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)
42 /* glibc 2.20 deprecates _BSD_SOURCE in favour of _DEFAULT_SOURCE */
43 #define _DEFAULT_SOURCE 1
49 #include <sys/statfs.h>
59 #include <sys/param.h>
60 #include <sys/types.h>
71 #include <sys/socket.h>
72 #include <sys/ioctl.h>
74 #include <linux/kernel.h>
75 #include <linux/magic.h>
76 #include <linux/types.h>
77 #include <sys/ttydefaults.h>
78 #include <api/fs/tracing_path.h>
80 #include <linux/bitops.h>
84 extern const char *graph_line
;
85 extern const char *graph_dotted_line
;
86 extern const char *spaces
;
87 extern const char *dots
;
88 extern char buildid_dir
[];
90 /* On most systems <limits.h> would have given us this, but
91 * not on some systems (e.g. GNU/Hurd).
113 #ifndef STRIP_EXTENSION
114 #define STRIP_EXTENSION ""
117 #ifndef has_dos_drive_prefix
118 #define has_dos_drive_prefix(path) 0
122 #define is_dir_sep(c) ((c) == '/')
126 #define NORETURN __attribute__((__noreturn__))
129 #ifndef __attribute__
130 #define __attribute__(x)
134 #define PERF_GTK_DSO "libperf-gtk.so"
136 /* General helper functions */
137 void usage(const char *err
) NORETURN
;
138 void die(const char *err
, ...) NORETURN
__attribute__((format (printf
, 1, 2)));
139 int error(const char *err
, ...) __attribute__((format (printf
, 1, 2)));
140 void warning(const char *err
, ...) __attribute__((format (printf
, 1, 2)));
142 void set_warning_routine(void (*routine
)(const char *err
, va_list params
));
144 int prefixcmp(const char *str
, const char *prefix
);
145 void set_buildid_dir(const char *dir
);
147 #ifdef __GLIBC_PREREQ
148 #if __GLIBC_PREREQ(2, 1)
149 #define HAVE_STRCHRNUL
153 #ifndef HAVE_STRCHRNUL
154 #define strchrnul gitstrchrnul
155 static inline char *gitstrchrnul(const char *s
, int c
)
157 while (*s
&& *s
!= c
)
163 static inline void *zalloc(size_t size
)
165 return calloc(1, size
);
168 #define zfree(ptr) ({ free(*ptr); *ptr = NULL; })
170 /* Sane ctype - no locale, and works with signed chars */
183 #ifndef NSEC_PER_MSEC
184 #define NSEC_PER_MSEC 1000000L
187 int parse_nsec_time(const char *str
, u64
*ptime
);
189 extern unsigned char sane_ctype
[256];
190 #define GIT_SPACE 0x01
191 #define GIT_DIGIT 0x02
192 #define GIT_ALPHA 0x04
193 #define GIT_GLOB_SPECIAL 0x08
194 #define GIT_REGEX_SPECIAL 0x10
195 #define GIT_PRINT_EXTRA 0x20
196 #define GIT_PRINT 0x3E
197 #define sane_istest(x,mask) ((sane_ctype[(unsigned char)(x)] & (mask)) != 0)
198 #define isascii(x) (((x) & ~0x7f) == 0)
199 #define isspace(x) sane_istest(x,GIT_SPACE)
200 #define isdigit(x) sane_istest(x,GIT_DIGIT)
201 #define isxdigit(x) \
202 (sane_istest(toupper(x), GIT_ALPHA | GIT_DIGIT) && toupper(x) < 'G')
203 #define isalpha(x) sane_istest(x,GIT_ALPHA)
204 #define isalnum(x) sane_istest(x,GIT_ALPHA | GIT_DIGIT)
205 #define isprint(x) sane_istest(x,GIT_PRINT)
206 #define islower(x) (sane_istest(x,GIT_ALPHA) && (x & 0x20))
207 #define isupper(x) (sane_istest(x,GIT_ALPHA) && !(x & 0x20))
208 #define tolower(x) sane_case((unsigned char)(x), 0x20)
209 #define toupper(x) sane_case((unsigned char)(x), 0)
211 static inline int sane_case(int x
, int high
)
213 if (sane_istest(x
, GIT_ALPHA
))
214 x
= (x
& ~0x20) | high
;
218 int mkdir_p(char *path
, mode_t mode
);
219 int rm_rf(char *path
);
220 struct strlist
*lsdir(const char *name
, bool (*filter
)(const char *, struct dirent
*));
221 bool lsdir_no_dot_filter(const char *name
, struct dirent
*d
);
222 int copyfile(const char *from
, const char *to
);
223 int copyfile_mode(const char *from
, const char *to
, mode_t mode
);
224 int copyfile_offset(int fromfd
, loff_t from_ofs
, int tofd
, loff_t to_ofs
, u64 size
);
226 s64
perf_atoll(const char *str
);
227 char **argv_split(const char *str
