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07800601 IM |
1 | #ifndef GIT_COMPAT_UTIL_H |
2 | #define GIT_COMPAT_UTIL_H | |
3 | ||
07800601 IM |
4 | #ifndef FLEX_ARRAY |
5 | /* | |
6 | * See if our compiler is known to support flexible array members. | |
7 | */ | |
8 | #if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) | |
9 | # define FLEX_ARRAY /* empty */ | |
10 | #elif defined(__GNUC__) | |
11 | # if (__GNUC__ >= 3) | |
12 | # define FLEX_ARRAY /* empty */ | |
13 | # else | |
14 | # define FLEX_ARRAY 0 /* older GNU extension */ | |
15 | # endif | |
16 | #endif | |
17 | ||
18 | /* | |
19 | * Otherwise, default to safer but a bit wasteful traditional style | |
20 | */ | |
21 | #ifndef FLEX_ARRAY | |
22 | # define FLEX_ARRAY 1 | |
23 | #endif | |
24 | #endif | |
25 | ||
26 | #define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0])) | |
27 | ||
28 | #ifdef __GNUC__ | |
29 | #define TYPEOF(x) (__typeof__(x)) | |
30 | #else | |
31 | #define TYPEOF(x) | |
32 | #endif | |
33 | ||
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 */ | |
36 | ||
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) | |
39 | ||
07800601 | 40 | #define _ALL_SOURCE 1 |
07800601 | 41 | #define _BSD_SOURCE 1 |
512fe365 CP |
42 | /* glibc 2.20 deprecates _BSD_SOURCE in favour of _DEFAULT_SOURCE */ |
43 | #define _DEFAULT_SOURCE 1 | |
e206d556 | 44 | #define HAS_BOOL |
07800601 IM |
45 | |
46 | #include <unistd.h> | |
47 | #include <stdio.h> | |
48 | #include <sys/stat.h> | |
f6bdafef | 49 | #include <sys/statfs.h> |
07800601 | 50 | #include <fcntl.h> |
e206d556 | 51 | #include <stdbool.h> |
07800601 IM |
52 | #include <stddef.h> |
53 | #include <stdlib.h> | |
54 | #include <stdarg.h> | |
55 | #include <string.h> | |
56 | #include <errno.h> | |
57 | #include <limits.h> | |
58 | #include <sys/param.h> | |
59 | #include <sys/types.h> | |
60 | #include <dirent.h> | |
61 | #include <sys/time.h> | |
62 | #include <time.h> | |
63 | #include <signal.h> | |
64 | #include <fnmatch.h> | |
65 | #include <assert.h> | |
66 | #include <regex.h> | |
67 | #include <utime.h> | |
07800601 | 68 | #include <sys/wait.h> |
a8fa4960 | 69 | #include <poll.h> |
07800601 IM |
70 | #include <sys/socket.h> |
71 | #include <sys/ioctl.h> | |
07800601 | 72 | #include <inttypes.h> |
972f393b | 73 | #include <linux/kernel.h> |
f8fcd776 | 74 | #include <linux/magic.h> |
d944c4ee | 75 | #include <linux/types.h> |
46e3e055 | 76 | #include <sys/ttydefaults.h> |
553873e1 | 77 | #include <api/fs/debugfs.h> |
756bbc84 | 78 | #include <termios.h> |
1dbfa938 | 79 | #include <linux/bitops.h> |
9398c484 | 80 | #include <termios.h> |
1fe2c106 | 81 | |
2890284b ACM |
82 | extern const char *graph_line; |
83 | extern const char *graph_dotted_line; | |
45de34bb | 84 | extern char buildid_dir[]; |
1355915a BP |
85 | extern char tracing_events_path[]; |
86 | extern void perf_debugfs_set_path(const char *mountpoint); | |
87 | const char *perf_debugfs_mount(const char *mountpoint); | |
167aedc4 NK |
88 | const char *find_tracing_dir(void); |
89 | char *get_tracing_file(const char *name); | |
90 | void put_tracing_file(char *file); | |
2890284b | 91 | |
07800601 IM |
92 | /* On most systems <limits.h> would have given us this, but |
