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Support better inlay cache parallelization

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This commit is contained in:
Kirill Bulatov 2023-06-24 01:08:20 +03:00
parent 890b164278
commit 83b3a914bc
2 changed files with 198 additions and 203 deletions
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329
crates/editor/src/inlay_hint_cache.rs
View file

@ -9,13 +9,16 @@ use clock::Global;
use gpui::{ModelHandle, Task, ViewContext};
use language::{Buffer, BufferSnapshot};
use log::error;
use parking_lot::RwLock;
use project::{InlayHint, InlayHintKind};
use collections::{hash_map, HashMap, HashSet};
use util::post_inc;
pub struct InlayHintCache {
snapshot: CacheSnapshot,
pub hints: HashMap<ExcerptId, Arc<RwLock<CachedExcerptHints>>>,
pub allowed_hint_kinds: HashSet<Option<InlayHintKind>>,
pub version: usize,
update_tasks: HashMap<ExcerptId, InlayHintUpdateTask>,
}
@ -24,13 +27,6 @@ struct InlayHintUpdateTask {
_task: Task<()>,
}
#[derive(Debug)]
pub struct CacheSnapshot {
pub hints: HashMap<ExcerptId, Arc<CachedExcerptHints>>,
pub allowed_hint_kinds: HashSet<Option<InlayHintKind>>,
pub version: usize,
}
#[derive(Debug)]
pub struct CachedExcerptHints {
version: usize,
@ -84,19 +80,13 @@ struct ExcerptHintsUpdate {
impl InlayHintCache {
pub fn new(inlay_hint_settings: editor_settings::InlayHints) -> Self {
Self {
snapshot: CacheSnapshot {
allowed_hint_kinds: allowed_hint_types(inlay_hint_settings),
hints: HashMap::default(),
version: 0,
},
allowed_hint_kinds: allowed_hint_types(inlay_hint_settings),
hints: HashMap::default(),
update_tasks: HashMap::default(),
version: 0,
}
}
pub fn snapshot(&self) -> &CacheSnapshot {
&self.snapshot
}
pub fn update_settings(
&mut self,
multi_buffer: &ModelHandle<MultiBuffer>,
@ -106,37 +96,33 @@ impl InlayHintCache {
) -> Option<InlaySplice> {
let new_allowed_hint_kinds = allowed_hint_types(inlay_hint_settings);
if !inlay_hint_settings.enabled {
if self.snapshot.hints.is_empty() {
self.snapshot.allowed_hint_kinds = new_allowed_hint_kinds;
if self.hints.is_empty() {
self.allowed_hint_kinds = new_allowed_hint_kinds;
None
} else {
self.clear();
self.snapshot.allowed_hint_kinds = new_allowed_hint_kinds;
return Some(InlaySplice {
self.allowed_hint_kinds = new_allowed_hint_kinds;
Some(InlaySplice {
to_remove: visible_hints.iter().map(|inlay| inlay.id).collect(),
to_insert: Vec::new(),
});
})
}
return None;
} else if new_allowed_hint_kinds == self.allowed_hint_kinds {
None
} else {
let new_splice = self.new_allowed_hint_kinds_splice(
multi_buffer,
&visible_hints,
&new_allowed_hint_kinds,
cx,
);
if new_splice.is_some() {
self.version += 1;
self.update_tasks.clear();
self.allowed_hint_kinds = new_allowed_hint_kinds;
}
new_splice
}
if new_allowed_hint_kinds == self.snapshot.allowed_hint_kinds {
return None;
}
let new_splice = new_allowed_hint_kinds_splice(
&self.snapshot,
multi_buffer,
&visible_hints,
&new_allowed_hint_kinds,
cx,
);
if new_splice.is_some() {
self.snapshot.version += 1;
self.update_tasks.clear();
self.snapshot.allowed_hint_kinds = new_allowed_hint_kinds;
}
new_splice
}
pub fn spawn_hints_update(
@ -154,9 +140,10 @@ impl InlayHintCache {
update_tasks
.retain(|task_excerpt_id, _| excerpts_to_query.contains_key(task_excerpt_id));
