1 #ifndef GIT_COMPAT_UTIL_H 2 #define GIT_COMPAT_UTIL_H 3 4 #ifdef __GNUC__ 5 #define TYPEOF(x) (__typeof__(x)) 6 #else 7 #define TYPEOF(x) 8 #endif 9 10 #define MSB(x, bits) ((x) & TYPEOF(x)(~0ULL << (sizeof(x) * 8 - (bits)))) 11 #define HAS_MULTI_BITS(i) ((i) & ((i) - 1)) /* checks if an integer has more than 1 bit set */ 12 13 /* Approximation of the length of the decimal representation of this type. */ 14 #define decimal_length(x) ((int)(sizeof(x) * 2.56 + 0.5) + 1) 15 16 #define _ALL_SOURCE 1 17 #define _BSD_SOURCE 1 18 /* glibc 2.20 deprecates _BSD_SOURCE in favour of _DEFAULT_SOURCE */ 19 #define _DEFAULT_SOURCE 1 20 #define HAS_BOOL 21 22 #include <unistd.h> 23 #include <stdio.h> 24 #include <sys/stat.h> 25 #include <sys/statfs.h> 26 #include <fcntl.h> 27 #include <stdbool.h> 28 #include <stddef.h> 29 #include <stdlib.h> 30 #include <stdarg.h> 31 #include <string.h> 32 #include <term.h> 33 #include <errno.h> 34 #include <limits.h> 35 #include <sys/param.h> 36 #include <sys/types.h> 37 #include <dirent.h> 38 #include <sys/time.h> 39 #include <time.h> 40 #include <signal.h> 41 #include <fnmatch.h> 42 #include <assert.h> 43 #include <regex.h> 44 #include <utime.h> 45 #include <sys/wait.h> 46 #include <poll.h> 47 #include <sys/socket.h> 48 #include <sys/ioctl.h> 49 #include <inttypes.h> 50 #include <linux/kernel.h> 51 #include <linux/types.h> 52 #include <sys/ttydefaults.h> 53 #include <api/fs/tracing_path.h> 54 #include <termios.h> 55 #include <linux/bitops.h> 56 #include <termios.h> 57 #include "strlist.h" 58 59 extern const char *graph_line; 60 extern const char *graph_dotted_line; 61 extern const char *spaces; 62 extern const char *dots; 63 extern char buildid_dir[]; 64 65 /* On most systems <limits.h> would have given us this, but 66 * not on some systems (e.g. GNU/Hurd). 67 */ 68 #ifndef PATH_MAX 69 #define PATH_MAX 4096 70 #endif 71 72 #ifndef PRIuMAX 73 #define PRIuMAX "llu" 74 #endif 75 76 #ifndef PRIu32 77 #define PRIu32 "u" 78 #endif 79 80 #ifndef PRIx32 81 #define PRIx32 "x" 82 #endif 83 84 #ifndef PATH_SEP 85 #define PATH_SEP ':' 86 #endif 87 88 #ifndef STRIP_EXTENSION 89 #define STRIP_EXTENSION "" 90 #endif 91 92 #ifndef has_dos_drive_prefix 93 #define has_dos_drive_prefix(path) 0 94 #endif 95 96 #ifndef is_dir_sep 97 #define is_dir_sep(c) ((c) == '/') 98 #endif 99 100 #ifdef __GNUC__ 101 #define NORETURN __attribute__((__noreturn__)) 102 #else 103 #define NORETURN 104 #ifndef __attribute__ 105 #define __attribute__(x) 106 #endif 107 #endif 108 109 #define PERF_GTK_DSO "libperf-gtk.so" 110 111 /* General helper functions */ 112 void usage(const char *err) NORETURN; 113 void die(const char *err, ...) NORETURN __attribute__((format (printf, 1, 2))); 114 int error(const char *err, ...) __attribute__((format (printf, 1, 2))); 115 void warning(const char *err, ...) __attribute__((format (printf, 1, 2))); 116 117 void set_warning_routine(void (*routine)(const char *err, va_list params)); 118 119 int prefixcmp(const char *str, const char *prefix); 120 void set_buildid_dir(const char *dir); 121 122 #ifdef __GLIBC_PREREQ 123 #if __GLIBC_PREREQ(2, 1) 124 #define HAVE_STRCHRNUL 125 #endif 126 #endif 127 128 #ifndef HAVE_STRCHRNUL 129 #define strchrnul gitstrchrnul 130 static inline char *gitstrchrnul(const char *s, int c) 131 { 132 while (*s && *s != c) 133 s++; 134 return (char *)s; 135 } 136 #endif 137 138 static inline void *zalloc(size_t size) 139 { 140 return calloc(1, size); 141 } 142 143 #define zfree(ptr) ({ free(*ptr); *ptr = NULL; }) 144 145 /* Sane ctype - no locale, and works with signed chars */ 146 #undef isascii 147 #undef isspace 148 #undef isdigit 149 #undef isxdigit 150 #undef isalpha 151 #undef isprint 152 #undef isalnum 153 #undef islower 154 #undef isupper 155 #undef tolower 156 #undef toupper 157 158 extern unsigned char sane_ctype[256]; 159 #define GIT_SPACE 0x01 160 #define GIT_DIGIT 0x02 161 #define GIT_ALPHA 0x04 162 #define GIT_GLOB_SPECIAL 0x08 163 #define GIT_REGEX_SPECIAL 0x10 164 #define GIT_PRINT_EXTRA 0x20 165 #define GIT_PRINT 0x3E 166 #define sane_istest(x,mask) ((sane_ctype[(unsigned char)(x)] & (mask)) != 0) 167 #define isascii(x) (((x) & ~0x7f) == 0) 168 #define isspace(x) sane_istest(x,GIT_SPACE) 169 #define isdigit(x) sane_istest(x,GIT_DIGIT) 170 #define isxdigit(x) \ 171 (sane_istest(toupper(x), GIT_ALPHA | GIT_DIGIT) && toupper(x) < 'G') 172 #define isalpha(x) sane_istest(x,GIT_ALPHA) 173 #define isalnum(x) sane_istest(x,GIT_ALPHA | GIT_DIGIT) 174 #define isprint(x) sane_istest(x,GIT_PRINT) 175 #define islower(x) (sane_istest(x,GIT_ALPHA) && (x & 0x20)) 176 #define isupper(x) (sane_istest(x,GIT_ALPHA) && !(x & 0x20)) 177 #define tolower(x) sane_case((unsigned char)(x), 0x20) 178 #define toupper(x) sane_case((unsigned char)(x), 0) 179 180 static inline int sane_case(int x, int high) 181 { 182 if (sane_istest(x, GIT_ALPHA)) 183 x = (x & ~0x20) | high; 184 return x; 185 } 186 187 int mkdir_p(char *path, mode_t mode); 188 int rm_rf(const char *path); 189 struct strlist *lsdir(const char *name, bool (*filter)(const char *, struct dirent *)); 190 bool lsdir_no_dot_filter(const char *name, struct dirent *d); 191 int copyfile(const char *from, const char *to); 192 int copyfile_mode(const char *from, const char *to, mode_t mode); 193 int copyfile_offset(int fromfd, loff_t from_ofs, int tofd, loff_t to_ofs, u64 size); 194 195 s64 perf_atoll(const char *str); 196 char **argv_split(const char *str, int *argcp); 197 void argv_free(char **argv); 198 bool strglobmatch(const char *str, const char *pat); 199 bool strglobmatch_nocase(const char *str, const char *pat); 200 bool strlazymatch(const char *str, const char *pat); 201 static inline bool strisglob(const char *str) 202 { 203 return strpbrk(str, "*?[") != NULL; 204 } 205 int strtailcmp(const char *s1, const char *s2); 206 char *strxfrchar(char *s, char from, char to); 207 unsigned long convert_unit(unsigned long value, char *unit); 208 ssize_t readn(int fd, void *buf, size_t n); 209 ssize_t writen(int fd, void *buf, size_t n); 210 211 struct perf_event_attr; 212 213 void event_attr_init(struct perf_event_attr *attr); 214 215 #define _STR(x) #x 216 #define STR(x) _STR(x) 217 218 size_t hex_width(u64 v); 219 int hex2u64(const char *ptr, u64 *val); 220 221 char *ltrim(char *s); 222 char *rtrim(char *s); 223 224 static inline char *trim(char *s) 225 { 226 return ltrim(rtrim(s)); 227 } 228 229 void dump_stack(void); 230 void sighandler_dump_stack(int sig); 231 232 extern unsigned int page_size; 233 extern int cacheline_size; 234 extern int sysctl_perf_event_max_stack; 235 extern int sysctl_perf_event_max_contexts_per_stack; 236 237 struct parse_tag { 238 char tag; 239 int mult; 240 }; 241 242 unsigned long parse_tag_value(const char *str, struct parse_tag *tags); 243 244 #define SRCLINE_UNKNOWN ((char *) "??:0") 245 246 static inline