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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 <fcntl.h>
10#include <stdbool.h>
11#include <stddef.h>
12#include <linux/compiler.h>
13#include <sys/types.h>
14#ifndef __cplusplus
15#include <internal/cpumap.h>
16#endif
17
18extern const char perf_usage_string[];
19extern const char perf_more_info_string[];
20
21extern const char *input_name;
22
23extern bool perf_host;
24extern bool perf_guest;
25
26/* General helper functions */
27void usage(const char *err) __noreturn;
28void die(const char *err, ...) __noreturn __printf(1, 2);
29
30struct dirent;
31struct strlist;
32
33int mkdir_p(char *path, mode_t mode);
34int rm_rf(const char *path);
35int rm_rf_perf_data(const char *path);
36struct strlist *lsdir(const char *name, bool (*filter)(const char *, struct dirent *));
37bool lsdir_no_dot_filter(const char *name, struct dirent *d);
38
39size_t hex_width(u64 v);
40
41int sysctl__max_stack(void);
42
43bool sysctl__nmi_watchdog_enabled(void);
44
45int fetch_kernel_version(unsigned int *puint,
46 char *str, size_t str_sz);
47#define KVER_VERSION(x) (((x) >> 16) & 0xff)
48#define KVER_PATCHLEVEL(x) (((x) >> 8) & 0xff)
49#define KVER_SUBLEVEL(x) ((x) & 0xff)
50#define KVER_FMT "%d.%d.%d"
51#define KVER_PARAM(x) KVER_VERSION(x), KVER_PATCHLEVEL(x), KVER_SUBLEVEL(x)
52
53int perf_tip(char **strp, const char *dirpath);
54
55#ifndef HAVE_SCHED_GETCPU_SUPPORT
56int sched_getcpu(void);
57#endif
58
59extern bool perf_singlethreaded;
60
61void perf_set_singlethreaded(void);
62void perf_set_multithreaded(void);
63
64char *perf_exe(char *buf, int len);
65
66#ifndef O_CLOEXEC
67#ifdef __sparc__
68#define O_CLOEXEC 0x400000
69#elif defined(__alpha__) || defined(__hppa__)
70#define O_CLOEXEC 010000000
71#else
72#define O_CLOEXEC 02000000
73#endif
74#endif
75
76extern bool test_attr__enabled;
77void test_attr__ready(void);
78void test_attr__init(void);
79struct perf_event_attr;
80void test_attr__open(struct perf_event_attr *attr, pid_t pid, struct perf_cpu cpu,
81 int fd, int group_fd, unsigned long flags);
82
83struct perf_debuginfod {
84 const char *urls;
85 bool set;
86};
87void perf_debuginfod_setup(struct perf_debuginfod *di);
88
89char *filename_with_chroot(int pid, const char *filename);
90
91int do_realloc_array_as_needed(void **arr, size_t *arr_sz, size_t x,
92 size_t msz, const void *init_val);
93
94#define realloc_array_as_needed(a, n, x, v) ({ \
95 typeof(x) __x = (x); \
96 __x >= (n) ? \
97 do_realloc_array_as_needed((void **)&(a), \
98 &(n), \
99 __x, \
100 sizeof(*(a)), \
101 (const void *)(v)) : \
102 0; \
103 })
104
105static inline bool host_is_bigendian(void)
106{
107#ifdef __BYTE_ORDER__
108#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
109 return false;
110#elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
111 return true;
112#else
113#error "Unrecognized __BYTE_ORDER__"
114#endif
115#else /* !__BYTE_ORDER__ */
116 unsigned char str[] = { 0x1, 0x2, 0x3, 0x4, 0x0, 0x0, 0x0, 0x0};
117 unsigned int *ptr;
118
119 ptr = (unsigned int *)(void *)str;
120 return *ptr == 0x01020304;
121#endif
122}
123
124#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 _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 <sys/select.h>
73#include <netinet/in.h>
74#include <netinet/tcp.h>
75#include <arpa/inet.h>
76#include <netdb.h>
77#include <inttypes.h>
78#include "../../../include/linux/magic.h"
79#include "types.h"
80#include <sys/ttydefaults.h>
81
82extern const char *graph_line;
83extern const char *graph_dotted_line;
84extern char buildid_dir[];
85
86/* On most systems <limits.h> would have given us this, but
87 * not on some systems (e.g. GNU/Hurd).
