3783f"
"checksum libc 0.2.48 (registry+https://github.com/rust-lang/crates.io-index)" = "e962c7641008ac010fa60a7dfdc1712449f29c44ef2d4702394aea943ee75047"
"checksum linked-hash-map 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)" = "70fb39025bc7cdd76305867c4eccf2f2dcf6e9a57f5b21a93e1c2d86cd03ec9e"
"checksum lock_api 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "62ebf1391f6acad60e5c8b43706dde4582df75c06698ab44511d15016bc2442c"
@ -1660,8 +1892,13 @@ dependencies = [
"checksum memchr 2.1.3 (registry+https://github.com/rust-lang/crates.io-index)" = "e1dd4eaac298c32ce07eb6ed9242eda7d82955b9170b7d6db59b2e02cc63fcb8"
"checksum memmap 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)" = "e2ffa2c986de11a9df78620c01eeaaf27d94d3ff02bf81bfcca953102dd0c6ff"
"checksum memoffset 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "0f9dc261e2b62d7a622bf416ea3c5245cdd5d9a7fcc428c0d06804dfce1775b3"
"checksum mio 0.6.16 (registry+https://github.com/rust-lang/crates.io-index)" = "71646331f2619b1026cc302f87a2b8b648d5c6dd6937846a16cc8ce0f347f432"
"checksum mio-extras 2.0.5 (registry+https://github.com/rust-lang/crates.io-index)" = "46e73a04c2fa6250b8d802134d56d554a9ec2922bf977777c805ea5def61ce40"
"checksum miow 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "8c1f2f3b1cf331de6896aabf6e9d55dca90356cc9960cca7eaaf408a355ae919"
"checksum net2 0.2.33 (registry+https://github.com/rust-lang/crates.io-index)" = "42550d9fb7b6684a6d404d9fa7250c2eb2646df731d1c06afc06dcee9e1bcf88"
"checksum nodrop 0.1.13 (registry+https://github.com/rust-lang/crates.io-index)" = "2f9667ddcc6cc8a43afc9b7917599d7216aa09c463919ea32c59ed6cac8bc945"
"checksum num-derive 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "8af1847c907c2f04d7bfd572fb25bbb4385c637fe5be163cf2f8c5d778fe1e7d"
"checksum notify 4.0.7 (registry+https://github.com/rust-lang/crates.io-index)" = "c968cf37cf949114b00d51b0b23536d1c3a4a3963767cf4c969c65a6af78dc7d"
"checksum num-derive 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)" = "d9fe8fcafd1b86a37ce8a1cfa15ae504817e0c8c2e7ad42767371461ac1d316d"
"checksum num-integer 0.1.39 (registry+https://github.com/rust-lang/crates.io-index)" = "e83d528d2677f0518c570baf2b7abdcf0cd2d248860b68507bdcb3e91d4c0cea"
"checksum num-traits 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)" = "0b3a5d7cc97d6d30d8b9bc8fa19bf45349ffe46241e8816f50f62f6d6aaabee1"
"checksum num_cpus 1.9.0 (registry+https://github.com/rust-lang/crates.io-index)" = "5a69d464bdc213aaaff628444e99578ede64e9c854025aa43b9796530afa9238"
@ -1704,8 +1941,8 @@ dependencies = [
"checksum rustc_version 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "138e3e0acb6c9fb258b19b67cb8abd63c00679d2851805ea151465464fe9030a"
"checksum rusty-fork 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "9591f190d2852720b679c21f66ad929f9f1d7bb09d1193c26167586029d8489c"
"checksum ryu 0.2.7 (registry+https://github.com/rust-lang/crates.io-index)" = "eb9e9b8cde282a9fe6a42dd4681319bfb63f121b8a8ee9439c6f4107e58a46f7"
"checksum salsa 0.10.0-alpha4 (registry+https://github.com/rust-lang/crates.io-index)" = "3f442595eae948da8fbb2aa1e13940d9d2d70031753a27a5d1434f91b706ff12"
