[gtk] Add clock freezes to the profile

[Matthias Clasen <matthiasc src gnome org>]

commit 7e59ec4afcd8667e2ea4128acb3e321132838e86
Author: Matthias Clasen <mclasen redhat com>
Date:   Thu May 16 20:50:31 2019 +0000

    Add clock freezes to the profile

 gdk/gdkframeclockidle.c | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)
---
diff --git a/gdk/gdkframeclockidle.c b/gdk/gdkframeclockidle.c
index bb1e9c359c..92f5449f93 100644
--- a/gdk/gdkframeclockidle.c
+++ b/gdk/gdkframeclockidle.c
@@ -42,6 +42,9 @@ struct _GdkFrameClockIdlePrivate
   gint64 frame_time;
   gint64 min_next_frame_time;
   gint64 sleep_serial;
+#ifdef G_ENABLE_DEBUG
+  gint64 freeze_time;
+#endif
 
   guint flush_idle_id;
   guint paint_idle_id;
@@ -558,6 +561,14 @@ gdk_frame_clock_idle_freeze (GdkFrameClock *clock)
   GdkFrameClockIdle *clock_idle = GDK_FRAME_CLOCK_IDLE (clock);
   GdkFrameClockIdlePrivate *priv = clock_idle->priv;
 
+#ifdef G_ENABLE_DEBUG
+  if (priv->freeze_count == 0)
+    {
+      if (gdk_profiler_is_running ())
+        priv->freeze_time = g_get_monotonic_time ();
+    }
+#endif
+
   priv->freeze_count++;
   maybe_stop_idle (clock_idle);
 }
@@ -582,6 +593,20 @@ gdk_frame_clock_idle_thaw (GdkFrameClock *clock)
         priv->phase = GDK_FRAME_CLOCK_PHASE_NONE;
 
       priv->sleep_serial = get_sleep_serial ();
+
+#ifdef G_ENABLE_DEBUG
+      if (gdk_profiler_is_running ())
+        {
+          if (priv->freeze_time != 0)
+            {
+              gint64 thaw_time = g_get_monotonic_time ();
+              gdk_profiler_add_mark (priv->freeze_time * 1000,
+                                     (thaw_time - priv->freeze_time) * 1000,
+                                     "freeze", "");
+              priv->freeze_time = 0;
+            }
+        }
+#endif
     }
 }