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/* GLIB - Library of useful routines for C programming
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* g_atomic_*: atomic operations.
* Copyright (C) 2003 Sebastian Wilhelmi
*
* 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.
*/
/*
* Modified by the GLib Team and others 1997-2000. See the AUTHORS
* file for a list of people on the GLib Team. See the ChangeLog
* files for a list of changes. These files are distributed with
* GLib at ftp://ftp.gtk.org/pub/gtk/.
*/
#ifndef __G_ATOMIC_H__
#define __G_ATOMIC_H__
#include <glib/gtypes.h>
G_BEGIN_DECLS
gint g_atomic_int_exchange_and_add (gint *atomic,
gint val);
void g_atomic_int_add (gint *atomic,
gint val);
gboolean g_atomic_int_compare_and_exchange (gint *atomic,
gint oldval,
gint newval);
gboolean g_atomic_pointer_compare_and_exchange (gpointer *atomic,
gpointer oldval,
gpointer newval);
#ifdef G_ATOMIC_OP_MEMORY_BARRIER_NEEDED
gint g_atomic_int_get (gint *atomic);
gpointer g_atomic_pointer_get (gpointer *atomic);
#else /* !G_ATOMIC_OP_MEMORY_BARRIER_NEEDED */
# define g_atomic_int_get(atomic) (*(atomic))
# define g_atomic_pointer_get(atomic) (*(atomic))
#endif /* G_ATOMIC_OP_MEMORY_BARRIER_NEEDED */
#define g_atomic_int_inc(atomic) (g_atomic_int_add ((atomic), 1))
#define g_atomic_int_dec_and_test(atomic) \
(g_atomic_int_exchange_and_add ((atomic), -1) == 1)
G_END_DECLS
#endif /* __G_ATOMIC_H__ */
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