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/* glibc 2.20 deprecates _BSD_SOURCE in favour of _DEFAULT_SOURCE */ 43#define _DEFAULT_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 <poll.h> 70#include <sys/socket.h> 71#include <sys/ioctl.h> 72#include <inttypes.h> 73#include <linux/kernel.h> 74#include <linux/magic.h> 75#include <linux/types.h> 76#include <sys/ttydefaults.h> 77#include <api/fs/debugfs.h> 78#include <api/fs/tracefs.h> 79#include <termios.h> 80#include <linux/bitops.h> 81#include <termios.h> 82 83extern const char *graph_line; 84extern const char *graph_dotted_line; 85extern char buildid_dir[]; 86extern char tracing_events_path[]; 87extern void perf_debugfs_set_path(const char *mountpoint); 88const char *perf_debugfs_mount(const char *mountpoint); 89const char *find_tracing_dir(void); 90char *get_tracing_file(const char *name); 91void put_tracing_file(char *file); 92 93/* On most systems <limits.h> would have given us this, but 94 * not on some systems (e.g. GNU/Hurd). 95 */ 96#ifndef PATH_MAX 97#define PATH_MAX 4096 98#endif 99 100#ifndef PRIuMAX 101#define PRIuMAX "llu" 102#endif 103 104#ifndef PRIu32 105#define PRIu32 "u" 106#endif 107 108#ifndef PRIx32 109#define PRIx32 "x" 110#endif 111 112#ifndef PATH_SEP 113#define PATH_SEP ':' 114#endif 115 116#ifndef STRIP_EXTENSION 117#define STRIP_EXTENSION "" 118#endif 119 120#ifndef has_dos_drive_prefix 121#define has_dos_drive_prefix(path) 0 122#endif 123 124#ifndef is_dir_sep 125#define is_dir_sep(c) ((c) == '/') 126#endif 127 128#ifdef __GNUC__ 129#define NORETURN __attribute__((__noreturn__)) 130#else 131#define NORETURN 132#ifndef __attribute__ 133#define __attribute__(x) 134#endif 135#endif 136 137#define PERF_GTK_DSO "libperf-gtk.so" 138 139/* General helper functions */ 140extern void usage(const char *err) NORETURN; 141extern void die(const char *err, ...) NORETURN __attribute__((format (printf, 1, 2))); 142extern int error(const char *err, ...) __attribute__((format (printf, 1, 2))); 143extern void warning(const char *err, ...) __attribute__((format (printf, 1, 2))); 144 145#include "../../../include/linux/stringify.h" 146 147#define DIE_IF(cnd) \ 148 do { if (cnd) \ 149 die(" at (" __FILE__ ":" __stringify(__LINE__) "): " \ 150 __stringify(cnd) "\n"); \ 151 } while (0) 152 153 154extern void set_die_routine(void (*routine)(const char *err, va_list params) NORETURN); 155 156extern int prefixcmp(const char *str, const char *prefix); 157extern void set_buildid_dir(const char *dir); 158 159static inline const char *skip_prefix(const char *str, const char *prefix) 160{ 161 size_t len = strlen(prefix); 162 return strncmp(str, prefix, len) ? NULL : str + len; 163} 164 165#ifdef __GLIBC_PREREQ 166#if __GLIBC_PREREQ(2, 1) 167#define HAVE_STRCHRNUL 168#endif 169#endif 170 171#ifndef HAVE_STRCHRNUL 172#define strchrnul gitstrchrnul 173static inline char *gitstrchrnul(const char *s, int c) 174{ 175 while (*s && *s != c) 176 s++; 177 return (char *)s; 178} 179#endif 180 181/* 182 * Wrappers: 183 */ 184extern char *xstrdup(const char *str); 185extern void *xrealloc(void *ptr, size_t size) __attribute__((weak)); 186 187 188static inline void *zalloc(size_t size) 189{ 190 return calloc(1, size); 191} 192 193#define zfree(ptr) ({ free(*ptr); *ptr = NULL; }) 194 195static inline int has_extension(const char *filename, const char *ext) 196{ 197 size_t len = strlen(filename); 198 size_t extlen = strlen(ext); 199 200 return len > extlen && !memcmp(filename + len - extlen, ext, extlen); 201} 202 203/* Sane ctype - no locale, and works with signed chars */ 204#undef isascii 205#undef isspace 206#undef isdigit 207#undef isxdigit 208#undef isalpha 209#undef isprint 210#undef isalnum 211#undef islower 212#undef isupper 213#undef tolower 