int path__join(char *bf, size_t size, 247 const char *path1, const char *path2) 248 { 249 return scnprintf(bf, size, "%s%s%s", path1, path1[0] ? "/" : "", path2); 250 } 251 252 static inline int path__join3(char *bf, size_t size, 253 const char *path1, const char *path2, 254 const char *path3) 255 { 256 return scnprintf(bf, size, "%s%s%s%s%s", 257 path1, path1[0] ? "/" : "", 258 path2, path2[0] ? "/" : "", path3); 259 } 260 261 struct dso; 262 struct symbol; 263 264 extern bool srcline_full_filename; 265 char *get_srcline(struct dso *dso, u64 addr, struct symbol *sym, 266 bool show_sym, bool show_addr); 267 char *__get_srcline(struct dso *dso, u64 addr, struct symbol *sym, 268 bool show_sym, bool show_addr, bool unwind_inlines); 269 void free_srcline(char *srcline); 270 271 int perf_event_paranoid(void); 272 273 void mem_bswap_64(void *src, int byte_size); 274 void mem_bswap_32(void *src, int byte_size); 275 276 const char *get_filename_for_perf_kvm(void); 277 bool find_process(const char *name); 278 279 #ifdef HAVE_ZLIB_SUPPORT 280 int gzip_decompress_to_file(const char *input, int output_fd); 281 #endif 282 283 #ifdef HAVE_LZMA_SUPPORT 284 int lzma_decompress_to_file(const char *input, int output_fd); 285 #endif 286 287 char *asprintf_expr_inout_ints(const char *var, bool in, size_t nints, int *ints); 288 289 static inline char *asprintf_expr_in_ints(const char *var, size_t nints, int *ints) 290 { 291 return asprintf_expr_inout_ints(var, true, nints, ints); 292 } 293 294 static inline char *asprintf_expr_not_in_ints(const char *var, size_t nints, int *ints) 295 { 296 return asprintf_expr_inout_ints(var, false, nints, ints); 297 } 298 299 int get_stack_size(const char *str, unsigned long *_size); 300 301 int fetch_kernel_version(unsigned int *puint, 302 char *str, size_t str_sz); 303 #define KVER_VERSION(x) (((x) >> 16) & 0xff) 304 #define KVER_PATCHLEVEL(x) (((x) >> 8) & 0xff) 305 #define KVER_SUBLEVEL(x) ((x) & 0xff) 306 #define KVER_FMT "%d.%d.%d" 307 #define KVER_PARAM(x) KVER_VERSION(x), KVER_PATCHLEVEL(x), KVER_SUBLEVEL(x) 308 309 const char *perf_tip(const char *dirpath); 310 bool is_regular_file(const char *file); 311 int fetch_current_timestamp(char *buf, size_t sz); 312 313 enum binary_printer_ops { 314 BINARY_PRINT_DATA_BEGIN, 315 BINARY_PRINT_LINE_BEGIN, 316 BINARY_PRINT_ADDR, 317 BINARY_PRINT_NUM_DATA, 318 BINARY_PRINT_NUM_PAD, 319 BINARY_PRINT_SEP, 320 BINARY_PRINT_CHAR_DATA, 321 BINARY_PRINT_CHAR_PAD, 322 BINARY_PRINT_LINE_END, 323 BINARY_PRINT_DATA_END, 324 }; 325 326 typedef void (*print_binary_t)(enum binary_printer_ops, 327 unsigned int val, 328 void *extra); 329 330 void print_binary(unsigned char *data, size_t len, 331 size_t bytes_per_line, print_binary_t printer, 332 void *extra); 333 334 #ifndef HAVE_SCHED_GETCPU_SUPPORT 335 int sched_getcpu(void); 336 #endif 337 338 int is_printable_array(char *p, unsigned int len); 339 340 int timestamp__scnprintf_usec(u64 timestamp, char *buf, size_t sz); 341 342 int unit_number__scnprintf(char *buf, size_t size, u64 n); 343 344 struct inline_list { 345 char *filename; 346 char *funcname; 347 unsigned int line_nr; 348 struct list_head list; 349 }; 350 351 struct inline_node { 352 u64 addr; 353 struct list_head val; 354 }; 355 356 struct inline_node *dso__parse_addr_inlines(struct dso *dso, u64 addr); 357 void inline_node__delete(struct inline_node *node); 358 359 #endif /* GIT_COMPAT_UTIL_H */ 360