12 # if defined(__CYGWIN__) || defined(__WIN32__)
13 # define WIMLIBAPI __declspec(dllexport)
15 # define WIMLIBAPI __attribute__((visibility("default")))
17 # define ALWAYS_INLINE inline __attribute__((always_inline))
18 # define PACKED __attribute__((packed))
19 # define FORMAT(type, format_str, args_start) \
20 __attribute__((format(type, format_str, args_start)))
21 # if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4)
22 # define COLD __attribute__((cold))
28 # define ALWAYS_INLINE inline
29 # define FORMAT(type, format_str, args_start)
37 #define atomic_inc(ptr) \
38 __sync_fetch_and_add(ptr, 1)
40 #define atomic_dec(ptr) \
41 __sync_sub_and_fetch(ptr, 1)
52 /* A pointer to 'mbchar' indicates a string of "multibyte characters" provided
53 * in the default encoding of the user's locale, which may be "UTF-8",
54 * "ISO-8859-1", "C", or any other ASCII-compatible encoding.
55 * "ASCII-compatible" here means any encoding where all ASCII characters have
56 * the same representation, and any non-ASCII character is represented as a
57 * sequence of one or more bytes not already used by any ASCII character. */
60 /* A pointer to 'utf8char' indicates a UTF-8 encoded string */
61 typedef char utf8char;
63 /* Note: in some places in the code, strings of plain old 'char' are still used.
64 * This means that the string is being operated on in an ASCII-compatible way,
65 * and may be either a multibyte or UTF-8 string. */
67 /* A pointer to 'utf16lechar' indicates a UTF-16LE encoded string */
68 typedef u16 utf16lechar;
71 #define min(a, b) ({ typeof(a) __a = (a); typeof(b) __b = (b); \
72 (__a < __b) ? __a : __b; })
76 #define max(a, b) ({ typeof(a) __a = (a); typeof(b) __b = (b); \
77 (__a > __b) ? __a : __b; })
81 #define swap(a, b) ({typeof(a) _a = a; (a) = (b); (b) = _a;})
85 * container_of - cast a member of a structure out to the containing structure
86 * @ptr: the pointer to the member.
87 * @type: the type of the container struct this is embedded in.
88 * @member: the name of the member within the struct.
92 #define container_of(ptr, type, member) ({ \
93 const typeof( ((type *)0)->member ) *__mptr = (ptr); \
94 (type *)( (char *)__mptr - offsetof(type,member) );})
97 #define DIV_ROUND_UP(numerator, denominator) \
98 (((numerator) + (denominator) - 1) / (denominator))
100 #define MODULO_NONZERO(numerator, denominator) \
101 (((numerator) % (denominator)) ? ((numerator) % (denominator)) : (denominator))
103 #define ARRAY_LEN(array) (sizeof(array) / sizeof((array)[0]))
105 #define ZERO_ARRAY(array) memset(array, 0, sizeof(array))
107 /* Used for buffering FILE IO in a few places */
108 #define BUFFER_SIZE 4096
110 static inline void FORMAT(printf, 1, 2)
111 dummy_printf(const char *format, ...)
115 #ifdef ENABLE_ERROR_MESSAGES
117 wimlib_error(const char *format, ...) FORMAT(printf, 1, 2) COLD;
120 wimlib_error_with_errno(const char *format, ...) FORMAT(printf, 1, 2) COLD;
123 wimlib_warning(const char *format, ...) FORMAT(printf, 1, 2) COLD;
126 wimlib_warning_with_errno(const char *format, ...) FORMAT(printf, 1, 2) COLD;
127 # define ERROR wimlib_error
128 # define ERROR_WITH_ERRNO wimlib_error_with_errno
129 # define WARNING wimlib_warning
130 # define WARNING_WITH_ERRNO wimlib_warning
132 # define ERROR(format, ...) dummy_printf(format, ## __VA_ARGS__)
133 # define ERROR_WITH_ERRNO(format, ...) dummy_printf(format, ## __VA_ARGS__)
134 # define WARNING(format, ...) dummy_printf(format, ## __VA_ARGS__)
135 # define WARNING_WITH_ERRNO(format, ...) dummy_printf(format, ## __VA_ARGS__)
136 #endif /* ENABLE_ERROR_MESSAGES */
138 #if defined(ENABLE_DEBUG) || defined(ENABLE_MORE_DEBUG)
140 # define DEBUG(format, ...) \
142 int __errno_save = errno; \
143 wimlib_fprintf(stdout, "[%s %d] %s(): " format, \
144 __FILE__, __LINE__, __func__, ## __VA_ARGS__); \
147 errno = __errno_save; \
151 # define DEBUG(format, ...) dummy_printf(format, ## __VA_ARGS__)
152 #endif /* ENABLE_DEBUG || ENABLE_MORE_DEBUG */
154 #ifdef ENABLE_MORE_DEBUG
155 # define DEBUG2(format, ...) DEBUG(format, ## __VA_ARGS__)
157 # define DEBUG2(format, ...) dummy_printf(format, ## __VA_ARGS__)
158 #endif /* ENABLE_DEBUG */
160 #ifdef ENABLE_ASSERTIONS
162 # define wimlib_assert(expr) assert(expr)
164 # define wimlib_assert(expr)
167 #ifdef ENABLE_MORE_ASSERTIONS
168 #define wimlib_assert2(expr) wimlib_assert(expr)
170 #define wimlib_assert2(expr)
173 #define BUILD_BUG_ON(condition) ((void)sizeof(char[1 - 2*!!(condition)]))
175 #ifdef ENABLE_CUSTOM_MEMORY_ALLOCATOR
176 extern void *(*wimlib_malloc_func)(size_t);
177 extern void (*wimlib_free_func)(void *);
178 extern void *(*wimlib_realloc_func)(void *, size_t);
179 extern void *wimlib_calloc(size_t nmemb, size_t size);
180 extern char *wimlib_strdup(const char *str);
181 # define MALLOC wimlib_malloc_func
182 # define FREE wimlib_free_func
183 # define REALLOC wimlib_realloc_func
184 # define CALLOC wimlib_calloc
185 # define STRDUP wimlib_strdup
189 # define MALLOC malloc
191 # define REALLOC realloc
192 # define CALLOC calloc
193 # define STRDUP strdup
194 #endif /* ENABLE_CUSTOM_MEMORY_ALLOCATOR */
199 randomize_byte_array(u8 *p, size_t n);
202 randomize_char_array_with_alnum(char p[], size_t n);
205 path_next_part(const char *path, size_t *first_part_len_ret);
208 path_basename(const char *path);
211 path_stream_name(const char *path);
214 to_parent_name(char buf[], size_t len);
217 print_string(const void *string, size_t len);
220 get_num_path_components(const char *path);
223 print_byte_field(const u8 field[], size_t len)
226 printf("%02hhx", *field++);
232 #if defined(__x86__) || defined(__x86_64__)
239 while ((n >>= 1) != 0)
246 wimlib_fprintf(FILE *fp, const char *format, ...) FORMAT(printf, 2, 3);
249 wimlib_printf(const char *format, ...) FORMAT(printf, 1, 2);
251 #endif /* _WIMLIB_UTIL_H */