88 */
89#ifndef PATH_MAX
90#define PATH_MAX 4096
91#endif
92
93#ifndef PRIuMAX
94#define PRIuMAX "llu"
95#endif
96
97#ifndef PRIu32
98#define PRIu32 "u"
99#endif
100
101#ifndef PRIx32
102#define PRIx32 "x"
103#endif
104
105#ifndef PATH_SEP
106#define PATH_SEP ':'
107#endif
108
109#ifndef STRIP_EXTENSION
110#define STRIP_EXTENSION ""
111#endif
112
113#ifndef has_dos_drive_prefix
114#define has_dos_drive_prefix(path) 0
115#endif
116
117#ifndef is_dir_sep
118#define is_dir_sep(c) ((c) == '/')
119#endif
120
121#ifdef __GNUC__
122#define NORETURN __attribute__((__noreturn__))
123#else
124#define NORETURN
125#ifndef __attribute__
126#define __attribute__(x)
127#endif
128#endif
129
130/* General helper functions */
131extern void usage(const char *err) NORETURN;
132extern void die(const char *err, ...) NORETURN __attribute__((format (printf, 1, 2)));
133extern int error(const char *err, ...) __attribute__((format (printf, 1, 2)));
134extern void warning(const char *err, ...) __attribute__((format (printf, 1, 2)));
135
136#include "../../../include/linux/stringify.h"
137
138#define DIE_IF(cnd) \
139 do { if (cnd) \
140 die(" at (" __FILE__ ":" __stringify(__LINE__) "): " \
141 __stringify(cnd) "\n"); \
142 } while (0)
143
144
145extern void set_die_routine(void (*routine)(const char *err, va_list params) NORETURN);
146
147extern int prefixcmp(const char *str, const char *prefix);
148extern void set_buildid_dir(void);
149extern void disable_buildid_cache(void);
150
151static inline const char *skip_prefix(const char *str, const char *prefix)
152{
153 size_t len = strlen(prefix);
154 return strncmp(str, prefix, len) ? NULL : str + len;
155}
156
157#ifdef __GLIBC_PREREQ
158#if __GLIBC_PREREQ(2, 1)
159#define HAVE_STRCHRNUL
160#endif
161#endif
162
163#ifndef HAVE_STRCHRNUL
164#define strchrnul gitstrchrnul
165static inline char *gitstrchrnul(const char *s, int c)
166{
167 while (*s && *s != c)
168 s++;
169 return (char *)s;
170}
171#endif
172
173/*
174 * Wrappers:
175 */
176extern char *xstrdup(const char *str);
177extern void *xrealloc(void *ptr, size_t size) __attribute__((weak));
178
179
180static inline void *zalloc(size_t size)
181{
182 return calloc(1, size);
183}
184
185static inline int has_extension(const char *filename, const char *ext)
186{
187 size_t len = strlen(filename);
188 size_t extlen = strlen(ext);
189
190 return len > extlen && !memcmp(filename + len - extlen, ext, extlen);
191}
192
193/* Sane ctype - no locale, and works with signed chars */
194#undef isascii
195#undef isspace
196#undef isdigit
197#undef isxdigit
198#undef isalpha
199#undef isprint
200#undef isalnum
201#undef islower
202#undef isupper
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 islower(x) (sane_istest(x,GIT_ALPHA) && sane_istest(x,0x20))
224#define isupper(x) (sane_istest(x,GIT_ALPHA) && !sane_istest(x,0x20))
225#define tolower(x) sane_case((unsigned char)(x), 0x20)
226#define toupper(x) sane_case((unsigned char)(x), 0)
227
228static inline int sane_case(int x, int high)
229{
230 if (sane_istest(x, GIT_ALPHA))
231 x = (x & ~0x20) | high;
232 return x;
233}
234
235int mkdir_p(char *path, mode_t mode);
236int copyfile(const char *from, const char *to);
237
238s64 perf_atoll(const char *str);
239char **argv_split(const char *str, int *argcp);
240void argv_free(char **argv);
241bool strglobmatch(const char *str, const char *pat);
242bool strlazymatch(const char *str, const char *pat);
243int strtailcmp(const char *s1, const char *s2);
244unsigned long convert_unit(unsigned long value, char *unit);
245int readn(int fd, void *buf, size_t size);
246
247struct perf_event_attr;
248
249void 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
259static inline __attribute__((const))
260bool is_power_of_2(unsigned long n)
261{
262 return (n != 0 && ((n & (n - 1)) == 0));
263}
264
265size_t hex_width(u64 v);
266
267#endif