| 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 |