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
27 #define TYPEOF(x) (__typeof__(x))
32 #define MSB(x, bits) ((x) & TYPEOF(x)(~0ULL << (sizeof(x) * 8 - (bits))))
33 #define HAS_MULTI_BITS(i) ((i) & ((i) - 1)) /* checks if an integer has more than 1 bit set */
35 /* Approximation of the length of the decimal representation of this type. */
36 #define decimal_length(x) ((int)(sizeof(x) * 2.56 + 0.5) + 1)
40 /* glibc 2.20 deprecates _BSD_SOURCE in favour of _DEFAULT_SOURCE */
41 #define _DEFAULT_SOURCE 1
47 #include <sys/statfs.h>
57 #include <sys/param.h>
58 #include <sys/types.h>
69 #include <sys/socket.h>
70 #include <sys/ioctl.h>
72 #include <linux/kernel.h>
73 #include <linux/types.h>
74 #include <sys/ttydefaults.h>
75 #include <api/fs/tracing_path.h>
80 extern const char *graph_line;
81 extern const char *graph_dotted_line;
82 extern const char *spaces;
83 extern const char *dots;
84 extern char buildid_dir[];
86 /* On most systems <limits.h> would have given us this, but
87 * not on some systems (e.g. GNU/Hurd).
109 #ifndef STRIP_EXTENSION
110 #define STRIP_EXTENSION ""
113 #ifndef has_dos_drive_prefix
114 #define has_dos_drive_prefix(path) 0
118 #define is_dir_sep(c) ((c) == '/')
122 #define NORETURN __attribute__((__noreturn__))
125 #ifndef __attribute__
126 #define __attribute__(x)
130 #define PERF_GTK_DSO "libperf-gtk.so"
132 /* General helper functions */
133 void usage(const char *err) NORETURN;
134 void die(const char *err, ...) NORETURN __attribute__((format (printf, 1, 2)));
135 int error(const char *err, ...) __attribute__((format (printf, 1, 2)));
136 void warning(const char *err, ...) __attribute__((format (printf, 1, 2)));
138 void set_warning_routine(void (*routine)(const char *err, va_list params));
140 int prefixcmp(const char *str, const char *prefix);
141 void set_buildid_dir(const char *dir);
143 #ifdef __GLIBC_PREREQ
144 #if __GLIBC_PREREQ(2, 1)
145 #define HAVE_STRCHRNUL
149 #ifndef HAVE_STRCHRNUL
150 #define strchrnul gitstrchrnul
151 static inline char *gitstrchrnul(const char *s, int c)
153 while (*s && *s != c)
159 static inline void *zalloc(size_t size)
161 return calloc(1, size);
164 #define zfree(ptr) ({ free(*ptr); *ptr = NULL; })
166 /* Sane ctype - no locale, and works with signed chars */
179 int parse_nsec_time(const char *str, u64 *ptime);
181 extern unsigned char sane_ctype[256];
182 #define GIT_SPACE 0x01
183 #define GIT_DIGIT 0x02
184 #define GIT_ALPHA 0x04
185 #define GIT_GLOB_SPECIAL 0x08
186 #define GIT_REGEX_SPECIAL 0x10
187 #define GIT_PRINT_EXTRA 0x20
188 #define GIT_PRINT 0x3E
189 #define sane_istest(x,mask) ((sane_ctype[(unsigned char)(x)] & (mask)) != 0)
190 #define isascii(x) (((x) & ~0x7f) == 0)
191 #define isspace(x) sane_istest(x,GIT_SPACE)
192 #define isdigit(x) sane_istest(x,GIT_DIGIT)
193 #define isxdigit(x) \
194 (sane_istest(toupper(x), GIT_ALPHA | GIT_DIGIT) && toupper(x) < 'G')
195 #define isalpha(x) sane_istest(x,GIT_ALPHA)
196 #define isalnum(x) sane_istest(x,GIT_ALPHA | GIT_DIGIT)
197 #define isprint(x) sane_istest(x,GIT_PRINT)
198 #define islower(x) (sane_istest(x,GIT_ALPHA) && (x & 0x20))
199 #define isupper(x) (sane_istest(x,GIT_ALPHA) && !(x & 0x20))
200 #define tolower(x) sane_case((unsigned char)(x), 0x20)
201 #define toupper(x) sane_case((unsigned char)(x), 0)
203 static inline int sane_case(int x, int high)
205 if (sane_istest(x, GIT_ALPHA))
206 x = (x & ~0x20) | high;
210 int mkdir_p(char *path, mode_t mode);
211 int rm_rf(char *path);
212 struct strlist *lsdir(const char *name, bool (*filter)(const char *, struct dirent *));
213 bool lsdir_no_dot_filter(const char *name, struct dirent *d);
214 int copyfile(const char *from, const char *to);
215 int copyfile_mode(const char *from, const char *to, mode_t mode);
216 int copyfile_offset(int fromfd, loff_t from_ofs, int tofd, loff_t to_ofs, u64 size);
