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>
58 #include <sys/param.h>
59 #include <sys/types.h>
70 #include <sys/socket.h>
71 #include <sys/ioctl.h>
73 #include <linux/kernel.h>
74 #include <linux/magic.h>
75 #include <linux/types.h>
76 #include <sys/ttydefaults.h>
77 #include <api/fs/debugfs.h>
78 #include <api/fs/tracefs.h>
80 #include <linux/bitops.h>
83 extern const char *graph_line;
84 extern const char *graph_dotted_line;
85 extern char buildid_dir[];
86 extern char tracing_path[];
87 extern char tracing_events_path[];
88 extern void perf_debugfs_set_path(const char *mountpoint);
89 const char *perf_debugfs_mount(const char *mountpoint);
90 char *get_tracing_file(const char *name);
91 void put_tracing_file(char *file);
93 /* On most systems <limits.h> would have given us this, but
94 * not on some systems (e.g. GNU/Hurd).
101 #define PRIuMAX "llu"
116 #ifndef STRIP_EXTENSION
117 #define STRIP_EXTENSION ""
120 #ifndef has_dos_drive_prefix
121 #define has_dos_drive_prefix(path) 0
125 #define is_dir_sep(c) ((c) == '/')
129 #define NORETURN __attribute__((__noreturn__))
132 #ifndef __attribute__
133 #define __attribute__(x)
137 #define PERF_GTK_DSO "libperf-gtk.so"
139 /* General helper functions */
140 extern void usage(const char *err) NORETURN;
141 extern void die(const char *err, ...) NORETURN __attribute__((format (printf, 1, 2)));
142 extern int error(const char *err, ...) __attribute__((format (printf, 1, 2)));
143 extern void warning(const char *err, ...) __attribute__((format (printf, 1, 2)));
145 #include "../../../include/linux/stringify.h"
147 #define DIE_IF(cnd) \
149 die(" at (" __FILE__ ":" __stringify(__LINE__) "): " \
150 __stringify(cnd) "\n"); \
154 extern void set_die_routine(void (*routine)(const char *err, va_list params) NORETURN);
156 extern int prefixcmp(const char *str, const char *prefix);
157 extern void set_buildid_dir(const char *dir);
159 static inline const char *skip_prefix(const char *str, const char *prefix)
161 size_t len = strlen(prefix);
162 return strncmp(str, prefix, len) ? NULL : str + len;
165 #ifdef __GLIBC_PREREQ
166 #if __GLIBC_PREREQ(2, 1)
167 #define HAVE_STRCHRNUL
171 #ifndef HAVE_STRCHRNUL
172 #define strchrnul gitstrchrnul
173 static inline char *gitstrchrnul(const char *s, int c)
175 while (*s && *s != c)
184 extern char *xstrdup(const char *str);
185 extern void *xrealloc(void *ptr, size_t size) __attribute__((weak));
188 static inline void *zalloc(size_t size)
190 return calloc(1, size);
193 #define zfree(ptr) ({ free(*ptr); *ptr = NULL; })
195 static inline int has_extension(const char *filename, const char *ext)
197 size_t len = strlen(filename);
198 size_t extlen = strlen(ext);
200 return len > extlen && !memcmp(filename + len - extlen, ext, extlen);
203 /* Sane ctype - no locale, and works with signed chars */
216 #ifndef NSEC_PER_MSEC
217 #define NSEC_PER_MSEC 1000000L
220 int parse_nsec_time(const char *str, u64 *ptime);
222 extern unsigned char sane_ctype[256];
223 #define GIT_SPACE 0x01
224 #define GIT_DIGIT 0x02
225 #define GIT_ALPHA 0x04
226 #define GIT_GLOB_SPECIAL 0x08
227 #define GIT_REGEX_SPECIAL 0x10
228 #define GIT_PRINT_EXTRA 0x20
229 #define GIT_PRINT 0x3E
230 #define sane_istest(x,mask) ((sane_ctype[(unsigned char)(x)] & (mask)) != 0)
231 #define isascii(x) (((x) & ~0x7f) == 0)
232 #define isspace(x) sane_istest(x,GIT_SPACE)
233 #define isdigit(x) sane_istest(x,GIT_DIGIT)
234 #define isxdigit(x) \
235 (sane_istest(toupper(x), GIT_ALPHA | GIT_DIGIT) && toupper(x) < 'G')
