1 #ifndef GIT_COMPAT_UTIL_H
2 #define GIT_COMPAT_UTIL_H
6 * See if our compiler is known to support flexible array members.
8 #if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L)
9 # define FLEX_ARRAY /* empty */
10 #elif defined(__GNUC__)
12 # define FLEX_ARRAY /* empty */
14 # define FLEX_ARRAY 0 /* older GNU extension */
19 * Otherwise, default to safer but a bit wasteful traditional style
26 #define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0]))
29 #define TYPEOF(x) (__typeof__(x))
34 #define MSB(x, bits) ((x) & TYPEOF(x)(~0ULL << (sizeof(x) * 8 - (bits))))
35 #define HAS_MULTI_BITS(i) ((i) & ((i) - 1)) /* checks if an integer has more than 1 bit set */
37 /* Approximation of the length of the decimal representation of this type. */
38 #define decimal_length(x) ((int)(sizeof(x) * 2.56 + 0.5) + 1)
47 #include <sys/statfs.h>
56 #include <sys/param.h>
57 #include <sys/types.h>
68 #include <sys/socket.h>
69 #include <sys/ioctl.h>
71 #include <linux/magic.h>
73 #include <sys/ttydefaults.h>
74 #include <lk/debugfs.h>
77 extern const char *graph_line;
78 extern const char *graph_dotted_line;
79 extern char buildid_dir[];
80 extern char tracing_events_path[];
81 extern void perf_debugfs_set_path(const char *mountpoint);
82 const char *perf_debugfs_mount(const char *mountpoint);
84 /* On most systems <limits.h> would have given us this, but
85 * not on some systems (e.g. GNU/Hurd).
107 #ifndef STRIP_EXTENSION
108 #define STRIP_EXTENSION ""
111 #ifndef has_dos_drive_prefix
112 #define has_dos_drive_prefix(path) 0
116 #define is_dir_sep(c) ((c) == '/')
120 #define NORETURN __attribute__((__noreturn__))
123 #ifndef __attribute__
124 #define __attribute__(x)
128 /* General helper functions */
129 extern void usage(const char *err) NORETURN;
130 extern void die(const char *err, ...) NORETURN __attribute__((format (printf, 1, 2)));
131 extern int error(const char *err, ...) __attribute__((format (printf, 1, 2)));
132 extern void warning(const char *err, ...) __attribute__((format (printf, 1, 2)));
134 #include "../../../include/linux/stringify.h"
136 #define DIE_IF(cnd) \
138 die(" at (" __FILE__ ":" __stringify(__LINE__) "): " \
139 __stringify(cnd) "\n"); \
143 extern void set_die_routine(void (*routine)(const char *err, va_list params) NORETURN);
145 extern int prefixcmp(const char *str, const char *prefix);
146 extern void set_buildid_dir(void);
147 extern void disable_buildid_cache(void);
149 static inline const char *skip_prefix(const char *str, const char *prefix)
151 size_t len = strlen(prefix);
152 return strncmp(str, prefix, len) ? NULL : str + len;
155 #ifdef __GLIBC_PREREQ
156 #if __GLIBC_PREREQ(2, 1)
157 #define HAVE_STRCHRNUL
161 #ifndef HAVE_STRCHRNUL
162 #define strchrnul gitstrchrnul
163 static inline char *gitstrchrnul(const char *s, int c)
165 while (*s && *s != c)
174 extern char *xstrdup(const char *str);
175 extern void *xrealloc(void *ptr, size_t size) __attribute__((weak));
178 static inline void *zalloc(size_t size)
180 return calloc(1, size);
183 static inline int has_extension(const char *filename, const char *ext)
185 size_t len = strlen(filename);
186 size_t extlen = strlen(ext);
188 return len > extlen && !memcmp(filename + len - extlen, ext, extlen);
191 /* Sane ctype - no locale, and works with signed chars */
204 #ifndef NSEC_PER_MSEC
205 #define NSEC_PER_MSEC 1000000L
208 extern unsigned char sane_ctype[256];
209 #define GIT_SPACE 0x01
210 #define GIT_DIGIT 0x02
211 #define GIT_ALPHA 0x04
212 #define GIT_GLOB_SPECIAL 0x08
213 #define GIT_REGEX_SPECIAL 0x10
214 #define GIT_PRINT_EXTRA 0x20
215 #define GIT_PRINT 0x3E
216 #define sane_istest(x,mask) ((sane_ctype[(unsigned char)(x)] & (mask)) != 0)
217 #define isascii(x) (((x) & ~0x7f) == 0)
218 #define isspace(x) sane_istest(x,GIT_SPACE)
219 #define isdigit(x) sane_istest(x,GIT_DIGIT)
220 #define isxdigit(x) \
221 (sane_istest(toupper(x), GIT_ALPHA | GIT_DIGIT) && toupper(x) < 'G')
222 #define isalpha(x) sane_istest(x,GIT_ALPHA)
223 #define isalnum(x) sane_istest(x,GIT_ALPHA | GIT_DIGIT)
224 #define isprint(x) sane_istest(x,GIT_PRINT)
225 #define islower(x) (sane_istest(x,GIT_ALPHA) && (x & 0x20))
226 #define isupper(x) (sane_istest(x,GIT_ALPHA) && !(x & 0x20))
227 #define tolower(x) sane_case((unsigned char)(x), 0x20)
228 #define toupper(x) sane_case((unsigned char)(x), 0)
230 static inline int sane_case(int x, int high)
232 if (sane_istest(x, GIT_ALPHA))
233 x = (x & ~0x20) | high;
237 int mkdir_p(char *path, mode_t mode);
238 int copyfile(const char *from, const char *to);
240 s64 perf_atoll(const char *str);
241 char **argv_split(const char *str, int *argcp);
242 void argv_free(char **argv);
243 bool strglobmatch(const char *str, const char *pat);
244 bool strlazymatch(const char *str, const char *pat);
245 int strtailcmp(const char *s1, const char *s2);
246 char *strxfrchar(char *s, char from, char to);
247 unsigned long convert_unit(unsigned long value, char *unit);
248 int readn(int fd, void *buf, size_t size);
250 struct perf_event_attr;
252 void event_attr_init(struct perf_event_attr *attr);
255 #define STR(x) _STR(x)
258 * Determine whether some value is a power of two, where zero is
259 * *not* considered a power of two.
262 static inline __attribute__((const))
263 bool is_power_of_2(unsigned long n)
265 return (n != 0 && ((n & (n - 1)) == 0));
268 size_t hex_width(u64 v);
269 int hex2u64(const char *ptr, u64 *val);
271 char *ltrim(char *s);
272 char *rtrim(char *s);
274 void dump_stack(void);
276 extern unsigned int page_size;
278 void get_term_dimensions(struct winsize *ws);
279 #endif /* GIT_COMPAT_UTIL_H */