1 #ifndef GIT_COMPAT_UTIL_H 2 #define GIT_COMPAT_UTIL_H 3 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 40 #define _ALL_SOURCE 1 41 #define _BSD_SOURCE 1 42 /* glibc 2.20 deprecates _BSD_SOURCE in favour of _DEFAULT_SOURCE */ 43 #define _DEFAULT_SOURCE 1 44 #define HAS_BOOL 45 46 #include <unistd.h> 47 #include <stdio.h> 48 #include <sys/stat.h> 49 #include <sys/statfs.h> 50 #include <fcntl.h> 51 #include <stdbool.h> 52 #include <stddef.h> 53 #include <stdlib.h> 54 #include <stdarg.h> 55 #include <string.h> 56 #include <term.h> 57 #include <errno.h> 58 #include <limits.h> 59 #include <sys/param.h> 60 #include <sys/types.h> 61 #include <dirent.h> 62 #include <sys/time.h> 63 #include <time.h> 64 #include <signal.h> 65 #include <fnmatch.h> 66 #include <assert.h> 67 #include <regex.h> 68 #include <utime.h> 69 #include <sys/wait.h> 70 #include <poll.h> 71 #include <sys/socket.h> 72 #include <sys/ioctl.h> 73 #include <inttypes.h> 74 #include <linux/kernel.h> 75 #include <linux/types.h> 76 #include <sys/ttydefaults.h> 77 #include <api/fs/tracing_path.h> 78 #include <termios.h> 79 #include <linux/bitops.h> 80 #include <termios.h> 81 #include "strlist.h" 82 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[]; 88 89 /* On most systems <limits.h> would have given us this, but 90 * not on some systems (e.g. GNU/Hurd). 91 */ 92 #ifndef PATH_MAX 93 #define PATH_MAX 4096 94 #endif 95 96 #ifndef PRIuMAX 97 #define PRIuMAX "llu" 98 #endif 99 100 #ifndef PRIu32 101 #define PRIu32 "u" 102 #endif 103 104 #ifndef PRIx32 105 #define PRIx32 "x" 106 #endif 107 108 #ifndef PATH_SEP 109 #define PATH_SEP ':' 110 #endif 111 112 #ifndef STRIP_EXTENSION 113 #define STRIP_EXTENSION "" 114 #endif 115 116 #ifndef has_dos_drive_prefix 117 #define has_dos_drive_prefix(path) 0 118 #endif 119 120 #ifndef is_dir_sep 121 #define is_dir_sep(c) ((c) == '/') 122 #endif 123 124 #ifdef __GNUC__ 125 #define NORETURN __attribute__((__noreturn__)) 126 #else 127 #define NORETURN 128 #ifndef __attribute__ 129 #define __attribute__(x) 130 #endif 131 #endif 132 133 #define PERF_GTK_DSO "libperf-gtk.so" 134 135 /* 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))); 140 141 void set_warning_routine(void (*routine)(const char *err, va_list params)); 142 143 int prefixcmp(const char *str, const char *prefix); 144 void set_buildid_dir(const char *dir); 145 146 #ifdef __GLIBC_PREREQ 147 #if __GLIBC_PREREQ(2, 1) 148 #define HAVE_STRCHRNUL 149 #endif 150 #endif 151 152 #ifndef HAVE_STRCHRNUL 153 #define strchrnul gitstrchrnul 154 static inline char *gitstrchrnul(const char *s, int c) 155 { 156 while (*s && *s != c) 157 s++; 158 return (char *)s; 159 } 160 #endif 161 162 static inline void *zalloc(size_t size) 163 { 164 return calloc(1, size); 165 } 166 167 #define zfree(ptr) ({ free(*ptr); *ptr = NULL; }) 168 169 /* Sane ctype - no locale, and works with signed chars */ 170 #undef isascii 171 #undef isspace 172 #undef isdigit 173 #undef isxdigit 174 #undef isalpha 175 #undef isprint 176 #undef isalnum 177 #undef islower 178 #undef isupper 179 #undef tolower 180 #undef toupper 181 182 int parse_nsec_time(const char *str, u64 *ptime); 183 184 extern unsigned char sane_ctype[256]; 185 #define GIT_SPACE 0x01 186 #define GIT_DIGIT 0x02 187 #define GIT_ALPHA 0x04 188 #define GIT_GLOB_SPECIAL 0x08 189 #define GIT_REGEX_SPECIAL 0x10 190 #define GIT_PRINT_EXTRA 0x20 191 #define GIT_PRINT 0x3E 192 #define sane_istest(x,mask) ((sane_ctype[(unsigned char)(x)] & (mask)) != 0) 193 #define isascii(x) (((x) & ~0x7f) == 0) 194 #define isspace(x) sane_istest(x,GIT_SPACE) 195 #define isdigit(x) sane_istest(x,GIT_DIGIT) 196 #define isxdigit(x) \ 197 (sane_istest(toupper(x), GIT_ALPHA | GIT_DIGIT) && toupper(x) < 'G') 198 #define isalpha(x) sane_istest(x,GIT_ALPHA) 199 #define isalnum(x) sane_istest(x,GIT_ALPHA | GIT_DIGIT) 200 #define isprint(x) sane_istest(x,GIT_PRINT) 201 #define islower(x) (sane_istest(x,GIT_ALPHA) && (x & 0x20)) 202 #define isupper(x) (sane_istest(x,GIT_ALPHA) && !(x & 0x20)) 203 #define tolower(x) sane_case((unsigned char)(x), 0x20) 204 #define toupper(x) sane_case((unsigned char)(x), 0) 205 206 static inline int sane_case(int x, int high) 207 { 208 if (sane_istest(x, GIT_ALPHA)) 209 x = (x & ~0x20) | high; 210 return x; 211 } 212 213 int mkdir_p(char *path, mode_t mode); 214 int rm_rf(char *path); 215 struct strlist *lsdir(const char *name, bool (*filter)(const char *, struct dirent *)); 216 bool lsdir_no_dot_filter(const char *name, struct dirent *d); 217 int copyfile(const char *from, const char *to); 218 int copyfile_mode(const char *from, const char *to, mode_t mode); 219 int copyfile_offset(int fromfd, loff_t from_ofs, int tofd, loff_t to_ofs, u64 size); 220 221 s64 perf_atoll(const char *str); 222 char **argv_split(const char *str, int *argcp); 223 void argv_free(char **argv); 224 bool strglobmatch(const char *str, const char *pat); 225 bool strlazymatch(const char *str, const char *pat); 226 static inline bool strisglob(const char *str) 227 { 228 return strpbrk(str, "*?[") != NULL; 229 } 230 int strtailcmp(const char *s1, const char *s2); 231 char *strxfrchar(char *s, char from, char to); 232 unsigned long convert_unit(unsigned long value, char *unit); 233 ssize_t readn(int fd, void *buf, size_t n); 234 ssize_t writen(int fd, void *buf, size_t n); 235 236 struct perf_event_attr; 237 238 void event_attr_init(struct perf_event_attr *attr); 239 240 #define _STR(x) #x 241 #define STR(x) _STR(x) 242 243 size_t hex_width(u64 v); 244 int hex2u64(const char *ptr, u64 *val); 245 246 char *ltrim(char *s); 247 char *rtrim(char *s); 248 249 static inline char *trim(char *s) 250 { 251 return ltrim(rtrim(s)); 252 } 253 254 void dump_stack(void); 255 void sighandler_dump_stack(int sig); 256 257 extern unsigned int page_size; 258 extern int cacheline_size; 259 extern int sysctl_perf_event_max_stack; 260 extern int sysctl_perf_event_max_contexts_per_stack; 261 262 struct parse_tag { 263 char tag; 264 int mult; 265 }; 266 267 unsigned long parse_tag_value(const char *str, struct parse_tag *tags); 268 269 #define SRCLINE_UNKNOWN ((char *) "??:0") 270 271 static inline int path__join(char *bf, size_t size, 272 const char *path1, const char *path2) 273 { 274 return scnprintf(bf, size, "%s%s%s", path1, path1[0] ? "/" : "", path2); 275 } 276 277 static inline int path__join3(char *bf, size_t size, 278 const char *path1, const char *path2, 279 const char *path3) 280 { 281 return scnprintf(bf, size, "%s%s%s%s%s", 282 path1, path1[0] ? "/" : "", 283 path2, path2[0] ? "/" : "", path3); 284 } 285 286 struct dso; 287 struct symbol; 288 289 extern bool srcline_full_filename; 290 char *get_srcline(struct dso *dso, u64 addr, struct symbol *sym, 291 bool show_sym); 292 char *__get_srcline(struct dso *dso, u64 addr, struct symbol *sym, 293 bool show_sym, bool unwind_inlines); 294 void free_srcline(char *srcline); 295 296 int perf_event_paranoid(void); 297 298 void mem_bswap_64(void *src, int byte_size); 299 void mem_bswap_32(void *src, int byte_size); 300 301 const char *get_filename_for_perf_kvm(void); 302 bool find_process(const char *name); 303 304 #ifdef HAVE_ZLIB_SUPPORT 305 int gzip_decompress_to_file(const char *input, int output_fd); 306 #endif 307 308 #ifdef HAVE_LZMA_SUPPORT 309 int lzma_decompress_to_file(const char *input, int output_fd); 310 #endif 311 312 char *asprintf_expr_inout_ints(const char *var, bool in, size_t nints, int *ints); 313 314 static inline char *asprintf_expr_in_ints(const char *var, size_t nints, int *ints) 315 { 316 return asprintf_expr_inout_ints(var, true, nints, ints); 317 } 318 319 static inline char *asprintf_expr_not_in_ints(const char *var, size_t nints, int *ints) 320 { 321 return asprintf_expr_inout_ints(var, false, nints, ints); 322 } 323 324 int get_stack_size(const char *str, unsigned long *_size); 325 326 int fetch_kernel_version(unsigned int *puint, 327 char *str, size_t str_sz); 328 #define KVER_VERSION(x) (((x) >> 16) & 0xff) 329 #define KVER_PATCHLEVEL(x) (((x) >> 8) & 0xff) 330 #define KVER_SUBLEVEL(x) ((x) & 0xff) 331 #define KVER_FMT "%d.%d.%d" 332 #define KVER_PARAM(x) KVER_VERSION(x), KVER_PATCHLEVEL(x), KVER_SUBLEVEL(x) 333 334 const char *perf_tip(const char *dirpath); 335 bool is_regular_file(const char *file); 336 int fetch_current_timestamp(char *buf, size_t sz); 337 338 enum binary_printer_ops { 339 BINARY_PRINT_DATA_BEGIN, 340 BINARY_PRINT_LINE_BEGIN, 341 BINARY_PRINT_ADDR, 342 BINARY_PRINT_NUM_DATA, 343 BINARY_PRINT_NUM_PAD, 344 BINARY_PRINT_SEP, 345 BINARY_PRINT_CHAR_DATA, 346 BINARY_PRINT_CHAR_PAD, 347 BINARY_PRINT_LINE_END, 348 BINARY_PRINT_DATA_END, 349 }; 350 351 typedef void (*print_binary_t)(enum binary_printer_ops, 352 unsigned int val, 353 void *extra); 354 355 void print_binary(unsigned char *data, size_t len, 356 size_t bytes_per_line, print_binary_t printer, 357 void *extra); 358 359 #if !defined(__GLIBC__) && !defined(__ANDROID__) 360 extern int sched_getcpu(void); 361 #endif 362 363 int is_printable_array(char *p, unsigned int len); 364 #endif /* GIT_COMPAT_UTIL_H */ 365