urcu/arch/generic: Use atomic builtins if configured
[urcu.git] / include / urcu / assert.h
1 // SPDX-FileCopyrightText: 2021 Francis Deslauriers <francis.deslauriers@efficios.com>
2 //
3 // SPDX-License-Identifier: MIT
4
5 #ifndef _URCU_ASSERT_H
6 #define _URCU_ASSERT_H
7
8 /*
9 * Userspace RCU assertion facilities.
10 */
11
12 #include <urcu/config.h>
13
14 /*
15 * Force usage of an expression to prevent unused expression compiler warning.
16 */
17 #define _urcu_use_expression(_expr) ((void) sizeof((void) (_expr), 0))
18
19 #ifdef NDEBUG
20 /*
21 * Vanilla assert() replacement. When NDEBUG is defined, the expression is
22 * consumed to prevent unused variable compile warnings.
23 */
24 # define urcu_posix_assert(_cond) _urcu_use_expression(_cond)
25 #else
26 # include <assert.h>
27 # define urcu_posix_assert(_cond) assert(_cond)
28 #endif
29
30 #if defined(DEBUG_RCU) || defined(CONFIG_RCU_DEBUG)
31
32 /*
33 * Enables debugging/expensive assertions to be used in fast paths and only
34 * enabled on demand. When disabled, the expression is consumed to prevent
35 * unused variable compile warnings.
36 */
37 # define urcu_assert_debug(_cond) urcu_posix_assert(_cond)
38 #else
39 # define urcu_assert_debug(_cond) _urcu_use_expression(_cond)
40 #endif
41
42 #endif /* _URCU_ASSERT_H */
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