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>
76 #include <linux/bitops.h>
78 extern const char *graph_line;
79 extern const char *graph_dotted_line;
80 extern char buildid_dir[];
81 extern char tracing_events_path[];
82 extern void perf_debugfs_set_path(const char *mountpoint);
83 const char *perf_debugfs_mount(const char *mountpoint);
84 const char *find_tracing_dir(void);
85 char *get_tracing_file(const char *name);
86 void put_tracing_file(char *file);
88 /* On most systems <limits.h> would have given us this, but
89 * not on some systems (e.g. GNU/Hurd).
111 #ifndef STRIP_EXTENSION
112 #define STRIP_EXTENSION ""
115 #ifndef has_dos_drive_prefix
116 #define has_dos_drive_prefix(path) 0
120 #define is_dir_sep(c) ((c) == '/')
124 #define NORETURN __attribute__((__noreturn__))
127 #ifndef __attribute__
128 #define __attribute__(x)
132 #define PERF_GTK_DSO "libperf-gtk.so"
134 /* General helper functions */
135 extern void usage(const char *err) NORETURN;
136 extern void die(const char *err, ...) NORETURN __attribute__((format (printf, 1, 2)));
137 extern int error(const char *err, ...) __attribute__((format (printf, 1, 2)));
138 extern void warning(const char *err, ...) __attribute__((format (printf, 1, 2)));
140 #include "../../../include/linux/stringify.h"
142 #define DIE_IF(cnd) \
144 die(" at (" __FILE__ ":" __stringify(__LINE__) "): " \
145 __stringify(cnd) "\n"); \
149 extern void set_die_routine(void (*routine)(const char *err, va_list params) NORETURN);
151 extern int prefixcmp(const char *str, const char *prefix);
152 extern void set_buildid_dir(void);
153 extern void disable_buildid_cache(void);
155 static inline const char *skip_prefix(const char *str, const char *prefix)
157 size_t len = strlen(prefix);
158 return strncmp(str, prefix, len) ? NULL : str + len;
161 #ifdef __GLIBC_PREREQ
162 #if __GLIBC_PREREQ(2, 1)
163 #define HAVE_STRCHRNUL
167 #ifndef HAVE_STRCHRNUL
168 #define strchrnul gitstrchrnul
169 static inline char *gitstrchrnul(const char *s, int c)
171 while (*s && *s != c)
180 extern char *xstrdup(const char *str);
181 extern void *xrealloc(void *ptr, size_t size) __attribute__((weak));
184 static inline void *zalloc(size_t size)
186 return calloc(1, size);
189 static inline int has_extension(const char *filename, const char *ext)
191 size_t len = strlen(filename);
192 size_t extlen = strlen(ext);
194 return len > extlen && !memcmp(filename + len - extlen, ext, extlen);
197 /* Sane ctype - no locale, and works with signed chars */
210 #ifndef NSEC_PER_MSEC
211 #define NSEC_PER_MSEC 1000000L
214 int parse_nsec_time(const char *str, u64 *ptime);
216 extern unsigned char sane_ctype[256];
217 #define GIT_SPACE 0x01
218 #define GIT_DIGIT 0x02
219 #define GIT_ALPHA 0x04
220 #define GIT_GLOB_SPECIAL 0x08
221 #define GIT_REGEX_SPECIAL 0x10
222 #define GIT_PRINT_EXTRA 0x20
223 #define GIT_PRINT 0x3E
224 #define sane_istest(x,mask) ((sane_ctype[(unsigned char)(x)] & (mask)) != 0)
225 #define isascii(x) (((x) & ~0x7f) == 0)
226 #define isspace(x) sane_istest(x,GIT_SPACE)
227 #define isdigit(x) sane_istest(x,GIT_DIGIT)
228 #define isxdigit(x) \
229 (sane_istest(toupper(x), GIT_ALPHA | GIT_DIGIT) && toupper(x) < 'G')
230 #define isalpha(x) sane_istest(x,GIT_ALPHA)
231 #define isalnum(x) sane_istest(x,GIT_ALPHA | GIT_DIGIT)
232 #define isprint(x) sane_istest(x,GIT_PRINT)
233 #define islower(x) (sane_istest(x,GIT_ALPHA) && (x & 0x20))
234 #define isupper(x) (sane_istest(x,GIT_ALPHA) && !(x & 0x20))
235 #define tolower(x) sane_case((unsigned char)(x), 0x20)
236 #define toupper(x) sane_case((unsigned char)(x), 0)
238 static inline int sane_case(int x, int high)
240 if (sane_istest(x, GIT_ALPHA))
241 x = (x & ~0x20) | high;
245 int mkdir_p(char *path, mode_t mode);
246 int copyfile(const char *from, const char *to);
247 int copyfile_mode(const char *from, const char *to, mode_t mode);
249 s64 perf_atoll(const char *str);
250 char **argv_split(const char *str, int *argcp);
251 void argv_free(char **argv);
252 bool strglobmatch(const char *str, const char *pat);
253 bool strlazymatch(const char *str, const char *pat);
254 int strtailcmp(const char *s1, const char *s2);
255 char *strxfrchar(char *s, char from, char to);
256 unsigned long convert_unit(unsigned long value, char *unit);
257 ssize_t readn(int fd, void *buf, size_t n);
258 ssize_t writen(int fd, void *buf, size_t n);
260 struct perf_event_attr;
262 void event_attr_init(struct perf_event_attr *attr);
265 #define STR(x) _STR(x)
268 * Determine whether some value is a power of two, where zero is
269 * *not* considered a power of two.
272 static inline __attribute__((const))
273 bool is_power_of_2(unsigned long n)
275 return (n != 0 && ((n & (n - 1)) == 0));
278 static inline unsigned next_pow2(unsigned x)
282 return 1ULL << (32 - __builtin_clz(x - 1));
285 static inline unsigned long next_pow2_l(unsigned long x)
287 #if BITS_PER_LONG == 64
288 if (x <= (1UL << 31))
290 return (unsigned long)next_pow2(x >> 32) << 32;
296 size_t hex_width(u64 v);
297 int hex2u64(const char *ptr, u64 *val);
299 char *ltrim(char *s);
300 char *rtrim(char *s);
302 void dump_stack(void);
304 extern unsigned int page_size;
306 void get_term_dimensions(struct winsize *ws);
313 unsigned long parse_tag_value(const char *str, struct parse_tag *tags);
315 #define SRCLINE_UNKNOWN ((char *) "??:0")
319 char *get_srcline(struct dso *dso, unsigned long addr);
320 void free_srcline(char *srcline);
322 int filename__read_int(const char *filename, int *value);
323 int filename__read_str(const char *filename, char **buf, size_t *sizep);
324 #endif /* GIT_COMPAT_UTIL_H */