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)
35 * Compare-and-swap. Equivalent to the folliwng, but executed
43 #define atomic_inc(ptr) \
44 __sync_fetch_and_add(ptr, 1)
46 #define atomic_dec(ptr) \
47 __sync_sub_and_fetch(ptr, 1)
49 #define cas(ptr, oval, nval) \
50 __sync_val_compare_and_swap(ptr, oval, nval);
52 #define cas_bool(ptr, oval, nval) \
53 __sync_bool_compare_and_swap(ptr, oval, nval);
62 typedef unsigned uint;
65 #define min(a, b) ({ typeof(a) __a = (a); typeof(b) __b = (b); \
66 (__a < __b) ? __a : __b; })
70 #define max(a, b) ({ typeof(a) __a = (a); typeof(b) __b = (b); \
71 (__a > __b) ? __a : __b; })
75 #define swap(a, b) ({typeof(a) _a = a; (a) = (b); (b) = _a;})
79 * container_of - cast a member of a structure out to the containing structure
80 * @ptr: the pointer to the member.
81 * @type: the type of the container struct this is embedded in.
82 * @member: the name of the member within the struct.
86 #define container_of(ptr, type, member) ({ \
87 const typeof( ((type *)0)->member ) *__mptr = (ptr); \
88 (type *)( (char *)__mptr - offsetof(type,member) );})
91 #define ARRAY_LEN(array) (sizeof(array) / sizeof((array)[0]))
93 #define ZERO_ARRAY(array) memset(array, 0, sizeof(array))
95 /* Used for buffering FILE IO in a few places */
96 #define BUFFER_SIZE 4096
98 #ifdef ENABLE_ERROR_MESSAGES
99 extern bool __wimlib_print_errors;
100 extern void wimlib_error(const char *format, ...)
101 FORMAT(printf, 1, 2) COLD;
102 extern void wimlib_error_with_errno(const char *format, ...)
103 FORMAT(printf, 1, 2) COLD;
104 extern void wimlib_warning(const char *format, ...)
105 FORMAT(printf, 1, 2) COLD;
106 # define ERROR wimlib_error
107 # define ERROR_WITH_ERRNO wimlib_error_with_errno
108 # define WARNING wimlib_warning
110 # define ERROR(format, ...)
111 # define ERROR_WITH_ERRNO(format, ...)
112 # define WARNING(format, ...)
113 #endif /* ENABLE_ERROR_MESSAGES */
115 #if defined(ENABLE_DEBUG) || defined(ENABLE_MORE_DEBUG)
117 # define DEBUG(format, ...) \
119 int __errno_save = errno; \
120 fprintf(stdout, "[%s %d] %s(): " format, \
121 __FILE__, __LINE__, __func__, ## __VA_ARGS__); \
124 errno = __errno_save; \
128 # define DEBUG(format, ...)
129 #endif /* ENABLE_DEBUG || ENABLE_MORE_DEBUG */
131 #ifdef ENABLE_MORE_DEBUG
132 # define DEBUG2(format, ...) DEBUG(format, ## __VA_ARGS__)
134 # define DEBUG2(format, ...)
135 #endif /* ENABLE_DEBUG */
137 #ifdef ENABLE_ASSERTIONS
139 # define wimlib_assert(expr) assert(expr)
141 # define wimlib_assert(expr)
145 #ifdef ENABLE_CUSTOM_MEMORY_ALLOCATOR
146 extern void *(*wimlib_malloc_func)(size_t);
147 extern void (*wimlib_free_func)(void *);
148 extern void *(*wimlib_realloc_func)(void *, size_t);
149 extern void *wimlib_calloc(size_t nmemb, size_t size);
150 extern char *wimlib_strdup(const char *str);
151 # define MALLOC wimlib_malloc_func
152 # define FREE wimlib_free_func
153 # define REALLOC wimlib_realloc_func
154 # define CALLOC wimlib_calloc
155 # define STRDUP wimlib_strdup
159 # define MALLOC malloc
161 # define REALLOC realloc
162 # define CALLOC calloc
163 # define STRDUP strdup
164 #endif /* ENABLE_CUSTOM_MEMORY_ALLOCATOR */
167 extern char *utf16_to_utf8(const char *utf16_str, size_t utf16_len,
168 size_t *utf8_len_ret);
170 extern char *utf8_to_utf16(const char *utf8_str, size_t utf8_len,
171 size_t *utf16_len_ret);
173 extern void randomize_byte_array(u8 *p, size_t n);
175 extern void randomize_char_array_with_alnum(char p[], size_t n);
177 extern const char *path_next_part(const char *path,
178 size_t *first_part_len_ret);
180 extern const char *path_basename(const char *path);
182 extern const char *path_stream_name(const char *path);
184 extern void to_parent_name(char buf[], size_t len);
186 extern void print_string(const void *string, size_t len);
188 extern int get_num_path_components(const char *path);
190 extern ssize_t full_write(int fd, const void *buf, size_t n);
192 static inline void print_byte_field(const u8 field[], size_t len)
195 printf("%02hhx", *field++);
199 #endif /* _WIMLIB_UTIL_H */