tools/perf/util/util.h

   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/magic.h>
  76 #include <linux/types.h>
  77 #include <sys/ttydefaults.h>
  78 #include <api/fs/tracing_path.h>
  79 #include <termios.h>
  80 #include <linux/bitops.h>
  81 #include <termios.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 /*
 163  * Wrappers:
 164  */
 165 void *xrealloc(void *ptr, size_t size) __attribute__((weak));
 166
 167
 168 static inline void *zalloc(size_t size)
 169 {
 170         return calloc(1, size);
 171 }
 172
 173 #define zfree(ptr) ({ free(*ptr); *ptr = NULL; })
 174
 175 /* Sane ctype - no locale, and works with signed chars */
 176 #undef isascii
 177 #undef isspace
 178 #undef isdigit
 179 #undef isxdigit
 180 #undef isalpha
 181 #undef isprint
 182 #undef isalnum
 183 #undef islower
 184 #undef isupper
 185 #undef tolower
 186 #undef toupper
 187
 188 #ifndef NSEC_PER_MSEC
 189 #define NSEC_PER_MSEC   1000000L
 190 #endif
 191
 192 int parse_nsec_time(const char *str, u64 *ptime);
 193
 194 extern unsigned char sane_ctype[256];
 195 #define GIT_SPACE               0x01
 196 #define GIT_DIGIT               0x02
 197 #define GIT_ALPHA               0x04
 198 #define GIT_GLOB_SPECIAL        0x08
 199 #define GIT_REGEX_SPECIAL       0x10
 200 #define GIT_PRINT_EXTRA         0x20
 201 #define GIT_PRINT               0x3E
 202 #define sane_istest(x,mask) ((sane_ctype[(unsigned char)(x)] & (mask)) != 0)
 203 #define isascii(x) (((x) & ~0x7f) == 0)
 204 #define isspace(x) sane_istest(x,GIT_SPACE)
 205 #define isdigit(x) sane_istest(x,GIT_DIGIT)
 206 #define isxdigit(x)     \
 207         (sane_istest(toupper(x), GIT_ALPHA | GIT_DIGIT) && toupper(x) < 'G')
 208 #define isalpha(x) sane_istest(x,GIT_ALPHA)
 209 #define isalnum(x) sane_istest(x,GIT_ALPHA | GIT_DIGIT)
 210 #define isprint(x) sane_istest(x,GIT_PRINT)
 211 #define islower(x) (sane_istest(x,GIT_ALPHA) && (x & 0x20))
 212 #define isupper(x) (sane_istest(x,GIT_ALPHA) && !(x & 0x20))
 213 #define tolower(x) sane_case((unsigned char)(x), 0x20)
 214 #define toupper(x) sane_case((unsigned char)(x), 0)
 215
 216 static inline int sane_case(int x, int high)
 217 {
 218         if (sane_istest(x, GIT_ALPHA))
 219                 x = (x & ~0x20) | high;
 220         return x;
 221 }
 222
 223 int mkdir_p(char *path, mode_t mode);
 224 int rm_rf(char *path);
 225 int copyfile(const char *from, const char *to);
 226 int copyfile_mode(const char *from, const char *to, mode_t mode);
 227 int copyfile_offset(int fromfd, loff_t from_ofs, int tofd, loff_t to_ofs, u64 size);
 228
 229 s64 perf_atoll(const char *str);
 230 char **argv_split(const char *str, int *argcp);
 231 void argv_free(char **argv);
 232 bool strglobmatch(const char *str, const char *pat);
 233 bool strlazymatch(const char *str, const char *pat);
 234 static inline bool strisglob(const char *str)
 235 {
 236         return strpbrk(str, "*?[") != NULL;
 237 }
 238 int strtailcmp(const char *s1, const char *s2);
 239 char *strxfrchar(char *s, char from, char to);
 240 unsigned long convert_unit(unsigned long value, char *unit);
 241 ssize_t readn(int fd, void *buf, size_t n);
 242 ssize_t writen(int fd, void *buf, size_t n);
 243
 244 struct perf_event_attr;
 245
 246 void event_attr_init(struct perf_event_attr *attr);
 247
 248 #define _STR(x) #x
 249 #define STR(x) _STR(x)
 250
 251 size_t hex_width(u64 v);
 252 int hex2u64(const char *ptr, u64 *val);
 253
 254 char *ltrim(char *s);
 255 char *rtrim(char *s);
 256
 257 void dump_stack(void);
 258 void sighandler_dump_stack(int sig);
 259
