perf(tray): batch menu rebuild into a single dispatch

Every menu API call runs on the main thread; invoked from a worker,
each call pays a blocking round-trip there and back (channel, event
loop hop, recv). Rebuilding the tray menu with proxy groups enabled
issued one round-trip per menu item — 200+ for a typical subscription —
and the per-call wait grows whenever the event loop is busy with
webview work.

Gather the async inputs (verge/clash/profiles snapshots, proxies and
runtime group order) on the caller's task, then build the menu and
attach it in a single run_on_main_thread closure where every item
constructs inline. Measured on a standalone tauri bench (5 groups x
40 nodes): a rebuild drops from ~6.2ms to ~1.6ms on an idle event
loop and from ~11.4ms to ~1.6ms with the loop busy (8ms of work per
16ms frame), with ~450 fewer allocations (~155KB) per rebuild.

src-tauri/src/core/tray/mod.rs

@@ -1,4 +1,4 @@
-use crate::config::{IProfilePreview, IVerge};
+use crate::config::{IProfilePreview, IProfiles, IVerge};
 use crate::core::lightweight;
 use crate::core::tray::menu_def::TrayAction;
 use crate::process::AsyncHandler;
@@ -41,7 +41,10 @@ const TRAY_CLICK_DEBOUNCE_MS: u64 = 300;
 pub const TRAY_ID: &str = "clash-verge-rev-tray";
 
 #[derive(Clone, Copy)]
-struct TrayMenuOptions {
+struct TrayMenuOptions<'a> {
+    mode: Option<&'a str>,
+    system_proxy_enabled: bool,
+    tun_mode_enabled: bool,
     is_lightweight_mode: bool,
     include_proxy_groups: bool,
 }
@@ -201,9 +204,8 @@ impl Tray {
         };
 
         let verge = Config::verge().await.latest_arc();
-        let system_proxy = verge.enable_system_proxy.as_ref().unwrap_or(&false);
+        let system_proxy = verge.enable_system_proxy.unwrap_or(false);
-        let tun_mode = verge.enable_tun_mode.as_ref().unwrap_or(&false);
+        let tun_mode = verge.enable_tun_mode.unwrap_or(false);
-        let tun_mode_available = crate::core::runstate::RUN_STATE.state().tun_capable();
         let mode = {
             Config::clash()
                 .await
@@ -214,29 +216,73 @@ impl Tray {
                 .unwrap_or("rule")
                 .to_owned()
         };
-        let profiles_config = Config::profiles().await;
-        let profiles_arc = profiles_config.latest_arc();
-        let profiles_preview = profiles_arc.profiles_preview().unwrap_or_default();
         let is_lightweight_mode = is_in_lightweight_mode();
 
-        logging_error!(
+        let fetch_proxy_groups =
-            Type::Tray,
+            include_proxy_groups && verge.tray_proxy_groups_display_mode.as_deref() != Some("disable");
-            tray.set_menu(Some(
+
-                create_tray_menu(
+        // TODO: should update tray menu again when it was timeout error
-                    app_handle,
+        let (proxy_nodes_data, runtime_proxy_groups_order) = if fetch_proxy_groups {
-                    Some(mode.as_str()),
+            let proxy_nodes_data =
-                    *system_proxy,
+                tokio::time::timeout(Duration::from_millis(1000), handle::Handle::mihomo().get_proxies())
-                    *tun_mode,
+                    .await
-                    tun_mode_available,
+                    .map_or(None, |res| res.ok());
-                    profiles_preview,
+
+            let runtime = Config::runtime().await.latest_arc();
+            let runtime_proxy_groups_order = runtime.config.as_ref().map(|config| {
+                config
+                    .get("proxy-groups")
+                    .and_then(|groups| groups.as_sequence())
+                    .map(|groups| {
+                        groups
+                            .iter()
+                            .filter_map(|group| group.get("name"))
+                            .filter_map(|name| name.as_str())
+                            .enumerate()
+                            .map(|(index, name)| (name.into(), index))
+                            .collect::<HashMap<String, usize>>()
+                    })
+                    .unwrap_or_default()
+            });
+
+            (proxy_nodes_data, runtime_proxy_groups_order)
+        } else {
+            (None, None)
+        };
+
+        let verge = if fetch_proxy_groups {
+            Config::verge().await.latest_arc()
+        } else {
+            verge
+        };
+        let profiles = Config::profiles().await.latest_arc();
+
+        let (tx, rx) = tokio::sync::oneshot::channel();
+        let dispatch_handle = app_handle.clone();
+        app_handle
+            .run_on_main_thread(move || {
+                let _ = tx.send((|| -> Result<()> {
+                    let menu = build_tray_menu(
+                        &dispatch_handle,
                         TrayMenuOptions {
+                            mode: Some(mode.as_str()),
+                            system_proxy_enabled: system_proxy,
+                            tun_mode_enabled: tun_mode,
                             is_lightweight_mode,
                             include_proxy_groups,
                         },
-                )
+                        &verge,
-                .await?,
+                        &profiles,
-            ))
+                        runtime_proxy_groups_order,
-        );
+                        proxy_nodes_data,
+                    )?;
+                    logging_error!(Type::Tray, tray.set_menu(Some(menu)));
+                    Ok(())
+                })());
+            })
+            .map_err(|e| anyhow::anyhow!("Failed to dispatch tray menu update: {e}"))?;
+        rx.await
+            .map_err(|_| anyhow::anyhow!("Tray menu update returned no result"))??;
 
