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

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