LXR linux/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#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
  77extern const char *graph_line;
  78extern const char *graph_dotted_line;
  79extern char buildid_dir[];
  80extern char tracing_events_path[];
  81extern void perf_debugfs_set_path(const char *mountpoint);
  82const char *perf_debugfs_mount(const char *mountpoint);
  83
  84/* On most systems <limits.h> would have given us this, but
  85 * not on some systems (e.g. GNU/Hurd).
  86 */
  87#ifndef PATH_MAX
  88#define PATH_MAX 4096
  89#endif
  90
  91#ifndef PRIuMAX
  92#define PRIuMAX "llu"
  93#endif
  94
  95#ifndef PRIu32
  96#define PRIu32 "u"
  97#endif
  98
  99#ifndef PRIx32
 100#define PRIx32 "x"
 101#endif
 102
 103#ifndef PATH_SEP
 104#define PATH_SEP ':'
 105#endif
 106
 107#ifndef STRIP_EXTENSION
 108#define STRIP_EXTENSION ""
 109#endif
 110
 111#ifndef has_dos_drive_prefix
 112#define has_dos_drive_prefix(path) 0
 113#endif
 114
 115#ifndef is_dir_sep
 116#define is_dir_sep(c) ((c) == '/')
 117#endif
 118
 119#ifdef __GNUC__
 120#define NORETURN __attribute__((__noreturn__))
 121#else
 122#define NORETURN
 123#ifndef __attribute__
 124#define __attribute__(x)
 125#endif
 126#endif
 127
 128/* General helper functions */
 129extern void usage(const char *err) NORETURN;
 130extern void die(const char *err, ...) NORETURN __attribute__((format (printf, 1, 2)));
 131extern int error(const char *err, ...) __attribute__((format (printf, 1, 2)));
 132extern void warning(const char *err, ...) __attribute__((format (printf, 1, 2)));
 133
 134#include "../../../include/linux/stringify.h"
 135
 136#define DIE_IF(cnd)     \
 137        do { if (cnd)   \
 138                die(" at (" __FILE__ ":" __stringify(__LINE__) "): "    \
 139                    __stringify(cnd) "\n");                             \
 140        } while (0)
 141
 142
 143extern void set_die_routine(void (*routine)(const char *err, va_list params) NORETURN);
 144
 145extern int prefixcmp(const char *str, const char *prefix);
 146extern void set_buildid_dir(void);
 147extern void disable_buildid_cache(void);
 148
 149static inline const char *skip_prefix(const char *str, const char *prefix)
 150{
 151        size_t len = strlen(prefix);
 152        return strncmp(str, prefix, len) ? NULL : str + len;
 153}
 154
 155#ifdef __GLIBC_PREREQ
 156#if __GLIBC_PREREQ(2, 1)
 157#define HAVE_STRCHRNUL
 158#endif
 159#endif
 160
 161#ifndef HAVE_STRCHRNUL
 162#define strchrnul gitstrchrnul
 163static inline char *gitstrchrnul(const char *s, int c)
 164{
 165        while (*s && *s != c)
 166                s++;
 167        return (char *)s;
 168}
 169#endif
 170
 171/*
 172 * Wrappers:
 173 */
 174extern char *xstrdup(const char *str);
 175extern void *xrealloc(void *ptr, size_t size) __attribute__((weak));
 176
 177
 178static inline void *zalloc(size_t size)
 179{
 180        return calloc(1, size);
 181}
 182
 183static inline int has_extension(const char *filename, const char *ext)
 184{
 185        size_t len = strlen(filename);
 186        size_t extlen = strlen(ext);
 187
 188        return len > extlen && !memcmp(filename + len - extlen, ext, extlen);
 189}
 190
 191/* Sane ctype - no locale, and works with signed chars */
 192#undef isascii
 193#undef isspace
 194#undef isdigit
 195#undef isxdigit
 196#undef isalpha
 197#undef isprint
 198#undef isalnum
 199#undef islower
 200#undef isupper
 201#undef tolower
 202#undef toupper
 203
 204#ifndef NSEC_PER_MSEC
 205#define NSEC_PER_MSEC   1000000L
 206#endif
 207
 208extern unsigned char sane_ctype[256];
 209#define GIT_SPACE               0x01
 210#define GIT_DIGIT               0x02
 211#define GIT_ALPHA               0x04
 212#define GIT_GLOB_SPECIAL        0x08
 213#define GIT_REGEX_SPECIAL       0x10
 214#define GIT_PRINT_EXTRA         0x20
 215#define GIT_PRINT               0x3E
 216#define sane_istest(x,mask) ((sane_ctype[(unsigned char)(x)] & (mask)) != 0)
 217#define isascii(x) (((x) & ~0x7f) == 0)
 218#define isspace(x) sane_istest(x,GIT_SPACE)
 219#define isdigit(x) sane_istest(x,GIT_DIGIT)
 220#define isxdigit(x)     \
 221        (sane_istest(toupper(x), GIT_ALPHA | GIT_DIGIT) && toupper(x) < 'G')
 222#define isalpha(x) sane_istest(x,GIT_ALPHA)
 223#define isalnum(x) sane_istest(x,GIT_ALPHA | GIT_DIGIT)
 224#define isprint(x) sane_istest(x,GIT_PRINT)
 225#define islower(x) (sane_istest(x,GIT_ALPHA) && (x & 0x20))
 226#define isupper(x) (sane_istest(x,GIT_ALPHA) && !(x & 0x20))
 227#define tolower(x) sane_case((unsigned char)(x), 0x20)
 228#define toupper(x) sane_case((unsigned char)(x), 0)
 229
 230static inline int sane_case(int x, int high)
 231{
 232        if (sane_istest(x, GIT_ALPHA))
 233                x = (x & ~0x20) | high;
 234        return x;
 235}
 236
 237int mkdir_p(char *path, mode_t mode);
 238int copyfile(const char *from, const char *to);
 239
 240s64 perf_atoll(const char *str);
 241char **argv_split(const char *str, int *argcp);
 242void argv_free(char **argv);
 243bool strglobmatch(const char *str, const char *pat);
 244bool strlazymatch(const char *str, const char *pat);
 245int strtailcmp(const char *s1, const char *s2);
 246char *strxfrchar(char *s, char from, char to);
 247unsigned long convert_unit(unsigned long value, char *unit);
 248int readn(int fd, void *buf, size_t size);
 249
 250struct perf_event_attr;
 251
 252void event_attr_init(struct perf_event_attr *attr);
 253
 254#define _STR(x) #x
 255#define STR(x) _STR(x)
 256
 257/*
 258 *  Determine whether some value is a power of two, where zero is
 259 * *not* considered a power of two.
 260 */
 261
 262static inline __attribute__((const))
 263bool is_power_of_2(unsigned long n)
 264{
 265        return (n != 0 && ((n & (n - 1)) == 0));
 266}
 267
 268size_t hex_width(u64 v);
 269int hex2u64(const char *ptr, u64 *val);
 270
 271char *ltrim(char *s);
 272char *rtrim(char *s);
 273
 274void dump_stack(void);
 275
 276extern unsigned int page_size;
 277
 278void get_term_dimensions(struct winsize *ws);
 279#endif /* GIT_COMPAT_UTIL_H */
 280