LXR linux/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 <inttypes.h>
  78#include "../../../include/linux/magic.h"
  79#include "types.h"
  80#include <sys/ttydefaults.h>
  81
  82extern const char *graph_line;
  83extern const char *graph_dotted_line;
  84extern char buildid_dir[];
  85
  86/* On most systems <limits.h> would have given us this, but
  87 * not on some systems (e.g. GNU/Hurd).
  88 */
  89#ifndef PATH_MAX
  90#define PATH_MAX 4096
  91#endif
  92
  93#ifndef PRIuMAX
  94#define PRIuMAX "llu"
  95#endif
  96
  97#ifndef PRIu32
  98#define PRIu32 "u"
  99#endif
 100
 101#ifndef PRIx32
 102#define PRIx32 "x"
 103#endif
 104
 105#ifndef PATH_SEP
 106#define PATH_SEP ':'
 107#endif
 108
 109#ifndef STRIP_EXTENSION
 110#define STRIP_EXTENSION ""
 111#endif
 112
 113#ifndef has_dos_drive_prefix
 114#define has_dos_drive_prefix(path) 0
 115#endif
 116
 117#ifndef is_dir_sep
 118#define is_dir_sep(c) ((c) == '/')
 119#endif
 120
 121#ifdef __GNUC__
 122#define NORETURN __attribute__((__noreturn__))
 123#else
 124#define NORETURN
 125#ifndef __attribute__
 126#define __attribute__(x)
 127#endif
 128#endif
 129
 130/* General helper functions */
 131extern void usage(const char *err) NORETURN;
 132extern void die(const char *err, ...) NORETURN __attribute__((format (printf, 1, 2)));
 133extern int error(const char *err, ...) __attribute__((format (printf, 1, 2)));
 134extern void warning(const char *err, ...) __attribute__((format (printf, 1, 2)));
 135
 136#include "../../../include/linux/stringify.h"
 137
 138#define DIE_IF(cnd)     \
 139        do { if (cnd)   \
 140                die(" at (" __FILE__ ":" __stringify(__LINE__) "): "    \
 141                    __stringify(cnd) "\n");                             \
 142        } while (0)
 143
 144
 145extern void set_die_routine(void (*routine)(const char *err, va_list params) NORETURN);
 146
 147extern int prefixcmp(const char *str, const char *prefix);
 148extern void set_buildid_dir(void);
 149extern void disable_buildid_cache(void);
 150
 151static inline const char *skip_prefix(const char *str, const char *prefix)
 152{
 153        size_t len = strlen(prefix);
 154        return strncmp(str, prefix, len) ? NULL : str + len;
 155}
 156
 157#ifdef __GLIBC_PREREQ
 158#if __GLIBC_PREREQ(2, 1)
 159#define HAVE_STRCHRNUL
 160#endif
 161#endif
 162
 163#ifndef HAVE_STRCHRNUL
 164#define strchrnul gitstrchrnul
 165static inline char *gitstrchrnul(const char *s, int c)
 166{
 167        while (*s && *s != c)
 168                s++;
 169        return (char *)s;
 170}
 171#endif
 172
 173/*
 174 * Wrappers:
 175 */
 176extern char *xstrdup(const char *str);
 177extern void *xrealloc(void *ptr, size_t size) __attribute__((weak));
 178
 179
 180static inline void *zalloc(size_t size)
 181{
 182        return calloc(1, size);
 183}
 184
 185static inline int has_extension(const char *filename, const char *ext)
 186{
 187        size_t len = strlen(filename);
 188        size_t extlen = strlen(ext);
 189
 190        return len > extlen && !memcmp(filename + len - extlen, ext, extlen);
 191}
 192
 193/* Sane ctype - no locale, and works with signed chars */
 194#undef isascii
 195#undef isspace
 196#undef isdigit
 197#undef isxdigit
 198#undef isalpha
 199#undef isprint
 200#undef isalnum
 201#undef islower
 202#undef isupper
 203#undef tolower
 204#undef toupper
 205
 206extern unsigned char sane_ctype[256];
 207#define GIT_SPACE               0x01
 208#define GIT_DIGIT               0x02
 209#define GIT_ALPHA               0x04
 210#define GIT_GLOB_SPECIAL        0x08
 211#define GIT_REGEX_SPECIAL       0x10
 212#define GIT_PRINT_EXTRA         0x20
 213#define GIT_PRINT               0x3E
 214#define sane_istest(x,mask) ((sane_ctype[(unsigned char)(x)] & (mask)) != 0)
 215#define isascii(x) (((x) & ~0x7f) == 0)
 216#define isspace(x) sane_istest(x,GIT_SPACE)
 217#define isdigit(x) sane_istest(x,GIT_DIGIT)
 218#define isxdigit(x)     \
 219        (sane_istest(toupper(x), GIT_ALPHA | GIT_DIGIT) && toupper(x) < 'G')
 220#define isalpha(x) sane_istest(x,GIT_ALPHA)
 221#define isalnum(x) sane_istest(x,GIT_ALPHA | GIT_DIGIT)
 222#define isprint(x) sane_istest(x,GIT_PRINT)
 223#define islower(x) (sane_istest(x,GIT_ALPHA) && sane_istest(x,0x20))
 224#define isupper(x) (sane_istest(x,GIT_ALPHA) && !sane_istest(x,0x20))
 225#define tolower(x) sane_case((unsigned char)(x), 0x20)
 226#define toupper(x) sane_case((unsigned char)(x), 0)
 227
 228static inline int sane_case(int x, int high)
 229{
 230        if (sane_istest(x, GIT_ALPHA))
 231                x = (x & ~0x20) | high;
 232        return x;
 233}
 234
 235int mkdir_p(char *path, mode_t mode);
 236int copyfile(const char *from, const char *to);
 237
 238s64 perf_atoll(const char *str);
 239char **argv_split(const char *str, int *argcp);
 240void argv_free(char **argv);
 241bool strglobmatch(const char *str, const char *pat);
 242bool strlazymatch(const char *str, const char *pat);
 243int strtailcmp(const char *s1, const char *s2);
 244unsigned long convert_unit(unsigned long value, char *unit);
 245int readn(int fd, void *buf, size_t size);
 246
 247struct perf_event_attr;
 248
 249void event_attr_init(struct perf_event_attr *attr);
 250
 251#define _STR(x) #x
 252#define STR(x) _STR(x)
 253
 254/*
 255 *  Determine whether some value is a power of two, where zero is
 256 * *not* considered a power of two.
 257 */
 258
 259static inline __attribute__((const))
 260bool is_power_of_2(unsigned long n)
 261{
 262        return (n != 0 && ((n & (n - 1)) == 0));
 263}
 264
 265size_t hex_width(u64 v);
 266
 267#endif
 268