Generate capture bytecode on trigger reception
[lttng-tools.git] / src / common / bug.h
1 /*
2 * Copyright (C) 2010-2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
3 *
4 * SPDX-License-Identifier: MIT
5 *
6 */
7
8 #ifndef _LTTNG_BUG_H
9 #define _LTTNG_BUG_H
10
11 #include <urcu/compiler.h>
12 #include <stdio.h>
13 #include <stdlib.h>
14
15 #define LTTNG_BUG_ON(condition) \
16 do { \
17 if (caa_unlikely(condition)) { \
18 fprintf(stderr, \
19 "LTTng BUG in file %s, line %d.\n", \
20 __FILE__, __LINE__); \
21 exit(EXIT_FAILURE); \
22 } \
23 } while (0)
24
25 #define LTTNG_BUILD_BUG_ON(condition) \
26 ((void) sizeof(char[-!!(condition)]))
27
28 /**
29 * LTTNG_BUILD_RUNTIME_BUG_ON - check condition at build (if constant) or runtime
30 * @condition: the condition which should be false.
31 *
32 * If the condition is a constant and true, the compiler will generate a build
33 * error. If the condition is not constant, a BUG will be triggered at runtime
34 * if the condition is ever true. If the condition is constant and false, no
35 * code is emitted.
36 */
37 #define LTTNG_BUILD_RUNTIME_BUG_ON(condition) \
38 do { \
39 if (__builtin_constant_p(condition)) \
40 LTTNG_BUILD_BUG_ON(condition); \
41 else \
42 LTTNG_BUG_ON(condition); \
43 } while (0)
44
45 #endif
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