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Use an executor::Background in AppContext::thread_pool

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This commit is contained in:
Antonio Scandurra 2021-07-13 14:06:38 +02:00
parent f58ef25fc5
commit f836a25500
11 changed files with 54 additions and 265 deletions
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8
Cargo.lock generated
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@ -2173,7 +2173,6 @@ dependencies = [
"rand 0.8.3",
"replace_with",
"resvg",
"scoped-pool",
"seahash",
"serde 1.0.125",
"serde_json 1.0.64",
@ -4164,13 +4163,6 @@ dependencies = [
"winapi 0.3.9",
]
[[package]]
name = "scoped-pool"
version = "0.0.1"
dependencies = [
"crossbeam-channel",
]
[[package]]
name = "scoped-tls"
version = "1.0.0"

10
Cargo.toml
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@ -1,13 +1,5 @@
[workspace]
members = [
"fsevent",
"gpui",
"gpui_macros",
"scoped_pool",
"server",
"zed",
"zed-rpc"
]
members = ["fsevent", "gpui", "gpui_macros", "server", "zed", "zed-rpc"]
[patch.crates-io]
async-task = { git = "https://github.com/zed-industries/async-task", rev = "341b57d6de98cdfd7b418567b8de2022ca993a6e" }

1
gpui/Cargo.toml
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@ -20,7 +20,6 @@ postage = { version = "0.4.1", features = ["futures-traits"] }
rand = "0.8.3"
replace_with = "0.1.7"
resvg = "0.14"
scoped-pool = { path = "../scoped_pool" }
seahash = "4.1"
serde = { version = "1.0.125", features = ["derive"] }
serde_json = "1.0.64"

13
gpui/src/app.rs
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@ -123,6 +123,7 @@ impl App {
let cx = Rc::new(RefCell::new(MutableAppContext::new(
foreground,
Arc::new(executor::Background::new()),
Arc::new(executor::Background::new()),
Arc::new(platform),
Rc::new(foreground_platform),
(),
@ -139,6 +140,7 @@ impl App {
let app = Self(Rc::new(RefCell::new(MutableAppContext::new(
foreground,
Arc::new(executor::Background::new()),
Arc::new(executor::Background::new()),
platform.clone(),
foreground_platform.clone(),
asset_source,
@ -245,6 +247,7 @@ impl TestAppContext {
pub fn new(
foreground: Rc<executor::Foreground>,
background: Arc<executor::Background>,
thread_pool: Arc<executor::Background>,
first_entity_id: usize,
) -> Self {
let platform = Arc::new(platform::test::platform());
@ -252,6 +255,7 @@ impl TestAppContext {
let mut cx = MutableAppContext::new(
foreground.clone(),
background,
thread_pool,
platform,
foreground_platform.clone(),
(),
@ -590,6 +594,7 @@ impl MutableAppContext {
fn new(
foreground: Rc<executor::Foreground>,
background: Arc<executor::Background>,
thread_pool: Arc<executor::Background>,
platform: Arc<dyn platform::Platform>,
foreground_platform: Rc<dyn platform::ForegroundPlatform>,
asset_source: impl AssetSource,
@ -607,7 +612,7 @@ impl MutableAppContext {
values: Default::default(),
ref_counts: Arc::new(Mutex::new(RefCounts::default())),
background,
thread_pool: scoped_pool::Pool::new(num_cpus::get(), "app"),
thread_pool,
font_cache: Arc::new(FontCache::new(fonts)),
},
actions: HashMap::new(),
@ -1485,7 +1490,7 @@ pub struct AppContext {
values: RwLock<HashMap<(TypeId, usize), Box<dyn Any>>>,
background: Arc<executor::Background>,
ref_counts: Arc<Mutex<RefCounts>>,
thread_pool: scoped_pool::Pool,
thread_pool: Arc<executor::Background>,
font_cache: Arc<FontCache>,
}
@ -1530,7 +1535,7 @@ impl AppContext {
&self.font_cache
}
pub fn thread_pool(&self) -> &scoped_pool::Pool {
pub fn thread_pool(&self) -> &Arc<executor::Background> {
&self.thread_pool
}
@ -1716,7 +1721,7 @@ impl<'a, T: Entity> ModelContext<'a, T> {
&self.app.cx.background
}
pub fn thread_pool(&self) -> &scoped_pool::Pool {
pub fn thread_pool(&self) -> &Arc<executor::Background> {
&self.app.cx.thread_pool
}

