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wayland: use arc-swap over Mutex for FOCUSED_APP for better concurrency

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Signed-off-by: NotAShelf <raf@notashelf.dev>
Change-Id: Id6b40d5c533c35dda5bce7b852b836f26a6a6964
This commit is contained in:
raf 2026-03-27 08:39:49 +03:00
commit fe86356399
Signed by: NotAShelf
GPG key ID: 29D95B64378DB4BF
3 changed files with 21 additions and 11 deletions
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19
src/wayland/mod.rs
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@ -1,8 +1,9 @@
use std::{
collections::HashMap,
sync::{LazyLock, Mutex},
sync::{Arc, LazyLock, Mutex},
};
use arc_swap::ArcSwapOption;
use log::debug;
use wayland_client::{
Connection as WaylandConnection,
@ -17,7 +18,7 @@ use wayland_protocols_wlr::foreign_toplevel::v1::client::{
zwlr_foreign_toplevel_manager_v1::{self, ZwlrForeignToplevelManagerV1},
};
static FOCUSED_APP: Mutex<Option<String>> = Mutex::new(None);
static FOCUSED_APP: ArcSwapOption<String> = ArcSwapOption::const_empty();
static TOPLEVEL_APPS: LazyLock<Mutex<HashMap<ObjectId, String>>> =
LazyLock::new(|| Mutex::new(HashMap::new()));
@ -32,12 +33,11 @@ pub fn init_wayland_state() {
/// Get the currently focused window application name using Wayland protocols
pub fn get_focused_window_app() -> Option<String> {
// Try Wayland protocol first
if let Ok(focused) = FOCUSED_APP.lock()
&& let Some(ref app) = *focused
{
// Load the focused app using lock-free arc-swap
let focused = FOCUSED_APP.load();
if let Some(app) = focused.as_ref() {
debug!("Found focused app via Wayland protocol: {app}");
return Some(app.clone());
return Some(app.to_string());
}
debug!("No focused window detection method worked");
@ -152,12 +152,11 @@ impl Dispatch<ZwlrForeignToplevelHandleV1, ()> for AppState {
}) {
debug!("Toplevel activated");
// Update focused app to the `app_id` of this handle
if let (Ok(apps), Ok(mut focused)) =
(TOPLEVEL_APPS.lock(), FOCUSED_APP.lock())
if let Ok(apps) = TOPLEVEL_APPS.lock()
&& let Some(app_id) = apps.get(&handle_id)
{
debug!("Setting focused app to: {app_id}");
*focused = Some(app_id.clone());
FOCUSED_APP.store(Some(Arc::new(app_id.clone())));
}
}
},