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Linux/tools/perf/util/util.h

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  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 
 77 extern const char *graph_line;
 78 extern const char *graph_dotted_line;
 79 extern 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 */
126 extern void usage(const char *err) NORETURN;
127 extern void die(const char *err, ...) NORETURN __attribute__((format (printf, 1, 2)));
128 extern int error(const char *err, ...) __attribute__((format (printf, 1, 2)));
129 extern 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 
140 extern void set_die_routine(void (*routine)(const char *err, va_list params) NORETURN);
141 
142 extern int prefixcmp(const char *str, const char *prefix);
143 extern void set_buildid_dir(void);
144 extern void disable_buildid_cache(void);
145 
146 static 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
160 static 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  */
171 extern char *xstrdup(const char *str);
172 extern void *xrealloc(void *ptr, size_t size) __attribute__((weak));
173 
174 
175 static inline void *zalloc(size_t size)
176 {
177         return calloc(1, size);
178 }
179 
180 static 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 
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 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 
227 static 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 
234 int mkdir_p(char *path, mode_t mode);
235 int copyfile(const char *from, const char *to);
236 
237 s64 perf_atoll(const char *str);
238 char **argv_split(const char *str, int *argcp);
239 void argv_free(char **argv);
240 bool strglobmatch(const char *str, const char *pat);
241 bool strlazymatch(const char *str, const char *pat);
242 int strtailcmp(const char *s1, const char *s2);
243 char *strxfrchar(char *s, char from, char to);
244 unsigned long convert_unit(unsigned long value, char *unit);
245 int readn(int fd, void *buf, size_t size);
246 
247 struct perf_event_attr;
248 
249 void 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 
259 static inline __attribute__((const))
260 bool is_power_of_2(unsigned long n)
261 {
262         return (n != 0 && ((n & (n - 1)) == 0));
263 }
264 
265 size_t hex_width(u64 v);
266 int hex2u64(const char *ptr, u64 *val);
267 
268 char *ltrim(char *s);
269 char *rtrim(char *s);
270 
271 void dump_stack(void);
272 
273 extern unsigned int page_size;
274 
275 struct winsize;
276 void get_term_dimensions(struct winsize *ws);
277 
278 #endif
279 

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