236 #define isalpha(x) sane_istest(x,GIT_ALPHA)
237 #define isalnum(x) sane_istest(x,GIT_ALPHA | GIT_DIGIT)
238 #define isprint(x) sane_istest(x,GIT_PRINT)
239 #define islower(x) (sane_istest(x,GIT_ALPHA) && (x & 0x20))
240 #define isupper(x) (sane_istest(x,GIT_ALPHA) && !(x & 0x20))
241 #define tolower(x) sane_case((unsigned char)(x), 0x20)
242 #define toupper(x) sane_case((unsigned char)(x), 0)
244 static inline int sane_case(int x, int high)
246 if (sane_istest(x, GIT_ALPHA))
247 x = (x & ~0x20) | high;
251 int mkdir_p(char *path, mode_t mode);
252 int rm_rf(char *path);
253 int copyfile(const char *from, const char *to);
254 int copyfile_mode(const char *from, const char *to, mode_t mode);
255 int copyfile_offset(int fromfd, loff_t from_ofs, int tofd, loff_t to_ofs, u64 size);
257 s64 perf_atoll(const char *str);
258 char **argv_split(const char *str, int *argcp);
259 void argv_free(char **argv);
260 bool strglobmatch(const char *str, const char *pat);
261 bool strlazymatch(const char *str, const char *pat);
262 static inline bool strisglob(const char *str)
264 return strpbrk(str, "*?[") != NULL;
266 int strtailcmp(const char *s1, const char *s2);
267 char *strxfrchar(char *s, char from, char to);
268 unsigned long convert_unit(unsigned long value, char *unit);
269 ssize_t readn(int fd, void *buf, size_t n);
270 ssize_t writen(int fd, void *buf, size_t n);
272 struct perf_event_attr;
274 void event_attr_init(struct perf_event_attr *attr);
277 #define STR(x) _STR(x)
279 size_t hex_width(u64 v);
280 int hex2u64(const char *ptr, u64 *val);
282 char *ltrim(char *s);
283 char *rtrim(char *s);
285 void dump_stack(void);
286 void sighandler_dump_stack(int sig);
288 extern unsigned int page_size;
289 extern int cacheline_size;
291 void get_term_dimensions(struct winsize *ws);
292 void set_term_quiet_input(struct termios *old);
299 unsigned long parse_tag_value(const char *str, struct parse_tag *tags);
301 #define SRCLINE_UNKNOWN ((char *) "??:0")
303 static inline int path__join(char *bf, size_t size,
304 const char *path1, const char *path2)
306 return scnprintf(bf, size, "%s%s%s", path1, path1[0] ? "/" : "", path2);
309 static inline int path__join3(char *bf, size_t size,
310 const char *path1, const char *path2,
313 return scnprintf(bf, size, "%s%s%s%s%s",
314 path1, path1[0] ? "/" : "",
315 path2, path2[0] ? "/" : "", path3);
321 extern bool srcline_full_filename;
322 char *get_srcline(struct dso *dso, u64 addr, struct symbol *sym,
324 void free_srcline(char *srcline);
326 int filename__read_str(const char *filename, char **buf, size_t *sizep);
327 int perf_event_paranoid(void);
329 void mem_bswap_64(void *src, int byte_size);
330 void mem_bswap_32(void *src, int byte_size);
332 const char *get_filename_for_perf_kvm(void);
333 bool find_process(const char *name);
335 #ifdef HAVE_ZLIB_SUPPORT
336 int gzip_decompress_to_file(const char *input, int output_fd);
339 #ifdef HAVE_LZMA_SUPPORT
340 int lzma_decompress_to_file(const char *input, int output_fd);
343 char *asprintf_expr_inout_ints(const char *var, bool in, size_t nints, int *ints);
345 static inline char *asprintf_expr_in_ints(const char *var, size_t nints, int *ints)
347 return asprintf_expr_inout_ints(var, true, nints, ints);
350 static inline char *asprintf_expr_not_in_ints(const char *var, size_t nints, int *ints)
352 return asprintf_expr_inout_ints(var, false, nints, ints);
355 int get_stack_size(const char *str, unsigned long *_size);
357 #endif /* GIT_COMPAT_UTIL_H */