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)
49 #define min(a, b) ({ typeof(a) __a = (a); typeof(b) __b = (b); \
50 (__a < __b) ? __a : __b; })
54 #define max(a, b) ({ typeof(a) __a = (a); typeof(b) __b = (b); \
55 (__a > __b) ? __a : __b; })
59 #define swap(a, b) ({typeof(a) _a = a; (a) = (b); (b) = _a;})
63 * container_of - cast a member of a structure out to the containing structure
64 * @ptr: the pointer to the member.
65 * @type: the type of the container struct this is embedded in.
66 * @member: the name of the member within the struct.
70 #define container_of(ptr, type, member) ({ \
71 const typeof( ((type *)0)->member ) *__mptr = (ptr); \
72 (type *)( (char *)__mptr - offsetof(type,member) );})
75 #define DIV_ROUND_UP(numerator, denominator) \
76 (((numerator) + (denominator) - 1) / (denominator))
78 #define MODULO_NONZERO(numerator, denominator) \
79 (((numerator) % (denominator)) ? ((numerator) % (denominator)) : (denominator))
81 #define ARRAY_LEN(array) (sizeof(array) / sizeof((array)[0]))
83 #define ZERO_ARRAY(array) memset(array, 0, sizeof(array))
85 /* Used for buffering FILE IO in a few places */
86 #define BUFFER_SIZE 4096
88 #ifdef ENABLE_ERROR_MESSAGES
89 extern bool __wimlib_print_errors;
90 extern void wimlib_error(const char *format, ...)
91 FORMAT(printf, 1, 2) COLD;
92 extern void wimlib_error_with_errno(const char *format, ...)
93 FORMAT(printf, 1, 2) COLD;
94 extern void wimlib_warning(const char *format, ...)
95 FORMAT(printf, 1, 2) COLD;
96 # define ERROR wimlib_error
97 # define ERROR_WITH_ERRNO wimlib_error_with_errno
98 # define WARNING wimlib_warning
100 # define ERROR(format, ...)
101 # define ERROR_WITH_ERRNO(format, ...)
102 # define WARNING(format, ...)
103 #endif /* ENABLE_ERROR_MESSAGES */
105 #if defined(ENABLE_DEBUG) || defined(ENABLE_MORE_DEBUG)
107 # define DEBUG(format, ...) \
109 int __errno_save = errno; \
110 fprintf(stdout, "[%s %d] %s(): " format, \
111 __FILE__, __LINE__, __func__, ## __VA_ARGS__); \
114 errno = __errno_save; \
118 # define DEBUG(format, ...)
119 #endif /* ENABLE_DEBUG || ENABLE_MORE_DEBUG */
121 #ifdef ENABLE_MORE_DEBUG
122 # define DEBUG2(format, ...) DEBUG(format, ## __VA_ARGS__)
124 # define DEBUG2(format, ...)
125 #endif /* ENABLE_DEBUG */
127 #ifdef ENABLE_ASSERTIONS
129 # define wimlib_assert(expr) assert(expr)
131 # define wimlib_assert(expr)
134 #ifdef ENABLE_MORE_ASSERTIONS
135 #define wimlib_assert2(expr) wimlib_assert(expr)
137 #define wimlib_assert2(expr)
141 #ifdef ENABLE_CUSTOM_MEMORY_ALLOCATOR
142 extern void *(*wimlib_malloc_func)(size_t);
143 extern void (*wimlib_free_func)(void *);
144 extern void *(*wimlib_realloc_func)(void *, size_t);
145 extern void *wimlib_calloc(size_t nmemb, size_t size);
146 extern char *wimlib_strdup(const char *str);
147 # define MALLOC wimlib_malloc_func
148 # define FREE wimlib_free_func
149 # define REALLOC wimlib_realloc_func
150 # define CALLOC wimlib_calloc
151 # define STRDUP wimlib_strdup
155 # define MALLOC malloc
157 # define REALLOC realloc
158 # define CALLOC calloc
159 # define STRDUP strdup
160 #endif /* ENABLE_CUSTOM_MEMORY_ALLOCATOR */
164 extern int utf16_to_utf8(const char *utf16_str, size_t utf16_nbytes,
165 char **utf8_str_ret, size_t *utf8_nbytes_ret);
167 extern int utf8_to_utf16(const char *utf8_str, size_t utf8_nbytes,
168 char **utf16_str_ret, size_t *utf16_nbytes_ret);
171 extern void randomize_byte_array(u8 *p, size_t n);
173 extern void randomize_char_array_with_alnum(char p[], size_t n);
175 extern const char *path_next_part(const char *path,
176 size_t *first_part_len_ret);
178 extern const char *path_basename(const char *path);
180 extern const char *path_stream_name(const char *path);
182 extern void to_parent_name(char buf[], size_t len);
184 extern void print_string(const void *string, size_t len);
186 extern int get_num_path_components(const char *path);
188 static inline void print_byte_field(const u8 field[], size_t len)
191 printf("%02hhx", *field++);
194 static inline u32 bsr32(u32 n)
196 #if defined(__x86__) || defined(__x86_64__)
203 while ((n >>= 1) != 0)
209 #endif /* _WIMLIB_UTIL_H */