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>
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 extern void usage(const char *err) NORETURN;
137 extern void die(const char *err, ...) NORETURN __attribute__((format (printf, 1, 2)));
138 extern int error(const char *err, ...) __attribute__((format (printf, 1, 2)));
139 extern void warning(const char *err, ...) __attribute__((format (printf, 1, 2)));
141 #include "../../../include/linux/stringify.h"
143 #define DIE_IF(cnd) \
145 die(" at (" __FILE__ ":" __stringify(__LINE__) "): " \
146 __stringify(cnd) "\n"); \
150 extern void set_die_routine(void (*routine)(const char *err, va_list params) NORETURN);
151 extern void set_warning_routine(void (*routine)(const char *err, va_list params));
153 extern int prefixcmp(const char *str, const char *prefix);
154 extern void set_buildid_dir(const char *dir);
156 #ifdef __GLIBC_PREREQ
157 #if __GLIBC_PREREQ(2, 1)
158 #define HAVE_STRCHRNUL
162 #ifndef HAVE_STRCHRNUL
163 #define strchrnul gitstrchrnul
164 static inline char *gitstrchrnul(const char *s, int c)
166 while (*s && *s != c)
175 extern char *xstrdup(const char *str);
176 extern void *xrealloc(void *ptr, size_t size) __attribute__((weak));
179 static inline void *zalloc(size_t size)
181 return calloc(1, size);
184 #define zfree(ptr) ({ free(*ptr); *ptr = NULL; })
186 /* Sane ctype - no locale, and works with signed chars */
199 #ifndef NSEC_PER_MSEC
200 #define NSEC_PER_MSEC 1000000L
203 int parse_nsec_time(const char *str, u64 *ptime);
205 extern unsigned char sane_ctype[256];
206 #define GIT_SPACE 0x01
207 #define GIT_DIGIT 0x02
208 #define GIT_ALPHA 0x04
209 #define GIT_GLOB_SPECIAL 0x08
210 #define GIT_REGEX_SPECIAL 0x10
211 #define GIT_PRINT_EXTRA 0x20
212 #define GIT_PRINT 0x3E
213 #define sane_istest(x,mask) ((sane_ctype[(unsigned char)(x)] & (mask)) != 0)
214 #define isascii(x) (((x) & ~0x7f) == 0)
215 #define isspace(x) sane_istest(x,GIT_SPACE)
216 #define isdigit(x) sane_istest(x,GIT_DIGIT)
217 #define isxdigit(x) \
218 (sane_istest(toupper(x), GIT_ALPHA | GIT_DIGIT) && toupper(x) < 'G')
219 #define isalpha(x) sane_istest(x,GIT_ALPHA)
220 #define isalnum(x) sane_istest(x,GIT_ALPHA | GIT_DIGIT)
221 #define isprint(x) sane_istest(x,GIT_PRINT)
222 #define islower(x) (sane_istest(x,GIT_ALPHA) && (x & 0x20))
223 #define isupper(x) (sane_istest(x,GIT_ALPHA) && !(x & 0x20))
224 #define tolower(x) sane_case((unsigned char)(x), 0x20)
225 #define toupper(x) sane_case((unsigned char)(x), 0)
227 static inline int sane_case(int x, int high)
229 if (sane_istest(x, GIT_ALPHA))
230 x = (x & ~0x20) | high;
234 int mkdir_p(char *path, mode_t mode);
235 int rm_rf(char *path);
236 int copyfile(const char *from, const char *to);
237 int copyfile_mode(const char *from, const char *to, mode_t mode);
238 int copyfile_offset(int fromfd, loff_t from_ofs, int tofd, loff_t to_ofs, u64 size);
240 s64 perf_atoll(const char *str);
241 char **argv_split(const char *str, int *argcp);
242 void argv_free(char **argv);
243 bool strglobmatch(const char *str, const char *pat);
244 bool strlazymatch(const char *str, const char *pat);
245 static inline bool strisglob(const char *str)
247 return strpbrk(str, "*?[") != NULL;
