2 * Copyright © 2008 Ryan Lortie
3 * Copyright © 2010 Codethink Limited
5 * SPDX-License-Identifier: LGPL-2.1-or-later
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
20 * Author: Ryan Lortie <desrt@desrt.ca>
23 #ifndef __G_BITLOCK_H__
24 #define __G_BITLOCK_H__
26 #include <glib/gtypes.h>
28 #if !defined (__GLIB_H_INSIDE__) && !defined (GLIB_COMPILATION)
29 #error "Only <glib.h> can be included directly."
35 void g_bit_lock (volatile gint *address,
38 gboolean g_bit_trylock (volatile gint *address,
41 void g_bit_unlock (volatile gint *address,
45 void g_pointer_bit_lock (volatile void *address,
48 gboolean g_pointer_bit_trylock (volatile void *address,
51 void g_pointer_bit_unlock (volatile void *address,
56 #define g_pointer_bit_lock(address, lock_bit) \
57 (G_GNUC_EXTENSION ({ \
58 G_STATIC_ASSERT (sizeof *(address) == sizeof (gpointer)); \
59 g_pointer_bit_lock ((address), (lock_bit)); \
62 #define g_pointer_bit_trylock(address, lock_bit) \
63 (G_GNUC_EXTENSION ({ \
64 G_STATIC_ASSERT (sizeof *(address) == sizeof (gpointer)); \
65 g_pointer_bit_trylock ((address), (lock_bit)); \
68 #define g_pointer_bit_unlock(address, lock_bit) \
69 (G_GNUC_EXTENSION ({ \
70 G_STATIC_ASSERT (sizeof *(address) == sizeof (gpointer)); \
71 g_pointer_bit_unlock ((address), (lock_bit)); \
78 #endif /* __G_BITLOCK_H_ */