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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);
-
- gint g_atomic_int_get (gint *atomic);
- gpointer g_atomic_pointer_get (gpointer *atomic);
-
- #ifndef 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__ */
-