93 | * not on some systems (e.g. GNU/Hurd). | |
94 | */ | |
95 | #ifndef PATH_MAX | |
96 | #define PATH_MAX 4096 | |
97 | #endif | |
98 | ||
99 | #ifndef PRIuMAX | |
100 | #define PRIuMAX "llu" | |
101 | #endif | |
102 | ||
103 | #ifndef PRIu32 | |
104 | #define PRIu32 "u" | |
105 | #endif | |
106 | ||
107 | #ifndef PRIx32 | |
108 | #define PRIx32 "x" | |
109 | #endif | |
110 | ||
111 | #ifndef PATH_SEP | |
112 | #define PATH_SEP ':' | |
113 | #endif | |
114 | ||
115 | #ifndef STRIP_EXTENSION | |
116 | #define STRIP_EXTENSION "" | |
117 | #endif | |
118 | ||
119 | #ifndef has_dos_drive_prefix | |
120 | #define has_dos_drive_prefix(path) 0 | |
121 | #endif | |
122 | ||
123 | #ifndef is_dir_sep | |
124 | #define is_dir_sep(c) ((c) == '/') | |
125 | #endif | |
126 | ||
127 | #ifdef __GNUC__ | |
128 | #define NORETURN __attribute__((__noreturn__)) | |
129 | #else | |
130 | #define NORETURN | |
131 | #ifndef __attribute__ | |
132 | #define __attribute__(x) | |
133 | #endif | |
134 | #endif | |
135 | ||
fc67297b NK |
136 | #define PERF_GTK_DSO "libperf-gtk.so" |
137 | ||
07800601 IM |
138 | /* General helper functions */ |
139 | extern void usage(const char *err) NORETURN; | |
140 | extern void die(const char *err, ...) NORETURN __attribute__((format (printf, 1, 2))); | |
141 | extern int error(const char *err, ...) __attribute__((format (printf, 1, 2))); | |
142 | extern void warning(const char *err, ...) __attribute__((format (printf, 1, 2))); | |
143 | ||
9769833b MH |
144 | #include "../../../include/linux/stringify.h" |
145 | ||
146 | #define DIE_IF(cnd) \ | |
147 | do { if (cnd) \ | |
148 | die(" at (" __FILE__ ":" __stringify(__LINE__) "): " \ | |
149 | __stringify(cnd) "\n"); \ | |
150 | } while (0) | |
151 | ||
152 | ||
07800601 IM |
153 | extern void set_die_routine(void (*routine)(const char *err, va_list params) NORETURN); |
154 | ||
155 | extern int prefixcmp(const char *str, const char *prefix); | |
45de34bb | 156 | extern void set_buildid_dir(void); |
07800601 IM |
157 | |
158 | static inline const char *skip_prefix(const char *str, const char *prefix) | |
159 | { | |
160 | size_t len = strlen(prefix); | |
161 | return strncmp(str, prefix, len) ? NULL : str + len; | |
162 | } | |
163 | ||
07800601 IM |
164 | #ifdef __GLIBC_PREREQ |
165 | #if __GLIBC_PREREQ(2, 1) | |
166 | #define HAVE_STRCHRNUL | |
167 | #endif | |
168 | #endif | |
169 | ||
170 | #ifndef HAVE_STRCHRNUL | |
171 | #define strchrnul gitstrchrnul | |
172 | static inline char *gitstrchrnul(const char *s, int c) | |
173 | { | |
174 | while (*s && *s != c) | |
175 | s++; | |
176 | return (char *)s; | |
177 | } | |
178 | #endif | |
179 | ||
6f06ccbc IM |
180 | /* |
181 | * Wrappers: | |
182 | */ | |
183 | extern char *xstrdup(const char *str); | |
727dad10 | 184 | extern void *xrealloc(void *ptr, size_t size) __attribute__((weak)); |
16f762a2 | 185 | |
a1d37d52 | 186 | |
36479484 ACM |
187 | static inline void *zalloc(size_t size) |
188 | { | |
189 | return calloc(1, size); | |
190 | } | |
191 | ||
04662523 ACM |
192 | #define zfree(ptr) ({ free(*ptr); *ptr = NULL; }) |
193 | ||
07800601 IM |
194 | static inline int has_extension(const char *filename, const char *ext) |
195 | { | |
