Mark some idle jobs as low priority

This provides another improvement in startup performance, even with cold
caches. The deferred code should now be completely absent from a startup
profile.

Author: friedelwolff

virtaal/controllers/welcomescreencontroller.py

@@ -2,6 +2,7 @@
 # -*- coding: utf-8 -*-
 #
 # Copyright 2008-2011 Zuza Software Foundation
+# Copyright 2014 F Wolff
 #
 # This file is part of Virtaal.
 #
@@ -55,8 +56,8 @@ def __init__(self, main_controller):
     def activate(self):
         """Show the welcome screen and trigger activation logic (ie. find
             recent files)."""
-        from gobject import idle_add
-        idle_add(self.update_recent)
+        import gobject
+        gobject.idle_add(self.update_recent, priority=gobject.PRIORITY_LOW)
         self.view.show()
 
     def open_cheatsheat(self):

virtaal/main.py

@@ -2,7 +2,7 @@
 # -*- coding: utf-8 -*-
 #
 # Copyright 2008-2011 Zuza Software Foundation
-# Copyright 2013 F Wolff
+# Copyright 2013-2014 F Wolff
 #
 # This file is part of Virtaal.
 #
@@ -49,7 +49,7 @@ def next_job():
 
         if not self._todo:
             # No existing jobs, so start one
-            gobject.idle_add(next_job)
+            gobject.idle_add(next_job, priority=gobject.PRIORITY_LOW)
         self._todo.append((func, args))
 
 

virtaal/views/mainview.py

@@ -189,8 +189,8 @@ class "GtkTreeView" style "show-rules"
         self._setup_key_bindings()
         self._track_window_state()
         self._setup_dnd()
-        from gobject import idle_add
-        idle_add(self._setup_recent_files)
+        import gobject
+        gobject.idle_add(self._setup_recent_files, priority=gobject.PRIORITY_LOW)
         self.main_window.connect('style-set', self._on_style_set)
 
     def _create_dialogs(self):