}
let cache_version = self.version;
excerpts_to_query.retain(|visible_excerpt_id, _| {
match update_tasks.entry(*visible_excerpt_id) {
hash_map::Entry::Occupied(o) => match o.get().version.cmp(&self.snapshot.version) {
hash_map::Entry::Occupied(o) => match o.get().version.cmp(&cache_version) {
cmp::Ordering::Less => true,
cmp::Ordering::Equal => invalidate_cache,
cmp::Ordering::Greater => false,
@ -169,7 +156,6 @@ impl InlayHintCache {
update_tasks
.retain(|task_excerpt_id, _| excerpts_to_query.contains_key(task_excerpt_id));
}
let cache_version = self.snapshot.version;
excerpts_to_query.retain(|visible_excerpt_id, _| {
match update_tasks.entry(*visible_excerpt_id) {
hash_map::Entry::Occupied(o) => match o.get().version.cmp(&cache_version) {
@ -211,15 +197,12 @@ impl InlayHintCache {
cache_version,
invalidate,
};
let cached_excxerpt_hints = editor
.inlay_hint_cache
.snapshot
.hints
.get(&excerpt_id)
.cloned();
let cached_excxerpt_hints =
editor.inlay_hint_cache.hints.get(&excerpt_id).cloned();
if let Some(cached_excerpt_hints) = &cached_excxerpt_hints {
let new_task_buffer_version = buffer_snapshot.version();
let cached_excerpt_hints = cached_excerpt_hints.read();
let cached_buffer_version = &cached_excerpt_hints.buffer_version;
if cached_buffer_version.changed_since(new_task_buffer_version) {
return;
@ -250,11 +233,113 @@ impl InlayHintCache {
.detach();
}
fn new_allowed_hint_kinds_splice(
&self,
multi_buffer: &ModelHandle<MultiBuffer>,
visible_hints: &[Inlay],
new_kinds: &HashSet<Option<InlayHintKind>>,
cx: &mut ViewContext<Editor>,
) -> Option<InlaySplice> {
let old_kinds = &self.allowed_hint_kinds;
if new_kinds == old_kinds {
return None;
}
let mut to_remove = Vec::new();
let mut to_insert = Vec::new();
let mut shown_hints_to_remove = visible_hints.iter().fold(
HashMap::<ExcerptId, Vec<(Anchor, InlayId)>>::default(),
|mut current_hints, inlay| {
current_hints
.entry(inlay.position.excerpt_id)
.or_default()
.push((inlay.position, inlay.id));
current_hints
},
);
let multi_buffer = multi_buffer.read(cx);
let multi_buffer_snapshot = multi_buffer.snapshot(cx);
for (excerpt_id, excerpt_cached_hints) in &self.hints {
let shown_excerpt_hints_to_remove =
shown_hints_to_remove.entry(*excerpt_id).or_default();
let excerpt_cached_hints = excerpt_cached_hints.read();
let mut excerpt_cache = excerpt_cached_hints.hints.iter().fuse().peekable();
shown_excerpt_hints_to_remove.retain(|(shown_anchor, shown_hint_id)| {
let Some(buffer) = shown_anchor
.buffer_id
.and_then(|buffer_id| multi_buffer.buffer(buffer_id)) else { return false };
let buffer_snapshot = buffer.read(cx).snapshot();
loop {
match excerpt_cache.peek() {
Some((cached_hint_id, cached_hint)) => {
if cached_hint_id == shown_hint_id {
excerpt_cache.next();
return !new_kinds.contains(&cached_hint.kind);
}
match cached_hint
.position
.cmp(&shown_anchor.text_anchor, &buffer_snapshot)
{
cmp::Ordering::Less | cmp::Ordering::Equal => {
if !old_kinds.contains(&cached_hint.kind)
&& new_kinds.contains(&cached_hint.kind)
{
to_insert.push((
multi_buffer_snapshot.anchor_in_excerpt(
*excerpt_id,
cached_hint.position,
),
*cached_hint_id,
cached_hint.clone(),
));
}
excerpt_cache.next();
}
cmp::Ordering::Greater => return true,
}
}
None => return true,
}
}
});
