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/types.h>
76 #include <sys/ttydefaults.h>
77 #include <api/fs/tracing_path.h>
79 #include <linux/bitops.h>
83 extern const char *graph_line
;
84 extern const char *graph_dotted_line
;
85 extern const char *spaces
;
86 extern const char *dots
;
87 extern char buildid_dir
[];
89 /* On most systems <limits.h> would have given us this, but
90 * not on some systems (e.g. GNU/Hurd).
112 #ifndef STRIP_EXTENSION
113 #define STRIP_EXTENSION ""
116 #ifndef has_dos_drive_prefix
117 #define has_dos_drive_prefix(path) 0
121 #define is_dir_sep(c) ((c) == '/')
125 #define NORETURN __attribute__((__noreturn__))
128 #ifndef __attribute__
129 #define __attribute__(x)
133 #define PERF_GTK_DSO "libperf-gtk.so"
135 /* General helper functions */
136 void usage(const char *err
) NORETURN
;
137 void die(const char *err
, ...) NORETURN
__attribute__((format (printf
, 1, 2)));
138 int error(const char *err
, ...) __attribute__((format (printf
, 1, 2)));
139 void warning(const char *err
, ...) __attribute__((format (printf
, 1, 2)));
141 void set_warning_routine(void (*routine
)(const char *err
, va_list params
));
143 int prefixcmp(const char *str
, const char *prefix
);
144 void set_buildid_dir(const char *dir
);
146 #ifdef __GLIBC_PREREQ
147 #if __GLIBC_PREREQ(2, 1)
148 #define HAVE_STRCHRNUL
152 #ifndef HAVE_STRCHRNUL
153 #define strchrnul gitstrchrnul
154 static inline char *gitstrchrnul(const char *s
, int c
)
156 while (*s
&& *s
!= c
)
162 static inline void *zalloc(size_t size
)
164 return calloc(1, size
);
167 #define zfree(ptr) ({ free(*ptr); *ptr = NULL; })
169 /* Sane ctype - no locale, and works with signed chars */
182 #ifndef NSEC_PER_MSEC
183 #define NSEC_PER_MSEC 1000000L
186 int parse_nsec_time(const char *str
, u64
*ptime
);
188 extern unsigned char sane_ctype
[256];
189 #define GIT_SPACE 0x01
190 #define GIT_DIGIT 0x02
191 #define GIT_ALPHA 0x04
192 #define GIT_GLOB_SPECIAL 0x08
193 #define GIT_REGEX_SPECIAL 0x10
194 #define GIT_PRINT_EXTRA 0x20
195 #define GIT_PRINT 0x3E
196 #define sane_istest(x,mask) ((sane_ctype[(unsigned char)(x)] & (mask)) != 0)
197 #define isascii(x) (((x) & ~0x7f) == 0)
198 #define isspace(x) sane_istest(x,GIT_SPACE)
199 #define isdigit(x) sane_istest(x,GIT_DIGIT)
200 #define isxdigit(x) \
201 (sane_istest(toupper(x), GIT_ALPHA | GIT_DIGIT) && toupper(x) < 'G')
202 #define isalpha(x) sane_istest(x,GIT_ALPHA)
203 #define isalnum(x) sane_istest(x,GIT_ALPHA | GIT_DIGIT)
204 #define isprint(x) sane_istest(x,GIT_PRINT)
205 #define islower(x) (sane_istest(x,GIT_ALPHA) && (x & 0x20))
206 #define isupper(x) (sane_istest(x,GIT_ALPHA) && !(x & 0x20))
207 #define tolower(x) sane_case((unsigned char)(x), 0x20)
208 #define toupper(x) sane_case((unsigned char)(x), 0)
210 static inline int sane_case(int x
, int high
)
212 if (sane_istest(x
, GIT_ALPHA
))
213 x
= (x
& ~0x20) | high
;
217 int mkdir_p(char *path
, mode_t mode
);
218 int rm_rf(char *path
);
219 struct strlist
*lsdir(const char *name
, bool (*filter
)(const char *, struct dirent
*));
220 bool lsdir_no_dot_filter(const char *name
, struct dirent
*d
);
221 int copyfile(const char *from
, const char *to
);
222 int copyfile_mode(const char *from
, const char *to
, mode_t mode
);
223 int copyfile_offset(int fromfd
, loff_t from_ofs
, int tofd
, loff_t to_ofs
, u64 size
);
225 s64
perf_atoll(const char *str
);
226 char **argv_split(const char *str
, int *argcp
);
227 void argv_free(char **argv
);
228 bool strglobmatch(const char *str
, const char *pat
);
229 bool strlazymatch(const char *str
, const char *pat
);
