[mutter/wip/chergert/clock-trace] clutter: add tracing for frameclock cycle

[Christian Hergert <chergert src gnome org>]

commit be2fdfec26a8d9959705ef7643a1dca3a691949b
Author: Christian Hergert <chergert redhat com>
Date:   Mon Feb 24 16:10:49 2020 -0800

    clutter: add tracing for frameclock cycle
    
    This adds a new frameclock tracing mark for a single cycle of the frame
    clock. Doing so allows Sysprof to potentially do more with the information
    that happens during the frameclock. For example, we can now find
    allocations that happen while the frameclock is advancing.
    
    https://gitlab.gnome.org/GNOME/mutter/merge_requests/1088

 clutter/clutter/clutter-master-clock-default.c | 6 ++++++
 1 file changed, 6 insertions(+)
---
diff --git a/clutter/clutter/clutter-master-clock-default.c b/clutter/clutter/clutter-master-clock-default.c
index 3197a32e3..f08904fa1 100644
--- a/clutter/clutter/clutter-master-clock-default.c
+++ b/clutter/clutter/clutter-master-clock-default.c
@@ -29,6 +29,8 @@
  * of #ClutterMasterClock.
  */
 
+#include <cogl/cogl-trace.h>
+
 #include "clutter-build-config.h"
 
 #include "clutter-master-clock.h"
@@ -461,6 +463,8 @@ clutter_clock_dispatch (GSource     *source,
 
   _clutter_threads_acquire_lock ();
 
+  COGL_TRACE_BEGIN (ClutterFrameCycle, "Single FrameClock Cycle");
+
   /* Get the time to use for this frame */
   master_clock->cur_tick = g_source_get_time (source);
 
@@ -492,6 +496,8 @@ clutter_clock_dispatch (GSource     *source,
 
   g_slist_free_full (stages, g_object_unref);
 
+  COGL_TRACE_END (ClutterFrameCycle);
+
   _clutter_threads_release_lock ();
 
   return TRUE;