[mutter] util: Implement meta_topic() using g_message()

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

commit 59166d745ea23dbd89f80e206e5a284feadb674a
Author: Jonas Ådahl <jadahl gmail com>
Date:   Mon Nov 15 18:23:59 2021 +0100

    util: Implement meta_topic() using g_message()
    
    This will get us things like timestamps.
    
    Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2094>

 src/core/util.c | 6 +++---
 src/meta/util.h | 8 ++++++--
 2 files changed, 9 insertions(+), 5 deletions(-)
---
diff --git a/src/core/util.c b/src/core/util.c
index 889ae4937a..df03d7faa3 100644
--- a/src/core/util.c
+++ b/src/core/util.c
@@ -274,8 +274,8 @@ meta_verbose_real (const char *format, ...)
   va_end (args);
 }
 
-static const char*
-topic_name (MetaDebugTopic topic)
+const char *
+meta_topic_to_string (MetaDebugTopic topic)
 {
   switch (topic)
     {
@@ -369,7 +369,7 @@ meta_topic_real_valist (MetaDebugTopic topic,
 
   out = logfile ? logfile : stderr;
 
-  fprintf (out, "%s: ", topic_name (topic));
+  fprintf (out, "%s: ", meta_topic_to_string (topic));
 
   if (topic == META_DEBUG_SYNC)
     {
diff --git a/src/meta/util.h b/src/meta/util.h
index d08bba4aac..876840a2d5 100644
--- a/src/meta/util.h
+++ b/src/meta/util.h
@@ -177,6 +177,8 @@ GPid meta_show_dialog (const char *type,
 /* To disable verbose mode, we make these functions into no-ops */
 #ifdef WITH_VERBOSE_MODE
 
+const char * meta_topic_to_string (MetaDebugTopic topic);
+
 #define meta_verbose(...) \
   G_STMT_START \
     { \
@@ -185,11 +187,13 @@ GPid meta_show_dialog (const char *type,
     } \
   G_STMT_END
 
-#define meta_topic(debug_topic,...) \
+#define meta_topic(debug_topic, ...) \
   G_STMT_START \
     { \
       if (meta_is_topic_enabled (debug_topic)) \
-        meta_topic_real (debug_topic, __VA_ARGS__); \
+        { \
+          g_message (__VA_ARGS__); \
+        } \
     } \
   G_STMT_END