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bug.h revamp, easier to use

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This commit is contained in:
Bruno Raoult
2024-07-15 08:18:35 +02:00
parent a48ebf9099
commit 180839c960
1 changed files with 36 additions and 50 deletions
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76
include/bug.h
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@@ -11,20 +11,7 @@
* *
*/ */
/* we allow multiple inclusions, so that BUG_ON/WARN_ON can change during #ifndef BUG_H
* compilation.
*/
#ifdef BUG_H
#undef BUG_H
/* reset all macros */
#undef bug_on
#undef warn_on
#undef warn
#endif /* BUG_H */
#define BUG_H #define BUG_H
#include <stdio.h> #include <stdio.h>
@@ -32,44 +19,43 @@
#include <stdbool.h> #include <stdbool.h>
#include <stdarg.h> #include <stdarg.h>
#ifndef BUG_ON #define bug_on_always(expr) do { \
#define BUG_ON 0 if (expr) { \
#endif
#ifndef WARN_ON
#define WARN_ON 0
#endif
#include "likely.h"
#if (BUG_ON + 0 == 1)
#define bug_on(expr) do { \
if (unlikely(expr)) { \
fprintf(stderr, \ fprintf(stderr, \
"** BUG IN %s[%s:%d]: assertion \"" #expr "\" failed.\n", \ "** BUG ON %s[%s:%d]: assertion '%s' failed.\n", \
__func__, __FILE__,__LINE__); \ __func__, __FILE__,__LINE__, #expr); \
abort(); \ abort(); \
/* not reached */ \
} \ } \
} while (0) } while (0)
#else
#define bug_on(expr)
#endif
#if (WARN_ON + 0 == 1)
#define warn_on(expr) ({ \
int _ret = !!(expr); \
if (unlikely(_ret)) \
fprintf(stderr, \
"** WARN ON %s[%s:%d]: assertion \"" #expr "\" failed.\n", \
__func__, __FILE__,__LINE__); \
_ret; \
})
#else
#define warn_on(expr) ({ 0; })
#endif
#define warn(expr, args...) ({ \ #define warn(expr, args...) ({ \
int _ret = !!(expr); \ int _ret = !!(expr); \
if (unlikely(_ret)) \ if (_ret) \
fprintf(stderr, ##args); \ fprintf(stderr, ##args); \
_ret; \ _ret; \
}) })
#define warn_on_always(expr) ({ \
warn(expr, \
"** WARN ON %s[%s:%d]: assertion '%s' failed.\n", \
__func__, __FILE__,__LINE__, #expr); \
})
#ifdef BUG_ON
#define bug_on(expr) bug_on_always(expr)
#define warn_on(expr) warn_on_always(expr)
#define warn_on_or_eval(expr) warn_on(expr)
#else
#define bug_on(expr)
#define warn_on(expr)
#define warn_on_or_eval(expr) (expr)
#endif /* BUG_ON */
#endif /* BUG_H */