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 void wimlib_error(const char *format, ...)
90 FORMAT(printf, 1, 2) COLD;
91 extern void wimlib_error_with_errno(const char *format, ...)
92 FORMAT(printf, 1, 2) COLD;
93 extern void wimlib_warning(const char *format, ...)
94 FORMAT(printf, 1, 2) COLD;
95 extern void wimlib_warning_with_errno(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
100 # define WARNING_WITH_ERRNO wimlib_warning
102 static inline FORMAT(printf, 1, 2) void
103 dummy_printf(const char *format, ...) { }
104 # define ERROR(format, ...) dummy_printf
105 # define ERROR_WITH_ERRNO(format, ...) dummy_printf
106 # define WARNING(format, ...) dummy_printf
107 # define WARNING_WITH_ERRNO(format, ...) dummy_printf
108 #endif /* ENABLE_ERROR_MESSAGES */
110 #if defined(ENABLE_DEBUG) || defined(ENABLE_MORE_DEBUG)
112 # define DEBUG(format, ...) \
114 int __errno_save = errno; \
115 fprintf(stdout, "[%s %d] %s(): " format, \
116 __FILE__, __LINE__, __func__, ## __VA_ARGS__); \
119 errno = __errno_save; \
123 # define DEBUG(format, ...)
124 #endif /* ENABLE_DEBUG || ENABLE_MORE_DEBUG */
126 #ifdef ENABLE_MORE_DEBUG
127 # define DEBUG2(format, ...) DEBUG(format, ## __VA_ARGS__)
129 # define DEBUG2(format, ...)
130 #endif /* ENABLE_DEBUG */
132 #ifdef ENABLE_ASSERTIONS
134 # define wimlib_assert(expr) assert(expr)
136 # define wimlib_assert(expr)
139 #ifdef ENABLE_MORE_ASSERTIONS
140 #define wimlib_assert2(expr) wimlib_assert(expr)
142 #define wimlib_assert2(expr)
145 #define BUILD_BUG_ON(condition) ((void)sizeof(char[1 - 2*!!(condition)]))
147 #ifdef ENABLE_CUSTOM_MEMORY_ALLOCATOR
148 extern void *(*wimlib_malloc_func)(size_t);
149 extern void (*wimlib_free_func)(void *);
150 extern void *(*wimlib_realloc_func)(void *, size_t);
151 extern void *wimlib_calloc(size_t nmemb, size_t size);
152 extern char *wimlib_strdup(const char *str);
153 # define MALLOC wimlib_malloc_func
154 # define FREE wimlib_free_func
155 # define REALLOC wimlib_realloc_func
156 # define CALLOC wimlib_calloc
157 # define STRDUP wimlib_strdup
161 # define MALLOC malloc
163 # define REALLOC realloc
164 # define CALLOC calloc
165 # define STRDUP strdup
166 #endif /* ENABLE_CUSTOM_MEMORY_ALLOCATOR */
172 static inline int iconv_global_init()
177 static inline void iconv_global_cleanup() { }
179 extern int iconv_global_init();
180 extern void iconv_global_cleanup();
183 extern int utf16_to_utf8(const char *utf16_str, size_t utf16_nbytes,
184 char **utf8_str_ret, size_t *utf8_nbytes_ret);
186 extern int utf8_to_utf16(const char *utf8_str, size_t utf8_nbytes,
187 char **utf16_str_ret, size_t *utf16_nbytes_ret);
190 extern void randomize_byte_array(u8 *p, size_t n);
192 extern void randomize_char_array_with_alnum(char p[], size_t n);
194 extern const char *path_next_part(const char *path,
195 size_t *first_part_len_ret);
197 extern const char *path_basename(const char *path);
199 extern const char *path_stream_name(const char *path);
201 extern void to_parent_name(char buf[], size_t len);
203 extern void print_string(const void *string, size_t len);
205 extern int get_num_path_components(const char *path);
207 static inline void print_byte_field(const u8 field[], size_t len)
210 printf("%02hhx", *field++);
213 static inline u32 bsr32(u32 n)
215 #if defined(__x86__) || defined(__x86_64__)
222 while ((n >>= 1) != 0)
228 #endif /* _WIMLIB_UTIL_H */