249 int strtailcmp(const char *s1, const char *s2);
250 char *strxfrchar(char *s, char from, char to);
251 unsigned long convert_unit(unsigned long value, char *unit);
252 ssize_t readn(int fd, void *buf, size_t n);
253 ssize_t writen(int fd, void *buf, size_t n);
255 struct perf_event_attr;
257 void event_attr_init(struct perf_event_attr *attr);
260 #define STR(x) _STR(x)
262 size_t hex_width(u64 v);
263 int hex2u64(const char *ptr, u64 *val);
265 char *ltrim(char *s);
266 char *rtrim(char *s);
268 void dump_stack(void);
269 void sighandler_dump_stack(int sig);
271 extern unsigned int page_size;
272 extern int cacheline_size;
279 unsigned long parse_tag_value(const char *str, struct parse_tag *tags);
281 #define SRCLINE_UNKNOWN ((char *) "??:0")
283 static inline int path__join(char *bf, size_t size,
284 const char *path1, const char *path2)
286 return scnprintf(bf, size, "%s%s%s", path1, path1[0] ? "/" : "", path2);
289 static inline int path__join3(char *bf, size_t size,
290 const char *path1, const char *path2,
293 return scnprintf(bf, size, "%s%s%s%s%s",
294 path1, path1[0] ? "/" : "",
295 path2, path2[0] ? "/" : "", path3);
301 extern bool srcline_full_filename;
302 char *get_srcline(struct dso *dso, u64 addr, struct symbol *sym,
304 char *__get_srcline(struct dso *dso, u64 addr, struct symbol *sym,
305 bool show_sym, bool unwind_inlines);
306 void free_srcline(char *srcline);
308 int perf_event_paranoid(void);
310 void mem_bswap_64(void *src, int byte_size);
311 void mem_bswap_32(void *src, int byte_size);
313 const char *get_filename_for_perf_kvm(void);
314 bool find_process(const char *name);
316 #ifdef HAVE_ZLIB_SUPPORT
317 int gzip_decompress_to_file(const char *input, int output_fd);
320 #ifdef HAVE_LZMA_SUPPORT
321 int lzma_decompress_to_file(const char *input, int output_fd);
324 char *asprintf_expr_inout_ints(const char *var, bool in, size_t nints, int *ints);
326 static inline char *asprintf_expr_in_ints(const char *var, size_t nints, int *ints)
328 return asprintf_expr_inout_ints(var, true, nints, ints);
331 static inline char *asprintf_expr_not_in_ints(const char *var, size_t nints, int *ints)
333 return asprintf_expr_inout_ints(var, false, nints, ints);
336 int get_stack_size(const char *str, unsigned long *_size);
338 int fetch_kernel_version(unsigned int *puint,
339 char *str, size_t str_sz);
340 #define KVER_VERSION(x) (((x) >> 16) & 0xff)
341 #define KVER_PATCHLEVEL(x) (((x) >> 8) & 0xff)
342 #define KVER_SUBLEVEL(x) ((x) & 0xff)
343 #define KVER_FMT "%d.%d.%d"
344 #define KVER_PARAM(x) KVER_VERSION(x), KVER_PATCHLEVEL(x), KVER_SUBLEVEL(x)
346 const char *perf_tip(const char *dirpath);
347 bool is_regular_file(const char *file);
348 int fetch_current_timestamp(char *buf, size_t sz);
350 enum binary_printer_ops {
351 BINARY_PRINT_DATA_BEGIN,
352 BINARY_PRINT_LINE_BEGIN,
354 BINARY_PRINT_NUM_DATA,
355 BINARY_PRINT_NUM_PAD,
357 BINARY_PRINT_CHAR_DATA,
358 BINARY_PRINT_CHAR_PAD,
359 BINARY_PRINT_LINE_END,
360 BINARY_PRINT_DATA_END,
363 typedef void (*print_binary_t)(enum binary_printer_ops,
367 void print_binary(unsigned char *data, size_t len,
368 size_t bytes_per_line, print_binary_t printer,
370 #endif /* GIT_COMPAT_UTIL_H */