source: mainline/kernel/generic/include/atomic.h@ 95658c9

ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since 95658c9 was 31e15be, checked in by jxsvoboda <5887334+jxsvoboda@…>, 4 years ago

kernel: deprecate atomic_t

  • Property mode set to 100644
File size: 2.1 KB
Line 
1/*
2 * Copyright (c) 2006 Jakub Jermar
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * - Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * - Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * - The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29/** @addtogroup kernel_generic
30 * @{
31 */
32/** @file
33 */
34
35#ifndef KERN_ATOMIC_H_
36#define KERN_ATOMIC_H_
37
38#include <stdbool.h>
39#include <typedefs.h>
40#include <stdatomic.h>
41
42#define atomic_predec(val) \
43 (atomic_fetch_sub((val), 1) - 1)
44
45#define atomic_preinc(val) \
46 (atomic_fetch_add((val), 1) + 1)
47
48#define atomic_postdec(val) \
49 atomic_fetch_sub((val), 1)
50
51#define atomic_postinc(val) \
52 atomic_fetch_add((val), 1)
53
54#define atomic_dec(val) \
55 ((void) atomic_fetch_sub(val, 1))
56
57#define atomic_inc(val) \
58 ((void) atomic_fetch_add(val, 1))
59
60#define local_atomic_exchange(var_addr, new_val) \
61 atomic_exchange_explicit( \
62 (_Atomic typeof(*(var_addr)) *) (var_addr), \
63 (new_val), memory_order_relaxed)
64
65#endif
66
67/** @}
68 */
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