12 # define WIMLIBAPI __attribute__((visibility("default")))
13 # define ALWAYS_INLINE inline __attribute__((always_inline))
14 # define PACKED __attribute__((packed))
15 # define FORMAT(type, format_str, args_start) \
16 __attribute__((format(type, format_str, args_start)))
17 # if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4)
18 # define COLD __attribute__((cold))
24 # define ALWAYS_INLINE inline
25 # define FORMAT(type, format_str, args_start)
33 #define atomic_inc(ptr) \
34 __sync_fetch_and_add(ptr, 1)
36 #define atomic_dec(ptr) \
37 __sync_sub_and_fetch(ptr, 1)
47 typedef unsigned uint;
50 #define min(a, b) ({ typeof(a) __a = (a); typeof(b) __b = (b); \
51 (__a < __b) ? __a : __b; })
55 #define max(a, b) ({ typeof(a) __a = (a); typeof(b) __b = (b); \
56 (__a > __b) ? __a : __b; })
60 #define swap(a, b) ({typeof(a) _a = a; (a) = (b); (b) = _a;})
64 * container_of - cast a member of a structure out to the containing structure
65 * @ptr: the pointer to the member.
66 * @type: the type of the container struct this is embedded in.
67 * @member: the name of the member within the struct.
71 #define container_of(ptr, type, member) ({ \
72 const typeof( ((type *)0)->member ) *__mptr = (ptr); \
73 (type *)( (char *)__mptr - offsetof(type,member) );})
76 #define DIV_ROUND_UP(numerator, denominator) \
77 (((numerator) + (denominator) - 1) / (denominator))
79 #define MODULO_NONZERO(numerator, denominator) \
80 (((numerator) % (denominator)) ? ((numerator) % (denominator)) : (denominator))
82 #define ARRAY_LEN(array) (sizeof(array) / sizeof((array)[0]))
84 #define ZERO_ARRAY(array) memset(array, 0, sizeof(array))
86 /* Used for buffering FILE IO in a few places */
87 #define BUFFER_SIZE 4096
89 #ifdef ENABLE_ERROR_MESSAGES
90 extern bool __wimlib_print_errors;
91 extern void wimlib_error(const char *format, ...)
92 FORMAT(printf, 1, 2) COLD;
93 extern void wimlib_error_with_errno(const char *format, ...)
94 FORMAT(printf, 1, 2) COLD;
95 extern void wimlib_warning(const char *format, ...)
96 FORMAT(printf, 1, 2) COLD;
97 # define ERROR wimlib_error
98 # define ERROR_WITH_ERRNO wimlib_error_with_errno
99 # define WARNING wimlib_warning
101 # define ERROR(format, ...)
102 # define ERROR_WITH_ERRNO(format, ...)
103 # define WARNING(format, ...)
104 #endif /* ENABLE_ERROR_MESSAGES */
106 #if defined(ENABLE_DEBUG) || defined(ENABLE_MORE_DEBUG)
108 # define DEBUG(format, ...) \
110 int __errno_save = errno; \
111 fprintf(stdout, "[%s %d] %s(): " format, \
112 __FILE__, __LINE__, __func__, ## __VA_ARGS__); \
115 errno = __errno_save; \
119 # define DEBUG(format, ...)
120 #endif /* ENABLE_DEBUG || ENABLE_MORE_DEBUG */
122 #ifdef ENABLE_MORE_DEBUG
123 # define DEBUG2(format, ...) DEBUG(format, ## __VA_ARGS__)
125 # define DEBUG2(format, ...)
126 #endif /* ENABLE_DEBUG */
128 #ifdef ENABLE_ASSERTIONS
130 # define wimlib_assert(expr) assert(expr)
132 # define wimlib_assert(expr)
136 #ifdef ENABLE_CUSTOM_MEMORY_ALLOCATOR
137 extern void *(*wimlib_malloc_func)(size_t);
138 extern void (*wimlib_free_func)(void *);
139 extern void *(*wimlib_realloc_func)(void *, size_t);
140 extern void *wimlib_calloc(size_t nmemb, size_t size);
141 extern char *wimlib_strdup(const char *str);
142 # define MALLOC wimlib_malloc_func
143 # define FREE wimlib_free_func
144 # define REALLOC wimlib_realloc_func
145 # define CALLOC wimlib_calloc
146 # define STRDUP wimlib_strdup
150 # define MALLOC malloc
152 # define REALLOC realloc
153 # define CALLOC calloc
154 # define STRDUP strdup
155 #endif /* ENABLE_CUSTOM_MEMORY_ALLOCATOR */
159 extern int utf16_to_utf8(const char *utf16_str, size_t utf16_nbytes,
160 char **utf8_str_ret, size_t *utf8_nbytes_ret);
162 extern int utf8_to_utf16(const char *utf8_str, size_t utf8_nbytes,
163 char **utf16_str_ret, size_t *utf16_nbytes_ret);
166 extern void randomize_byte_array(u8 *p, size_t n);
168 extern void randomize_char_array_with_alnum(char p[], size_t n);
170 extern const char *path_next_part(const char *path,
171 size_t *first_part_len_ret);
173 extern const char *path_basename(const char *path);
175 extern const char *path_stream_name(const char *path);
177 extern void to_parent_name(char buf[], size_t len);
179 extern void print_string(const void *string, size_t len);
181 extern int get_num_path_components(const char *path);
183 static inline void print_byte_field(const u8 field[], size_t len)
186 printf("%02hhx", *field++);
189 static inline u32 bsr32(u32 n)
191 #if defined(__x86__) || defined(__x86_64__)
198 while ((n >>= 1) != 0)
204 #endif /* _WIMLIB_UTIL_H */