 260 extern unsigned int page_size;
 261 extern int cacheline_size;
 262
 263 struct parse_tag {
 264         char tag;
 265         int mult;
 266 };
 267
 268 unsigned long parse_tag_value(const char *str, struct parse_tag *tags);
 269
 270 #define SRCLINE_UNKNOWN  ((char *) "??:0")
 271
 272 static inline int path__join(char *bf, size_t size,
 273                              const char *path1, const char *path2)
 274 {
 275         return scnprintf(bf, size, "%s%s%s", path1, path1[0] ? "/" : "", path2);
 276 }
 277
 278 static inline int path__join3(char *bf, size_t size,
 279                               const char *path1, const char *path2,
 280                               const char *path3)
 281 {
 282         return scnprintf(bf, size, "%s%s%s%s%s",
 283                          path1, path1[0] ? "/" : "",
 284                          path2, path2[0] ? "/" : "", path3);
 285 }
 286
 287 struct dso;
 288 struct symbol;
 289
 290 extern bool srcline_full_filename;
 291 char *get_srcline(struct dso *dso, u64 addr, struct symbol *sym,
 292                   bool show_sym);
 293 char *__get_srcline(struct dso *dso, u64 addr, struct symbol *sym,
 294                   bool show_sym, bool unwind_inlines);
 295 void free_srcline(char *srcline);
 296
 297 int perf_event_paranoid(void);
 298
 299 void mem_bswap_64(void *src, int byte_size);
 300 void mem_bswap_32(void *src, int byte_size);
 301
 302 const char *get_filename_for_perf_kvm(void);
 303 bool find_process(const char *name);
 304
 305 #ifdef HAVE_ZLIB_SUPPORT
 306 int gzip_decompress_to_file(const char *input, int output_fd);
 307 #endif
 308
 309 #ifdef HAVE_LZMA_SUPPORT
 310 int lzma_decompress_to_file(const char *input, int output_fd);
 311 #endif
 312
 313 char *asprintf_expr_inout_ints(const char *var, bool in, size_t nints, int *ints);
 314
 315 static inline char *asprintf_expr_in_ints(const char *var, size_t nints, int *ints)
 316 {
 317         return asprintf_expr_inout_ints(var, true, nints, ints);
 318 }
 319
 320 static inline char *asprintf_expr_not_in_ints(const char *var, size_t nints, int *ints)
 321 {
 322         return asprintf_expr_inout_ints(var, false, nints, ints);
 323 }
 324
 325 int get_stack_size(const char *str, unsigned long *_size);
 326
 327 int fetch_kernel_version(unsigned int *puint,
 328                          char *str, size_t str_sz);
 329 #define KVER_VERSION(x)         (((x) >> 16) & 0xff)
 330 #define KVER_PATCHLEVEL(x)      (((x) >> 8) & 0xff)
 331 #define KVER_SUBLEVEL(x)        ((x) & 0xff)
 332 #define KVER_FMT        "%d.%d.%d"
 333 #define KVER_PARAM(x)   KVER_VERSION(x), KVER_PATCHLEVEL(x), KVER_SUBLEVEL(x)
 334
 335 const char *perf_tip(const char *dirpath);
 336 bool is_regular_file(const char *file);
 337 int fetch_current_timestamp(char *buf, size_t sz);
 338
 339 enum binary_printer_ops {
 340         BINARY_PRINT_DATA_BEGIN,
 341         BINARY_PRINT_LINE_BEGIN,
 342         BINARY_PRINT_ADDR,
 343         BINARY_PRINT_NUM_DATA,
 344         BINARY_PRINT_NUM_PAD,
 345         BINARY_PRINT_SEP,
 346         BINARY_PRINT_CHAR_DATA,
 347         BINARY_PRINT_CHAR_PAD,
 348         BINARY_PRINT_LINE_END,
 349         BINARY_PRINT_DATA_END,
 350 };
 351
 352 typedef void (*print_binary_t)(enum binary_printer_ops,
 353                                unsigned int val,
 354                                void *extra);
 355
 356 void print_binary(unsigned char *data, size_t len,
 357                   size_t bytes_per_line, print_binary_t printer,
 358                   void *extra);
 359 #endif /* GIT_COMPAT_UTIL_H */