"checksum salsa-macros 0.10.0-alpha4 (registry+https://github.com/rust-lang/crates.io-index)" = "2e6c1a1bee4eb44881438e80c1a26db1c3b957b6cc51765615d429019babdec2"
"checksum salsa 0.10.0-alpha5 (registry+https://github.com/rust-lang/crates.io-index)" = "8b5e2535d707dc5ced81106d3b71d806cfeef8a6e8a567472fde7ffd56b770dd"
"checksum salsa-macros 0.10.0-alpha5 (registry+https://github.com/rust-lang/crates.io-index)" = "e7c5da4c649f6d4fc1864fcd9a379b1f7c6d570b278559c84a6e15981c949cc6"
"checksum same-file 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)" = "8f20c4be53a8a1ff4c1f1b2bd14570d2f634628709752f0702ecdd2b3f9a5267"
"checksum scopeguard 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "94258f53601af11e6a49f722422f6e3425c52b06245a5cf9bc09908b174f5e27"
"checksum semver 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)" = "1d7eb9ef2c18661902cc47e535f9bc51b78acd254da71d375c2f6720d9a40403"
@ -1715,6 +1952,7 @@ dependencies = [
"checksum serde_json 1.0.37 (registry+https://github.com/rust-lang/crates.io-index)" = "4b90a9fbe1211e57d3e1c15670f1cb00802988fb23a1a4aad7a2b63544f1920e"
"checksum serde_yaml 0.8.8 (registry+https://github.com/rust-lang/crates.io-index)" = "0887a8e097a69559b56aa2526bf7aff7c3048cf627dff781f0b56a6001534593"
"checksum sha-1 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "51b9d1f3b5de8a167ab06834a7c883bd197f2191e1dda1a22d9ccfeedbf9aded"
"checksum slab 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)" = "c111b5bd5695e56cffe5129854aa230b39c93a305372fdbb2668ca2394eea9f8"
"checksum slug 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)" = "b3bc762e6a4b6c6fcaade73e77f9ebc6991b676f88bb2358bddb56560f073373"
"checksum smallvec 0.6.8 (registry+https://github.com/rust-lang/crates.io-index)" = "88aea073965ab29f6edb5493faf96ad662fb18aa9eeb186a3b7057951605ed15"
"checksum smol_str 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)" = "9af1035bc5d742ab6b7ab16713e41cc2ffe78cb474f6f43cd696b2d16052007e"
@ -1733,6 +1971,9 @@ dependencies = [
"checksum thread_local 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)" = "c6b53e329000edc2b34dbe8545fd20e55a333362d0a321909685a19bd28c3f1b"
"checksum threadpool 1.7.1 (registry+https://github.com/rust-lang/crates.io-index)" = "e2f0c90a5f3459330ac8bc0d2f879c693bb7a2f59689c1083fc4ef83834da865"
"checksum time 0.1.42 (registry+https://github.com/rust-lang/crates.io-index)" = "db8dcfca086c1143c9270ac42a2bbd8a7ee477b78ac8e45b19abfb0cbede4b6f"
"checksum tokio-executor 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)" = "30c6dbf2d1ad1de300b393910e8a3aa272b724a400b6531da03eed99e329fbf0"
"checksum tokio-io 0.1.11 (registry+https://github.com/rust-lang/crates.io-index)" = "b53aeb9d3f5ccf2ebb29e19788f96987fa1355f8fe45ea193928eaaaf3ae820f"
"checksum tokio-reactor 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)" = "afbcdb0f0d2a1e4c440af82d7bbf0bf91a8a8c0575bcd20c05d15be7e9d3a02f"
"checksum typenum 1.10.0 (registry+https://github.com/rust-lang/crates.io-index)" = "612d636f949607bdf9b123b4a6f6d966dedf3ff669f7f045890d3a4a73948169"
"checksum ucd-trie 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "71a9c5b1fe77426cf144cc30e49e955270f5086e31a6441dfa8b32efc09b9d77"
