git.sesse.net Git - bcachefs-tools-debian/blob - c_src/include/linux/bug.h

   1 #ifndef __TOOLS_LINUX_BUG_H
   2 #define __TOOLS_LINUX_BUG_H
   3
   4 #include <assert.h>
   5 #include <stdio.h>
   6 #include <linux/compiler.h>
   7
   8 #ifdef CONFIG_VALGRIND
   9 #include <valgrind/memcheck.h>
  10
  11 #define DEBUG_MEMORY_FREED(p, len) VALGRIND_MAKE_MEM_UNDEFINED(p, len)
  12 #endif
  13
  14 #define BUILD_BUG_ON_NOT_POWER_OF_2(n)                  \
  15         BUILD_BUG_ON((n) == 0 || (((n) & ((n) - 1)) != 0))
  16 #define BUILD_BUG_ON_ZERO(e)    (sizeof(struct { int:-!!(e); }))
  17 #define BUILD_BUG_ON_NULL(e)    ((void *)sizeof(struct { int:-!!(e); }))
  18
  19 #define BUILD_BUG_ON(cond)      ((void)sizeof(char[1 - 2*!!(cond)]))
  20
  21 #define BUG()                   do { fflush(stdout); assert(0); unreachable(); } while (0)
  22 #define BUG_ON(cond)            assert(!(cond))
  23
  24 #define WARN(cond, fmt, ...)                                            \
  25 ({                                                                      \
  26         int __ret_warn_on = unlikely(!!(cond));                         \
  27         if (__ret_warn_on)                                              \
  28                 fprintf(stderr, "WARNING at " __FILE__ ":%d: " fmt "\n",\
  29                         __LINE__, ##__VA_ARGS__);                       \
  30         __ret_warn_on;                                                  \
  31 })
  32
  33 #define __WARN()                                                        \
  34 do {                                                                    \
  35         fprintf(stderr, "WARNING at " __FILE__ ":%d\n", __LINE__);      \
  36 } while (0)
  37
  38 #define WARN_ON(cond) ({                                                \
  39         int __ret_warn_on = unlikely(!!(cond));                         \
  40         if (__ret_warn_on)                                              \
  41                 __WARN();                                               \
  42         __ret_warn_on;                                                  \
  43 })
  44
  45 #define WARN_ONCE(cond, fmt, ...)                                       \
  46 ({                                                                      \
  47         static bool __warned;                                           \
  48         int __ret_warn_on = unlikely(!!(cond));                         \
  49         if (__ret_warn_on && !__warned) {                               \
  50                 __warned = true;                                        \
  51                 __WARN();                                               \
  52         }                                                               \
  53         __ret_warn_on;                                                  \
  54 })
  55
  56 #define WARN_ON_ONCE(cond) ({                                           \
  57         static bool __warned;                                           \
  58         int __ret_warn_on = unlikely(!!(cond));                         \
  59         if (__ret_warn_on && !__warned) {                               \
  60                 __warned = true;                                        \
  61                 __WARN();                                               \
  62         }                                                               \
  63         __ret_warn_on;                                                  \
  64 })
  65
  66 #endif /* __TOOLS_LINUX_BUG_H */