tools/perf/util/util.h

   1 #ifndef GIT_COMPAT_UTIL_H
   2 #define GIT_COMPAT_UTIL_H
   3
   4 #define _FILE_OFFSET_BITS 64
   5
   6 #ifndef FLEX_ARRAY
   7 /*
   8  * See if our compiler is known to support flexible array members.
   9  */
  10 #if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L)
  11 # define FLEX_ARRAY /* empty */
  12 #elif defined(__GNUC__)
  13 # if (__GNUC__ >= 3)
  14 #  define FLEX_ARRAY /* empty */
  15 # else
  16 #  define FLEX_ARRAY 0 /* older GNU extension */
  17 # endif
  18 #endif
  19
  20 /*
  21  * Otherwise, default to safer but a bit wasteful traditional style
  22  */
  23 #ifndef FLEX_ARRAY
  24 # define FLEX_ARRAY 1
  25 #endif
  26 #endif
  27
  28 #define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0]))
  29
  30 #ifdef __GNUC__
  31 #define TYPEOF(x) (__typeof__(x))
  32 #else
  33 #define TYPEOF(x)
  34 #endif
  35
  36 #define MSB(x, bits) ((x) & TYPEOF(x)(~0ULL << (sizeof(x) * 8 - (bits))))
  37 #define HAS_MULTI_BITS(i)  ((i) & ((i) - 1))  /* checks if an integer has more than 1 bit set */
  38
  39 /* Approximation of the length of the decimal representation of this type. */
  40 #define decimal_length(x)       ((int)(sizeof(x) * 2.56 + 0.5) + 1)
  41
  42 #define _ALL_SOURCE 1
  43 #define _BSD_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 <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>
  68 #include <sys/wait.h>
  69 #include <sys/poll.h>
  70 #include <sys/socket.h>
  71 #include <sys/ioctl.h>
  72 #include <sys/select.h>
  73 #include <netinet/in.h>
  74 #include <netinet/tcp.h>
  75 #include <arpa/inet.h>
  76 #include <netdb.h>
  77 #include <pwd.h>
  78 #include <inttypes.h>
  79 #include "../../../include/linux/magic.h"
  80 #include "types.h"
  81 #include <sys/ttydefaults.h>
  82
  83 extern const char *graph_line;
  84 extern const char *graph_dotted_line;
  85 extern char buildid_dir[];
  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 /* General helper functions */
 132 extern void usage(const char *err) NORETURN;
 133 extern void die(const char *err, ...) NORETURN __attribute__((format (printf, 1, 2)));
 134 extern int error(const char *err, ...) __attribute__((format (printf, 1, 2)));
 135 extern void warning(const char *err, ...) __attribute__((format (printf, 1, 2)));
 136
 137 #include "../../../include/linux/stringify.h"
 138
 139 #define DIE_IF(cnd)     \
 140         do { if (cnd)   \
 141                 die(" at (" __FILE__ ":" __stringify(__LINE__) "): "    \
 142                     __stringify(cnd) "\n");                             \
 143         } while (0)
 144
 145
 146 extern void set_die_routine(void (*routine)(const char *err, va_list params) NORETURN);
 147
 148 extern int prefixcmp(const char *str, const char *prefix);
 149 extern void set_buildid_dir(void);
 150 extern void disable_buildid_cache(void);
 151
 152 static inline const char *skip_prefix(const char *str, const char *prefix)
 153 {
 154         size_t len = strlen(prefix);
 155         return strncmp(str, prefix, len) ? NULL : str + len;
 156 }
 157
 158 #ifdef __GLIBC_PREREQ
 159 #if __GLIBC_PREREQ(2, 1)
 160 #define HAVE_STRCHRNUL
 161 #endif
 162 #endif
 163
 164 #ifndef HAVE_STRCHRNUL
 165 #define strchrnul gitstrchrnul
 166 static inline char *gitstrchrnul(const char *s, int c)
 167 {
 168         while (*s && *s != c)
 169                 s++;
 170         return (char *)s;
 171 }
 172 #endif
 173
 174 /*
 175  * Wrappers:
 176  */
 177 extern char *xstrdup(const char *str);
 178 extern void *xrealloc(void *ptr, size_t size) __attribute__((weak));
 179
 180
 181 static inline void *zalloc(size_t size)
 182 {
 183         return calloc(1, size);
 184 }
 185
 186 static inline int has_extension(const char *filename, const char *ext)
 187 {
 188         size_t len = strlen(filename);
 189         size_t extlen = strlen(ext);
 190
 191         return len > extlen && !memcmp(filename + len - extlen, ext, extlen);
 192 }
 193
 194 /* Sane ctype - no locale, and works with signed chars */
 195 #undef isascii
 196 #undef isspace
 197 #undef isdigit
 198 #undef isxdigit
 199 #undef isalpha
 200 #undef isprint
 201 #undef isalnum
 202 #undef tolower
 203 #undef toupper
 204
 205 extern unsigned char sane_ctype[256];
 206 #define GIT_SPACE               0x01
 207 #define GIT_DIGIT               0x02
 208 #define GIT_ALPHA               0x04
 209 #define GIT_GLOB_SPECIAL        0x08
 210 #define GIT_REGEX_SPECIAL       0x10
 211 #define GIT_PRINT_EXTRA         0x20
 212 #define GIT_PRINT               0x3E
 213 #define sane_istest(x,mask) ((sane_ctype[(unsigned char)(x)] & (mask)) != 0)
 214 #define isascii(x) (((x) & ~0x7f) == 0)
 215 #define isspace(x) sane_istest(x,GIT_SPACE)
 216 #define isdigit(x) sane_istest(x,GIT_DIGIT)
 217 #define isxdigit(x)     \
 218         (sane_istest(toupper(x), GIT_ALPHA | GIT_DIGIT) && toupper(x) < 'G')
 219 #define isalpha(x) sane_istest(x,GIT_ALPHA)
 220 #define isalnum(x) sane_istest(x,GIT_ALPHA | GIT_DIGIT)
 221 #define isprint(x) sane_istest(x,GIT_PRINT)
 222 #define tolower(x) sane_case((unsigned char)(x), 0x20)
 223 #define toupper(x) sane_case((unsigned char)(x), 0)
 224
 225 static inline int sane_case(int x, int high)
 226 {
 227         if (sane_istest(x, GIT_ALPHA))
 228                 x = (x & ~0x20) | high;
 229         return x;
 230 }
 231
 232 int mkdir_p(char *path, mode_t mode);
 233 int copyfile(const char *from, const char *to);
 234
 235 s64 perf_atoll(const char *str);
 236 char **argv_split(const char *str, int *argcp);
 237 void argv_free(char **argv);
 238 bool strglobmatch(const char *str, const char *pat);
 239 bool strlazymatch(const char *str, const char *pat);
 240 int strtailcmp(const char *s1, const char *s2);
 241 unsigned long convert_unit(unsigned long value, char *unit);
 242 int readn(int fd, void *buf, size_t size);
 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 /*
 252  *  Determine whether some value is a power of two, where zero is
 253  * *not* considered a power of two.
 254  */
 255
 256 static inline __attribute__((const))
 257 bool is_power_of_2(unsigned long n)
 258 {
 259         return (n != 0 && ((n & (n - 1)) == 0));
 260 }
 261
 262 #endif