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/* -*- 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
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