Merge lp:~alcinnz/slingshot/performance into lp:~elementary-pantheon/slingshot/trunk

[Adrian Cochrane]

I wrapped the initial load of the application menu in a thread, so it doesn't held up the rest of Wingpanel.

Given there isn't a mainloop in that new thread the events should be delivered on the main one.

=== modified file 'src/Backend/AppSystem.vala'
--- src/Backend/AppSystem.vala	2017-02-15 13:14:11 +0000
+++ src/Backend/AppSystem.vala	2017-02-20 04:25:24 +0000
@@ -43,7 +43,12 @@
         apps = new Gee.HashMap<string, Gee.ArrayList<App>> ();
         categories = new Gee.ArrayList<GMenu.TreeDirectory> ();
 
-        update_app_system ();
+        // Update app system, and it's underlying GMenu.Tree.load_sync
+        // Takes a while to run the first time, so wrap in a thread
+        new Thread<bool> ("menu-loader", () => {
+            this.update_app_system ();
+            return true; // We need some return values
+        });
     }
 
     private void update_app_system () {
@@ -144,4 +149,4 @@
 
         return sorted_apps;
     }
-}
\ No newline at end of file
+}