1 #ifndef GIT_COMPAT_UTIL_H
2 #define GIT_COMPAT_UTIL_H
4 #define _FILE_OFFSET_BITS 64
8 * See if our compiler is known to support flexible array members.
10 #if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L)
11 # define FLEX_ARRAY /* empty */
12 #elif defined(__GNUC__)
14 # define FLEX_ARRAY /* empty */
16 # define FLEX_ARRAY 0 /* older GNU extension */
21 * Otherwise, default to safer but a bit wasteful traditional style
28 #define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0]))
31 #define TYPEOF(x) (__typeof__(x))
36 #define MSB(x, bits) ((x) & TYPEOF(x)(~0ULL << (sizeof(x) * 8 - (bits))))
37 #define HAS_MULTI_BITS(i) ((i) & ((i) - 1)) /* checks if an integer has more than 1 bit set */
39 /* Approximation of the length of the decimal representation of this type. */
40 #define decimal_length(x) ((int)(sizeof(x) * 2.56 + 0.5) + 1)
49 #include <sys/statfs.h>
58 #include <sys/param.h>
59 #include <sys/types.h>
70 #include <sys/socket.h>
71 #include <sys/ioctl.h>
73 #include <linux/magic.h>
75 #include <sys/ttydefaults.h>
77 extern const char *graph_line
;
78 extern const char *graph_dotted_line
;
79 extern char buildid_dir
[];
81 /* On most systems <limits.h> would have given us this, but
82 * not on some systems (e.g. GNU/Hurd).
104 #ifndef STRIP_EXTENSION
105 #define STRIP_EXTENSION ""
108 #ifndef has_dos_drive_prefix
109 #define has_dos_drive_prefix(path) 0
113 #define is_dir_sep(c) ((c) == '/')
117 #define NORETURN __attribute__((__noreturn__))
120 #ifndef __attribute__
121 #define __attribute__(x)
125 /* General helper functions */
126 extern void usage(const char *err
) NORETURN
;
127 extern void die(const char *err
, ...) NORETURN
__attribute__((format (printf
, 1, 2)));
128 extern int error(const char *err
, ...) __attribute__((format (printf
, 1, 2)));
129 extern void warning(const char *err
, ...) __attribute__((format (printf
, 1, 2)));
131 #include "../../../include/linux/stringify.h"
133 #define DIE_IF(cnd) \
135 die(" at (" __FILE__ ":" __stringify(__LINE__) "): " \
136 __stringify(cnd) "\n"); \
140 extern void set_die_routine(void (*routine
)(const char *err
, va_list params
) NORETURN
);
142 extern int prefixcmp(const char *str
, const char *prefix
);
143 extern void set_buildid_dir(void);
144 extern void disable_buildid_cache(void);
146 static inline const char *skip_prefix(const char *str
, const char *prefix
)
148 size_t len
= strlen(prefix
);
149 return strncmp(str
, prefix
, len
) ? NULL
: str
+ len
;
152 #ifdef __GLIBC_PREREQ
153 #if __GLIBC_PREREQ(2, 1)
154 #define HAVE_STRCHRNUL
158 #ifndef HAVE_STRCHRNUL
159 #define strchrnul gitstrchrnul
160 static inline char *gitstrchrnul(const char *s
, int c
)
162 while (*s
&& *s
!= c
)
171 extern char *xstrdup(const char *str
);
172 extern void *xrealloc(void *ptr
, size_t size
) __attribute__((weak
));
175 static inline void *zalloc(size_t size
)
177 return calloc(1, size
);
180 static inline int has_extension(const char *filename
, const char *ext
)
182 size_t len
= strlen(filename
);
183 size_t extlen
= strlen(ext
);
185 return len
> extlen
&& !memcmp(filename
+ len
- extlen
, ext
, extlen
);
188 /* Sane ctype - no locale, and works with signed chars */
201 #ifndef NSEC_PER_MSEC
202 #define NSEC_PER_MSEC 1000000L
205 extern unsigned char sane_ctype
[256];
206 #define GIT_SPACE 0x01
207 #define GIT_DIGIT 0x02
208 #define GIT_ALPHA 0x04
209 #define GIT_GLOB_SPECIAL 0x08
210 #define GIT_REGEX_SPECIAL 0x10
211 #define GIT_PRINT_EXTRA 0x20
212 #define GIT_PRINT 0x3E
213 #define sane_istest(x,mask) ((sane_ctype[(unsigned char)(x)] & (mask)) != 0)
214 #define isascii(x) (((x) & ~0x7f) == 0)
215 #define isspace(x) sane_istest(x,GIT_SPACE)
216 #define isdigit(x) sane_istest(x,GIT_DIGIT)
217 #define isxdigit(x) \
218 (sane_istest(toupper(x), GIT_ALPHA | GIT_DIGIT) && toupper(x) < 'G')
219 #define isalpha(x) sane_istest(x,GIT_ALPHA)
220 #define isalnum(x) sane_istest(x,GIT_ALPHA | GIT_DIGIT)
221 #define isprint(x) sane_istest(x,GIT_PRINT)
222 #define islower(x) (sane_istest(x,GIT_ALPHA) && sane_istest(x,0x20))
223 #define isupper(x) (sane_istest(x,GIT_ALPHA) && !sane_istest(x,0x20))
224 #define tolower(x) sane_case((unsigned char)(x), 0x20)
225 #define toupper(x) sane_case((unsigned char)(x), 0)
227 static inline int sane_case(int x
, int high
)
229 if (sane_istest(x
, GIT_ALPHA
))
230 x
= (x
& ~0x20) | high
;
234 int mkdir_p(char *path
, mode_t mode
);
235 int copyfile(const char *from
, const char *to
);
237 s64
perf_atoll(const char *str
);
238 char **argv_split(const char *str
, int *argcp
);
239 void argv_free(char **argv
);
240 bool strglobmatch(const char *str
, const char *pat
);
241 bool strlazymatch(const char *str
, const char *pat
);
242 int strtailcmp(const char *s1
, const char *s2
);
243 unsigned long convert_unit(unsigned long value
, char *unit
);
244 int readn(int fd
, void *buf
, size_t size
);
246 struct perf_event_attr
;
248 void event_attr_init(struct perf_event_attr
*attr
);
251 #define STR(x) _STR(x)
254 * Determine whether some value is a power of two, where zero is
255 * *not* considered a power of two.
258 static inline __attribute__((const))
259 bool is_power_of_2(unsigned long n
)
261 return (n
!= 0 && ((n
& (n
- 1)) == 0));
264 size_t hex_width(u64 v
);
266 char *rtrim(char *s
);
268 void dump_stack(void);
270 extern unsigned int page_size
;