, int *argcp
);
228 void argv_free(char **argv
);
229 bool strglobmatch(const char *str
, const char *pat
);
230 bool strlazymatch(const char *str
, const char *pat
);
231 static inline bool strisglob(const char *str
)
233 return strpbrk(str
, "*?[") != NULL
;
235 int strtailcmp(const char *s1
, const char *s2
);
236 char *strxfrchar(char *s
, char from
, char to
);
237 unsigned long convert_unit(unsigned long value
, char *unit
);
238 ssize_t
readn(int fd
, void *buf
, size_t n
);
239 ssize_t
writen(int fd
, void *buf
, size_t n
);
241 struct perf_event_attr
;
243 void event_attr_init(struct perf_event_attr
*attr
);
246 #define STR(x) _STR(x)
248 size_t hex_width(u64 v
);
249 int hex2u64(const char *ptr
, u64
*val
);
251 char *ltrim(char *s
);
252 char *rtrim(char *s
);
254 static inline char *trim(char *s
)
256 return ltrim(rtrim(s
));
259 void dump_stack(void);
260 void sighandler_dump_stack(int sig
);
262 extern unsigned int page_size
;
263 extern int cacheline_size
;
264 extern int sysctl_perf_event_max_stack
;
265 extern int sysctl_perf_event_max_contexts_per_stack
;
272 unsigned long parse_tag_value(const char *str
, struct parse_tag
*tags
);
274 #define SRCLINE_UNKNOWN ((char *) "??:0")
276 static inline int path__join(char *bf
, size_t size
,
277 const char *path1
, const char *path2
)
279 return scnprintf(bf
, size
, "%s%s%s", path1
, path1
[0] ? "/" : "", path2
);
282 static inline int path__join3(char *bf
, size_t size
,
283 const char *path1
, const char *path2
,
286 return scnprintf(bf
, size
, "%s%s%s%s%s",
287 path1
, path1
[0] ? "/" : "",
288 path2
, path2
[0] ? "/" : "", path3
);
294 extern bool srcline_full_filename
;
295 char *get_srcline(struct dso
*dso
, u64 addr
, struct symbol
*sym
,
297 char *__get_srcline(struct dso
*dso
, u64 addr
, struct symbol
*sym
,
298 bool show_sym
, bool unwind_inlines
);
299 void free_srcline(char *srcline
);
301 int perf_event_paranoid(void);
303 void mem_bswap_64(void *src
, int byte_size
);
304 void mem_bswap_32(void *src
, int byte_size
);
306 const char *get_filename_for_perf_kvm(void);
307 bool find_process(const char *name
);
309 #ifdef HAVE_ZLIB_SUPPORT
310 int gzip_decompress_to_file(const char *input
, int output_fd
);
313 #ifdef HAVE_LZMA_SUPPORT
314 int lzma_decompress_to_file(const char *input
, int output_fd
);
317 char *asprintf_expr_inout_ints(const char *var
, bool in
, size_t nints
, int *ints
);
319 static inline char *asprintf_expr_in_ints(const char *var
, size_t nints
, int *ints
)
321 return asprintf_expr_inout_ints(var
, true, nints
, ints
);
324 static inline char *asprintf_expr_not_in_ints(const char *var
, size_t nints
, int *ints
)
326 return asprintf_expr_inout_ints(var
, false, nints
, ints
);
329 int get_stack_size(const char *str
, unsigned long *_size
);
331 int fetch_kernel_version(unsigned int *puint
,
332 char *str
, size_t str_sz
);
333 #define KVER_VERSION(x) (((x) >> 16) & 0xff)
334 #define KVER_PATCHLEVEL(x) (((x) >> 8) & 0xff)
335 #define KVER_SUBLEVEL(x) ((x) & 0xff)
336 #define KVER_FMT "%d.%d.%d"
337 #define KVER_PARAM(x) KVER_VERSION(x), KVER_PATCHLEVEL(x), KVER_SUBLEVEL(x)
339 const char *perf_tip(const char *dirpath
);
340 bool is_regular_file(const char *file
);
341 int fetch_current_timestamp(char *buf
, size_t sz
);
343 enum binary_printer_ops
{
344 BINARY_PRINT_DATA_BEGIN
,
345 BINARY_PRINT_LINE_BEGIN
,
347 BINARY_PRINT_NUM_DATA
,
348 BINARY_PRINT_NUM_PAD
,
350 BINARY_PRINT_CHAR_DATA
,
351 BINARY_PRINT_CHAR_PAD
,
352 BINARY_PRINT_LINE_END
,
353 BINARY_PRINT_DATA_END
,
356 typedef void (*print_binary_t
)(enum binary_printer_ops
,
360 void print_binary(unsigned char *data
, size_t len
,
361 size_t bytes_per_line
, print_binary_t printer
,
363 #endif /* GIT_COMPAT_UTIL_H */