1
gpui/src/lib.rs
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@ -30,4 +30,3 @@ pub use presenter::{
AfterLayoutContext, Axis, DebugContext, EventContext, LayoutContext, PaintContext,
SizeConstraint, Vector2FExt,
};
pub use scoped_pool;

2
gpui_macros/src/lib.rs
View File

@ -60,7 +60,7 @@ pub fn test(args: TokenStream, function: TokenStream) -> TokenStream {
let inner_fn_args = (0..inner_fn.sig.inputs.len())
.map(|i| {
let first_entity_id = i * 100_000;
quote!(#namespace::TestAppContext::new(foreground.clone(), background.clone(), #first_entity_id),)
quote!(#namespace::TestAppContext::new(foreground.clone(), background.clone(), background.clone(), #first_entity_id),)
})
.collect::<proc_macro2::TokenStream>();

8
scoped_pool/Cargo.toml
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@ -1,8 +0,0 @@
[package]
name = "scoped-pool"
version = "0.0.1"
license = "MIT"
edition = "2018"
[dependencies]
crossbeam-channel = "0.5"

188
scoped_pool/src/lib.rs
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@ -1,188 +0,0 @@
use crossbeam_channel as chan;
use std::{marker::PhantomData, mem::transmute, thread};
#[derive(Clone)]
pub struct Pool {
req_tx: chan::Sender<Request>,
thread_count: usize,
}
pub struct Scope<'a> {
req_count: usize,
req_tx: chan::Sender<Request>,
resp_tx: chan::Sender<()>,
resp_rx: chan::Receiver<()>,
phantom: PhantomData<&'a ()>,
}
struct Request {
callback: Box<dyn FnOnce() + Send + 'static>,
resp_tx: chan::Sender<()>,
}
impl Pool {
pub fn new(thread_count: usize, name: impl AsRef<str>) -> Self {
let (req_tx, req_rx) = chan::unbounded();
for i in 0..thread_count {
thread::Builder::new()
.name(format!("scoped_pool {} {}", name.as_ref(), i))
.spawn({
let req_rx = req_rx.clone();
move || loop {
match req_rx.recv() {
Err(_) => break,
Ok(Request { callback, resp_tx }) => {
callback();
resp_tx.send(()).ok();
}
}
}
})
.expect("scoped_pool: failed to spawn thread");
}
Self {
req_tx,
thread_count,
}
}
pub fn thread_count(&self) -> usize {
self.thread_count
}
pub fn scoped<'scope, F, R>(&self, scheduler: F) -> R
where
F: FnOnce(&mut Scope<'scope>) -> R,
{
let (resp_tx, resp_rx) = chan::bounded(1);
let mut scope = Scope {
resp_tx,
resp_rx,
req_count: 0,
phantom: PhantomData,
req_tx: self.req_tx.clone(),
};
let result = scheduler(&mut scope);
scope.wait();
result
}
}
impl<'scope> Scope<'scope> {
pub fn execute<F>(&mut self, callback: F)
where
F: FnOnce() + Send + 'scope,
{
// Transmute the callback's lifetime to be 'static. This is safe because in ::wait,
// we block until all the callbacks have been called and dropped.
let callback = unsafe {
