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 #define HAS_BOOL 43 44 #include <unistd.h> 45 #include <stdio.h> 46 #include <sys/stat.h> 47 #include <sys/statfs.h> 48 #include <fcntl.h> 49 #include <stdbool.h> 50 #include <stddef.h> 51 #include <stdlib.h> 52 #include <stdarg.h> 53 #include <string.h> 54 #include <errno.h> 55 #include <limits.h> 56 #include <sys/param.h> 57 #include <sys/types.h> 58 #include <dirent.h> 59 #include <sys/time.h> 60 #include <time.h> 61 #include <signal.h> 62 #include <fnmatch.h> 63 #include <assert.h> 64 #include <regex.h> 65 #include <utime.h> 66 #include <sys/wait.h> 67 #include <sys/poll.h> 68 #include <sys/socket.h> 69 #include <sys/ioctl.h> 70 #include <inttypes.h> 71 #include <linux/magic.h> 72 #include "types.h" 73 #include <sys/ttydefaults.h> 74 #include <lk/debugfs.h> 75 #include <termios.h> 76 77 extern const char *graph_line; 78 extern const char *graph_dotted_line; 79 extern char buildid_dir[]; 80 extern char tracing_events_path[]; 81 extern void perf_debugfs_set_path(const char *mountpoint); 82 const char *perf_debugfs_mount(const char *mountpoint); 83 const char *find_tracing_dir(void); 84 char *get_tracing_file(const char *name); 85 void put_tracing_file(char *file); 86 87 /* On most systems <limits.h> would have given us this, but 88 * not on some systems (e.g. GNU/Hurd). 89 */ 90 #ifndef PATH_MAX 91 #define PATH_MAX 4096 92 #endif 93 94 #ifndef PRIuMAX 95 #define PRIuMAX "llu" 96 #endif 97 98 #ifndef PRIu32 99 #define PRIu32 "u" 100 #endif 101 102 #ifndef PRIx32 103 #define PRIx32 "x" 104 #endif 105 106 #ifndef PATH_SEP 107 #define PATH_SEP ':' 108 #endif 109 110 #ifndef STRIP_EXTENSION 111 #define STRIP_EXTENSION "" 112 #endif 113 114 #ifndef has_dos_drive_prefix 115 #define has_dos_drive_prefix(path) 0 116 #endif 117 118 #ifndef is_dir_sep 119 #define is_dir_sep(c) ((c) == '/') 120 #endif 121 122 #ifdef __GNUC__ 123 #define NORETURN __attribute__((__noreturn__)) 124 #else 125 #define NORETURN 126 #ifndef __attribute__ 127 #define __attribute__(x) 128 #endif 129 #endif 130 131 #define PERF_GTK_DSO "libperf-gtk.so" 132 133 /* General helper functions */ 134 extern void usage(const char *err) NORETURN; 135 extern void die(const char *err, ...) NORETURN __attribute__((format (printf, 1, 2))); 136 extern int error(const char *err, ...) __attribute__((format (printf, 1, 2))); 137 extern void warning(const char *err, ...) __attribute__((format (printf, 1, 2))); 138 139 #include "../../../include/linux/stringify.h" 140 141 #define DIE_IF(cnd) \ 142 do { if (cnd) \ 143 die(" at (" __FILE__ ":" __stringify(__LINE__) "): " \ 144 __stringify(cnd) "\n"); \ 145 } while (0) 146 147 148 extern void set_die_routine(void (*routine)(const char *err, va_list params) NORETURN); 149 150 extern int prefixcmp(const char *str, const char *prefix); 151 extern void set_buildid_dir(void); 152 extern void disable_buildid_cache(void); 153 154 static inline const char *skip_prefix(const char *str, const char *prefix) 155 { 156 size_t len = strlen(prefix); 157 return strncmp(str, prefix, len) ? NULL : str + len; 158 } 159 160 #ifdef __GLIBC_PREREQ 161 #if __GLIBC_PREREQ(2, 1) 162 #define HAVE_STRCHRNUL 163 #endif 164 #endif 165 166 #ifndef HAVE_STRCHRNUL 167 #define strchrnul gitstrchrnul 168 static inline char *gitstrchrnul(const char *s, int c) 169 { 170 while (*s && *s != c) 171 s++; 172 return (char *)s; 173 } 174 #endif 175 176 /* 177 * Wrappers: 178 */ 179 extern char *xstrdup(const char *str); 180 extern void *xrealloc(void *ptr, size_t size) __attribute__((weak)); 181 182 183 static inline void *zalloc(size_t size) 184 { 185 return