for (cached_hint_id, maybe_missed_cached_hint) in excerpt_cache {
let cached_hint_kind = maybe_missed_cached_hint.kind;
if !old_kinds.contains(&cached_hint_kind) && new_kinds.contains(&cached_hint_kind) {
to_insert.push((
multi_buffer_snapshot
.anchor_in_excerpt(*excerpt_id, maybe_missed_cached_hint.position),
*cached_hint_id,
maybe_missed_cached_hint.clone(),
));
}
}
}
to_remove.extend(
shown_hints_to_remove
.into_values()
.flatten()
.map(|(_, hint_id)| hint_id),
);
if to_remove.is_empty() && to_insert.is_empty() {
None
} else {
Some(InlaySplice {
to_remove,
to_insert,
})
}
}
fn clear(&mut self) {
self.snapshot.version += 1;
self.version += 1;
self.update_tasks.clear();
self.snapshot.hints.clear();
self.snapshot.allowed_hint_kinds.clear();
self.hints.clear();
self.allowed_hint_kinds.clear();
}
}
@ -263,7 +348,7 @@ fn new_update_task(
multi_buffer_snapshot: MultiBufferSnapshot,
buffer_snapshot: BufferSnapshot,
visible_hints: Arc<Vec<Inlay>>,
cached_excerpt_hints: Option<Arc<CachedExcerptHints>>,
cached_excerpt_hints: Option<Arc<RwLock<CachedExcerptHints>>>,
cx: &mut ViewContext<'_, '_, Editor>,
) -> InlayHintUpdateTask {
let hints_fetch_task = hints_fetch_task(query, cx);
@ -290,19 +375,16 @@ fn new_update_task(
.update(&mut cx, |editor, cx| {
let cached_excerpt_hints = editor
.inlay_hint_cache
.snapshot
.hints
.entry(new_update.excerpt_id)
.or_insert_with(|| {
Arc::new(CachedExcerptHints {
Arc::new(RwLock::new(CachedExcerptHints {
version: new_update.cache_version,
buffer_version: buffer_snapshot.version().clone(),
hints: Vec::new(),
})
}))
});
let cached_excerpt_hints = Arc::get_mut(cached_excerpt_hints)
.expect("Cached excerpt hints were dropped with the task");
let mut cached_excerpt_hints = cached_excerpt_hints.write();
match new_update.cache_version.cmp(&cached_excerpt_hints.version) {
cmp::Ordering::Less => return,
cmp::Ordering::Greater | cmp::Ordering::Equal => {
@ -314,7 +396,7 @@ fn new_update_task(
});
cached_excerpt_hints.buffer_version =
buffer_snapshot.version().clone();
editor.inlay_hint_cache.snapshot.version += 1;
editor.inlay_hint_cache.version += 1;
let mut splice = InlaySplice {
to_remove: new_update.remove_from_visible,
@ -327,7 +409,6 @@ fn new_update_task(
let new_inlay_id = InlayId(post_inc(&mut editor.next_inlay_id));
if editor
.inlay_hint_cache
.snapshot
.allowed_hint_kinds
.contains(&new_hint.kind)
{
@ -346,6 +427,7 @@ fn new_update_task(
.sort_by(|(_, hint_a), (_, hint_b)| {
hint_a.position.cmp(&hint_b.position, &buffer_snapshot)
});
drop(cached_excerpt_hints);
let InlaySplice {
to_remove,
@ -368,109 +450,11 @@ fn new_update_task(
}
}
fn new_allowed_hint_kinds_splice(
cache: &CacheSnapshot,
multi_buffer: &ModelHandle<MultiBuffer>,
visible_hints: &[Inlay],
new_kinds: &HashSet<Option<InlayHintKind>>,
cx: &mut ViewContext<Editor>,
) -> Option<InlaySplice> {
let old_kinds = &cache.allowed_hint_kinds;
if new_kinds == old_kinds {
return None;
}
let mut to_remove = Vec::new();
let mut to_insert = Vec::new();
let mut shown_hints_to_remove = visible_hints.iter().fold(
HashMap::<ExcerptId, Vec<(Anchor, InlayId)>>::default(),
|mut current_hints, inlay| {
current_hints
.entry(inlay.position.excerpt_id)
.or_default()
.push((inlay.position, inlay.id));
current_hints
},
);