transmute::<Box<dyn FnOnce() + Send + 'scope>, Box<dyn FnOnce() + Send + 'static>>(
Box::new(callback),
)
};
self.req_count += 1;
self.req_tx
.send(Request {
callback,
resp_tx: self.resp_tx.clone(),
})
.unwrap();
}
fn wait(&self) {
for _ in 0..self.req_count {
self.resp_rx.recv().unwrap();
}
}
}
#[cfg(test)]
mod tests {
use super::*;
use std::sync::{Arc, Mutex};
#[test]
fn test_execute() {
let pool = Pool::new(3, "test");
{
let vec = Mutex::new(Vec::new());
pool.scoped(|scope| {
for _ in 0..3 {
scope.execute(|| {
for i in 0..5 {
vec.lock().unwrap().push(i);
}
});
}
});
let mut vec = vec.into_inner().unwrap();
vec.sort_unstable();
assert_eq!(vec, [0, 0, 0, 1, 1, 1, 2, 2, 2, 3, 3, 3, 4, 4, 4])
}
}
#[test]
fn test_clone_send_and_execute() {
let pool = Pool::new(3, "test");
let mut threads = Vec::new();
for _ in 0..3 {
threads.push(thread::spawn({
let pool = pool.clone();
move || {
let vec = Mutex::new(Vec::new());
pool.scoped(|scope| {
for _ in 0..3 {
scope.execute(|| {
for i in 0..5 {
vec.lock().unwrap().push(i);
}
});
}
});
let mut vec = vec.into_inner().unwrap();
vec.sort_unstable();
assert_eq!(vec, [0, 0, 0, 1, 1, 1, 2, 2, 2, 3, 3, 3, 4, 4, 4])
}
}));
}
for thread in threads {
thread.join().unwrap();
}
}
#[test]
fn test_share_and_execute() {
let pool = Arc::new(Pool::new(3, "test"));
let mut threads = Vec::new();
for _ in 0..3 {
threads.push(thread::spawn({
let pool = pool.clone();
move || {
let vec = Mutex::new(Vec::new());
pool.scoped(|scope| {
for _ in 0..3 {
scope.execute(|| {
for i in 0..5 {
vec.lock().unwrap().push(i);
}
});
}
});
let mut vec = vec.into_inner().unwrap();
vec.sort_unstable();
assert_eq!(vec, [0, 0, 0, 1, 1, 1, 2, 2, 2, 3, 3, 3, 4, 4, 4])
}
}));
}
for thread in threads {
thread.join().unwrap();
}
}
}

14
zed/src/file_finder.rs
View File

@ -403,7 +403,7 @@ impl FileFinder {
self.cancel_flag.store(true, atomic::Ordering::Relaxed);
self.cancel_flag = Arc::new(AtomicBool::new(false));
let cancel_flag = self.cancel_flag.clone();
let background_task = cx.background_executor().spawn(async move {
Some(cx.spawn(|this, mut cx| async move {
let include_root_name = snapshots.len() > 1;
let matches = match_paths(
snapshots.iter(),
@ -414,14 +414,12 @@ impl FileFinder {
100,
cancel_flag.clone(),
pool,
);
)
.await;
let did_cancel = cancel_flag.load(atomic::Ordering::Relaxed);
(search_id, did_cancel, query, matches)
});
Some(cx.spawn(|this, mut cx| async move {
let matches = background_task.await;
this.update(&mut cx, |this, cx| this.update_matches(matches, cx));
this.update(&mut cx, |this, cx| {
this.update_matches((search_id, did_cancel, query, matches), cx)
});
}))
}