         logging!(debug, Type::Tray, "托盘菜单更新成功");
         Ok(())
@@ -585,53 +631,16 @@ fn create_proxy_menu_item(
     Ok((proxies_submenu, inline_proxy_items))
 }
 
-async fn create_tray_menu(
+fn build_tray_menu(
     app_handle: &AppHandle,
-    mode: Option<&str>,
+    options: TrayMenuOptions<'_>,
-    system_proxy_enabled: bool,
+    verge_settings: &IVerge,
-    tun_mode_enabled: bool,
+    profiles_config: &IProfiles,
-    tun_mode_available: bool,
+    proxy_group_order_map: Option<HashMap<String, usize>>,
-    profiles_preview: Vec<IProfilePreview<'_>>,
+    proxy_nodes_data: Option<Proxies>,
-    options: TrayMenuOptions,
 ) -> Result<tauri::menu::Menu<Wry>> {
-    let current_proxy_mode = mode.unwrap_or("");
+    let current_proxy_mode = options.mode.unwrap_or("");
-
+    let tun_mode_available = crate::core::runstate::RUN_STATE.state().tun_capable();
-    let mut verge_settings = Config::verge().await.latest_arc();
-    let fetch_proxy_groups =
-        options.include_proxy_groups && verge_settings.tray_proxy_groups_display_mode.as_deref() != Some("disable");
-
-    // TODO: should update tray menu again when it was timeout error
-    let (proxy_nodes_data, runtime_proxy_groups_order) = if fetch_proxy_groups {
-        let proxy_nodes_data =
-            tokio::time::timeout(Duration::from_millis(1000), handle::Handle::mihomo().get_proxies())
-                .await
-                .map_or(None, |res| res.ok());
-
-        let runtime = Config::runtime().await.latest_arc();
-        let runtime_proxy_groups_order = runtime.config.as_ref().map(|config| {
-            config
-                .get("proxy-groups")
-                .and_then(|groups| groups.as_sequence())
-                .map(|groups| {
-                    groups
-                        .iter()
-                        .filter_map(|group| group.get("name"))
-                        .filter_map(|name| name.as_str())
-                        .enumerate()
-                        .map(|(index, name)| (name.into(), index))
-                        .collect::<HashMap<String, usize>>()
-                })
-                .unwrap_or_default()
-        });
-
-        (proxy_nodes_data, runtime_proxy_groups_order)
-    } else {
-        (None, None)
-    };
-
-    if fetch_proxy_groups {
-        verge_settings = Config::verge().await.latest_arc();
-    }
 
     let tray_proxy_groups_display_mode = verge_settings
         .tray_proxy_groups_display_mode
@@ -639,15 +648,14 @@ async fn create_tray_menu(
         .unwrap_or("default");
     let include_proxy_groups = options.include_proxy_groups && tray_proxy_groups_display_mode != "disable";
 
-    let proxy_group_order_map = runtime_proxy_groups_order;
-
     let show_outbound_modes_inline = verge_settings.tray_inline_outbound_modes.unwrap_or(false);
 
     let version = env!("CARGO_PKG_VERSION");
 
     let hotkeys = create_hotkeys(&verge_settings.hotkeys);
 
-    let profile_menu_items: Vec<CheckMenuItem<Wry>> = create_profile_menu_item(app_handle, profiles_preview)?;
+    let profile_menu_items: Vec<CheckMenuItem<Wry>> =
+        create_profile_menu_item(app_handle, profiles_config.profiles_preview().unwrap_or_default())?;
 
     let texts = MenuTexts::new();
     let profile_menu_items_refs: Vec<&dyn IsMenuItem<Wry>> = profile_menu_items
@@ -738,7 +746,7 @@ async fn create_tray_menu(
         MenuIds::SYSTEM_PROXY,
         &texts.system_proxy,
         true,
-        system_proxy_enabled,
+        options.system_proxy_enabled,
         hotkeys.get("toggle_system_proxy").copied(),
     )?;
 
@@ -747,7 +755,7 @@ async fn create_tray_menu(
         MenuIds::TUN_MODE,
         &texts.tun_mode,
         tun_mode_available,
-        tun_mode_enabled,
+        options.tun_mode_enabled,
         hotkeys.get("toggle_tun_mode").copied(),
     )?;