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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#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#define HAS_BOOL
43
44#include <unistd.h>
45#include <stdio.h>
46#include <sys/stat.h>
47#include <sys/statfs.h>
48#include <fcntl.h>
49#include <stdbool.h>
50#include <stddef.h>
51#include <stdlib.h>
52#include <stdarg.h>
53#include <string.h>
54#include <errno.h>
55#include <limits.h>
56#include <sys/param.h>
57#include <sys/types.h>
58#include <dirent.h>
59#include <sys/time.h>
60#include <time.h>
61#include <signal.h>
62#include <fnmatch.h>
63#include <assert.h>
64#include <regex.h>
65#include <utime.h>
66#include <sys/wait.h>
67#include <sys/poll.h>
68#include <sys/socket.h>
69#include <sys/ioctl.h>
70#include <inttypes.h>
71#include <linux/magic.h>
72#include "types.h"
73#include <sys/ttydefaults.h>
74#include <api/fs/debugfs.h>
75#include <termios.h>
76#include <linux/bitops.h>
77
78extern const char *graph_line;
79extern const char *graph_dotted_line;
80extern char buildid_dir[];
81extern char tracing_events_path[];
82extern void perf_debugfs_set_path(const char *mountpoint);
83const char *perf_debugfs_mount(const char *mountpoint);
84const char *find_tracing_dir(void);
85char *get_tracing_file(const char *name);
86void put_tracing_file(char *file);
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#define PERF_GTK_DSO "libperf-gtk.so"
133
134/* General helper functions */
135extern void usage(const char *err) NORETURN;
136extern void die(const char *err, ...) NORETURN __attribute__((format (printf, 1, 2)));
137extern int error(const char *err, ...) __attribute__((format (printf, 1, 2)));
138extern void warning(const char *err, ...) __attribute__((format (printf, 1, 2)));
139
140#include "../../../include/linux/stringify.h"
141
142#define DIE_IF(cnd) \
143 do { if (cnd) \
144 die(" at (" __FILE__ ":" __stringify(__LINE__) "): " \
145 __stringify(cnd) "\n"); \
146 } while (0)
147
148
149extern void set_die_routine(void (*routine)(const char *err, va_list params) NORETURN);
150
151extern int prefixcmp(const char *str, const char *prefix);
152extern void set_buildid_dir(void);
153extern void disable_buildid_cache(void);
154
155static inline const char *skip_prefix(const char *str, const char *prefix)
156{
157 size_t len = strlen(prefix);
158 return strncmp(str, prefix, len) ? NULL : str + len;
159}
160
161#ifdef __GLIBC_PREREQ
162#if __GLIBC_PREREQ(2, 1)
163#define HAVE_STRCHRNUL
164#endif
165#endif
166
167#ifndef HAVE_STRCHRNUL
168#define strchrnul gitstrchrnul
169static inline char *gitstrchrnul(const char *s, int c)
170{
171 while (*s && *s != c)
172 s++;
173 return (char *)s;
174}
175#endif
176
177/*
178 * Wrappers:
179 */
180extern char *xstrdup(const char *str);
181extern void *xrealloc(void *ptr, size_t size) __attribute__((weak));
182
183
184static inline void *zalloc(size_t size)
185{
186 return calloc(1, size);
187}
188
189#define zfree(ptr) ({ free(*ptr); *ptr = NULL; })
190
191static inline int has_extension(const char *filename, const char *ext)
192{
193 size_t len = strlen(filename);
194 size_t extlen = strlen(ext);
195
196 return len > extlen && !memcmp(filename + len - extlen, ext, extlen);
197}
198
199/* Sane ctype - no locale, and works with signed chars */
200#undef isascii
201#undef isspace
202#undef isdigit
203#undef isxdigit
204#undef isalpha
205#undef isprint
206#undef isalnum
207#undef islower
208#undef isupper
209#undef tolower
210#undef toupper
211
212#ifndef NSEC_PER_MSEC