196 | size_t len = strlen(filename); | |
197 | size_t extlen = strlen(ext); | |
a1d37d52 | 198 | |
07800601 IM |
199 | return len > extlen && !memcmp(filename + len - extlen, ext, extlen); |
200 | } | |
201 | ||
202 | /* Sane ctype - no locale, and works with signed chars */ | |
203 | #undef isascii | |
204 | #undef isspace | |
205 | #undef isdigit | |
9e827dd0 | 206 | #undef isxdigit |
07800601 | 207 | #undef isalpha |
5f9c39dc | 208 | #undef isprint |
07800601 | 209 | #undef isalnum |
2cd13b0f NK |
210 | #undef islower |
211 | #undef isupper | |
07800601 IM |
212 | #undef tolower |
213 | #undef toupper | |
a1d37d52 | 214 | |
752fde44 ACM |
215 | #ifndef NSEC_PER_MSEC |
216 | #define NSEC_PER_MSEC 1000000L | |
217 | #endif | |
218 | ||
3b47abe1 NK |
219 | int parse_nsec_time(const char *str, u64 *ptime); |
220 | ||
07800601 | 221 | extern unsigned char sane_ctype[256]; |
a73c7d84 PZ |
222 | #define GIT_SPACE 0x01 |
223 | #define GIT_DIGIT 0x02 | |
224 | #define GIT_ALPHA 0x04 | |
225 | #define GIT_GLOB_SPECIAL 0x08 | |
226 | #define GIT_REGEX_SPECIAL 0x10 | |
227 | #define GIT_PRINT_EXTRA 0x20 | |
228 | #define GIT_PRINT 0x3E | |
07800601 IM |
229 | #define sane_istest(x,mask) ((sane_ctype[(unsigned char)(x)] & (mask)) != 0) |
230 | #define isascii(x) (((x) & ~0x7f) == 0) | |
231 | #define isspace(x) sane_istest(x,GIT_SPACE) | |
232 | #define isdigit(x) sane_istest(x,GIT_DIGIT) | |
9e827dd0 FW |
233 | #define isxdigit(x) \ |
234 | (sane_istest(toupper(x), GIT_ALPHA | GIT_DIGIT) && toupper(x) < 'G') | |
07800601 IM |
235 | #define isalpha(x) sane_istest(x,GIT_ALPHA) |
236 | #define isalnum(x) sane_istest(x,GIT_ALPHA | GIT_DIGIT) | |
a73c7d84 | 237 | #define isprint(x) sane_istest(x,GIT_PRINT) |
6956664a SB |
238 | #define islower(x) (sane_istest(x,GIT_ALPHA) && (x & 0x20)) |
239 | #define isupper(x) (sane_istest(x,GIT_ALPHA) && !(x & 0x20)) | |
07800601 IM |
240 | #define tolower(x) sane_case((unsigned char)(x), 0x20) |
241 | #define toupper(x) sane_case((unsigned char)(x), 0) | |
242 | ||
243 | static inline int sane_case(int x, int high) | |
244 | { | |
245 | if (sane_istest(x, GIT_ALPHA)) | |
246 | x = (x & ~0x20) | high; | |
247 | return x; | |
248 | } | |
249 | ||
4cf40131 ACM |
250 | int mkdir_p(char *path, mode_t mode); |
251 | int copyfile(const char *from, const char *to); | |
9a17d726 | 252 | int copyfile_mode(const char *from, const char *to, mode_t mode); |
4cf40131 | 253 | |
e206d556 ACM |
254 | s64 perf_atoll(const char *str); |
255 | char **argv_split(const char *str, int *argcp); | |
256 | void argv_free(char **argv); | |
257 | bool strglobmatch(const char *str, const char *pat); | |
258 | bool strlazymatch(const char *str, const char *pat); | |
bad03ae4 | 259 | int strtailcmp(const char *s1, const char *s2); |
ea36c46b | 260 | char *strxfrchar(char *s, char from, char to); |
c82ee828 | 261 | unsigned long convert_unit(unsigned long value, char *unit); |
727ebd54 | 262 | ssize_t readn(int fd, void *buf, size_t n); |
bc3a502b | 263 | ssize_t writen(int fd, void *buf, size_t n); |
e206d556 | 264 | |
1aed2671 JR |
265 | struct perf_event_attr; |
266 | ||
267 | void event_attr_init(struct perf_event_attr *attr); | |
268 | ||
e206d556 ACM |
269 | #define _STR(x) #x |
