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1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef __PERF_UTIL_H
3#define __PERF_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 <dirent.h>
10#include <fcntl.h>
11#include <stdbool.h>
12#include <stddef.h>
13#include <linux/compiler.h>
14#include <sys/types.h>
15#ifndef __cplusplus
16#include <internal/cpumap.h>
17#endif
18
19extern const char perf_usage_string[];
20extern const char perf_more_info_string[];
21
22extern const char *input_name;
23
24extern bool perf_host;
25extern bool perf_guest;
26
27/* General helper functions */
28void usage(const char *err) __noreturn;
29void die(const char *err, ...) __noreturn __printf(1, 2);
30
31struct dirent;
32struct strlist;
33
34int mkdir_p(char *path, mode_t mode);
35int rm_rf(const char *path);
36int rm_rf_perf_data(const char *path);
37struct strlist *lsdir(const char *name, bool (*filter)(const char *, struct dirent *));
38bool lsdir_no_dot_filter(const char *name, struct dirent *d);
39
40size_t hex_width(u64 v);
41
42int sysctl__max_stack(void);
43
44bool sysctl__nmi_watchdog_enabled(void);
45
46int fetch_kernel_version(unsigned int *puint,
47 char *str, size_t str_sz);
48#define KVER_VERSION(x) (((x) >> 16) & 0xff)
49#define KVER_PATCHLEVEL(x) (((x) >> 8) & 0xff)
50#define KVER_SUBLEVEL(x) ((x) & 0xff)
51#define KVER_FMT "%d.%d.%d"
52#define KVER_PARAM(x) KVER_VERSION(x), KVER_PATCHLEVEL(x), KVER_SUBLEVEL(x)
53
54int perf_tip(char **strp, const char *dirpath);
55
56#ifndef HAVE_SCHED_GETCPU_SUPPORT
57int sched_getcpu(void);
58#endif
59
60#ifndef HAVE_SCANDIRAT_SUPPORT
61int scandirat(int dirfd, const char *dirp,
62 struct dirent ***namelist,
63 int (*filter)(const struct dirent *),
64 int (*compar)(const struct dirent **, const struct dirent **));
65#endif
66
67extern bool perf_singlethreaded;
68
69void perf_set_singlethreaded(void);
70void perf_set_multithreaded(void);
71
72char *perf_exe(char *buf, int len);
73
74#ifndef O_CLOEXEC
75#ifdef __sparc__
76#define O_CLOEXEC 0x400000
77#elif defined(__alpha__) || defined(__hppa__)
78#define O_CLOEXEC 010000000
79#else
80#define O_CLOEXEC 02000000
81#endif
82#endif
83
84extern bool test_attr__enabled;
85void test_attr__ready(void);
86void test_attr__init(void);
87struct perf_event_attr;
88void test_attr__open(struct perf_event_attr *attr, pid_t pid, struct perf_cpu cpu,
89 int fd, int group_fd, unsigned long flags);
90
91struct perf_debuginfod {
92 const char *urls;
93 bool set;
94};
95void perf_debuginfod_setup(struct perf_debuginfod *di);
96
97char *filename_with_chroot(int pid, const char *filename);
98
99int do_realloc_array_as_needed(void **arr, size_t *arr_sz, size_t x,
100 size_t msz, const void *init_val);
101
102#define realloc_array_as_needed(a, n, x, v) ({ \
103 typeof(x) __x = (x); \
104 __x >= (n) ? \
105 do_realloc_array_as_needed((void **)&(a), \
106 &(n), \
107 __x, \
108 sizeof(*(a)), \
109 (const void *)(v)) : \
110 0; \
111 })
112
113static inline bool host_is_bigendian(void)
114{
115#ifdef __BYTE_ORDER__
116#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
117 return false;
118#elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
119 return true;
120#else
121#error "Unrecognized __BYTE_ORDER__"
122#endif
123#else /* !__BYTE_ORDER__ */
124 unsigned char str[] = { 0x1, 0x2, 0x3, 0x4, 0x0, 0x0, 0x0, 0x0};
125 unsigned int *ptr;
126
127 ptr = (unsigned int *)(void *)str;
128 return *ptr == 0x01020304;
129#endif
130}
131
132#endif /* __PERF_UTIL_H */
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 _GNU_SOURCE 1
44#define _BSD_SOURCE 1
45#define HAS_BOOL
46
47#include <unistd.h>
48#include <stdio.h>
49#include <sys/stat.h>
50#include <sys/statfs.h>
51#include <fcntl.h>
52#include <stdbool.h>
53#include <stddef.h>
54#include <stdlib.h>
55#include <stdarg.h>
56#include <string.h>
57#include <errno.h>
58#include <limits.h>
59#include <sys/param.h>
60#include <sys/types.h>
61#include <dirent.h>
62#include <sys/time.h>
63#include <time.h>
64#include <signal.h>
65#include <fnmatch.h>
66#include <assert.h>
67#include <regex.h>
68#include <utime.h>
69#include <sys/wait.h>
70#include <sys/poll.h>
71#include <sys/socket.h>
72#include <sys/ioctl.h>
73#include <sys/select.h>
74#include <netinet/in.h>
75#include <netinet/tcp.h>
76#include <arpa/inet.h>
77#include <netdb.h>
78#include <pwd.h>
79#include <inttypes.h>
80#include "../../../include/linux/magic.h"
81#include "types.h"
82#include <sys/ttydefaults.h>
83
84extern const char *graph_line;
85extern const char *graph_dotted_line;
86extern char buildid_dir[];
87
88/* On most systems <limits.h> would have given us this, but
89 * not on some systems (e.g. GNU/Hurd).
