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LSP: Use the same machanism to avoid re-compiling the preview more often than needed

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Just use an atomic counter to count the number of pending event so that
there is at most one pending event at the time.
This commit is contained in:
Olivier Goffart 2021-04-16 10:56:30 +02:00
parent 546d4aa689
commit dcedaad402
1 changed files with 8 additions and 1 deletions
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9
tools/lsp/preview.rs
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@ -71,7 +71,14 @@ pub fn load_preview(
component: Option<String>,
post_load_behavior: PostLoadBehavior,
) {
use std::sync::atomic::{AtomicU32, Ordering};
const PENDING_EVENTS: AtomicU32 = AtomicU32::new(0);
if PENDING_EVENTS.load(Ordering::SeqCst) > 0 {
return;
}
PENDING_EVENTS.fetch_add(1, Ordering::SeqCst);
run_in_ui_thread(Box::pin(async move {
PENDING_EVENTS.fetch_sub(1, Ordering::SeqCst);
reload_preview(sender, &path, component, post_load_behavior).await
}));
}
@ -94,7 +101,7 @@ pub fn set_contents(path: &Path, content: String) {
if cache.dependency.contains(path) {
let current_root = cache.current_root.clone();
let current_component = cache.current_component.clone();
let sender = cache.sender.take();
let sender = cache.sender.clone();
drop(cache);
if let Some(sender) = sender {
load_preview(sender, current_root, current_component, PostLoadBehavior::DoNothing);