213#define NSEC_PER_MSEC 1000000L
214#endif
215
216int parse_nsec_time(const char *str, u64 *ptime);
217
218extern unsigned char sane_ctype[256];
219#define GIT_SPACE 0x01
220#define GIT_DIGIT 0x02
221#define GIT_ALPHA 0x04
222#define GIT_GLOB_SPECIAL 0x08
223#define GIT_REGEX_SPECIAL 0x10
224#define GIT_PRINT_EXTRA 0x20
225#define GIT_PRINT 0x3E
226#define sane_istest(x,mask) ((sane_ctype[(unsigned char)(x)] & (mask)) != 0)
227#define isascii(x) (((x) & ~0x7f) == 0)
228#define isspace(x) sane_istest(x,GIT_SPACE)
229#define isdigit(x) sane_istest(x,GIT_DIGIT)
230#define isxdigit(x) \
231 (sane_istest(toupper(x), GIT_ALPHA | GIT_DIGIT) && toupper(x) < 'G')
232#define isalpha(x) sane_istest(x,GIT_ALPHA)
233#define isalnum(x) sane_istest(x,GIT_ALPHA | GIT_DIGIT)
234#define isprint(x) sane_istest(x,GIT_PRINT)
235#define islower(x) (sane_istest(x,GIT_ALPHA) && (x & 0x20))
236#define isupper(x) (sane_istest(x,GIT_ALPHA) && !(x & 0x20))
237#define tolower(x) sane_case((unsigned char)(x), 0x20)
238#define toupper(x) sane_case((unsigned char)(x), 0)
239
240static inline int sane_case(int x, int high)
241{
242 if (sane_istest(x, GIT_ALPHA))
243 x = (x & ~0x20) | high;
244 return x;
245}
246
247int mkdir_p(char *path, mode_t mode);
248int copyfile(const char *from, const char *to);
249int copyfile_mode(const char *from, const char *to, mode_t mode);
250
251s64 perf_atoll(const char *str);
252char **argv_split(const char *str, int *argcp);
253void argv_free(char **argv);
254bool strglobmatch(const char *str, const char *pat);
255bool strlazymatch(const char *str, const char *pat);
256int strtailcmp(const char *s1, const char *s2);
257char *strxfrchar(char *s, char from, char to);
258unsigned long convert_unit(unsigned long value, char *unit);
259ssize_t readn(int fd, void *buf, size_t n);
260ssize_t writen(int fd, void *buf, size_t n);
261
262struct perf_event_attr;
263
264void event_attr_init(struct perf_event_attr *attr);
265
266#define _STR(x) #x
267#define STR(x) _STR(x)
268
269/*
270 * Determine whether some value is a power of two, where zero is
271 * *not* considered a power of two.
272 */
273
274static inline __attribute__((const))
275bool is_power_of_2(unsigned long n)
276{
277 return (n != 0 && ((n & (n - 1)) == 0));
278}
279
280static inline unsigned next_pow2(unsigned x)
281{
282 if (!x)
283 return 1;
284 return 1ULL << (32 - __builtin_clz(x - 1));
285}
286
287static inline unsigned long next_pow2_l(unsigned long x)
288{
289#if BITS_PER_LONG == 64
290 if (x <= (1UL << 31))
291 return next_pow2(x);
292 return (unsigned long)next_pow2(x >> 32) << 32;
293#else
294 return next_pow2(x);
295#endif
296}
297
298size_t hex_width(u64 v);
299int hex2u64(const char *ptr, u64 *val);
300
301char *ltrim(char *s);
302char *rtrim(char *s);
303
304void dump_stack(void);
305
306extern unsigned int page_size;
307
308void get_term_dimensions(struct winsize *ws);
309
310struct parse_tag {
311 char tag;
312 int mult;
313};
314
315unsigned long parse_tag_value(const char *str, struct parse_tag *tags);
316
317#define SRCLINE_UNKNOWN ((char *) "??:0")
318
319struct dso;
320
321char *get_srcline(struct dso *dso, unsigned long addr);
322void free_srcline(char *srcline);
323
324int filename__read_int(const char *filename, int *value);
325int filename__read_str(const char *filename, char **buf, size_t *sizep);
326int perf_event_paranoid(void);
327
328void mem_bswap_64(void *src, int byte_size);
329void mem_bswap_32(void *src, int byte_size);
330
331const char *get_filename_for_perf_kvm(void);
332#endif /* GIT_COMPAT_UTIL_H */