90 */
91#ifndef PATH_MAX
92#define PATH_MAX 4096
93#endif
94
95#ifndef PRIuMAX
96#define PRIuMAX "llu"
97#endif
98
99#ifndef PRIu32
100#define PRIu32 "u"
101#endif
102
103#ifndef PRIx32
104#define PRIx32 "x"
105#endif
106
107#ifndef PATH_SEP
108#define PATH_SEP ':'
109#endif
110
111#ifndef STRIP_EXTENSION
112#define STRIP_EXTENSION ""
113#endif
114
115#ifndef has_dos_drive_prefix
116#define has_dos_drive_prefix(path) 0
117#endif
118
119#ifndef is_dir_sep
120#define is_dir_sep(c) ((c) == '/')
121#endif
122
123#ifdef __GNUC__
124#define NORETURN __attribute__((__noreturn__))
125#else
126#define NORETURN
127#ifndef __attribute__
128#define __attribute__(x)
129#endif
130#endif
131
132/* General helper functions */
133extern void usage(const char *err) NORETURN;
134extern void die(const char *err, ...) NORETURN __attribute__((format (printf, 1, 2)));
135extern int error(const char *err, ...) __attribute__((format (printf, 1, 2)));
136extern void warning(const char *err, ...) __attribute__((format (printf, 1, 2)));
137
138#include "../../../include/linux/stringify.h"
139
140#define DIE_IF(cnd) \
141 do { if (cnd) \
142 die(" at (" __FILE__ ":" __stringify(__LINE__) "): " \
143 __stringify(cnd) "\n"); \
144 } while (0)
145
146
147extern void set_die_routine(void (*routine)(const char *err, va_list params) NORETURN);
148
149extern int prefixcmp(const char *str, const char *prefix);
150extern void set_buildid_dir(void);
151extern void disable_buildid_cache(void);
152
153static inline const char *skip_prefix(const char *str, const char *prefix)
154{
155 size_t len = strlen(prefix);
156 return strncmp(str, prefix, len) ? NULL : str + len;
157}
158
159#ifdef __GLIBC_PREREQ
160#if __GLIBC_PREREQ(2, 1)
161#define HAVE_STRCHRNUL
162#endif
163#endif
164
165#ifndef HAVE_STRCHRNUL
166#define strchrnul gitstrchrnul
167static inline char *gitstrchrnul(const char *s, int c)
168{
169 while (*s && *s != c)
170 s++;
171 return (char *)s;
172}
173#endif
174
175/*
176 * Wrappers:
177 */
178extern char *xstrdup(const char *str);
179extern void *xrealloc(void *ptr, size_t size) __attribute__((weak));
180
181
182static inline void *zalloc(size_t size)
183{
184 return calloc(1, size);
185}
186
187static inline int has_extension(const char *filename, const char *ext)
188{
189 size_t len = strlen(filename);
190 size_t extlen = strlen(ext);
191
192 return len > extlen && !memcmp(filename + len - extlen, ext, extlen);
193}
194
195/* Sane ctype - no locale, and works with signed chars */
196#undef isascii
197#undef isspace
198#undef isdigit
199#undef isxdigit
200#undef isalpha
201#undef isprint
202#undef isalnum
203#undef tolower
204#undef toupper
205
206extern unsigned char sane_ctype[256];
207#define GIT_SPACE 0x01
208#define GIT_DIGIT 0x02
209#define GIT_ALPHA 0x04
210#define GIT_GLOB_SPECIAL 0x08
211#define GIT_REGEX_SPECIAL 0x10
212#define GIT_PRINT_EXTRA 0x20
213#define GIT_PRINT 0x3E
214#define sane_istest(x,mask) ((sane_ctype[(unsigned char)(x)] & (mask)) != 0)
215#define isascii(x) (((x) & ~0x7f) == 0)
216#define isspace(x) sane_istest(x,GIT_SPACE)
217#define isdigit(x) sane_istest(x,GIT_DIGIT)
218#define isxdigit(x) \
219 (sane_istest(toupper(x), GIT_ALPHA | GIT_DIGIT) && toupper(x) < 'G')
220#define isalpha(x) sane_istest(x,GIT_ALPHA)
221#define isalnum(x) sane_istest(x,GIT_ALPHA | GIT_DIGIT)
222#define isprint(x) sane_istest(x,GIT_PRINT)
223#define tolower(x) sane_case((unsigned char)(x), 0x20)
224#define toupper(x) sane_case((unsigned char)(x), 0)
225
226static inline int sane_case(int x, int high)
227{
228 if (sane_istest(x, GIT_ALPHA))
229 x = (x & ~0x20) | high;
230 return x;
231}
232
233int mkdir_p(char *path, mode_t mode);
234int copyfile(const char *from, const char *to);
235
236s64 perf_atoll(const char *str);
237char **argv_split(const char *str, int *argcp);
238void argv_free(char **argv);
239bool strglobmatch(const char *str, const char *pat);
240bool strlazymatch(const char *str, const char *pat);
241int strtailcmp(const char *s1, const char *s2);
242unsigned long convert_unit(unsigned long value, char *unit);
243int readn(int fd, void *buf, size_t size);
244
245#define _STR(x) #x
246#define STR(x) _STR(x)
247
248#endif