From: Olivier Crête <olivier.crete@collabora.co.uk>
Date: Mon, 13 Jul 2009 16:13:10 +0000 (-0400)
Subject: glib-gen: Use g_once_init to protect enum registration
X-Git-Tag: upstream/20130618~201
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=fedaaee6fa5c0006f5b7264732cb4e29584ef100;p=platform%2Fupstream%2Fgst-common.git

glib-gen: Use g_once_init to protect enum registration

Make use that enums are only registered once by using g_once_init_enter/leave()
---

diff --git a/glib-gen.mak b/glib-gen.mak
index f9027da..e5fcde1 100644
--- a/glib-gen.mak
+++ b/glib-gen.mak
@@ -30,9 +30,9 @@ enum_headers=$(foreach h,$(glib_enum_headers),\n\#include \"$(h)\")
 	glib-mkenums \
 	--fhead "#include \"$*-enumtypes.h\"\n$(enum_headers)" \
 	--fprod "\n/* enumerations from \"@filename@\" */" \
-	--vhead "GType\n@enum_name@_get_type (void)\n{\n  static GType etype = 0;\n  if (etype == 0) {\n    static const G@Type@Value values[] = {"     \
+	--vhead "GType\n@enum_name@_get_type (void)\n{\n  static volatile gsize g_define_type_id__volatile = 0;\n  if (g_once_init_enter (&g_define_type_id__volatile)) {\n    static const G@Type@Value values[] = {"     \
 	--vprod "      { @VALUENAME@, \"@VALUENAME@\", \"@valuenick@\" }," \
-	--vtail "      { 0, NULL, NULL }\n    };\n    etype = g_@type@_register_static (\"@EnumName@\", values);\n  }\n  return etype;\n}\n" \
+	--vtail "      { 0, NULL, NULL }\n    };\n    GType g_define_type_id = g_@type@_register_static (\"@EnumName@\", values);\n    g_once_init_leave (&g_define_type_id__volatile, g_define_type_id);\n  }\n  return g_define_type_id__volatile;\n}\n" \
 	$^ > $@
 
 # a hack rule to make sure .Plo files exist because they get include'd