calloc(1, size); 186 } 187 188 static inline int has_extension(const char *filename, const char *ext) 189 { 190 size_t len = strlen(filename); 191 size_t extlen = strlen(ext); 192 193 return len > extlen && !memcmp(filename + len - extlen, ext, extlen); 194 } 195 196 /* Sane ctype - no locale, and works with signed chars */ 197 #undef isascii 198 #undef isspace 199 #undef isdigit 200 #undef isxdigit 201 #undef isalpha 202 #undef isprint 203 #undef isalnum 204 #undef islower 205 #undef isupper 206 #undef tolower 207 #undef toupper 208 209 #ifndef NSEC_PER_MSEC 210 #define NSEC_PER_MSEC 1000000L 211 #endif 212 213 int parse_nsec_time(const char *str, u64 *ptime); 214 215 extern unsigned char sane_ctype[256]; 216 #define GIT_SPACE 0x01 217 #define GIT_DIGIT 0x02 218 #define GIT_ALPHA 0x04 219 #define GIT_GLOB_SPECIAL 0x08 220 #define GIT_REGEX_SPECIAL 0x10 221 #define GIT_PRINT_EXTRA 0x20 222 #define GIT_PRINT 0x3E 223 #define sane_istest(x,mask) ((sane_ctype[(unsigned char)(x)] & (mask)) != 0) 224 #define isascii(x) (((x) & ~0x7f) == 0) 225 #define isspace(x) sane_istest(x,GIT_SPACE) 226 #define isdigit(x) sane_istest(x,GIT_DIGIT) 227 #define isxdigit(x) \ 228 (sane_istest(toupper(x), GIT_ALPHA | GIT_DIGIT) && toupper(x) < 'G') 229 #define isalpha(x) sane_istest(x,GIT_ALPHA) 230 #define isalnum(x) sane_istest(x,GIT_ALPHA | GIT_DIGIT) 231 #define isprint(x) sane_istest(x,GIT_PRINT) 232 #define islower(x) (sane_istest(x,GIT_ALPHA) && (x & 0x20)) 233 #define isupper(x) (sane_istest(x,GIT_ALPHA) && !(x & 0x20)) 234 #define tolower(x) sane_case((unsigned char)(x), 0x20) 235 #define toupper(x) sane_case((unsigned char)(x), 0) 236 237 static inline int sane_case(int x, int high) 238 { 239 if (sane_istest(x, GIT_ALPHA)) 240 x = (x & ~0x20) | high; 241 return x; 242 } 243 244 int mkdir_p(char *path, mode_t mode); 245 int copyfile(const char *from, const char *to); 246 int copyfile_mode(const char *from, const char *to, mode_t mode); 247 248 s64 perf_atoll(const char *str); 249 char **argv_split(const char *str, int *argcp); 250 void argv_free(char **argv); 251 bool strglobmatch(const char *str, const char *pat); 252 bool strlazymatch(const char *str, const char *pat); 253 int strtailcmp(const char *s1, const char *s2); 254 char *strxfrchar(char *s, char from, char to); 255 unsigned long convert_unit(unsigned long value, char *unit); 256 int readn(int fd, void *buf, size_t size); 257 258 struct perf_event_attr; 259 260 void event_attr_init(struct perf_event_attr *attr); 261 262 #define _STR(x) #x 263 #define STR(x) _STR(x) 264 265 /* 266 * Determine whether some value is a power of two, where zero is 267 * *not* considered a power of two. 268 */ 269 270 static inline __attribute__((const)) 271 bool is_power_of_2(unsigned long n) 272 { 273 return (n != 0 && ((n & (n - 1)) == 0)); 274 } 275 276 static inline unsigned next_pow2(unsigned x) 277 { 278 if (!x) 279 return 1; 280 return 1ULL << (32 - __builtin_clz(x - 1)); 281 } 282 283 size_t hex_width(u64 v); 284 int hex2u64(const char *ptr, u64 *val); 285 286 char *ltrim(char *s); 287 char *rtrim(char *s); 288 289 void dump_stack(void); 290 291 extern unsigned int page_size; 292 293 void get_term_dimensions(struct winsize *ws); 294 295 struct parse_tag { 296 char tag; 297 int mult; 298 }; 299 300 unsigned long parse_tag_value(const char *str, struct parse_tag *tags); 301 302 #define SRCLINE_UNKNOWN ((char *) "??:0") 303 304 struct dso; 305 306 char *get_srcline(struct dso *dso, unsigned long addr); 307 void free_srcline(char *srcline); 308 309 int filename__read_int(const char *filename, int *value); 310 #endif /* GIT_COMPAT_UTIL_H */ 311