tools/perf/util/util.h

   1 #ifndef GIT_COMPAT_UTIL_H
   2 #define GIT_COMPAT_UTIL_H
   3
   4 #define _ALL_SOURCE 1
   5 #define _BSD_SOURCE 1
   6 /* glibc 2.20 deprecates _BSD_SOURCE in favour of _DEFAULT_SOURCE */
   7 #define _DEFAULT_SOURCE 1
   8 #define HAS_BOOL
   9
  10 #include <unistd.h>
  11 #include <stdio.h>
  12 #include <sys/stat.h>
  13 #include <sys/statfs.h>
  14 #include <fcntl.h>
  15 #include <stdbool.h>
  16 #include <stddef.h>
  17 #include <stdlib.h>
  18 #include <stdarg.h>
  19 #include <string.h>
  20 #include <limits.h>
  21 #include <sys/param.h>
  22 #include <sys/types.h>
  23 #include <dirent.h>
  24 #include <sys/time.h>
  25 #include <time.h>
  26 #include <signal.h>
  27 #include <fnmatch.h>
  28 #include <assert.h>
  29 #include <regex.h>
  30 #include <utime.h>
  31 #include <sys/wait.h>
  32 #include <poll.h>
  33 #include <sys/socket.h>
  34 #include <sys/ioctl.h>
  35 #include <linux/kernel.h>
  36 #include <linux/types.h>
  37 #include <api/fs/tracing_path.h>
  38
  39 extern char buildid_dir[];
  40
  41 #ifdef __GNUC__
  42 #define NORETURN __attribute__((__noreturn__))
  43 #else
  44 #define NORETURN
  45 #ifndef __attribute__
  46 #define __attribute__(x)
  47 #endif
  48 #endif
  49
  50 #define PERF_GTK_DSO  "libperf-gtk.so"
  51
  52 /* General helper functions */
  53 void usage(const char *err) NORETURN;
  54 void die(const char *err, ...) NORETURN __attribute__((format (printf, 1, 2)));
  55 int error(const char *err, ...) __attribute__((format (printf, 1, 2)));
  56 void warning(const char *err, ...) __attribute__((format (printf, 1, 2)));
  57
  58 void set_warning_routine(void (*routine)(const char *err, va_list params));
  59
  60 int prefixcmp(const char *str, const char *prefix);
  61 void set_buildid_dir(const char *dir);
  62
  63 #ifdef __GLIBC_PREREQ
  64 #if __GLIBC_PREREQ(2, 1)
  65 #define HAVE_STRCHRNUL
  66 #endif
  67 #endif
  68
  69 #ifndef HAVE_STRCHRNUL
  70 #define strchrnul gitstrchrnul
  71 static inline char *gitstrchrnul(const char *s, int c)
  72 {
  73         while (*s && *s != c)
  74                 s++;
  75         return (char *)s;
  76 }
  77 #endif
  78
  79 static inline void *zalloc(size_t size)
  80 {
  81         return calloc(1, size);
  82 }
  83
  84 #define zfree(ptr) ({ free(*ptr); *ptr = NULL; })
  85
  86 struct strlist;
  87
  88 int mkdir_p(char *path, mode_t mode);
  89 int rm_rf(const char *path);
  90 struct strlist *lsdir(const char *name, bool (*filter)(const char *, struct dirent *));
  91 bool lsdir_no_dot_filter(const char *name, struct dirent *d);
  92 int copyfile(const char *from, const char *to);
  93 int copyfile_mode(const char *from, const char *to, mode_t mode);
  94 int copyfile_offset(int fromfd, loff_t from_ofs, int tofd, loff_t to_ofs, u64 size);
  95
  96 unsigned long convert_unit(unsigned long value, char *unit);
  97 ssize_t readn(int fd, void *buf, size_t n);
  98 ssize_t writen(int fd, void *buf, size_t n);
  99
 100 struct perf_event_attr;
 101
 102 void event_attr_init(struct perf_event_attr *attr);
 103
 104 size_t hex_width(u64 v);
 105 int hex2u64(const char *ptr, u64 *val);
 106
 107 void dump_stack(void);
 108 void sighandler_dump_stack(int sig);
 109
 110 extern unsigned int page_size;
 111 extern int cacheline_size;
 112 extern int sysctl_perf_event_max_stack;
 113 extern int sysctl_perf_event_max_contexts_per_stack;
 114
 115 struct parse_tag {
 116         char tag;
 117         int mult;
 118 };
 119
 120 unsigned long parse_tag_value(const char *str, struct parse_tag *tags);
 121
 122 int perf_event_paranoid(void);
 123
 124 void mem_bswap_64(void *src, int byte_size);
 125 void mem_bswap_32(void *src, int byte_size);
 126
 127 const char *get_filename_for_perf_kvm(void);
 128 bool find_process(const char *name);
 129
 130 #ifdef HAVE_ZLIB_SUPPORT
 131 int gzip_decompress_to_file(const char *input, int output_fd);
 132 #endif
 133
 134 #ifdef HAVE_LZMA_SUPPORT
 135 int lzma_decompress_to_file(const char *input, int output_fd);
 136 #endif
 137
 138 int get_stack_size(const char *str, unsigned long *_size);
 139
 140 int fetch_kernel_version(unsigned int *puint,
 141                          char *str, size_t str_sz);
 142 #define KVER_VERSION(x)         (((x) >> 16) & 0xff)
 143 #define KVER_PATCHLEVEL(x)      (((x) >> 8) & 0xff)
 144 #define KVER_SUBLEVEL(x)        ((x) & 0xff)
 145 #define KVER_FMT        "%d.%d.%d"
 146 #define KVER_PARAM(x)   KVER_VERSION(x), KVER_PATCHLEVEL(x), KVER_SUBLEVEL(x)
 147
 148 const char *perf_tip(const char *dirpath);
 149 int fetch_current_timestamp(char *buf, size_t sz);
 150
 151 #ifndef HAVE_SCHED_GETCPU_SUPPORT
 152 int sched_getcpu(void);
 153 #endif
 154
 155 int timestamp__scnprintf_usec(u64 timestamp, char *buf, size_t sz);
 156
 157 int unit_number__scnprintf(char *buf, size_t size, u64 n);
 158
 159 #endif /* GIT_COMPAT_UTIL_H */