[gnome-builder/wip/chergert/headerbar] libide: add short-circuit for property notification

[Christian Hergert <chergert src gnome org>]

commit 1a6f244e975b6d066269b57111da61b65e70f374
Author: Christian Hergert <chergert redhat com>
Date:   Wed Jun 22 17:29:38 2016 -0700

    libide: add short-circuit for property notification

 libide/ide-object.c |   10 ++++++++++
 1 files changed, 10 insertions(+), 0 deletions(-)
---
diff --git a/libide/ide-object.c b/libide/ide-object.c
index da347a7..597eafb 100644
--- a/libide/ide-object.c
+++ b/libide/ide-object.c
@@ -607,6 +607,16 @@ ide_object_notify_in_main (gpointer    instance,
   g_return_if_fail (G_IS_OBJECT (instance));
   g_return_if_fail (pspec != NULL);
 
+  /*
+   * Short circuit if we can notify immediately without the round trip
+   * to the main loop.
+   */
+  if G_LIKELY (g_main_context_get_thread_default () == g_main_context_default ())
+    {
+      g_object_notify_by_pspec (instance, pspec);
+      return;
+    }
+
   notify = g_slice_alloc0 (sizeof *notify);
   notify->object = g_object_ref (instance);
   notify->pspec = g_param_spec_ref (pspec);