[gtk/matthiasc/for-master: 6/6] Add profiler support for css validation

[Matthias Clasen <matthiasc src gnome org>]

commit a350c2452af517dff4a94ac3c0aef7ebbeba8962
Author: Matthias Clasen <mclasen redhat com>
Date:   Mon Jan 20 20:08:41 2020 -0500

    Add profiler support for css validation
    
    Push numbers about css validation and style creation
    to sysprof.

 gtk/gtkcssnode.c | 43 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 43 insertions(+)
---
diff --git a/gtk/gtkcssnode.c b/gtk/gtkcssnode.c
index 4fe350d5ff..72de82941e 100644
--- a/gtk/gtkcssnode.c
+++ b/gtk/gtkcssnode.c
@@ -27,6 +27,7 @@
 #include "gtksettingsprivate.h"
 #include "gtktypebuiltins.h"
 #include "gtkprivate.h"
+#include "gdkprofilerprivate.h"
 
 /*
  * CSS nodes are the backbone of the GtkStyleContext implementation and
@@ -122,6 +123,13 @@ gtk_css_node_get_style_provider_or_null (GtkCssNode *cssnode)
   return GTK_CSS_NODE_GET_CLASS (cssnode)->get_style_provider (cssnode);
 }
 
+#ifdef G_ENABLE_DEBUG
+static int invalidated_nodes;
+static int created_styles;
+static guint invalidated_nodes_counter;
+static guint created_styles_counter;
+#endif
+
 static void
 gtk_css_node_set_invalid (GtkCssNode *node,
                           gboolean    invalid)
@@ -131,6 +139,11 @@ gtk_css_node_set_invalid (GtkCssNode *node,
 
   node->invalid = invalid;
 
+#ifdef G_ENABLE_DEBUG
+  if (invalid)
+    invalidated_nodes++;
+#endif
+
   if (node->visible)
     {
       if (node->parent)
@@ -369,6 +382,10 @@ gtk_css_node_create_style (GtkCssNode   *cssnode,
   if (style)
     return g_object_ref (style);
 
+#ifdef G_ENABLE_DEBUG
+  created_styles++;
+#endif
+
   parent = cssnode->parent ? cssnode->parent->style : NULL;
 
   if (change & GTK_CSS_CHANGE_NEEDS_RECOMPUTE)
@@ -665,6 +682,14 @@ gtk_css_node_class_init (GtkCssNodeClass *klass)
                         | G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS);
 
   g_object_class_install_properties (object_class, NUM_PROPERTIES, cssnode_properties);
+
+#ifdef G_ENABLE_DEBUG
+  if (invalidated_nodes_counter == 0)
+    {
+      invalidated_nodes_counter = gdk_profiler_define_int_counter ("invalidated-nodes", "CSS Node 
Invalidations");
+      created_styles_counter = gdk_profiler_define_int_counter ("created-styles", "CSS Style Creations");
+    }
+#endif
 }
 
 static void
@@ -1379,10 +1404,28 @@ void
 gtk_css_node_validate (GtkCssNode *cssnode)
 {
   gint64 timestamp;
+#ifdef G_ENABLE_DEBUG
+  gint64 before = g_get_monotonic_time ();
+#endif
 
   timestamp = gtk_css_node_get_timestamp (cssnode);
 
   gtk_css_node_validate_internal (cssnode, timestamp);
+
+#ifdef G_ENABLE_DEBUG
+  if (cssnode->parent == NULL)
+    {
+      if (gdk_profiler_is_running ())
+        {
+          gint64 after = g_get_monotonic_time ();
+          gdk_profiler_add_mark (before * 1000, (after - before) * 1000, "style", "");
+          gdk_profiler_set_int_counter (invalidated_nodes_counter, after * 1000, invalidated_nodes);
+          gdk_profiler_set_int_counter (created_styles_counter, after * 1000, created_styles);
+          invalidated_nodes = 0;
+          created_styles = 0;
+        }
+    }
+#endif
 }
 
 gboolean