"checksum ucd-util 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)" = "535c204ee4d8434478593480b8f86ab45ec9aae0e83c568ca81abf0fd0e88f86"
@ -1757,8 +1998,11 @@ dependencies = [
"checksum void 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "6a02e4885ed3bc0f2de90ea6dd45ebcbb66dacffe03547fadbb0eeae2770887d"
"checksum wait-timeout 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "b9f3bf741a801531993db6478b95682117471f76916f5e690dd8d45395b09349"
"checksum walkdir 2.2.7 (registry+https://github.com/rust-lang/crates.io-index)" = "9d9d7ed3431229a144296213105a390676cc49c9b6a72bd19f3176c98e129fa1"
"checksum winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)" = "167dc9d6949a9b857f3451275e911c3f44255842c1f7a76f33c55103a909087a"
"checksum winapi 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)" = "92c1eb33641e276cfa214a0522acad57be5c56b10cb348b3c5117db75f3ac4b0"
"checksum winapi-build 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "2d315eee3b34aca4797b2da6b13ed88266e6d612562a0c46390af8299fc699bc"
"checksum winapi-i686-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
"checksum winapi-util 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "afc5508759c5bf4285e61feb862b6083c8480aec864fa17a81fdec6f69b461ab"
"checksum winapi-x86_64-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
"checksum ws2_32-sys 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "d59cefebd0c892fa2dd6de581e937301d8552cb44489cdff035c6187cb63fa5e"
"checksum yaml-rust 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)" = "95acf0db5515d07da9965ec0e0ba6cc2d825e2caeb7303b66ca441729801254e"

19
crates/ra_lsp_server/src/main_loop.rs
View File

@ -11,7 +11,7 @@ use gen_lsp_server::{
};
use lsp_types::NumberOrString;
use ra_ide_api::{Canceled, FileId, LibraryData};
use ra_vfs::VfsTask;
use ra_vfs::{VfsTask, WatcherChange};
use rustc_hash::FxHashSet;
use serde::{de::DeserializeOwned, Serialize};
use threadpool::ThreadPool;
@ -113,6 +113,7 @@ enum Event {
Msg(RawMessage),
Task(Task),
Vfs(VfsTask),
Watcher(WatcherChange),
Lib(LibraryData),
}
@ -149,6 +150,7 @@ impl fmt::Debug for Event {
Event::Task(it) => fmt::Debug::fmt(it, f),
Event::Vfs(it) => fmt::Debug::fmt(it, f),
Event::Lib(it) => fmt::Debug::fmt(it, f),
Event::Watcher(it) => fmt::Debug::fmt(it, f),
}
}
}
@ -183,6 +185,10 @@ fn main_loop_inner(
Ok(task) => Event::Vfs(task),
Err(RecvError) => bail!("vfs died"),
},
recv(state.vfs.read().change_receiver()) -> change => match change {
Ok(change) => Event::Watcher(change),
Err(RecvError) => bail!("vfs watcher died"),
},
recv(libdata_receiver) -> data => Event::Lib(data.unwrap())
};
log::info!("loop_turn = {:?}", event);
@ -194,6 +200,10 @@ fn main_loop_inner(
state.vfs.write().handle_task(task);
state_changed = true;
}
Event::Watcher(change) => {
state.vfs.write().handle_change(change);
state_changed = true;
}
Event::Lib(lib) => {
feedback(internal_mode, "library loaded", msg_sender);
state.add_lib(lib);
@ -365,7 +375,7 @@ fn on_notification(
if let Some(file_id) = state
.vfs
.write()
.add_file_overlay(&path, params.text_document.text)
.add_file_overlay(&path, Some(params.text_document.text))
{
subs.add_sub(FileId(file_id.0.into()));
}
@ -384,7 +394,10 @@ fn on_notification(
.pop()
.ok_or_else(|| format_err!("empty changes"))?
