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 <inttypes.h>
  73#include <linux/magic.h>
  74#include "types.h"
  75#include <sys/ttydefaults.h>
  76
  77extern const char *graph_line;
  78extern const char *graph_dotted_line;
  79extern char buildid_dir[];
  80
  81/* On most systems <limits.h> would have given us this, but
  82 * not on some systems (e.g. GNU/Hurd).
  83 */
  84#ifndef PATH_MAX
  85#define PATH_MAX 4096
  86#endif
  87
  88#ifndef PRIuMAX
  89#define PRIuMAX "llu"
  90#endif
  91
  92#ifndef PRIu32
  93#define PRIu32 "u"
  94#endif
  95
  96#ifndef PRIx32
  97#define PRIx32 "x"
  98#endif
  99
 100#ifndef PATH_SEP
 101#define PATH_SEP ':'
 102#endif
 103
 104#ifndef STRIP_EXTENSION
 105#define STRIP_EXTENSION ""
 106#endif
 107
 108#ifndef has_dos_drive_prefix
 109#define has_dos_drive_prefix(path) 0
 110#endif
 111
 112#ifndef is_dir_sep
 113#define is_dir_sep(c) ((c) == '/')
 114#endif
 115
 116#ifdef __GNUC__
 117#define NORETURN __attribute__((__noreturn__))
 118#else
 119#define NORETURN
 120#ifndef __attribute__
 121#define __attribute__(x)
 122#endif
 123#endif
 124
 125/* General helper functions */
 126extern void usage(const char *err) NORETURN;
 127extern void die(const char *err, ...) NORETURN __attribute__((format (printf, 1, 2)));
 128extern int error(const char *err, ...) __attribute__((format (printf, 1, 2)));
 129extern void warning(const char *err, ...) __attribute__((format (printf, 1, 2)));
 130
 131#include "../../../include/linux/stringify.h"
 132
 133#define DIE_IF(cnd)     \
 134        do { if (cnd)   \
 135                die(" at (" __FILE__ ":" __stringify(__LINE__) "): "    \
 136                    __stringify(cnd) "\n");                             \
 137        } while (0)
 138
 139
 140extern void set_die_routine(void (*routine)(const char *err, va_list params) NORETURN);
 141
 142extern int prefixcmp(const char *str, const char *prefix);
 143extern void set_buildid_dir(void);
 144extern void disable_buildid_cache(void);
 145
 146static inline const char *skip_prefix(const char *str, const char *prefix)
 147{
 148        size_t len = strlen(prefix);
 149        return strncmp(str, prefix, len) ? NULL : str + len;
 150}
 151
 152#ifdef __GLIBC_PREREQ
 153#if __GLIBC_PREREQ(2, 1)
 154#define HAVE_STRCHRNUL
 155#endif
 156#endif
 157
 158#ifndef HAVE_STRCHRNUL
 159#define strchrnul gitstrchrnul
 160static inline char *gitstrchrnul(const char *s, int c)
 161{
 162        while (*s && *s != c)
 163                s++;
 164        return (char *)s;
 165}
 166#endif
 167
 168/*
 169 * Wrappers:
 170 */
 171extern char *xstrdup(const char *str);
 172extern void *xrealloc(void *ptr, size_t size) __attribute__((weak));
 173
 174
 175static inline void *zalloc(size_t size)
 176{
 177        return calloc(1, size);
 178}
 179
 180static inline int has_extension(const char *filename, const char *ext)
 181{
 182        size_t len = strlen(filename);
 183        size_t extlen = strlen(ext);
 184
 185        return len > extlen && !memcmp(filename + len - extlen, ext, extlen);
 186}
 187
 188/* Sane ctype - no locale, and works with signed chars */
 189#undef isascii
 190#undef isspace
 191#undef isdigit
 192#undef isxdigit
 193#undef isalpha
 194#undef isprint
 195#undef isalnum
 196#undef islower
 197#undef isupper
 198#undef tolower
 199#undef toupper
 200
 201#ifndef NSEC_PER_MSEC
 202#define NSEC_PER_MSEC   1000000L
 203#endif
 204
 205extern 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 islower(x) (sane_istest(x,GIT_ALPHA) && sane_istest(x,0x20))
 223#define isupper(x) (sane_istest(x,GIT_ALPHA) && !sane_istest(x,0x20))
 224#define tolower(x) sane_case((unsigned char)(x), 0x20)
 225#define toupper(x) sane_case((unsigned char)(x), 0)
 226
 227static inline int sane_case(int x, int high)
 228{
 229        if (sane_istest(x, GIT_ALPHA))
 230                x = (x & ~0x20) | high;
 231        return x;
 232}
 233
 234int mkdir_p(char *path, mode_t mode);
 235int copyfile(const char *from, const char *to);
 236
 237s64 perf_atoll(const char *str);
 238char **argv_split(const char *str, int *argcp);
 239void argv_free(char **argv);
 240bool strglobmatch(const char *str, const char *pat);
 241bool strlazymatch(const char *str, const char *pat);
 242int strtailcmp(const char *s1, const char *s2);
 243char *strxfrchar(char *s, char from, char to);
 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);
 266int hex2u64(const char *ptr, u64 *val);
 267
 268char *ltrim(char *s);
 269char *rtrim(char *s);
 270
 271void dump_stack(void);
 272
 273extern unsigned int page_size;
 274
 275struct winsize;
 276void get_term_dimensions(struct winsize *ws);
 277
 278#endif
 279