58
zed/src/worktree.rs
View File

@ -550,15 +550,11 @@ impl Worktree {
let (mut tree, scan_states_tx) = LocalWorktree::new(path, languages, fs.clone(), cx);
let abs_path = tree.snapshot.abs_path.clone();
let background_snapshot = tree.background_snapshot.clone();
let background = if fs.is_fake() {
cx.background().clone()
} else {
Arc::new(executor::Background::new())
};
let thread_pool = cx.thread_pool().clone();
tree._background_scanner_task = Some(cx.background().spawn(async move {
let events = fs.watch(&abs_path, Duration::from_millis(100)).await;
let scanner =
BackgroundScanner::new(background_snapshot, scan_states_tx, fs, background);
BackgroundScanner::new(background_snapshot, scan_states_tx, fs, thread_pool);
scanner.run(events).await;
}));
Worktree::Local(tree)
@ -3017,36 +3013,40 @@ mod tests {
cx.read(|cx| tree.read(cx).as_local().unwrap().scan_complete())
.await;
cx.read(|cx| {
let snapshot = cx.read(|cx| {
let tree = tree.read(cx);
assert_eq!(tree.file_count(), 5);
assert_eq!(
tree.inode_for_path("fennel/grape"),
tree.inode_for_path("finnochio/grape")
);
let results = match_paths(
Some(tree.snapshot()).iter(),
"bna",
false,
false,
false,
10,
Default::default(),
cx.thread_pool().clone(),
)
.into_iter()
.map(|result| result.path)
.collect::<Vec<Arc<Path>>>();
assert_eq!(
results,
vec![
PathBuf::from("banana/carrot/date").into(),
PathBuf::from("banana/carrot/endive").into(),
]
);
})
tree.snapshot()
});
let results = cx
.read(|cx| {
match_paths(
Some(&snapshot).into_iter(),
"bna",
false,
false,
false,
10,
Default::default(),
cx.thread_pool().clone(),
)
})
.await;
assert_eq!(
results
.into_iter()
.map(|result| result.path)
.collect::<Vec<Arc<Path>>>(),
vec![
PathBuf::from("banana/carrot/date").into(),
PathBuf::from("banana/carrot/endive").into(),
]
);
}
#[gpui::test]

16
zed/src/worktree/fuzzy.rs
View File

@ -1,6 +1,6 @@
use super::{char_bag::CharBag, EntryKind, Snapshot};
use crate::util;
use gpui::scoped_pool;
use gpui::executor;
use std::{
cmp::{max, min, Ordering},
path::Path,
@ -51,7 +51,7 @@ impl Ord for PathMatch {
}
}
pub fn match_paths<'a, T>(
pub async fn match_paths<'a, T>(
snapshots: T,
query: &str,
include_root_name: bool,
@ -59,7 +59,7 @@ pub fn match_paths<'a, T>(
smart_case: bool,
max_results: usize,
cancel_flag: Arc<AtomicBool>,
pool: scoped_pool::Pool,
pool: Arc<executor::Background>,
) -> Vec<PathMatch>
where
T: Clone + Send + Iterator<Item = &'a Snapshot> + 'a,
@ -71,15 +71,14 @@ where
let query = &query;
let query_chars = CharBag::from(&lowercase_query[..]);
let cpus = num_cpus::get();
let path_count: usize = if include_ignored {
snapshots.clone().map(Snapshot::file_count).sum()
} else {
snapshots.clone().map(Snapshot::visible_file_count).sum()
};
let segment_size = (path_count + cpus - 1) / cpus;
let mut segment_results = (0..cpus)
let segment_size = (path_count + pool.threads() - 1) / pool.threads();
let mut segment_results = (0..pool.threads())
.map(|_| Vec::with_capacity(max_results))
.collect::<Vec<_>>();
@ -87,7 +86,7 @@ where
for (segment_idx, results) in segment_results.iter_mut().enumerate() {
let snapshots = snapshots.clone();
let cancel_flag = &cancel_flag;
scope.execute(move || {
scope.spawn(async move {
let segment_start = segment_idx * segment_size;
let segment_end = segment_start + segment_size;
@ -152,7 +151,8 @@ where
}
})
}
});
})
.await;
let mut results = Vec::new();
for segment_result in segment_results {