Imported Upstream version 0.9.10.0 upstream/0.9.10.0

1 files changed, 54 insertions, 0 deletions

diff --git a/libgsystem/gsystem-glib-compat.h b/libgsystem/gsystem-glib-compat.h
new file mode 100644
index 00000000..6fd59c65
--- /dev/null
+++ b/libgsystem/gsystem-glib-compat.h
@@ -0,0 +1,54 @@
+/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*-
+ *
+ * Copyright (C) 2012,2013 Colin Walters <walters@verbum.org>.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#ifndef __LIBGSYSTEM_GLIB_COMPAT__
+#define __LIBGSYSTEM_GLIB_COMPAT__
+
+#include <gio/gio.h>
+
+#if !GLIB_CHECK_VERSION(2,34,0)
+static inline void
+g_type_ensure (GType type)
+{
+  if (G_UNLIKELY (type == (GType)-1))
+    g_error ("can't happen");
+}
+
+#define g_clear_pointer(pp, destroy)	  \
+	G_STMT_START { \
+		G_STATIC_ASSERT (sizeof *(pp) == sizeof (gpointer)); \
+		/* Only one access, please */ \
+		gpointer *_pp = (gpointer *) (pp); \
+		gpointer _p; \
+		/* This assignment is needed to avoid a gcc warning */ \
+		GDestroyNotify _destroy = (GDestroyNotify) (destroy); \
+	  \
+		(void) (0 ? (gpointer) *(pp) : 0); \
+		do \
+			_p = g_atomic_pointer_get (_pp); \
+		while G_UNLIKELY (!g_atomic_pointer_compare_and_exchange (_pp, _p, NULL)); \
+	  \
+		if (_p) \
+			_destroy (_p); \
+	} G_STMT_END
+
+#endif
+
+#endif