[gtk+] gsk: Add a way to reset profiler counters

[Matthias Clasen <matthiasc src gnome org>]

commit cfbd6b4b994f58997c0ee1b44ff9325648ecf660
Author: Matthias Clasen <mclasen redhat com>
Date:   Mon Sep 25 20:58:10 2017 -0400

    gsk: Add a way to reset profiler counters
    
    It is often useful to count things per-frame, and reset
    the counter afterwards.

 gsk/gskprofiler.c        |   26 +++++++++++++++++++++++++-
 gsk/gskprofilerprivate.h |    3 +++
 2 files changed, 28 insertions(+), 1 deletions(-)
---
diff --git a/gsk/gskprofiler.c b/gsk/gskprofiler.c
index bc73010..be83d66 100644
--- a/gsk/gskprofiler.c
+++ b/gsk/gskprofiler.c
@@ -207,6 +207,26 @@ gsk_profiler_counter_inc (GskProfiler *profiler,
 }
 
 void
+gsk_profiler_counter_set (GskProfiler *profiler,
+                          GQuark       counter_id,
+                          gint64       value)
+{
+  NamedCounter *counter;
+
+  g_return_if_fail (GSK_IS_PROFILER (profiler));
+
+  counter = gsk_profiler_get_counter (profiler, counter_id);
+  if (counter == NULL)
+    {
+      g_critical ("No counter '%s' (id:%d) found; did you forget to call gsk_profiler_add_counter()?",
+                  g_quark_to_string (counter_id), counter_id);
+      return;
+    }
+
+  counter->value = value;
+}
+
+void
 gsk_profiler_counter_add (GskProfiler *profiler,
                           GQuark       counter_id,
                           gint64       increment)
@@ -217,7 +237,11 @@ gsk_profiler_counter_add (GskProfiler *profiler,
 
   counter = gsk_profiler_get_counter (profiler, counter_id);
   if (counter == NULL)
-    return;
+    {
+      g_critical ("No counter '%s' (id:%d) found; did you forget to call gsk_profiler_add_counter()?",
+                  g_quark_to_string (counter_id), counter_id);
+      return;
+    }
 
   counter->value += increment;
 }
diff --git a/gsk/gskprofilerprivate.h b/gsk/gskprofilerprivate.h
index e30a810..ca0f445 100644
--- a/gsk/gskprofilerprivate.h
+++ b/gsk/gskprofilerprivate.h
@@ -25,6 +25,9 @@ void            gsk_profiler_counter_inc        (GskProfiler *profiler,
 void            gsk_profiler_counter_add        (GskProfiler *profiler,
                                                  GQuark       counter_id,
                                                  gint64       increment);
+void            gsk_profiler_counter_set        (GskProfiler *profiler,
+                                                 GQuark       counter_id,
+                                                 gint64       value);
 void            gsk_profiler_timer_begin        (GskProfiler *profiler,
                                                  GQuark       timer_id);
 gint64          gsk_profiler_timer_end          (GskProfiler *profiler,