12 # define WIMLIBAPI __attribute__((visibility("default")))
13 # define NOINLINE __attribute__((noinline))
14 # define ALWAYS_INLINE inline __attribute__((always_inline))
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))
19 # define HOT __attribute__((hot))
27 # define ALWAYS_INLINE inline
28 # define FORMAT(type, format_str, args_start)
36 #define atomic_inc(ptr) \
37 __sync_fetch_and_add(ptr, 1)
39 #define atomic_dec(ptr) \
40 __sync_sub_and_fetch(ptr, 1)
50 typedef unsigned uint;
53 #define min(a, b) ({ typeof(a) __a = (a); typeof(b) __b = (b); \
54 (__a < __b) ? __a : __b; })
58 #define max(a, b) ({ typeof(a) __a = (a); typeof(b) __b = (b); \
59 (__a > __b) ? __a : __b; })
63 #define swap(a, b) ({typeof(a) _a = a; (a) = (b); (b) = _a;})
67 * container_of - cast a member of a structure out to the containing structure
68 * @ptr: the pointer to the member.
69 * @type: the type of the container struct this is embedded in.
70 * @member: the name of the member within the struct.
74 #define container_of(ptr, type, member) ({ \
75 const typeof( ((type *)0)->member ) *__mptr = (ptr); \
76 (type *)( (char *)__mptr - offsetof(type,member) );})
79 #define DIV_ROUND_UP(numerator, denominator) \
80 (((numerator) + (denominator) - 1) / (denominator))
82 #define MODULO_NONZERO(numerator, denominator) \
83 (((numerator) % (denominator)) ? ((numerator) % (denominator)) : (denominator))
85 #define ARRAY_LEN(array) (sizeof(array) / sizeof((array)[0]))
87 #define ZERO_ARRAY(array) memset(array, 0, sizeof(array))
89 /* Used for buffering FILE IO in a few places */
90 #define BUFFER_SIZE 4096
92 #ifdef ENABLE_ERROR_MESSAGES
93 extern bool __wimlib_print_errors;
94 extern void wimlib_error(const char *format, ...)
95 FORMAT(printf, 1, 2) COLD;
96 extern void wimlib_error_with_errno(const char *format, ...)
97 FORMAT(printf, 1, 2) COLD;
98 extern void wimlib_warning(const char *format, ...)
99 FORMAT(printf, 1, 2) COLD;
100 # define ERROR wimlib_error
101 # define ERROR_WITH_ERRNO wimlib_error_with_errno
102 # define WARNING wimlib_warning
104 # define ERROR(format, ...)
105 # define ERROR_WITH_ERRNO(format, ...)
106 # define WARNING(format, ...)
107 #endif /* ENABLE_ERROR_MESSAGES */
109 #if defined(ENABLE_DEBUG) || defined(ENABLE_MORE_DEBUG)
111 # define DEBUG(format, ...) \
113 int __errno_save = errno; \
114 fprintf(stdout, "[%s %d] %s(): " format, \
115 __FILE__, __LINE__, __func__, ## __VA_ARGS__); \
118 errno = __errno_save; \
122 # define DEBUG(format, ...)
123 #endif /* ENABLE_DEBUG || ENABLE_MORE_DEBUG */
125 #ifdef ENABLE_MORE_DEBUG
126 # define DEBUG2(format, ...) DEBUG(format, ## __VA_ARGS__)
128 # define DEBUG2(format, ...)
129 #endif /* ENABLE_DEBUG */
131 #ifdef ENABLE_ASSERTIONS
133 # define wimlib_assert(expr) assert(expr)
135 # define wimlib_assert(expr)
139 #ifdef ENABLE_CUSTOM_MEMORY_ALLOCATOR
140 extern void *(*wimlib_malloc_func)(size_t);
141 extern void (*wimlib_free_func)(void *);
142 extern void *(*wimlib_realloc_func)(void *, size_t);
143 extern void *wimlib_calloc(size_t nmemb, size_t size);
144 extern char *wimlib_strdup(const char *str);
145 # define MALLOC wimlib_malloc_func
146 # define FREE wimlib_free_func
147 # define REALLOC wimlib_realloc_func
148 # define CALLOC wimlib_calloc
149 # define STRDUP wimlib_strdup
153 # define MALLOC malloc
155 # define REALLOC realloc
156 # define CALLOC calloc
157 # define STRDUP strdup
158 #endif /* ENABLE_CUSTOM_MEMORY_ALLOCATOR */
161 extern char *utf16_to_utf8(const char *utf16_str, size_t utf16_len,
162 size_t *utf8_len_ret);
164 extern char *utf8_to_utf16(const char *utf8_str, size_t utf8_len,
165 size_t *utf16_len_ret);
167 extern void randomize_byte_array(u8 *p, size_t n);
169 extern void randomize_char_array_with_alnum(char p[], size_t n);
171 extern const char *path_next_part(const char *path,
172 size_t *first_part_len_ret);
174 extern const char *path_basename(const char *path);
176 extern const char *path_stream_name(const char *path);
178 extern void to_parent_name(char buf[], size_t len);
180 extern void print_string(const void *string, size_t len);
182 extern int get_num_path_components(const char *path);
184 static inline void print_byte_field(const u8 field[], size_t len)
187 printf("%02hhx", *field++);
190 static inline u32 bsr32(u32 n)
192 #if defined(__x86__) || defined(__x86_64__)
199 while ((n >>= 1) != 0)
205 #endif /* _WIMLIB_UTIL_H */