.text;
state.vfs.write().change_file_overlay(path.as_path(), text);
state
.vfs
.write()
.change_file_overlay(path.as_path(), Some(text));
return Ok(());
}
Err(not) => not,

2
crates/ra_vfs/Cargo.toml
View File

@ -10,6 +10,8 @@ relative-path = "0.4.0"
rustc-hash = "1.0"
crossbeam-channel = "0.3.5"
log = "0.4.6"
notify = "4"
drop_bomb = "0.1.0"
thread_worker = { path = "../thread_worker" }
ra_arena = { path = "../ra_arena" }

59
crates/ra_vfs/src/lib.rs
View File

@ -14,26 +14,26 @@
//! which are watched for changes. Typically, there will be a root for each
//! Cargo package.
mod io;
mod watcher;
use std::{
fmt,
mem,
thread,
cmp::Reverse,
path::{Path, PathBuf},
ffi::OsStr,
fmt, fs, mem,
path::{Path, PathBuf},
sync::Arc,
fs,
thread,
};
use rustc_hash::{FxHashMap, FxHashSet};
use relative_path::RelativePathBuf;
use crossbeam_channel::Receiver;
use walkdir::DirEntry;
use ra_arena::{impl_arena_id, Arena, RawId};
use relative_path::RelativePathBuf;
use rustc_hash::{FxHashMap, FxHashSet};
use thread_worker::WorkerHandle;
use ra_arena::{Arena, RawId, impl_arena_id};
use walkdir::DirEntry;
pub use crate::io::TaskResult as VfsTask;
pub use crate::watcher::{Watcher, WatcherChange};
/// `RootFilter` is a predicate that checks if a file can belong to a root. If
/// several filters match a file (nested dirs), the most nested one wins.
@ -85,6 +85,7 @@ pub struct Vfs {
pending_changes: Vec<VfsChange>,
worker: io::Worker,
worker_handle: WorkerHandle,
watcher: Watcher,
}
impl fmt::Debug for Vfs {
@ -97,12 +98,15 @@ impl Vfs {
pub fn new(mut roots: Vec<PathBuf>) -> (Vfs, Vec<VfsRoot>) {
let (worker, worker_handle) = io::start();
let watcher = Watcher::new().unwrap(); // TODO return Result?
let mut res = Vfs {
roots: Arena::default(),
files: Arena::default(),
root2files: FxHashMap::default(),
worker,
worker_handle,
watcher,
pending_changes: Vec::new(),
};
@ -129,6 +133,7 @@ impl Vfs {
filter: Box::new(filter),
};
res.worker.inp.send(task).unwrap();
res.watcher.watch(path).unwrap();
}
let roots = res.roots.iter().map(|(id, _)| id).collect();
(res, roots)
@ -183,6 +188,10 @@ impl Vfs {
&self.worker.out
}
pub fn change_receiver(&self) -> &Receiver<WatcherChange> {
&self.watcher.change_receiver()
}
pub fn handle_task(&mut self, task: io::TaskResult) {
let mut files = Vec::new();
// While we were scanning the root in the backgound, a file might have
@ -209,22 +218,41 @@ impl Vfs {
self.pending_changes.push(change);
}
pub fn add_file_overlay(&mut self, path: &Path, text: String) -> Option<VfsFile> {
pub fn handle_change(&mut self, change: WatcherChange) {
match change {
WatcherChange::Create(path) => {
self.add_file_overlay(&path, None);
}
WatcherChange::Remove(path) => {
self.remove_file_overlay(&path);
}
WatcherChange::Rename(src, dst) => {
self.remove_file_overlay(&src);
self.add_file_overlay(&dst, None);
}
WatcherChange::Write(path) => {
self.change_file_overlay(&path, None);
}
}
}
pub fn add_file_overlay(&mut self, path: &Path, text: Option<String>) -> Option<VfsFile> {
let mut res = None;
if let Some((root, path, file)) = self.find_root(path) {
if let Some((root, rel_path, file)) = self.find_root(path) {
let text = text.unwrap_or_else(|| fs::read_to_string(&path).unwrap_or_default());
let text = Arc::new(text);
let change = if let Some(file) = file {
res = Some(file);
self.change_file(file, Arc::clone(&text));
VfsChange::ChangeFile { file, text }
} else {
let file = self.add_file(root, path.clone(), Arc::clone(&text));
let file = self.add_file(root, rel_path.clone(), Arc::clone(&text));
res = Some(file);
VfsChange::AddFile {
file,
text,
root,
path,
path: rel_path,
}
};
self.pending_changes.push(change);
@ -232,8 +260,10 @@ impl Vfs {
res
}
pub fn change_file_overlay(&mut self, path: &Path, new_text: String) {
pub fn change_file_overlay(&mut self, path: &Path, new_text: Option<String>) {
if let Some((_root, _path, file)) = self.find_root(path) {
let new_text =
new_text.unwrap_or_else(|| fs::read_to_string(&path).unwrap_or_default());
let file = file.expect("can't change a file which wasn't added");
let text = Arc::new(new_text);
self.change_file(file, Arc::clone(&text));
@ -267,6 +297,7 @@ impl Vfs {
/// Sutdown the VFS and terminate the background watching thread.