218 s64 perf_atoll(const char *str);
219 char **argv_split(const char *str, int *argcp);
220 void argv_free(char **argv);
221 bool strglobmatch(const char *str, const char *pat);
222 bool strlazymatch(const char *str, const char *pat);
223 static inline bool strisglob(const char *str)
225 return strpbrk(str, "*?[") != NULL;
227 int strtailcmp(const char *s1, const char *s2);
228 char *strxfrchar(char *s, char from, char to);
229 unsigned long convert_unit(unsigned long value, char *unit);
230 ssize_t readn(int fd, void *buf, size_t n);
231 ssize_t writen(int fd, void *buf, size_t n);
233 struct perf_event_attr;
235 void event_attr_init(struct perf_event_attr *attr);
238 #define STR(x) _STR(x)
240 size_t hex_width(u64 v);
241 int hex2u64(const char *ptr, u64 *val);
243 char *ltrim(char *s);
244 char *rtrim(char *s);
246 static inline char *trim(char *s)
248 return ltrim(rtrim(s));
251 void dump_stack(void);
252 void sighandler_dump_stack(int sig);
254 extern unsigned int page_size;
255 extern int cacheline_size;
256 extern int sysctl_perf_event_max_stack;
257 extern int sysctl_perf_event_max_contexts_per_stack;
264 unsigned long parse_tag_value(const char *str, struct parse_tag *tags);
266 #define SRCLINE_UNKNOWN ((char *) "??:0")
268 static inline int path__join(char *bf, size_t size,
269 const char *path1, const char *path2)
271 return scnprintf(bf, size, "%s%s%s", path1, path1[0] ? "/" : "", path2);
274 static inline int path__join3(char *bf, size_t size,
275 const char *path1, const char *path2,
278 return scnprintf(bf, size, "%s%s%s%s%s",
279 path1, path1[0] ? "/" : "",
280 path2, path2[0] ? "/" : "", path3);
286 extern bool srcline_full_filename;
287 char *get_srcline(struct dso *dso, u64 addr, struct symbol *sym,
289 char *__get_srcline(struct dso *dso, u64 addr, struct symbol *sym,
290 bool show_sym, bool unwind_inlines);
291 void free_srcline(char *srcline);
293 int perf_event_paranoid(void);
295 void mem_bswap_64(void *src, int byte_size);
296 void mem_bswap_32(void *src, int byte_size);
298 const char *get_filename_for_perf_kvm(void);
299 bool find_process(const char *name);
301 #ifdef HAVE_ZLIB_SUPPORT
302 int gzip_decompress_to_file(const char *input, int output_fd);
305 #ifdef HAVE_LZMA_SUPPORT
306 int lzma_decompress_to_file(const char *input, int output_fd);
309 char *asprintf_expr_inout_ints(const char *var, bool in, size_t nints, int *ints);
311 static inline char *asprintf_expr_in_ints(const char *var, size_t nints, int *ints)
313 return asprintf_expr_inout_ints(var, true, nints, ints);
316 static inline char *asprintf_expr_not_in_ints(const char *var, size_t nints, int *ints)
318 return asprintf_expr_inout_ints(var, false, nints, ints);
321 int get_stack_size(const char *str, unsigned long *_size);
323 int fetch_kernel_version(unsigned int *puint,
324 char *str, size_t str_sz);
325 #define KVER_VERSION(x) (((x) >> 16) & 0xff)
326 #define KVER_PATCHLEVEL(x) (((x) >> 8) & 0xff)
327 #define KVER_SUBLEVEL(x) ((x) & 0xff)
328 #define KVER_FMT "%d.%d.%d"
329 #define KVER_PARAM(x) KVER_VERSION(x), KVER_PATCHLEVEL(x), KVER_SUBLEVEL(x)
331 const char *perf_tip(const char *dirpath);
332 bool is_regular_file(const char *file);
333 int fetch_current_timestamp(char *buf, size_t sz);
335 enum binary_printer_ops {
336 BINARY_PRINT_DATA_BEGIN,
337 BINARY_PRINT_LINE_BEGIN,
339 BINARY_PRINT_NUM_DATA,
340 BINARY_PRINT_NUM_PAD,
342 BINARY_PRINT_CHAR_DATA,
343 BINARY_PRINT_CHAR_PAD,
344 BINARY_PRINT_LINE_END,
345 BINARY_PRINT_DATA_END,
348 typedef void (*print_binary_t)(enum binary_printer_ops,
352 void print_binary(unsigned char *data, size_t len,
353 size_t bytes_per_line, print_binary_t printer,
356 #if !defined(__GLIBC__) && !defined(__ANDROID__)
357 extern int sched_getcpu(void);
360 int is_printable_array(char *p, unsigned int len);
361 #endif /* GIT_COMPAT_UTIL_H */