[mutter] clutter/actor: Optionally trace allocations

[Marge Bot <marge-bot src gnome org>]

commit 6b1f49c153426731f60c2fef207e7a4ea9995d44
Author: Jonas Ådahl <jadahl gmail com>
Date:   Wed Feb 3 00:05:41 2021 +0100

    clutter/actor: Optionally trace allocations
    
    If 'detailed-trace' is enabled, trace the allocation of every actor every
    frame, and pass along the type and name of the actor to sysprof.
    
    Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1700>

 clutter/clutter/clutter-actor.c | 10 ++++++++++
 1 file changed, 10 insertions(+)
---
diff --git a/clutter/clutter/clutter-actor.c b/clutter/clutter/clutter-actor.c
index b471589a68..a8e5da59e8 100644
--- a/clutter/clutter/clutter-actor.c
+++ b/clutter/clutter/clutter-actor.c
@@ -9203,6 +9203,16 @@ clutter_actor_allocate (ClutterActor          *self,
       !clutter_actor_has_mapped_clones (self))
     return;
 
+  COGL_TRACE_SCOPED_ANCHOR (ClutterActorAllocate);
+
+  if (G_UNLIKELY (clutter_debug_flags & CLUTTER_DEBUG_DETAILED_TRACE))
+    {
+      COGL_TRACE_BEGIN_ANCHORED (ClutterActorAllocate,
+                                 "ClutterActor (allocate)");
+      COGL_TRACE_DESCRIBE (ClutterActorAllocate,
+                           _clutter_actor_get_debug_name (self));
+    }
+
   old_allocation = priv->allocation;
   real_allocation = *box;