pub fn shutdown(self) -> thread::Result<()> {
let _ = self.watcher.shutdown();
let _ = self.worker.shutdown();
self.worker_handle.shutdown()
}

96
crates/ra_vfs/src/watcher.rs Normal file
View File

@ -0,0 +1,96 @@
use std::{
path::{Path, PathBuf},
sync::mpsc,
thread,
time::Duration,
};
use crossbeam_channel::Receiver;
use drop_bomb::DropBomb;
use notify::{DebouncedEvent, RecommendedWatcher, RecursiveMode, Watcher as NotifyWatcher};
pub struct Watcher {
receiver: Receiver<WatcherChange>,
watcher: RecommendedWatcher,
thread: thread::JoinHandle<()>,
bomb: DropBomb,
}
#[derive(Debug)]
pub enum WatcherChange {
Create(PathBuf),
Write(PathBuf),
Remove(PathBuf),
Rename(PathBuf, PathBuf),
}
impl WatcherChange {
fn from_debounced_event(ev: DebouncedEvent) -> Option<WatcherChange> {
match ev {
DebouncedEvent::NoticeWrite(_)
| DebouncedEvent::NoticeRemove(_)
| DebouncedEvent::Chmod(_)
| DebouncedEvent::Rescan => {
// ignore
None
}
DebouncedEvent::Create(path) => Some(WatcherChange::Create(path)),
DebouncedEvent::Write(path) => Some(WatcherChange::Write(path)),
DebouncedEvent::Remove(path) => Some(WatcherChange::Remove(path)),
DebouncedEvent::Rename(src, dst) => Some(WatcherChange::Rename(src, dst)),
DebouncedEvent::Error(err, path) => {
// TODO
log::warn!("watch error {}, {:?}", err, path);
None
}
}
}
}
impl Watcher {
pub fn new() -> Result<Watcher, Box<std::error::Error>> {
let (input_sender, input_receiver) = mpsc::channel();
let watcher = notify::watcher(input_sender, Duration::from_millis(250))?;
let (output_sender, output_receiver) = crossbeam_channel::unbounded();
let thread = thread::spawn(move || loop {
match input_receiver.recv() {
Ok(ev) => {
// forward relevant events only
if let Some(change) = WatcherChange::from_debounced_event(ev) {
output_sender.send(change).unwrap();
}
}
Err(err) => {
log::debug!("Watcher stopped ({})", err);
break;
}
}
});
Ok(Watcher {
receiver: output_receiver,
watcher,
thread,
bomb: DropBomb::new(format!("Watcher was not shutdown")),
})
}
pub fn watch(&mut self, root: impl AsRef<Path>) -> Result<(), Box<std::error::Error>> {
self.watcher.watch(root, RecursiveMode::Recursive)?;
Ok(())
}
pub fn change_receiver(&self) -> &Receiver<WatcherChange> {
&self.receiver
}
pub fn shutdown(mut self) -> thread::Result<()> {
self.bomb.defuse();
drop(self.watcher);
let res = self.thread.join();
match &res {
Ok(()) => log::info!("... Watcher terminated with ok"),
Err(_) => log::error!("... Watcher terminated with err"),
}
res
}
}