/* 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__ */