270 | #define STR(x) _STR(x) | |
271 | ||
41d0d933 NE |
272 | /* |
273 | * Determine whether some value is a power of two, where zero is | |
274 | * *not* considered a power of two. | |
275 | */ | |
276 | ||
277 | static inline __attribute__((const)) | |
278 | bool is_power_of_2(unsigned long n) | |
279 | { | |
280 | return (n != 0 && ((n & (n - 1)) == 0)); | |
281 | } | |
282 | ||
27050f53 JO |
283 | static inline unsigned next_pow2(unsigned x) |
284 | { | |
285 | if (!x) | |
286 | return 1; | |
287 | return 1ULL << (32 - __builtin_clz(x - 1)); | |
288 | } | |
289 | ||
1dbfa938 AH |
290 | static inline unsigned long next_pow2_l(unsigned long x) |
291 | { | |
292 | #if BITS_PER_LONG == 64 | |
293 | if (x <= (1UL << 31)) | |
294 | return next_pow2(x); | |
295 | return (unsigned long)next_pow2(x >> 32) << 32; | |
296 | #else | |
297 | return next_pow2(x); | |
298 | #endif | |
299 | } | |
300 | ||
61e04b33 | 301 | size_t hex_width(u64 v); |
b2aff5f6 | 302 | int hex2u64(const char *ptr, u64 *val); |
61e04b33 | 303 | |
08aa9cce | 304 | char *ltrim(char *s); |
cb1a28a0 ACM |
305 | char *rtrim(char *s); |
306 | ||
dc4552bf ACM |
307 | void dump_stack(void); |
308 | ||
0c1fe6b2 | 309 | extern unsigned int page_size; |
2b1b7100 | 310 | extern int cacheline_size; |
0c1fe6b2 | 311 | |
2c803e52 | 312 | void get_term_dimensions(struct winsize *ws); |
9398c484 | 313 | void set_term_quiet_input(struct termios *old); |
27050f53 JO |
314 | |
315 | struct parse_tag { | |
316 | char tag; | |
317 | int mult; | |
318 | }; | |
319 | ||
320 | unsigned long parse_tag_value(const char *str, struct parse_tag *tags); | |
f048d548 NK |
321 | |
322 | #define SRCLINE_UNKNOWN ((char *) "??:0") | |
323 | ||
972f393b ACM |
324 | static inline int path__join(char *bf, size_t size, |
325 | const char *path1, const char *path2) | |
326 | { | |
327 | return scnprintf(bf, size, "%s%s%s", path1, path1[0] ? "/" : "", path2); | |
328 | } | |
329 | ||
330 | static inline int path__join3(char *bf, size_t size, | |
331 | const char *path1, const char *path2, | |
332 | const char *path3) | |
333 | { | |
334 | return scnprintf(bf, size, "%s%s%s%s%s", | |
335 | path1, path1[0] ? "/" : "", | |
336 | path2, path2[0] ? "/" : "", path3); | |
337 | } | |
338 | ||
86c98cab | 339 | struct dso; |
85c116a6 | 340 | struct symbol; |
86c98cab | 341 | |
85c116a6 AK |
342 | char *get_srcline(struct dso *dso, unsigned long addr, struct symbol *sym, |
343 | bool show_sym); | |
f048d548 | 344 | void free_srcline(char *srcline); |
97a07f10 ACM |
345 | |
346 | int filename__read_int(const char *filename, int *value); | |
cef82c9f | 347 | int filename__read_str(const char *filename, char **buf, size_t *sizep); |
1a47245d | 348 | int perf_event_paranoid(void); |
e1a2b174 | 349 | |
71db07b1 AH |
350 | void mem_bswap_64(void *src, int byte_size); |
351 | void mem_bswap_32(void *src, int byte_size); | |
352 | ||
e1a2b174 | 353 | const char *get_filename_for_perf_kvm(void); |
63914aca | 354 | bool find_process(const char *name); |
e92ce12e NK |
355 | |
356 | #ifdef HAVE_ZLIB_SUPPORT | |
357 | int gzip_decompress_to_file(const char *input, int output_fd); | |
358 | #endif | |
359 | ||
1355915a | 360 | #endif /* GIT_COMPAT_UTIL_H */ |