LXR linux/tools/perf/util/util.h

   1/* SPDX-License-Identifier: GPL-2.0 */
   2#ifndef GIT_COMPAT_UTIL_H
   3#define GIT_COMPAT_UTIL_H
   4
   5#define _BSD_SOURCE 1
   6/* glibc 2.20 deprecates _BSD_SOURCE in favour of _DEFAULT_SOURCE */
   7#define _DEFAULT_SOURCE 1
   8
   9#include <fcntl.h>
  10#include <stdbool.h>
  11#include <stddef.h>
  12#include <stdlib.h>
  13#include <stdarg.h>
  14#include <linux/compiler.h>
  15#include <sys/types.h>
  16
  17/* General helper functions */
  18void usage(const char *err) __noreturn;
  19void die(const char *err, ...) __noreturn __printf(1, 2);
  20
  21static inline void *zalloc(size_t size)
  22{
  23        return calloc(1, size);
  24}
  25
  26#define zfree(ptr) ({ free(*ptr); *ptr = NULL; })
  27
  28struct dirent;
  29struct nsinfo;
  30struct strlist;
  31
  32int mkdir_p(char *path, mode_t mode);
  33int rm_rf(const char *path);
  34int rm_rf_perf_data(const char *path);
  35struct strlist *lsdir(const char *name, bool (*filter)(const char *, struct dirent *));
  36bool lsdir_no_dot_filter(const char *name, struct dirent *d);
  37int copyfile(const char *from, const char *to);
  38int copyfile_mode(const char *from, const char *to, mode_t mode);
  39int copyfile_ns(const char *from, const char *to, struct nsinfo *nsi);
  40int copyfile_offset(int ifd, loff_t off_in, int ofd, loff_t off_out, u64 size);
  41
  42ssize_t readn(int fd, void *buf, size_t n);
  43ssize_t writen(int fd, const void *buf, size_t n);
  44
  45size_t hex_width(u64 v);
  46int hex2u64(const char *ptr, u64 *val);
  47
  48extern unsigned int page_size;
  49int __pure cacheline_size(void);
  50
  51int sysctl__max_stack(void);
  52
  53int fetch_kernel_version(unsigned int *puint,
  54                         char *str, size_t str_sz);
  55#define KVER_VERSION(x)         (((x) >> 16) & 0xff)
  56#define KVER_PATCHLEVEL(x)      (((x) >> 8) & 0xff)
  57#define KVER_SUBLEVEL(x)        ((x) & 0xff)
  58#define KVER_FMT        "%d.%d.%d"
  59#define KVER_PARAM(x)   KVER_VERSION(x), KVER_PATCHLEVEL(x), KVER_SUBLEVEL(x)
  60
  61const char *perf_tip(const char *dirpath);
  62
  63#ifndef HAVE_GET_CURRENT_DIR_NAME
  64char *get_current_dir_name(void);
  65#endif
  66
  67#ifndef HAVE_SCHED_GETCPU_SUPPORT
  68int sched_getcpu(void);
  69#endif
  70
  71#ifndef HAVE_SETNS_SUPPORT
  72int setns(int fd, int nstype);
  73#endif
  74
  75extern bool perf_singlethreaded;
  76
  77void perf_set_singlethreaded(void);
  78void perf_set_multithreaded(void);
  79
  80char *perf_exe(char *buf, int len);
  81
  82#ifndef O_CLOEXEC
  83#ifdef __sparc__
  84#define O_CLOEXEC      0x400000
  85#elif defined(__alpha__) || defined(__hppa__)
  86#define O_CLOEXEC      010000000
  87#else
  88#define O_CLOEXEC      02000000
  89#endif
  90#endif
  91
  92#endif /* GIT_COMPAT_UTIL_H */
  93