let multi_buffer = multi_buffer.read(cx);
let multi_buffer_snapshot = multi_buffer.snapshot(cx);
for (excerpt_id, excerpt_cached_hints) in &cache.hints {
let shown_excerpt_hints_to_remove = shown_hints_to_remove.entry(*excerpt_id).or_default();
let mut excerpt_cache = excerpt_cached_hints.hints.iter().fuse().peekable();
shown_excerpt_hints_to_remove.retain(|(shown_anchor, shown_hint_id)| {
let Some(buffer) = shown_anchor
.buffer_id
.and_then(|buffer_id| multi_buffer.buffer(buffer_id)) else { return false };
let buffer_snapshot = buffer.read(cx).snapshot();
loop {
match excerpt_cache.peek() {
Some((cached_hint_id, cached_hint)) => {
if cached_hint_id == shown_hint_id {
excerpt_cache.next();
return !new_kinds.contains(&cached_hint.kind);
}
match cached_hint
.position
.cmp(&shown_anchor.text_anchor, &buffer_snapshot)
{
cmp::Ordering::Less | cmp::Ordering::Equal => {
if !old_kinds.contains(&cached_hint.kind)
&& new_kinds.contains(&cached_hint.kind)
{
to_insert.push((
multi_buffer_snapshot
.anchor_in_excerpt(*excerpt_id, cached_hint.position),
*cached_hint_id,
cached_hint.clone(),
));
}
excerpt_cache.next();
}
cmp::Ordering::Greater => return true,
}
}
None => return true,
}
}
});
for (cached_hint_id, maybe_missed_cached_hint) in excerpt_cache {
let cached_hint_kind = maybe_missed_cached_hint.kind;
if !old_kinds.contains(&cached_hint_kind) && new_kinds.contains(&cached_hint_kind) {
to_insert.push((
multi_buffer_snapshot
.anchor_in_excerpt(*excerpt_id, maybe_missed_cached_hint.position),
*cached_hint_id,
maybe_missed_cached_hint.clone(),
));
}
}
}
to_remove.extend(
shown_hints_to_remove
.into_values()
.flatten()
.map(|(_, hint_id)| hint_id),
);
if to_remove.is_empty() && to_insert.is_empty() {
None
} else {
Some(InlaySplice {
to_remove,
to_insert,
})
}
}
fn new_excerpt_hints_update_result(
query: ExcerptQuery,
new_excerpt_hints: Vec<InlayHint>,
buffer_snapshot: &BufferSnapshot,
cached_excerpt_hints: Option<Arc<CachedExcerptHints>>,
cached_excerpt_hints: Option<Arc<RwLock<CachedExcerptHints>>>,
visible_hints: &[Inlay],
) -> Option<ExcerptHintsUpdate> {
let mut add_to_cache: Vec<InlayHint> = Vec::new();
@ -482,6 +466,7 @@ fn new_excerpt_hints_update_result(
}
let missing_from_cache = match &cached_excerpt_hints {
Some(cached_excerpt_hints) => {
let cached_excerpt_hints = cached_excerpt_hints.read();
match cached_excerpt_hints.hints.binary_search_by(|probe| {
probe.1.position.cmp(&new_hint.position, buffer_snapshot)
}) {
@ -518,15 +503,19 @@ fn new_excerpt_hints_update_result(
.map(|inlay_hint| inlay_hint.id)
.filter(|hint_id| !excerpt_hints_to_persist.contains_key(hint_id)),
);
remove_from_cache.extend(
cached_excerpt_hints
.iter()
.flat_map(|excerpt_hints| excerpt_hints.hints.iter())
.filter(|(cached_inlay_id, _)| {
!excerpt_hints_to_persist.contains_key(cached_inlay_id)
})
.map(|(cached_inlay_id, _)| *cached_inlay_id),
);
if let Some(cached_excerpt_hints) = &cached_excerpt_hints {
let cached_excerpt_hints = cached_excerpt_hints.read();
remove_from_cache.extend(
cached_excerpt_hints
.hints
.iter()
.filter(|(cached_inlay_id, _)| {
!excerpt_hints_to_persist.contains_key(cached_inlay_id)
})
.map(|(cached_inlay_id, _)| *cached_inlay_id),
);
}
}
if remove_from_visible.is_empty() && remove_from_cache.is_empty() && add_to_cache.is_empty() {