| /* 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/. |
| */ |
| |
| #if defined(G_DISABLE_SINGLE_INCLUDES) && !defined (__GLIB_H_INSIDE__) && !defined (GLIB_COMPILATION) |
| #error "Only <glib.h> can be included directly." |
| #endif |
| |
| #ifndef __G_ATOMIC_H__ |
| #define __G_ATOMIC_H__ |
| |
| #include <glib/gtypes.h> |
| |
| G_BEGIN_DECLS |
| |
| gint g_atomic_int_exchange_and_add (volatile gint *atomic, |
| gint val); |
| void g_atomic_int_add (volatile gint *atomic, |
| gint val); |
| gboolean g_atomic_int_compare_and_exchange (volatile gint *atomic, |
| gint oldval, |
| gint newval); |
| gboolean g_atomic_pointer_compare_and_exchange (volatile gpointer *atomic, |
| gpointer oldval, |
| gpointer newval); |
| |
| gint g_atomic_int_get (volatile gint *atomic); |
| void g_atomic_int_set (volatile gint *atomic, |
| gint newval); |
| gpointer g_atomic_pointer_get (volatile gpointer *atomic); |
| void g_atomic_pointer_set (volatile gpointer *atomic, |
| gpointer newval); |
| |
| #ifndef G_ATOMIC_OP_MEMORY_BARRIER_NEEDED |
| # define g_atomic_int_get(atomic) (*(atomic)) |
| # define g_atomic_int_set(atomic, newval) ((void) (*(atomic) = (newval))) |
| # define g_atomic_pointer_get(atomic) (*(atomic)) |
| # define g_atomic_pointer_set(atomic, newval) ((void) (*(atomic) = (newval))) |
| #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__ */ |