214#undef toupper 215 216#ifndef NSEC_PER_MSEC 217#define NSEC_PER_MSEC 1000000L 218#endif 219 220int parse_nsec_time(const char *str, u64 *ptime); 221 222extern unsigned char sane_ctype[256]; 223#define GIT_SPACE 0x01 224#define GIT_DIGIT 0x02 225#define GIT_ALPHA 0x04 226#define GIT_GLOB_SPECIAL 0x08 227#define GIT_REGEX_SPECIAL 0x10 228#define GIT_PRINT_EXTRA 0x20 229#define GIT_PRINT 0x3E 230#define sane_istest(x,mask) ((sane_ctype[(unsigned char)(x)] & (mask)) != 0) 231#define isascii(x) (((x) & ~0x7f) == 0) 232#define isspace(x) sane_istest(x,GIT_SPACE) 233#define isdigit(x) sane_istest(x,GIT_DIGIT) 234#define isxdigit(x) \ 235 (sane_istest(toupper(x), GIT_ALPHA | GIT_DIGIT) && toupper(x) < 'G') 236#define isalpha(x) sane_istest(x,GIT_ALPHA) 237#define isalnum(x) sane_istest(x,GIT_ALPHA | GIT_DIGIT) 238#define isprint(x) sane_istest(x,GIT_PRINT) 239#define islower(x) (sane_istest(x,GIT_ALPHA) && (x & 0x20)) 240#define isupper(x) (sane_istest(x,GIT_ALPHA) && !(x & 0x20)) 241#define tolower(x) sane_case((unsigned char)(x), 0x20) 242#define toupper(x) sane_case((unsigned char)(x), 0) 243 244static inline int sane_case(int x, int high) 245{ 246 if (sane_istest(x, GIT_ALPHA)) 247 x = (x & ~0x20) | high; 248 return x; 249} 250 251int mkdir_p(char *path, mode_t mode); 252int copyfile(const char *from, const char *to); 253int copyfile_mode(const char *from, const char *to, mode_t mode); 254 255s64 perf_atoll(const char *str); 256char **argv_split(const char *str, int *argcp); 257void argv_free(char **argv); 258bool strglobmatch(const char *str, const char *pat); 259bool strlazymatch(const char *str, const char *pat); 260int strtailcmp(const char *s1, const char *s2); 261char *strxfrchar(char *s, char from, char to); 262unsigned long convert_unit(unsigned long value, char *unit); 263ssize_t readn(int fd, void *buf, size_t n); 264ssize_t writen(int fd, void *buf, size_t n); 265 266struct perf_event_attr; 267 268void event_attr_init(struct perf_event_attr *attr); 269 270#define _STR(x) #x 271#define STR(x) _STR(x) 272 273size_t hex_width(u64 v); 274int hex2u64(const char *ptr, u64 *val); 275 276char *ltrim(char *s); 277char *rtrim(char *s); 278 279void dump_stack(void); 280void sighandler_dump_stack(int sig); 281 282extern unsigned int page_size; 283extern int cacheline_size; 284 285void get_term_dimensions(struct winsize *ws); 286void set_term_quiet_input(struct termios *old); 287 288struct parse_tag { 289 char tag; 290 int mult; 291}; 292 293unsigned long parse_tag_value(const char *str, struct parse_tag *tags); 294 295#define SRCLINE_UNKNOWN ((char *) "??:0") 296 297static inline int path__join(char *bf, size_t size, 298 const char *path1, const char *path2) 299{ 300 return scnprintf(bf, size, "%s%s%s", path1, path1[0] ? "/" : "", path2); 301} 302 303static inline int path__join3(char *bf, size_t size, 304 const char *path1, const char *path2, 305 const char *path3) 306{ 307 return scnprintf(bf, size, "%s%s%s%s%s", 308 path1, path1[0] ? "/" : "", 309 path2, path2[0] ? "/" : "", path3); 310} 311 312struct dso; 313struct symbol; 314 315char *get_srcline(struct dso *dso, u64 addr, struct symbol *sym, 316 bool show_sym); 317void free_srcline(char *srcline); 318 319int filename__read_str(const char *filename, char **buf, size_t *sizep); 320int perf_event_paranoid(void); 321 322void mem_bswap_64(void *src, int byte_size); 323void mem_bswap_32(void *src, int byte_size); 324 325const char *get_filename_for_perf_kvm(void); 326bool find_process(const char *name); 327 328#ifdef HAVE_ZLIB_SUPPORT 329int gzip_decompress_to_file(const char *input, int output_fd); 330#endif 331 332#ifdef HAVE_LZMA_SUPPORT 333int lzma_decompress_to_file(const char *input, int output_fd); 334#endif 335 336#endif /* GIT_COMPAT_UTIL_H */ 337