1 | /* |
2 | * Copyright © 2008 Ryan Lortie |
3 | * Copyright © 2010 Codethink Limited |
4 | * |
5 | * SPDX-License-Identifier: LGPL-2.1-or-later |
6 | * |
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. |
11 | * |
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. |
16 | * |
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/>. |
19 | * |
20 | * Author: Ryan Lortie <desrt@desrt.ca> |
21 | */ |
22 | |
23 | #ifndef __G_BITLOCK_H__ |
24 | #define __G_BITLOCK_H__ |
25 | |
26 | #include <glib/gtypes.h> |
27 | |
28 | #if !defined (__GLIB_H_INSIDE__) && !defined (GLIB_COMPILATION) |
29 | #error "Only <glib.h> can be included directly." |
30 | #endif |
31 | |
32 | G_BEGIN_DECLS |
33 | |
34 | GLIB_AVAILABLE_IN_ALL |
35 | void g_bit_lock (volatile gint *address, |
36 | gint lock_bit); |
37 | GLIB_AVAILABLE_IN_ALL |
38 | gboolean g_bit_trylock (volatile gint *address, |
39 | gint lock_bit); |
40 | GLIB_AVAILABLE_IN_ALL |
41 | void g_bit_unlock (volatile gint *address, |
42 | gint lock_bit); |
43 | |
44 | GLIB_AVAILABLE_IN_ALL |
45 | void g_pointer_bit_lock (volatile void *address, |
46 | gint lock_bit); |
47 | |
48 | GLIB_AVAILABLE_IN_2_80 |
49 | void g_pointer_bit_lock_and_get (gpointer address, |
50 | guint lock_bit, |
51 | guintptr *out_ptr); |
52 | |
53 | GLIB_AVAILABLE_IN_ALL |
54 | gboolean g_pointer_bit_trylock (volatile void *address, |
55 | gint lock_bit); |
56 | GLIB_AVAILABLE_IN_ALL |
57 | void g_pointer_bit_unlock (volatile void *address, |
58 | gint lock_bit); |
59 | |
60 | GLIB_AVAILABLE_IN_2_80 |
61 | gpointer g_pointer_bit_lock_mask_ptr (gpointer ptr, |
62 | guint lock_bit, |
63 | gboolean set, |
64 | guintptr preserve_mask, |
65 | gpointer preserve_ptr); |
66 | |
67 | GLIB_AVAILABLE_IN_2_80 |
68 | void g_pointer_bit_unlock_and_set (void *address, |
69 | guint lock_bit, |
70 | gpointer ptr, |
71 | guintptr preserve_mask); |
72 | |
73 | #ifdef __GNUC__ |
74 | |
75 | #define g_pointer_bit_lock(address, lock_bit) \ |
76 | (G_GNUC_EXTENSION ({ \ |
77 | G_STATIC_ASSERT (sizeof *(address) == sizeof (gpointer)); \ |
78 | g_pointer_bit_lock ((address), (lock_bit)); \ |
79 | })) |
80 | |
81 | #define g_pointer_bit_lock_and_get(address, lock_bit, out_ptr) \ |
82 | (G_GNUC_EXTENSION ({ \ |
83 | G_STATIC_ASSERT (sizeof *(address) == sizeof (gpointer)); \ |
84 | g_pointer_bit_lock_and_get ((address), (lock_bit), (out_ptr)); \ |
85 | })) |
86 | |
87 | #define g_pointer_bit_trylock(address, lock_bit) \ |
88 | (G_GNUC_EXTENSION ({ \ |
89 | G_STATIC_ASSERT (sizeof *(address) == sizeof (gpointer)); \ |
90 | g_pointer_bit_trylock ((address), (lock_bit)); \ |
91 | })) |
92 | |
93 | #define g_pointer_bit_unlock(address, lock_bit) \ |
94 | (G_GNUC_EXTENSION ({ \ |
95 | G_STATIC_ASSERT (sizeof *(address) == sizeof (gpointer)); \ |
96 | g_pointer_bit_unlock ((address), (lock_bit)); \ |
97 | })) |
98 | |
99 | #define g_pointer_bit_unlock_and_set(address, lock_bit, ptr, preserve_mask) \ |
100 | (G_GNUC_EXTENSION ({ \ |
101 | G_STATIC_ASSERT (sizeof *(address) == sizeof (gpointer)); \ |
102 | g_pointer_bit_unlock_and_set ((address), (lock_bit), (ptr), (preserve_mask)); \ |
103 | })) |
104 | |
105 | #endif |
106 | |
107 | G_END_DECLS |
108 | |
109 | #endif /* __G_BITLOCK_H_ */ |
110 | |