230 static inline bool strisglob(const char *str
)
232 return strpbrk(str
, "*?[") != NULL
;
234 int strtailcmp(const char *s1
, const char *s2
);
235 char *strxfrchar(char *s
, char from
, char to
);
236 unsigned long convert_unit(unsigned long value
, char *unit
);
237 ssize_t
readn(int fd
, void *buf
, size_t n
);
238 ssize_t
writen(int fd
, void *buf
, size_t n
);
240 struct perf_event_attr
;
242 void event_attr_init(struct perf_event_attr
*attr
);
245 #define STR(x) _STR(x)
247 size_t hex_width(u64 v
);
248 int hex2u64(const char *ptr
, u64
*val
);
250 char *ltrim(char *s
);
251 char *rtrim(char *s
);
253 static inline char *trim(char *s
)
255 return ltrim(rtrim(s
));
258 void dump_stack(void);
259 void sighandler_dump_stack(int sig
);
261 extern unsigned int page_size
;
262 extern int cacheline_size
;
263 extern int sysctl_perf_event_max_stack
;
264 extern int sysctl_perf_event_max_contexts_per_stack
;
271 unsigned long parse_tag_value(const char *str
, struct parse_tag
*tags
);
273 #define SRCLINE_UNKNOWN ((char *) "??:0")
275 static inline int path__join(char *bf
, size_t size
,
276 const char *path1
, const char *path2
)
278 return scnprintf(bf
, size
, "%s%s%s", path1
, path1
[0] ? "/" : "", path2
);
281 static inline int path__join3(char *bf
, size_t size
,
282 const char *path1
, const char *path2
,
285 return scnprintf(bf
, size
, "%s%s%s%s%s",
286 path1
, path1
[0] ? "/" : "",
287 path2
, path2
[0] ? "/" : "", path3
);
293 extern bool srcline_full_filename
;
294 char *get_srcline(struct dso
*dso
, u64 addr
, struct symbol
*sym
,
296 char *__get_srcline(struct dso
*dso
, u64 addr
, struct symbol
*sym
,
297 bool show_sym
, bool unwind_inlines
);
298 void free_srcline(char *srcline
);
300 int perf_event_paranoid(void);
302 void mem_bswap_64(void *src
, int byte_size
);
303 void mem_bswap_32(void *src
, int byte_size
);
305 const char *get_filename_for_perf_kvm(void);
306 bool find_process(const char *name
);
308 #ifdef HAVE_ZLIB_SUPPORT
309 int gzip_decompress_to_file(const char *input
, int output_fd
);
312 #ifdef HAVE_LZMA_SUPPORT
313 int lzma_decompress_to_file(const char *input
, int output_fd
);
316 char *asprintf_expr_inout_ints(const char *var
, bool in
, size_t nints
, int *ints
);
318 static inline char *asprintf_expr_in_ints(const char *var
, size_t nints
, int *ints
)
320 return asprintf_expr_inout_ints(var
, true, nints
, ints
);
323 static inline char *asprintf_expr_not_in_ints(const char *var
, size_t nints
, int *ints
)
325 return asprintf_expr_inout_ints(var
, false, nints
, ints
);
328 int get_stack_size(const char *str
, unsigned long *_size
);
330 int fetch_kernel_version(unsigned int *puint
,
331 char *str
, size_t str_sz
);
332 #define KVER_VERSION(x) (((x) >> 16) & 0xff)
333 #define KVER_PATCHLEVEL(x) (((x) >> 8) & 0xff)
334 #define KVER_SUBLEVEL(x) ((x) & 0xff)
335 #define KVER_FMT "%d.%d.%d"
336 #define KVER_PARAM(x) KVER_VERSION(x), KVER_PATCHLEVEL(x), KVER_SUBLEVEL(x)
338 const char *perf_tip(const char *dirpath
);
339 bool is_regular_file(const char *file
);
340 int fetch_current_timestamp(char *buf
, size_t sz
);
342 enum binary_printer_ops
{
343 BINARY_PRINT_DATA_BEGIN
,
344 BINARY_PRINT_LINE_BEGIN
,
346 BINARY_PRINT_NUM_DATA
,
347 BINARY_PRINT_NUM_PAD
,
349 BINARY_PRINT_CHAR_DATA
,
350 BINARY_PRINT_CHAR_PAD
,
351 BINARY_PRINT_LINE_END
,
352 BINARY_PRINT_DATA_END
,
355 typedef void (*print_binary_t
)(enum binary_printer_ops
,
359 void print_binary(unsigned char *data
, size_t len
,
360 size_t bytes_per_line
, print_binary_t printer
,
364 extern int sched_getcpu(void);
367 #endif /* GIT_COMPAT_UTIL_H */