[json-glib] Update the enum types templates

[Emmanuele Bassi <ebassi src gnome org>]

commit 5778210462b8b7a1a5d98466508276f712ea8c47
Author: Emmanuele Bassi <ebassi linux intel com>
Date:   Sat May 16 13:53:58 2009 +0100

    Update the enum types templates
    
    The autogenerated enumeration types registration code should
    be using the same pattern used by the G_DEFINE_TYPE() macros,
    with GOnce to enable atomic (and thread-safe) type registration.
---
 json-glib/json-enum-types.c.in |   18 +++++++++++++-----
 1 files changed, 13 insertions(+), 5 deletions(-)

diff --git a/json-glib/json-enum-types.c.in b/json-glib/json-enum-types.c.in
index 3578c6e..eba4222 100644
--- a/json-glib/json-enum-types.c.in
+++ b/json-glib/json-enum-types.c.in
@@ -3,15 +3,18 @@
 /*** END file-header ***/
 
 /*** BEGIN file-production ***/
+
 /* enumerations from "@filename@" */
 #include "@filename@"
+
 /*** END file-production ***/
 
 /*** BEGIN value-header ***/
 GType
 @enum_name _get_type(void) {
-  static GType etype = 0;
-  if (G_UNLIKELY (!etype))
+  static volatile gsize g_enum_type_id__volatile = 0;
+
+  if (g_once_init_enter (&g_enum_type_id__volatile))
     {
       const G Type@Value values[] = {
 /*** END value-header ***/
@@ -23,9 +26,14 @@ GType
 /*** BEGIN value-tail ***/
         { 0, NULL, NULL }
       };
-      etype = g_ type@_register_static (g_intern_static_string ("@EnumName@"), values);
+      GType g_enum_type_id;
+
+      g_enum_type_id =
+        g_ type@_register_static (g_intern_static_string ("@EnumName@"), values);
+
+      g_once_init_leave (&g_enum_type_id__volatile, g_enum_type_id);
     }
-  return etype;
-}
 
+  return g_enum_type_id__volatile;
+}
 /*** END value-tail ***/